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48V Cooling Fan

With the advent of mild hybrid engines and the incorporation of the 48V vehicle bus, many electrical systems within the vehicle will utilize this higher voltage bus for more efficient operation. One such application is the engine cooling fan. Microchip offers several components with key features that can help you design a complete, cost-effective, reliable and efficient system.

From dsPIC® Digital Signal Controllers (DSCs) for motor control applications to high-voltage MOSFET drivers and various other components rated for high-temperature (150°C) operation, Microchip offers all the elements necessary for a complete embedded control system. And to aid in your development, the motorBench® Development Suite helps to get your motor up and running quickly by performing accurate measurements of critical motor parameters and tuning feedback control gains.

48V Cooling Fan diagram

Digital Signal Controllers

Several key features of dsPIC DSCs make them ideal for motor control applications. Featuring an integrated Digital Signal Processor (DSP), a single-cycle 16 × 16 MAC and 40-bit accumulators, along with Core Independent Peripherals (CIPs) that offload several functions from the Central Processing Unit (CPU), dsPIC DSCs are excellent choices for math-intensive applications.

Three-Phase MOSFET Drivers

For ease of design, an integrated MOSFET driver provides an interface between the digital signal controller and the six MOSFET array controlling the three-phase motor. These devices feature low propagation delays, anti-shoot through outputs which are guaranteed to not overlap, and an overcurrent protection and an internal diode that charges the high-side gate drive bootstrap capacitor.

  • MIC4607 – 85V, three-phase MOSFET driver with adaptive dead-time, anti-shoot-through and overcurrent protection

LIN Transceivers

Our lineup of LIN transceiver products ranges from standalone to LIN transceivers to fully integrated System-in-Packages (SIPs) that include a voltage regulator and a microcontroller. Our LIN transceivers are compliant with the industry-standard LIN bus specifications and are approved by the major global OEMs.

  • MCP2003B – Standalone 8-pin LIN transceiver
  • ATA663254 – LIN system basis chip including 5.0V voltage regulator and NRES-output
  • ATA663454 – LIN system basis chip including 5V voltage regulator, watchdog and high-side switch

Voltage Regulators

Our basic power management solutions include several automotive-grade linear and switched voltage regulators. Linear regulators feature low dropout voltages, ultra-low quiescent currents, wide input voltage ranges, load dump and reverse batter protection. Switching regulators support buck, boost, buck-boost and SEPIC designs from 100 mA to 12A output currents.

  • MIC5280 – High-performance, low dropout regulator, 25 mA, 120V, adjustable Vout from 1.215 to 5V.
  • MCP1790 – 30V, 70 mA, load dump protected linear voltage regulator
  • MCP16311 – 30V, 1A PFM/PWM high-efficiency synchronous buck regulator
  • MCP16331 – 50V 1A non-synchronous buck regulator

Operational Amplifiers

Our portfolio of operational amplifiers (op amps) includes general purpose, precision and zero-drift amplifiers. If your design requires low offset voltages or drift, low quiescent currents or enhanced EMI rejection, we have a solution that fits your needs. Our op amps are available in single-, dual- and quad-configurations in very small form factors.

  • MCP6004 – General-purpose quad op amp, 1MHz, low power, rail-to-rail
  • MCP6032 – High-precision dual op amp, 0.9 µA quiescent current, 150 µV offset voltage
  • MCP6V28 – 620 µA, 2 MHz auto-zeroed op amp
Development Tools

Development Tool


The Automotive Networking Development Board is a low-cost modular development system for Microchip’s 8-bit, 16-bit, and 32-bit microcontrollers targeting CAN and LIN network related applications. The board supports devices using the 100-pin Plug-In Module (PIM) connector, has four mikroBUS™ sockets for MikroElektronika™ Click boards™ and includes an edge connector for backwards compatibility to PICtail™ Plus boards used with the Explorer 16 Development Board.

The LIN Serial Analyzer development tool enables you to monitor and communicate to a Local Interface Network (LIN) bus using a Personal Computer (PC). This is a powerful tool that can be used to send messages, monitor the bus traffic, perform errors checks and filter messages amongst many other features, allowing you to develop and debug the system implementation.

The dsPIC33EV 5V CAN-LIN Starter Kit features the dsPIC33EV256GM106 Digital Signal Controller (DSC) for automotive and motor control applications. The Starter Kit contains serial data ports for CAN, LIN and SENT, a self-contained USB programming/debug interface, and an expansion footprint for flexibility in application hardware development. This board allows you to explore three popular automotive and industrial serial data formats (CAN, LIN and SENT).

The MIC4607 is an 85V, three-phase MOSFET driver that features a fast (35 ns) propagation delay time and 20 ns driver rise/fall times for a 1 nF capacitive load. TTL inputs can be separate high- and low-side signals or a single PWM input with high and low drive generated internally. High- and low-side outputs are guaranteed to not overlap in either mode. The MIC4607 includes overcurrent protection as well as a high-voltage internal diode that charges the high-side gate drive bootstrap capacitor.

The MCP8063 12V 3-Phase BLDC Sensorless Fan Controller Demonstration Kit allows the control and monitoring of Microchip 12V fan driver devices, such as the MCP8063 or MTD6501, using a PC software connected to the demo board via a USB connection. The MCP8063 12V 3-Phase BLDC Sensorless Fan Controller Demonstration Board software provides several features, such as fan driver power supply control and monitoring, pulse-width modulation (PWM) control, and speed and current consumption monitoring. It also allows automatic application testing.

The MAQ5280 Evaluation Board demonstrates the features of the MAQ5280, a high-performance linear regulator, offering a very low-noise output with a very wide input voltage operating range, from 4.5V to 120V DC input voltage.

The Explorer 16/32 Development Kit is a flexible, convenient and ready-to-start development, demonstration and testing platform for 16-bit PIC24 MCUs, dsPIC DSCs and 32-bit PIC32 MCUs. The board accepts Processor Plug-In Modules (PIM) and hardware expansion is possible through the use of PICtail Plus daughter cards and MikroElektronika accessory boards.

The dsPICDEM™ MCHV-3 Development System is intended to aid in the rapid evaluation and development of a wide variety of motor control applications using a dsPIC Digital Signal Controller (DSC). This development system is targeted to control Brushless DC (BLDC) motors, Permanent Magnet Synchronous Motors (PMSM), and AC Induction Motors (ACIM) in sensor or sensorless operation.

The dsPICDEM MCLV-2 Development Board provides a cost-effective method of evaluating and developing sensored or sensorless Brushless DC (BLDC) and Permanent Magnet Synchronous Motor (PMSM) control applications. The board supports Microchip’s 100-pin Plug-In-Modules with dsPIC33 DSCs and PIC32MK microcontrollers.

This development board for ATA6612C, ATA6613C and ATA6614Q ICs is designed to accelerate programming, prototyping and testing of new LIN designs.