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

(ACTIVE) PMP7979

Description & Features

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Key Document

Description

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.

Features
  • 12 Vin to 67 Vin, 54 Vout at 5-A out; IC capable of 4.5 Vin to 65 Vin
  • 260-W Pout
  • Peak efficiency at 98%
  • Switching frequency 100 kHz per phase (200 kHz)
  • Board size: 4 in x 3 in

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP7979.1
(Output Voltage 1)
Vin (Min) (V)12
Vin (Max) (V)67
Vout (Nom) (V)54
Iout (Max) (A)4.8
Output Power (W)259.2
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Multiphase

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5122  3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5122 Download Download
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Technical Documents

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User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1094 07 Mar 2016 8
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 250 07 Mar 2016 7
ZIP 556 07 Mar 2016 3
PDF 611 07 Mar 2016 5
PDF 144 07 Mar 2016 3
PDF 124 07 Mar 2016 3
PDF 485 07 Mar 2016 20

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