Automotive USB Charger with Linear Droop Compensation Reference Design
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The TIDA-00160 reference design provides detailed data for evaluating and verifying a USB charger, which uses a USB charge controller, a buck controller and a shunt amplifier.

This design demonstrates an automotive USB charging port that offers short-to-battery protection. With the help of the shunt amplifier, the design aims to compensate the effects on Vdroop when the smartphone/tablet is connected to the USB charger using a cable that is roughly 2-3 meters in length.

  • Compliance wtih almost all major smartphone/tablet manufacturers is supported due to programmable current limit up to 3A, BC 1.2 compliant devices being supported, and D+/D- divider modes of 2.7V/2.7V and 1.2V.
  • Drop in and BOM compatible wtih TPS2543-Q1.
  • The TI devices in this design are AEC-Q100 qualified.
  • Supports CDP/SDP auto switch for small industry standard footprint based devices.

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (5)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18503Q5A  40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.3 mOhm  MOSFETs  Sample & Buy Not Available
INA213-Q1  AEC-Q100, 26V, bi-directional, high-precision current sense amplifier  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM25117-Q1  Automotive Grade 4.5-42V Wide Vin, Current Mode Synchronous Buck Controller with Tracking  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
TPD2E001-Q1  Automotive Dual 1.5-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for USB 2.0  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules
TPS2546-Q1  Automotive USB charging port controller and power switch  Power management  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18503Q5A VSONP (DQJ)| 8 Download
INA213-Q1 Download Download
LM25117-Q1 Download Download
TPD2E001-Q1 Download Download
TPS2546-Q1 Download

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Technical documentation

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User guide (2)
Title Type Size (KB) Date
PDF 225 16 Jun 2014
PDF 927 15 May 2014
Design files (4)
Title Type Size (KB) Date
PDF 132 15 May 2014
PDF 73 15 May 2014
PDF 56 15 May 2014
ZIP 112 15 May 2014

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