PMP7979 Reference Design

Texas Instruments

12Vin to 67Vin: 54Vout at 4.8A: 260W Dual-Phase Boost Reference Design


PMP7979 is a synchronous dual-phase boost power supply using the LM5122 controllers. The design accepts an input voltage of 12 V to 67 V: and boosts a 54-V output rail that is capable of sourcing 4.8-A continuous current. The LM5122 has an internal current source to keep the high-side FET to run at 100% duty cycle: which allows a bypass operation when the input voltage is greater than the configured output voltage.

  • 12 Vin to 67 Vin: 54 Vout at 5-A out; IC capable of 4.5 Vin to 65 Vin260-W PoutPeak efficiency at 98%Switching frequency 100 kHz per phase (200 kHz)Board size: 4 in x 3 in
Product Categories
  • Power management


Part Number Name Companion Part
LM5122 LM5122 Buy Datasheet

Bill Of Materials

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP7979 Gerber (from PMP7850) 07 Mar 2016 ZIP 250
PMP7979 CAD Files 07 Mar 2016 ZIP 556
PMP7979 PCB (from PMP7850) 07 Mar 2016 PDF 611
PMP7979 Assembly Drawing (from PMP7850) 07 Mar 2016 PDF 144
PMP7979 BOM 07 Mar 2016 PDF 124
PMP7979 Schematic 07 Mar 2016 PDF 485