PMP7967 Reference Design

Texas Instruments

Power Solution for an Engineering Equipment Fuel Injector

Description

The PMP7967 converts a DC input of 6V-42V to an output of 90V at 1.5A.  The design uses four interleaved LM5122 boost controllers with each controller switching at 100kHz. The resulting 4-phase boost converter has a ripple frequency of 400kHz. Freqeucny can also be synchronized to an external signal. Four 330μF aluminum electrolytic capacitors are used at the output to support sudden load current demands in the fuel injector solenoids.

Features
  • 4-phase boost converter with 90V/1.5A output100kHz switching frequency with 400kHz effective input and output ripples6V to 42V input voltage range: good for 12V or 24V lead acid batteries1.32mF total output capacitance to support sudden load demands
Applications
Product Categories
  • Power management

Parts

Part Number Name Companion Part
CD4017B CD4017B Buy Datasheet
LM5122 LM5122 Buy Datasheet
LMC555 LMC555 Buy Datasheet
LP2951 LP2951 Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP7967 Altium 17 Dec 2013 ZIP 1073
PMP7967 BOM 14 Aug 2013 PDF 95
PMP7967 Schematic 14 Aug 2013 PDF 210