PMP9637 Reference Design

Texas Instruments

Automotive Boost Power Supply for Audio Applications

Description

The PMP9637 4-phase boost power supply enables high-efficiency boost dc/dc conversion of an 8.5V to 18V input Automotive battery voltage to 44V output at 17 Amperes in a compact form factor for Audio applications. The TPS40090 4-phase PWM controller is used with two (2) UCC27324D 4A dual FET drivers and CSD18534Q5A 60V NexFETs to deliver  748W output power in only 120mm x 70mm.

Features
  • • >95% Efficiency at 14VIN: 44Vout/7A.• 120mmx70mm total power supply area• 200mV pk-to-pk output voltage load transient response• 10mV pk-pk output voltage • Smooth monotonic start up• 4-phase interleaving enables lower input and ouput ripple current: faster load transient response: improved power handling capability: improved thermal performance: and higher reliability>95% Efficiency at 14VIN: 44Vout/7A.120mmx70mm total power supply area200mV pk-to-pk output voltage load transient response10mV pk-pk output voltageSmooth monotonic start up4-phase interleaving enables lower input and ouput ripple current: faster load transient response: improved power handling capability: improved thermal performance: and higher reliability
Applications
  • Automotive external amplifier
  • Aftermarket audio amplifier
Product Categories
  • Power management

Parts

Part Number Name Companion Part
CSD18534Q5A CSD18534Q5A Buy Datasheet
TPS40090 TPS40090 Buy Datasheet
UCC27324 UCC27324 Buy Datasheet

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP9637 BOM (Rev. A) 21 Sep 2015 PDF 102
PMP9637 Schematic (Rev. A) 21 Sep 2015 PDF 162
PMP9637 Altium 27 Oct 2014 ZIP 114
PMP9637 PCB 27 Oct 2014 ZIP 98
PMP9637 Gerber 27 Oct 2014 ZIP 157