PMP20327 Reference Design

Texas Instruments

Variable Outputs 2-Cell Battery 200W Heater Element Power Stage Buck Boost Reference Design

Description

PMP20327 is a synchronous 4-switch buck-boost converter which utilizes the LM5175 controller as a heater element power stage in applications such as E-Cigarettes. The output voltage can be selected from 1V to 10V at 20A to 45A using a trim resistor at the FB pin with a 0.2V to 3.1V bias voltage. This design also uses a non-sync boost regulator LMR62014 to provide the bias power for LM5175 during low Vin operation. The LM5175 pulse-by-pulse current limiting is inherent in the current-mode controller. The board includes enable: synchronization and power good functions. This design supports resistive heating element ranging from 0.1Ω to 0.5Ω to support various 200W operating conditions.

Features
  • 6V to 8.6V in: output 1V to 10V @ 20A to 45ALM5175 Buck-Boost controller to achieve over 90% efficiency over entire operating conditionsCompact size: slim form factor: suitable for E-CigaretteSolution Size: 26mm x 57mm98% peak efficiency
Applications
Product Categories
  • Power management

Parts

Part Number Name Companion Part
LMR62014 LMR62014 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)
PMP20327 Gerber 26 Jul 2016 ZIP 371
PMP20327 CAD Files 26 Jul 2016 ZIP 509
PMP20327 PCB 26 Jul 2016 PDF 1277
PMP20327 Assembly Drawing 26 Jul 2016 PDF 149
PMP20327 BOM 26 Jul 2016 PDF 123
PMP20327 Schematic 26 Jul 2016 PDF 362