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AC-DC Power Conversion and Controller ICs

AC-DC Power Conversion for a Growing Number of Interconnected Applications

As microcontroller (MCU)-based systems are becoming increasingly more interconnected in homes, offices, smart cities, hospitals, automobiles and other applications, they require access to the AC power that is predominant in our power distribution infrastructure. Our portfolio of AC-DC controllers offers access to and better control of power management from AC sources to help simplify your system design.

AC-DC Power Conversion Products

AC-DC Auxiliary Controller ICs

  • Enable AC power without a dedicated primary supply
  • Enable control of primary power with tight coupling to a secondary MCU
  • Simplify AC power access with tighter functional integration using the Simplified Feedback Implementation
Explore MCP1012

Inductor-less Offline Controller ICs

  • Enable small, non-isolated offline power supply design with no magnetics
  • Ideal for single voltage range input with small load current (< 1W)
  • Can power MCU directly from AC line without transformer stepdown
Parametrics

Switch-Mode PWM Controllers

A unique input circuit allows these devices to self-start directly from a high-voltage input and  take the power to operate from one of the outputs of the converter it is controlling.

This enables very efficient operation while maintaining input-to-output galvanic isolation that is only limited in voltage by the insulation system of the associated magnetic assembly.

Parametrics

Offline Linear Regulators

This high-voltage, low-output current, adjustable linear regulator has a wide operating input voltage range of 13.2–450V.

The output voltage can be adjusted from 1.20–440V provided that the input voltage is at least 12V greater than the output voltage.

Explore LR8
Featured

MCP1012 Primary-Side Auxiliary Controller

The MCP1012 enables the system start up, gating and protection of an offline flyback converter for a secondary MCU. Its tight integration with the MCU simplifies the implementation of the power function using fewer devices and at a reduced cost. Other system benefits include direct measurement and accurate regulation of voltage and/or current, higher loop bandwidth by direct loop closure and easier system communication for load-referenced systems. This high-voltage, self-powered device also offers protection features, a MOSFET driver and low-power sleep mode.

Quick Glance:

  • Direct operation off rectified AC power with transition to primary bias winding as secondary MCU assumes control
  • Gate driver for the primary-side FET
  • Internal current regulator sets biases during startup
  • When combined with secondary MCU, eliminates independent primary-side auxiliary supply
  • Overvoltage/undervoltage protection, overcurrent protection and Over Temperature Protection
  • Sleep mode option (controlled by MCU) for reduced standby power

Design Resources

MPLAB Analog Designer

MPLAB® Analog Designer

This tool provides design suggestions for common circuit needs, estimates performance for common modifications, and can export to MPLAB® Mindi™ Analog Simulator for verification.

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MPLAB Mindi Analog Simulator

MPLAB® Mindi™ Analog Simulator

This simulation tool uses a SIMetrix/SIMPLIS environment to model circuit behavior, reducing design time with software debugging for initial design verification.

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MicroCHECK Design Service

MicroCHECK Design Service

Our complimentary MicroCHECK design review service, which offers insight from the initial concept to the final PCB layout, is available to customers who are using our products in their projects.

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