MIC45212-1: 26V/14A DC-to-DC Power Module

Key Features
  • No compensation required
  • Up to 14A output current
  • >93% peak efficiency
  • Output voltage: 0.8V to 5.5V with ±1% accuracy
  • Adjustable switching frequency from 200kHz to 600kHz
  • Enable input and open-drain power good output
  • Hyper Speed Control™ (MIC45212-2) architecture enables fast transient response
  • HyperLight Load® (MIC45212-1) improves light load efficiency
  • Supports safe startup into pre-biased output
  • CISPR22, Class B complaint
  • –40°C to +125°C junction temperature range
  • Thermal shutdown protection
  • Short-circuit protection with hiccup mode
  • Adjustable current limit
  • Available in 64-pin 12mm × 12mm x 4mm QFN package
Typical Application

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Related Information

Data Sheet
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Application Notes
Package Outlines
MICRELSim Center
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Free Samples
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Related Literature
  • High power density point-of-load conversion
  • Servers, routers, networking, and base stations
  • FPGAs, DSP, and low-voltage ASIC power supplies
  • Industrial and medical equipment

General Description

Micrel’s MIC45212 is a synchronous step-down regulator module, featuring a unique adaptive ON-time control architecture. The module incorporates a DC-to-DC controller, power MOSFETs, bootstrap diode, bootstrap capacitor, and an inductor in a single package; simplifying the design and layout process for the end user.

This highly-integrated solution expedites system design and improves product time-to-market. The internal MOSFETs and inductor are optimized to achieve high efficiency at a low output voltage. The fully-optimized design can deliver up to 14A current under a wide input voltage range of 4.5V to 26V, without requiring additional cooling.

The MIC45212-1 uses Micrel’s HyperLight Load® (HLL) while the MIC45212-2 uses Micrel’s Hyper Speed Control™ architecture, which enables ultra-fast load transient response, allowing for a reduction of output capacitance. The MIC45212 offers 1% output accuracy that can be adjusted from 0.8V to 5.5V with two external resistors. Additional features include thermal shutdown protection, input undervoltage lockout, adjustable current limit, and short circuit protection. The MIC45212 allows for safe start-up into a pre-biased output.

Ordering Information
Part Number Switching Freq. Junction Temp. Range Features Package Lead Finish
MIC45212-1YMP 200kHz to 600kHz -40°C to +125°C HyperLight Load® 64-Pin 12mm x 12mm QFN Pb-Free
MIC45212-2YMP 200kHz to 600kHz -40°C to +125°C Hyper Speed Control™ 64-Pin 12mm x 12mm QFN Pb-Free

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