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Automotive USB host charger with short-to-VBATT protection

TPS254900A-Q1

ACTIVE

Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 3.2 Current limit (A) 0.25 to 3.6 Enable Active High Number of switches 1 Rating Automotive open-in-new Find other USB power switches & charging port controllers

Package | Pins | Size

WQFN (RVC) 20 12 mm² 3 x 4 open-in-new Find other USB power switches & charging port controllers

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • 4.5-V to 6.5-V Input Operating Range
  • 3.5-V (typ) UVLO to Support Start-Stop
  • Integrated 45-mΩ (typ.) High-Side MOSFET
  • 3.2-A Maximum Continuous Output Current
  • VBUS ±5% Cable Compensation Accuracy at Connector
  • Supports USB BC 1.2 CDP and SDP Modes
  • Short-to-Battery Protection on OUT, DP_IN, and DM_IN Pins
  • DP_IN and DM_IN IEC 61000-4-2 Rated
    • ±8-kV Contact and ±15-kV Air Discharge
  • 20-Pin QFN (3-mm × 4-mm) Package

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Description

The TPS254900A-Q1 device is a USB charging-port controller and power switch with short-to-battery protection. This feature provides protection on OUT, DM_IN and DP_IN. These three pins withstand voltage up to 18 V.

The internal MOSFET turns off quickly when the short-to-battery condition occurs. Rapid turnoff is very important to protect the upstream DC-DC converter, processor, or hub data lines.

The TPS254900A-Q1 has a low UVLO of 3.5 V, so that the power switch does not turn off during start-stop.

The TPS254900A-Q1 45-mΩ power switch has two selectable, adjustable current limits that support port power management by changing to a lower current limit when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and upstream power supplies with limited capacity.

The TPS254900A-Q1 device has a current-sense output that is able to control an upstream supply, which allows it to maintain 5 V at the USB port even with heavy charging currents. This feature is important in systems with long USB cables where significant voltage drops can occur with fast-charging portable devices.

A current monitor allows a system to monitor the load current in real time by monitoring the IMON voltage. The current monitor is very useful and can be used for dynamic port-power management.

The TPS254900A-Q1 device also provides ESD protection capability per IEC 61000-4-2, level 4 on DP_IN and DM_IN.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet TPS254900A-Q1 Automotive USB Host Charger With Short-to-VBATT Protection datasheet (Rev. B) Jul. 27, 2020
Application notes How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device Feb. 26, 2020
User guides TPS254900AQ1EVM-003 Evaluation Module Oct. 10, 2017
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
75
Description
The TPS254900AQ1 evaluation module (TPS254900AQ1EVM) contains evaluation and reference circuitry for the TPS254900AQ1, which is a USB charging controller and power switch, integrated VBUS and D+/D- short to battery protection, cable compensation, current monitor (IMON) and IEC ESD protection, which (...)
Features
  • Offer VBUS, D+ and D- short to 12V battery protection
  • TPS254900AQ1 Built in IEC 61000-4-2 ESD Protection on DP_IN and DM_IN pins
  • Cable compensation ability up to 5.3V with 2.4A based on cable resistance of 200mΩ
  • Up to 3.2A output current capacity

Design tools & simulation

SIMULATION MODELS Download
SLUM627A.ZIP (35 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
WQFN (RVC) 20 View options

Ordering & quality

Support & training

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