200W Adjustable Output Dual Port USB Type-C™ Charger Reference Design
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Key Document


This reference design is a dual port 200W synchronous buck-boost utilizing the LM5176 controller for automotive applications. This design can operate from 6V to 40V, and output 5V, 9V, 15V, and 20V at 5A. Output adjustment is achieved using TPS25740B power delivery controller. Two ports are operating independently, and each port is synced via an external clock with 180 degree out of phase. Switching frequency is set to 220kHz, and a 4 layer PCB is used.

  • 6V to 40V in, output 5V, 9V, 15V and 20V @ 5A
  • 98% peak efficiency
  • Over current, over voltage and over temperature protection
  • Dual port synchronized via external clock circuit
  • Each port is operated 180 degrees out of phase

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Schematic/Block Diagram

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Design Guide

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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)40404040
Vout (Nom) (V)591520
Iout (Max) (A)5555
Output Power (W)254575100
TopologyBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 SwitchBuck Boost- 4 Switch

TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CD74HC4017-Q1  Automotive Catalog Decade Counter/Divider with 10 Decoded Outputs  Specialty logic  Sample & Buy View Design Kits & Evaluation Modules
LM5176  55V wide VIN synchronous 4-switch buck-boost controller  Buck-boost & inverting  Sample & Buy View Design Kits & Evaluation Modules
LM74700-Q1  Low Iq, ideal diode controller  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TLV3501A-Q1  Automotive Catalog 4.5ns Rail-to-Rail, High Speed Comparator in Microsized Packages  Amplifiers  Sample & Buy Not Available
TPS25740B  USB Type-C™ and USB PD Source Controller  USB  Not Available View Design Kits & Evaluation Modules
TPS798-Q1  50 mA, 3 V to 50 V, Micropower, Low-Dropout Linear Regulator  Power management  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CD74HC4017-Q1 Download -
Download Download
LM5176 Download Download
LM74700-Q1 Download -
TLV3501A-Q1 Download Download
TPS25740B Download Download
TPS798-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1382 02 May 2018
Design files (6)
Title Type Size (KB) Date
PDF 474 18 May 2018
ZIP 1750 18 May 2018
PDF 108 18 May 2018
ZIP 683 02 May 2018
PDF 1853 02 May 2018
PDF 399 02 May 2018

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