Microchip Technology Inc

Analog Power Management

The MIC2127A is a constant-frequency, synchronous buck controller featuring a unique adaptive on-time control architecture and HyperLight Load® mode. The MIC2127A operates over an input supply range of 4.5V to 75V. The output voltage is adjustable from 0.6V to 30V with an ensured accuracy of ±1%. The device features programmable switching frequency from 270 kHz to 800 kHz.
What if there was a way to drive a fan so that it could do the same amount of work using a quarter of the power?

Microchip has developed a reference design that demonstrates how you can drive a ceiling fan at 300 RPM and only draw 25W—about the same amount of power that an LED bulb requires. This demo uses a Brushless DC (BLDC) motor and an electronic commutator to enable active devices, such the microcontroller’s power stage, to drive the motor and power management devices to regulate power and connectivity devices.
The CL88020 120VAC office LED Driver Evaluation Board is a complete solution consisting of an LED Driver (ADM00766) and an LED Load Board (ADM00767) powered directly from the 120VAC line and based on Microchip Technology's CL88020 Sequential Linear Driver.
The HV9805 120VAC Off-Line LED Driver Evaluation Board is used to evaluate and demonstrate Microchip Technology Inc.'s HV9805 device in the following topology:
•215-265V output Boost Converter application followed by a LED-side linear current regulator, supplied from the mains 120VAC, to drive a 70-90 LED string.
The HV9805 120VAC Off-Line LED Driver Evaluation Board was developed to help engineers reduce the product design cycle time.
The HV9805 230VAC Off-Line LED Driver Evaluation Board is used to evaluate and demonstrate Microchip Technology Inc.'s HV9805 device in the following topology:
•420-430V output Boost Converter application followed by a LED-side linear current regulator, supplied from the mains 230VAC, to drive a 130-150 LED string.
The HV9805 230VAC Off-Line LED Driver Evaluation Board was developed to help engineers reduce the product design cycle time.
The HV9805 230VAC SEPIC Evaluation Board is used to evaluate and demonstrate Microchip Technology Inc.'s HV9805 device in the following topology:
The HV9805 230VAC SEPIC Evaluation Board is suited for driving a 125V/100 mA LED load from a 230VAC source.
The Single-ended primary-inductor converter (SEPIC) configuration extends the application range of the HV9805 driver Integrated Circuit (IC) to lower LED load voltages than otherwise possible with the boost configuration. Many features of the boost configuration are retained, such as a true direct current drive of the LED load, high input power factor, high efficiency and simple magnetics.
The HV98100 120VAC Off-Line LED Driver Evaluation Board is designed to demonstrate the performance of Microchip Technology Inc's HV98100 LED Driver IC. The evaluation board drives a 120V LED string at 120mA from a 120VAC input voltage with high input Power Factor and low Total Harmonic Distortion.

The HV98101 230VAC Off-Line LED Driver Evaluation Board is designed to demonstrate the performance of Microchip Technology Inc's HV98101 LED Driver IC. The evaluation board drives a 100V LED string at 100mA from a 230VAC input voltage with high input Power Factor and low Total Harmonic Distortion.
The MCP1252 Charge Pump Backlight LED Demo Board demonstrates the use of a Charge Pump device in an LED application. The board also serves as a platform to evaluate the MCP1252 device in general. The MCP1252-ADJ is an excellent choice for biasing the back lighting or driving other LED applications. Light intensity is controlled uniformly through the use of ballast resistors. The peak intensity is set by the feedback to the the MCP1252-ADJ. Dimming is accomplished by pulse-width modulating the shutdown pin of the device.

The board also feature a PIC10F206 microcontroller in a SOT23 package, which is used to provide an enable signal to the MCP1252. The PICmicro also accepts a push-button input that allows the user to adjust the white LEDs to five different light intensities, in addition to placing the system in a standby mode that consumes less than 1 uA of current (typical).

The MCP1256/7/8/9 Charge Pump Evaluation Board is an evaluation and demonstration tool for Microchip Technology’s MCP1256/7/8/9 Regulated 3.3V, Low-Ripple Charge Pumps with Low Operating Current SLEEP Mode or BYPASS Mode. The design provides for dynamic versatility.

The MCP1256/7/8/9 Charge Pump Evaluation Board is setup to evaluate simple, stand-alone, dc-to-dc conversion. Two evaluation circuits are provided, demonstrating the versatility of the MCP1256/7/8/9 device family. One evaluation circuit utilizes the MCP1256, demonstrating the SLEEP mode feature along with a power good indication. The other evaluation circuit utilizes the MCP1259, demonstrating the unique BYPASS mode feature along with a low battery indication.

When connected, the MCP1256/7/8/9 devices can be evaluated in a variety of applications.

The MCP1601 Buck Regulator Evaluation Board demonstrates Microchip's MCP1601 Synchronous Buck Regulator, developed for battery powered applications as well as distributed power applications. The MCP1601 Evaluation Board is capable of operation over the entire 2.7V to 5.5V input range of the MCP1601 device. Two 2-position DIP switches are used, one to select the output voltage (1.8V, 2.05V, 2.45V or 3.28V) and one that turns the MCP1601 on and off with the other position selecting the mode of operation (PWM-pulse width modulation or PFM-pulse frequency modulation). Surface mount test points are used to apply power and load in addition to probing several points in the test circuit.

The MCP1603 Buck Converter Demo Board uses Microchip’s MCP1603 device in a step-down application. The evaluation board is a fully functional platform to evaluate the MCP1603 buck regulator over its entire input voltage, output voltage, and current range.

The MCP1603 Tiny Reference Design demonstrates the use of Microchip's MCP1603 device in a step-down application. The evaluation board is a fully functional platform to evaluate the MCP1603 buck regulator over the input voltage, output voltage and current range of the device. The evaluation board is designed to show off one of the main advantages of the MCP1603 - it's small size.
The MCP1612 Synchronous Buck Regulator Evaluation Board features Microchip Technology’s 1A 1.4MHz synchronous buck regulator in two buck converter applications. The first application uses the MCP1612 in the 8-leaded MSOP package. This converter has four (0.8V, 1.0V, 1.2V, and 1.4V) selectable output voltages available. The second application features the MCP1612 in the 8-leaded DFN package. This converter also has four (0.8V, 1.7V, 2.4V, and 3.3V) selectable output voltages. A shutdown terminal is also provided for each converter.

The MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP16251 and MCP1640B products. This board demonstrates the MCP16251/MCP1640B in two boost-converter applications with multiple output voltages. It can be used to evaluate both package options (SOT-23-6 and 2x3 mm 8-(T)DFN). The MCP16251 and MCP1640B Synchronous Boost Converters Evaluation Board was developed to help engineers reduce the product design cycle time. Three common output voltages can be selected: 2.0V, 3.3V and 5.0V. The output voltage can be changed with a mini-dip switch that changes the external resistor divider. A switch connected to the EN pin is used to enable and disable the converters. When enabled, the MCP16251/MCP1640B will regulate the output voltage; when disabled, the MCP16251/MCP1640B disconnects the path from input to output for “true-disconnect”.

Devices Supported:  MCP16251, MCP1640B
The MCP1630 Dual Synchronous Buck Regulator demo board is a dual output programmable power supply capable of 20A per output. Both outputs switch at 500 kHz 180° out of phase while powered from a +12V-input source. Additional features include programmable output voltage, power good output indication, sequencing, over current and over temperature.

The MCP1630 Multi-Bay Li-Ion Charger is used to evaluate Microchip’s MCP1630 used in a SEPIC power converter application. The MCP1630 Multi-Bay Li-Ion Charger is capable of charging two single-cell, Li-Ion battery packs in parallel utilizing an input voltage of 10V to 30V (battery packs are not included). Multiple boards can be daisy-chained for additional charger bays. The MCP1630 Multi-Bay Li-Ion Charger is intended for use in pseudo-smart battery charger applications utilizing battery packs containing Microchip’s PS700 Battery Monitor. Standard battery packs can be utilized as well. The MCP1630 Multi-Bay Li-Ion Charger provides a constant current - constant voltage charge with preconditioning, cell temperature monitoring, and battery pack fault monitoring. Each charger bay provides a status and fault indication. The MCP1630 Multi-Bay Li-Ion Charger automatically detects the insertion or removal of a battery pack.
The MCP1630 Low Cost Li-Ion Battery Charger is used to evaluate Microchip’s MCP1630 used in a SEPIC power converter application. The MCP1630 Low Cost Li-Ion Charger is capable of charging a single-cell, Li-Ion battery pack utilizing an input voltage of 6V to 18V (battery packs are not included). The MCP1630 Low Cost Li-Ion Battery Charger provides a constant current - constant voltage charge with preconditioning, cell temperature monitoring, and battery pack fault monitoring. The battery charger provides a status and fault indication. The MCP1630 Low Cost Li-Ion Battery Charger automatically detects the insertion or removal of a battery pack.

Low Cost NiMH Battery Charger board preprogrammed to charge 3 NiMH cells. Charge profile and number of batteries can be changed with firmware. The design uses the MCP1630 High-Speed Analog PWM combined with the PIC microcontroller. Charge current is initially set for 1.35A fast charge.

The MCP16301 5V/600mA Low Noise Evaluation Board is used to demonstrate a high voltage input DC-DC converter design, which can deliver high efficiency, while minimizing high-frequency switching noise. The board steps down high input voltages, up to 30V, to a low output voltage, having more than 90% efficiency and a minimum of 30 mV output ripple. High-frequency input/output noise generated by the switching converters can reach high-noise levels that interfere with other devices powered from the same source. The high amplitude of high-frequency noise can disturb some RF systems. High efficiency is achieved with the MCP16301 buck converter by switching the integrated N-Channel MOSFET at a high speed. The evaluation board is optimized for 12V Input and 100 mA load.

Devices Supported:  MCP16301
Demo board supporting the development of MCP16301 high input voltage, 300mA, D2PAK buck converter.

Devices Supported: MCP16301
Demo board supporting the development of MCP16301 high input voltage, 600 mA, buck converter.

 Devices Supported: MCP16301
The MCP16301 High Voltage Buck-Boost Demo Board is designed to operate from a 5V to 30V input and regulate the output to 12V. Test points for input power and load are provided to demonstrate the capability of the demo board over the entire range. The MCP16301 High Voltage Buck-Boost Demo Board was designed using small surface-mount components to show application size for a high voltage buck-boost design.

Devices Supported: MCP16301
The MCP16301 High-Voltage Single-Inductor Cuk LED Driver Demo Board is designed to operate from a 6V to 18V input and regulate the output current to 300 mA. Test points for input power are provided to demonstrate the capability of the demo board over the entire range. The demo board was designed using small surface-mount components to show application size for a high-voltage single-inductor Cuk LED driver design. Compared with the traditional asynchronous buck converter, the MCP16301 High-Voltage Single-Inductor Cuk LED Driver Demo Board has an additional resistor and capacitor for compensation.

Devices Supported: MCP16301 
The MCP1630V Bi-directional 4 Cell Li-Ion Charger Reference Design demonstrates the use of a bidirectional buck-boost converter used to charge multiple series cell Li-Ion batteries with the presence of an input source (boost) and provide a regulated output voltage when the input source is removed (buck). The board also serves as a platform to evaluate the MCP1630V device.

The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is used to drive and dim one or more power LEDs in a series or parallel topology (depending on the LED’s capability). The reference design may also be used to charge one to four cell NiMH/NiCd or one to two cell Li-Ion battery packs. The board uses the MCP1631HV high-speed analog PWM controller and PIC16F616 microcontroller to generate the proper dimming ratio for LEDs or charge algorithm for NiMH, NiCd and Li-Ion batteries. The boards is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter application.

The MCP1631 Multi-Chemistry Battery Charger Reference Design is a complete stand-alone constant current battery charger for NiMH, NiCd or constant current / constant voltage for Li-Ion battery packs. When charging NiMH or NiCd batteries, the reference design is capable of charging one, two, three or four batteries connected in series. If Li-Ion chemistry is selected, the board is capable of charging one or two series batteries. This board utilizes Microchip’s MCP1631HV (high-speed PIC® MCU PWM TSSOP-20) and PIC16F883 (28 pin SSOP). The input voltage range for the demo board is 5.5V to 16V.

The MCP1631HV Multi-Chemistry reference design board is used to charge one to five NiMH or NiCd batteries, charge one or two cell Li-Ion batteries, or drive one or two 1W LEDs. The board uses the MCP1631HV high speed analog PWM and PIC16F883 to generate the charge algorithm for NiMH, NiCd or Li-Ion batteries. The MCP1631HV Multi-Chemistry Battery Charger is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter application.

The MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design is designed to demonstrate the MCP1640 device’s high-voltage boost capability above its typical output range of 5.5V. This board boosts the low-voltage input to 12V and up to 70 mA load. By changing specific resistors, a lower/higher output than 12V can be obtained. The MCP1640 Input Boost Converter was developed to help engineers reduce product design cycle time. At 2.0V input and 12V output, the board is capable of a maximum of 50 mA load current.
The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design demonstrates how the MCP1640 device, with the True Output Disconnect Shutdown option, works attached to a microcontroller application. This board demonstrates how to optimize battery life using the MCP1640, and an 8-bit low cost PIC microcontroller, to reduce the No Load Input Current for applications that operate in Standby mode for a long period of time. During Standby, the enable signal for the MCP1640 has a low frequency, with less than 1% positive duty cycle. This maintains the output of the MCP1640 device up to 2.3V, which is sufficient to keep the PIC microcontroller live. This solution reduces up to 80% of the No Load Input Current the MCP1640 consumes in PFM Mode.
The MCP1642B Two-Cells to USB Power Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP1642B Switching Boost Regulator. This board demonstrates the MCP1642B capabilities in a boost-converter application supplied from two AA batteries or from an external voltage source. A USB cable can be connected to the output of MCP1642B Two-Cells to USB Power Evaluation Board and used to provide power to portable electronic devices when necessary. It can be used to evaluate the MSOP-8 package. The MCP1642B Two-Cells to USB Power Evaluation Board was developed to help engineers reduce the product design cycle time. On the MCP1642B Two-Cells to USB Power Evaluation Board, the output voltage has the value of 5.0V (the fixed value MCP1642B-50 device is used), resulting in a simple and compact application. The footprints for RT and RB (resistor divider connected to the FB pin) are not populated and will only be used if MCP1642B-ADJ, the adjustable option, will be tested. An enable (EN Switch selection) is used to enable and disable the converter. When enabled, the MCP1642B will regulate the output voltage; when disabled, the MCP1642B will disconnect the path from input to output for “true-disconnect”.
The MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP1643 device. This board demonstrates the MCP1643 in a boost converter application supplied by one AA battery, or from an external voltage source, which drives an LED with three selectable currents. This evaluation board was developed to help engineers reduce the product design cycle time.
Four output currents can be selected: 25, 50, 75 and 100mA. The output current can be changed with a dual switch that changes the external LED current sense equivalent resistance. An enable switch is used to enable and disable the converter. When enabled, the MCP1643 will regulate the output current; when disabled, the MCP1643 disconnects the path from input to output for “true-disconnect”. In this state, the current consumed from the battery is 1 µA, typically.

Devices Supported: MCP1643
The MCP1661 Flyback Converter Reference Design provides an example of a galvanically isolated power supply.The board is used to evaluate and demonstrate Microchip Technology's MCP1661 in the following topology:

- 5V output Isolated Flyback Converter application supplied from 5V typical input voltage.

It is used to evaluate the 5-Lead SOT-23 package.
By changing the LDO, a lower/higher output voltage than 5V will be obtained, but with different capabilities regarding maximum output current and efficiency.
The MCP1665 12V output boost regulator evaluation board is intended to provide a platform allowing customers to easily evaluate the features of the MCP1665 device in a typical boost toplogy while also providing a reference for proper choice and layout of components that are critical to switching regulator implementations.
The MCP1726 1A LDO Evaluation Board features Microchip Technology’s 1A, Low Quiescent Current LDO Regulator in two circuits. The first circuit has the adjustable version of the MCP1726 in the 8-pin 3X3 DFN package. The second circuit has the adjustable version of the MCP1726 in the 8-pin SOIC package. Both circuits have potentiometers that can be used to adjust the output voltage of the LDO. Each circuit also allows the Power Good (PWRGD) output, Shutdown input (SHDN) and Power Good Delay (CDELAY) features of the device to be evaluated. Fixed voltage versions of the device can also be evaluated with this board.

The MCP19035 600 kHz Synchronous Buck Converter Controller is a compact, highly efficient, step-down voltage converter that will convert the input voltage rail (typically 24V) to 5V regulated output voltage. The maximum output current for this step-down converter is 5A. The board demonstrates the capabilities of the MCP19035 600 kHz Synchronous Buck Converter Controller in a typical high-voltage input step-down application. Test points for various signals are provided for measuring different parameters of the converter. The reference design can be modified to support output voltages from 3.3V to 5V by changing a single resistor.
The MCP19111 Battery Charger Eval Board demonstrates the features of a programmable and configurable multi-chemistry battery charger.The MCP19111 can be programmed to make a very flexible battery charger by controlling a high efficiency synchronous buck circuit. The controller dynamically moves from voltage to current controlled charging, following the charge characteristics of the target battery chemistry, and the operation can be adjusted or monitored using the available software GUI, a PICKit™, and a USB connection.
The MCP19111 is a digitally-enhanced PWM controller. It combines a pure-analog PWM controller with a supervisory microcontroller making it a fast, cost-effective, and configurable power conversion solution. The MCP19111 is ideal for standard DC-DC conversion, LED drivers, and battery charging applications. The ARD00609 Demo Board demonstrates how the MCP19111 device operates as a PMBus-enabled POL converter over a wide input voltage and load range. The firmware is preloaded in the MCP19111, no software development is needed. An USB to PMBus bridge is included on board allowing direct communication with a PC. Nearly all operational and control system parameters are programmable and readable via the PMBus. A full featured and easy to use GUI may be downloaded from the Microchip site. Alternatively, the user can program the MCP19111 using their own firmware, tailoring it to their application. The evaluation board contains headers for ICSP™ (In-Circuit Serial Programming™) I2C / PMBus communication and mini USB connector.

Devices Supported: MCP19111

PLEASE NOTE: This kit does NOT contain the hardware programming tool. Please use Microchip’s PICKIT3 (PG164130).
The MCP19117-Flyback Standalone Evaluation Board and Graphical User Interface (GUI) demonstrate the MCP19117 performance in a synchronous Flyback topology. It is configured to regulate load current, and is well suited to drive LED loads. Nearly all operational and control system parameters are programmable through the integrated PIC MCU core. The MCP19117 evaluation board comes preprogrammed with firmware designed to operate with the GUI interface. Microchip’s MPLABX IDE (Integrated Development Environment) can be used to develop and program user-defined firmware, thus customizing it to the specific application. The evaluation board contains headers for ICSP™ (In-Circuit Serial Programming), I2C™ communication as well as UART Full/Half Duplex modes. Several test points have been designed into the PWB for easy access and development purposes. The MCP19117-Flyback Standalone Evaluation Board also demonstrates an optimized PCB (Printed Circuit Board) layout that minimizes parasitic inductance, while increasing efficiency and power density. Proper PCB layout is critical to achieve optimum MCP19117 operation as well as power train efficiency and noise minimization.
The MCP3903 ADC Evaluation Board for 16-bit MCU system provides the ability to evaluate the performance of the MCP3903 six channel sigma-delta ADC. It also provides a development platform for 16-bit PIC-based applications, using existing 100-pin PIM systems.

Devices Supported: MCP3903, PIC24F, PIC24H, dsPIC33, MCP2200
The MCP73113 OVP Single-Cell Li-Ion Battery Charger Evaluation Board demonstrates the features of Microchip’s MCP73113 “Single-Cell Li-Ion / Li-Polymer Battery Charge Management Controller with Input Overvoltage Protection”.
The MCP73213 OVP Dual-Cell Li-Ion Battery Charger Evaluation Board demonstrates the features of Microchip’s MCP73213 Dual-Cell Li-Ion / Li-Polymer Battery Charge Management Controller with Input Overvoltage Protection.

The MCP7382X Li-Ion Battery Charger Evaluation Board features three circuits utilizing the MCP73826, MCP73827 and MCP73828 devices to demonstrate simple, stand-alone, linear charging of single cell Lithium-Ion/Lithium-Polymer battery packs (the battery packs are not included).

Two evaluation boards are provided in the MCP73831 Evaluation Kit. The boards are set up to evaluate simple, stand-alone, linear charging of single cell Li-Ion / Li-Polymer battery packs (the battery packs are not included). Each board design provides constant current charging followed by constant voltage charging with automatic charge termination. In addition, the MCP73831-2AC board provides preconditioning of deeply depleted cells.

Each board design provides evaluation of the MCP73831 in two package options: a SOT23-5 and a 2 mm x 3 mm, 8-Lead DFN for higher power handling capability.
The MCP73833 Evaluation Board is an evaluation and demonstration tool for Microchip’s MCP73833/4 Stand-Alone Linear Li-Ion/Li-Polymer Charge Management Controllers. Two independent circuits are provided (only one is populated) for charging single cell Li-Ion / Li-Polymer battery packs (the battery packs are not included). Each circuit design provides constant current charging followed by constant voltage charging algorithm with automatic charge termination and battery temperature monitoring. In addition, the installed MCP73833-FCI/MF provides preconditioning of deeply depleted cells and a safety timer.

The MCP73833 Evaluation Board provides for evaluation of the MCP73833/4 in two package options: a MSOP-10 (not populated) and a 3mm x 3mm, 10-Lead DFN for higher power handling capability (MCP73833-FCI/MF installed).
The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board demonstrates Microchip's stand-alone Linear Li-Ion Battery Chargers - MCP73837 and MCP73838. The MCP73837/8 require only minimum components to implement a complete battery charge management circuit. The MCP73837/8 are designed to select AC-Adapter or USB-Port Power Source automatically where AC-Adapter provides the charge current when both sources are present.

The MCP73837/8 AC/USB Dual Input Battery Charger Evaluation Board comes with a 10-pin DFN MCP73837 and a 10-pin MSOP MCP73838 pre-installed. The different packages can be easily evaluated by replacing the device, a resistor and a LED where the patterns have been pre-designed on the board layout.

Portable electronics has played an important role in modern era. Due to the natural characteristics of Li-Ion / Li-Polymer batteries, they are the most popular power sources for mobile devices. However, extra care in design is always important to implement Li-Ion / Li-Polymer batteries. System Power Path Management allows end-users to charge their batteries without interruption.

This reference design is developed to assist product designers in reducing product design cycle and time by utilizing Microchip’s favorite stand-alone Li-Ion battery charge management controllers with system power path management.

The MCP73855 Battery Charger Evaluation Board is set up to evaluate simple, stand-alone, linear charging of single cell Li-Ion/Li-Polymer battery packs (the battery packs are not included). The board design provides constant current charging followed by constant voltage charging with automatic charge termination. As provided, the MCP73855 Battery Charger Evaluation Board is set for a fast charge current level of 85 mA. The MCP73855 is equipped with shutdown control, status indicator, and safety timers. Refer to the data sheet for details on the device features.

The MCP73871 Demo Board with Voltage Proportional Current Control is designed to demonstrate Microchip's stand-alone linear Li-Ion battery charger with system power path and load sharing management control solution. The MCP73871 integrates the required elements to meet design challenges when developing new Li-Ion / Li-Polymer batteries powered products.

The MCP73871 Demo Board with Voltage Proportional Current Control is designed to deliver minimum 1.5A total current to system load and to a single cell Li-Ion battery at 4.2V preset voltage regulation (4.1V, 4.35V and 4.4V options are also available for MCP73871). The board has a dip switch helping to decides the input power source between AC-DC wall adapter and USB port (AC/USB) and control input current limits, enable charge timer and enable charging.

The MCP73871 Demo Board with Voltage Proportional Current Control comes with a factory preset low-battery indicator (LBO) when input is absent. The preset value is 3.2V and STAT1 LED (green) with turn ON if the battery voltage is below the threshold voltage.

The MCP73871 Evaluation Board is designed to demonstrate Microchip's stand-alone linear Li-Ion battery charger with system power path and load sharing management control solution. The system load is also supported by the Li-Ion battery when input power is disconnected. A number of device options allow the MCP73871 device to be utilized in a variety of applications. Refer to the MCP73871 data sheet (DS22090).

Typical applications for the reference design are: Smart Phones, PDA, Portable Media Players, MP3 Players, Digital Cameras, Handheld Medical devices, Bluetooth headsets, Ultra-Mobile PC and Portable Communicators.
The MCP73X23 Lithium Iron Phosphate Battery Charger Evaluation Board demonstrates the features of Microchip’s MCP73123 and MCP73223 Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection.
The MIC2128 Evaluation Board is a constant-frequency, synchronous buck controller
featuring a unique adaptive on-time control architecture. The MIC2128 operates over
an input supply range of 4.5V to 75V. The output voltage is adjustable down to 0.6V
with a guaranteed accuracy of ±1%. The device operates with programmable switching
frequency from 270 kHz to 800 kHz
The MIC23158/9 Evaluation Board has been developed to evaluate the capabilities of the MIC23158/9 family of devices. The board is populated with the MIC23159 device and it’s set for the following voltages:
•Regulator 1: 1.8V.
•Regulator 2: 1.5V.
The evaluation board can be easily modified by interchanging the MIC23159 device with MIC23158.​
The MIC23158/9 Evaluation Board features independent Enable connectors with individual pull-up resistors.
To check the status of each regulator, power-good connectors are available for each regulator. The board can be powered from two independent voltage sources or a 0Ω resistor can be placed on R3 so that both converters be powered form the same voltage source.

MIC24045 Evaluation Kit

Part Number: ADM00764

No Longer Available
The MIC24045 Evaluation Board is designed to serve all of the devices that make up Microchip’s MIC2404x family of parts. As a result, only a subset of its features is needed for the MIC24045 evaluation. Specific for the evaluation of the MIC24045 device, the VIN supply ranges from 4.5V to 19V and output voltage from 0.64V to 5.25V in 5 mV, 10 mV, 30 mV and 50 mV steps at 5A. Additionally, an on-board load transient generator circuit and connections for loop gain measurements are provided. A connector (J10) matching the MCP2221 Breakout Module I2C interface is provided for board compatibility with I2C.
MIC2877 is a compact and highly-efficient 2MHz synchronous boost regulator with a 6.5A switch. It features a bidirectional true load disconnect function which prevents any leakage current between the input and output when the device is disabled. MIC2877 operates in bypass mode automatically when the input voltage is greater than the target output voltage. At light loads, the boost converter goes to PFM mode to improve the efficiency. In shutdown mode, the regulator consumes less than 2uA. MIC2877 also features an integrated anti-ringing switch to minimize EMI, over voltage and over current protection, UVLO and thermal shutdown. MIC2877 is available in a FTQFN22-8LD package with a junction temperature range of -40°C to +125°C.​
The MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board allows the control and monitoring of the MTD6505 device using PC software connected to the board via a USB connection. The included board software provides several features including VDD control and monitoring, pulse-width modulation (PWM) control, speed and current consumption monitoring. It also allows selecting the RPROG resistor value for fan fitting.

Devices Supported: MTD6505
The PAC1921 is a dedicated power monitoring device with a configurable analog output. This device is unique in that all power related information is available on the 2-wire/I2C© compatible interface and power, current, or voltage is available on the analog output..  The PAC1921 High-Side Current/Power Sensor Evaluation Board package provides users with the means to exercise device functionality while connected either to target systems (Sys Mode) or while utilizing onboard sources (Demo Mode).
The PSRR and Digital Noise Evaluation Board (104-00139) is designed to explore and quantify the effects of power and digital noise on system performance. These experiments will help system designers understand the impact that power and digital noise can have in their design.

The PSRR and Digital Noise Evaluation Board supports measurement of Power Supply Rejection Ratio (PSRR) performance of Operational Amplifiers, as well as illustrates effects of Digital Interface spikes on Chip Select pins (and VDD, VOUT, VIN pins). The various measurements demonstrate importance of IDDQ on PSRR and Digital Noise performance.

A variety of Op Amps and Low Dropout regulators, and one Switching Regulator, plus selectable low-pass RC filters in VDD, allow the student to evaluate output (sinusoidal) noise versus sinusoidal frequency.

The PCB uses individual Gain=100 Op Amp circuits, plus Gain=10 output coaxial driver, achieving an referred-to-input resolution of 1 microvolt or less.

The PCB generates 0.25volt Digital Spikes, with 1nanoSec edges, for injection into an Op Amp. With DVM monitoring, sub-microvolt effects are easily observed.

An un-populated SMA footprint allows Radio Frequency injection, to examine Op Amp behavior with modulated BlueTooth or Cell Phone signals.

The SOT223-3 Voltage Regulator Evaluation Board is designed to evaluate and test voltage regulators. By soldering the desired device to the evaluation board, the user can easily validate several parameters of the device.

The SOT223-5 Voltage Regulator Evaluation Board is designed to be used to facilitate the evaluation of Microchip’s voltage regulators or to be used as a standalone voltage regulator board. Jumpers have been placed on the board to facilitate testing of specific voltage regulator parameters. The jumpers may also be used to select pull-up and pull-down voltage levels.
The SOT23-3 Voltage Regulator Evaluation Board is designed to evaluate and test voltage regulators. By soldering the desired device to the evaluation board, the user can easily validate several parameters of the device.

The SOT23-3 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board. This allows the user to attach the voltage regulator of their choosing to the board and perform quiescent current, ground current, Power Supply Ripple Rejection (PSRR), and other desired tests.

The SOT23-3 Voltage Regulator Evaluation Board is based upon a modular concept which will allow the user to plug in additional boards to increase the test capability of the voltage regulator.
The SOT23-5 Voltage Regulator Evaluation Board is designed to provide functional evaluation of Microchip Voltage Regulators that utilize the SOT23-5 package. The SOT23-5 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board. This allows the user to attach the voltage regulator of their choosing to the board and perform quiescent current, ground current, PSRR, and other desired tests.

The SOT89-3 Voltage Regulator Evaluation Board is designed to provide functional evaluation of Microchip Voltage Regulators that utilize the SOT89-3 package.

The SOT89-3 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board. This allows the user to attach the voltage regulator of their choosing to the board and perform quiescent current, ground current, PSRR, and other desired tests.

The TC1016/17 LDO Linear Regulator Evaluation Board allows the user to evaluate Microchip’s 80 mA (TC1016) and 150 mA (TC1017) Low Dropout (LDO) regulators. The evaluation board contains two independent LDO circuits that allow the user to evaluate the TC1016 and TC1017 devices in the 5-pin SC-70 and the 5-pin SOT-23 packages. The evaluation board is populated with 1.8V and 3.0V TC1017 devices. Any of the available output voltage values of the devices (1.2V to 5.0V) can be used on this board. Fixed input and output capacitor values of 1.0 µF are hard wired on the board while alternate values of 4.7 µF and 10 µF can be selected via jumpers. Line and load step circuitry is also provided.

The TC110 Boost Converter Demo Board can charge Li-Ion Batteries with single-cell Alkaline battery or 2-cell Alkaline battery at maximum 500 mA constant current. The TC110 Boost Converter Demo Board is used to evaluate Microchip’s TC110 PFM/PWM Step-Up DC/DC Controller.

The TC110 is a step-up (Boost) switching controller that can regulate output voltage with a typical start-up voltage of 0.9V. The TC110 Boost Converter Demo Board also includes a MCP73832 Miniature Single-Cell, Fully Integrated Li-Ion, Li-Polymer Charge Management Controllers. Microchip’s MCP73832 is a highly advanced linear charge management controllers for use in space-limited, cost-sensitive applications.

The TC110 Boost Converter Demo Board is a ready to use solution for portable applications when no DC plug is available. The TC110 Boost Converter Demo Board can efficiently transfer energy from Alkaline batteries to Li-Ion battery pack.

The TC115 PFM/PWM Boost Converter Evaluation Board is a complete, step-up, switch-mode, dc-dc power converter. The TC115 PFM/PWM Boost Converter Evaluation Board generates a regulated 3.0V output at load currents up to 110 mA. Different output voltages are obtainable by replacing the fixed 3.0V output TC115 with a fixed 3.3V or 5.0V device. The evaluation board requires the use of an external input voltage source (0.9V – Vout). The TC115 PFM/PWM Boost Converter Evaluation Board is provided with an aluminum electrolytic output capacitor. However there exist additional surface-mount pads to evaluate tantalum or ceramic capacitors.

The TC1303 Adjustable Output Regulator provides a unique combination of a 500 mA synchronous buck regulator and 300 mA Low-Dropout Regulator (LDO) with a Power-Good (PG) monitor to provide a highly integrated solution for dual supply applications. The device provides a very cost-effective solution with minimal board space because of the high-frequency operation of the buck converter, the minimal external component requirement and the small DFN (dual flat no leads) package size.

The demo board is used to evaluate the TC1303C device over the input voltage range, output voltage and current range for both the synchronous buck regulator output and the low dropout linear regulator output.

Test points are provided to monitor the Input voltage, Output voltage, shut down control and power good signal.

The TC1303B Dual-Output Regulator with Power-Good Output Demo Board can be used to evaluate the TC1303B device over the input voltage range and output current range for both the synchronous buck regulator output and the low-dropout linear regulator output.

Test points are provided for input power, output loads, shutdown control and power-good monitoring.

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board is designed to provide functional evaluation of Microchip Voltage Regulators that utilize the TO220-3 and TO263-3 package.

The TO220-3 / TO263-3 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board. This allows the user to attach the voltage regulator of their choosing to the board and perform quiescent current, ground current, PSRR, and other desired tests.

The TO220-5 / TO263-5 Voltage Regulator Evaluation Board is designed to provide functional evaluation of Microchip Voltage Regulators that utilize the TO220-5 and TO263-5 package. The TO220-5 / TO263-5 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board. This allows the user to attach the voltage regulator of their choosing to the board and perform quiescent current, ground current, PSRR, and other desired tests.
This UCS1002 and PIC16F1503 Reference Design is a fully functional universal serial bus (USB) charger compatible with a large variety of portable devices. The UCS1002 programmable port-power controller can deliver up to 2.5A charging current. Features like current monitoring and programmable charger emulation profiles make it a good candidate to be used with a PIC® Microcontroller for intelligent USB charging solutions. The algorithm implemented in the PIC microcontroller applies multiple charger emulation profiles and selects the one that provides the highest current to the attached device. For more information regarding the code, refer to AN1827 – "UCS1002 Highest Current Algorithm Using a PIC® Microcontroller” (DS20001827A). The board can be powered from 5V directly or through the MCP16323 Synchronous Buck Regulator which allows 6-18V input.