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DC-DC Switching Controller ICs

DC-DC Switching Controllers for Isolated and Non-Isolated Applications

We offer a comprehensive portfolio of high-performance isolated and non-isolated analog DC-DC controllers and Digitally Enhanced Power Analog (DEPA) controllers that support flyback, forward, push-pull, half-bridge, full-bridge, SEPIC, buck and boost topologies. Our easy-to-use and cost-effective Constant On-Time (COT) controllers allow you to design feature-rich, flexible and high-performance DC-DC switching power supplies.

Control Methods and Modulation

  • Constant On-Time (COT)
  • Current-mode control
  • Voltage-mode control

Protection Features

  • Output Overvoltage Protection (OVP)
  • Undervoltage Lockout (UVLO)
  • Overcurrent Protection (OCP)
  • Over-Temperature Protection (OTP)

Power Controllers and Conversion ICs

Isolated/Offline DC-DC Controller ICs

Supports Multiple Topologies

Our flyback, forward and push-pull controllers provide simple and cost-effective replacements to support offline or DC/DC conversion for systems needing galvanic isolation in various flyback, SEPIC, Ćuk, half-bridge or full-bridge switching power configurations.

Non-Isolated DC-DC Buck (Step-Down) Controller ICs

We offer the broadest portfolio of the highest-performing Pulse-Width Modulation (PWM) buck controllers, including application-specific and general-purpose PWM controllers. These flexible solutions target DC/DC power conversion circuits for end-equipment power supplies.

DC-DC Boost (Step-Up) Controller ICs

With External Power Switch

An external power switch boost controller is a high-efficiency synchronous boost PWM controller. Its powerful output drivers allow the controller to supply large output currents when the controller is paired with an appropriate external MOSFET, its powerful output drivers allow it to supply large output currents.

Driverless Controllers

Our driverless controllers deliver a variety of features and work with external drivers and MOSFETs or with external drivers used with MOSFETs or GaNs.

Recommended for New Designs

MIC2132

75V, Dual-Phase, Advanced COT Controller for Multi-Phase Operation

  • Input voltage range: 4.5V to 75V
  • Adjustable output voltage from 0.6V to 28V
  • 0.6V internal reference with ±1% accuracy
  • ±0.5% reference accuracy for −40°C to 105°C

MIC2133

75V, Dual-Phase Advanced COT PWM Controller

  • Input voltage range: 4.5V to 75V
  • Input down to 2V when VDD = 5V from external supply
  • Adjustable output voltage from 0.6V to 28V
  • 0.6V internal reference with ±1% accuracy

MIC21LV32

36V, Dual-Phase Advanced COT Controller for Multi-Phase Operation

  • Input voltage range: 4.5V to 36V
  • Adjustable output voltage from 0.6V to 28V
  • 0.6V internal reference with ±1% accuracy
  • ±0.5% reference accuracy for −40°C to 105°C

MIC21LV33

36V, Dual-Phase Advanced COT PWM Controller

  • Input voltage range: 4.5V to 36V
  • Input down to 2V when VDD = 5V from external xupply
  • Adjustable output voltage from 0.6V to 28V
  • 0.6V internal reference with ±1% accuracy

MIC2104

75V Synchronous Buck Controllers Featuring Adaptive On-Time Control

  • Distributed power systems
  • Networking/telecom infrastructure
  • Printers, scanners, graphic cards and video cards

MIC2128

75V Synchronous Buck Controller Featuring Adaptive On-Time Control With External Soft Start

  • Networking/telecom equipment
  • Base stations and servers
  • Distributed power systems
  • Industrial power supplies
  • Automotive power supplies

MIC45404

19V/5A Ultra-Low-Profile Synchronous Step-Down Power Module With Hyper Speed Control® Architecture

  • Servers, data storage, routers and base stations
  • FPGAs, SSDs, DSPs and low-voltage ASIC power