Programmable Output 50W 5-20Vout Buck-Boost USB Type-C Car Charger Adapter Reference Design
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Key Document


PMP10726 is a synchronous 4-switch buck-boost converter which utilizes the LM5175 controller for USB Type-C car charger adapter applications. The output voltage can be selected for 5V, 9V, 15V, or 20V with a maximum output power of 50W by using I2C to adjust the TPL0401A-10 digital potentiometer. This design also uses the TPS70933 LDO to power the digital potentiometer. The LM5175 average current loop sets a maximum output current of 6.25A. Additional pulse-by-pulse current limiting is inherent in the current-mode controller.

  • 6V to 30V input, output 5V @ 4.5A to 20V @ 2.5A
  • LM5175 buck-boost controller to achieve over 90% efficiency over all operating conditions
  • Compact size, slim form factor, suitable for car charger adapters
  • Solution size: 14mm x 39mm
  • 97.5% peak efficiency

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
(Output Voltage 3)
(Output Voltage 4)
Vin (Min) (V)6666
Vin (Max) (V)24242424
Vout (Nom) (V)591520
Iout (Max) (A)
Output Power (W)22.522.522.550
TopologyBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 Switch

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5175  42V Wide Vin 4-Switch Synchronous Buck-Boost Controller  Buck-boost & inverting regulators  Sample & Buy View Design Kits & Evaluation Modules
TPL0401A-10  128-Taps Single-Channel Digital Potentiometer With I2C Interface  Data converters  Sample & Buy View Design Kits & Evaluation Modules
TPS709  150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5175 Download Download
Download Download
TPL0401A-10 Download Download
TPS709 Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 6111 03 Aug 2016
Design files (6)
Title Type Size (KB) Date
ZIP 309 03 Aug 2016
ZIP 2018 03 Aug 2016
PDF 1186 03 Aug 2016
PDF 153 03 Aug 2016
PDF 66 03 Aug 2016
PDF 374 03 Aug 2016

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