35V to 60V Input, 600W Output Dual-Phase Buck Converter Design with Greater than 97% Efficiency


Design files


This 600W wide voltage input dual phase power converter uses two emulated current-mode controllers 180 degrees out of phase to minimize input and output ripple current. Compared to conventional isolated power converters, this synchronous buck architecture provides a reduced footprint and BOM cost at higher levels of efficiency, greater than 97% over several operating conditions.

  • Two-phase buck converter
  • 600W output power
  • 35V to 60V maximum input voltage range
  • Output voltage of 12V at 50A
  • This reference design board is tested and supported with design files and an application note

Output voltage options PMP7282.1
Vin (Min) (V) 35
Vin (Max) (V) 60
Vout (Nom) (V) 12
Iout (Max) (A) 50
Output Power (W) 600
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous^Multiphase
Communications equipment
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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.

SLUUA30.PDF (1936 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

SLUR965.PDF (278 K)

Detailed schematic diagram for design layout and components

SLUR966.PDF (91 K)

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

SLUC388.ZIP (266 K)

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

SLUUA31.PDF (993 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

LM51166-100V Wide Vin, Current Mode Synchronous Buck Controller

Data sheet: PDF | HTML
General-purpose op amps

LMC7101Single, 15.5-V, 1.1-MHz operational amplifier

Data sheet: PDF | HTML
Real-time clocks (RTCs) & timers

LMC555World’s smallest 555 timer with low power, high accuracy and a Fmax of 3MHz

Data sheet: PDF | HTML
Shunt voltage references

LMV4311.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Data sheet: PDF

Technical documentation

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Type Title Date
Test report PMP7282 Test Results Oct. 07, 2012

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