Novel, High Efficiency Full-Bridge Rectifier Reference Design


Design files


TIDA-00858 implements a high-efficiency approach to fullbridge rectifier. This reference design replaces diodes with four N-Channel MOSFETs,combined with LM74670-Q1 smart diode controllers in a full-bridge rectifier configuration. LM74670-Q1 is an effective zero-IQ replacement of diode loss. This design can produce a rectified DC voltage without diode forward voltage drop for AC-input voltage up to 45 V. It can handle AC input of 300-Hz frequency and up to 100-A output current with less thermal management compared to a schottky diode rectifier.

  • Supports AC-input voltage up to 45 V
  • Fast response to dynamic current reversal: < 5 µsec
  • More efficienty for high-current rectifiers
  • Supports AC-input frequency up to 300 Hz
  • Zero IQ and smaller reverse leakage current compared to diodes rectifier
Output voltage options TIDA-00858.1
Vin (Min) (V) 8
Vin (Max) (V) 35
Vout (Nom) (V) 35
Iout (Max) (A) 20
Output Power (W) 700
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology OR'ing
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUB53.PDF (949 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRIV7.ZIP (1450 K)

Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Ideal diode/ORing controllers

LM74670-Q10.48-V to 42-V, zero IQ automotive ideal diode rectifier controller with 70uA gate drive

Data sheet: PDF | HTML

CSD18532KCS60-V, N channel NexFET™ power MOSFET, single TO-220, 4.2 mOhm

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide TIDA-00858 Test Results Nov. 30, 2015

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