TPS254900A-Q1

ACTIVE

Automotive USB host charger with short-to-VBATT protection

TPS254900A-Q1

ACTIVE

Product details

Product type Charge port controller Vin (min) (V) 4.5 Vin (max) (V) 6.5 Continuous current (max) (A) 3.2 Current limit (A) 0.25 to 3.6 Operating temperature range (°C) -40 to 85 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.1 Rating Automotive
Product type Charge port controller Vin (min) (V) 4.5 Vin (max) (V) 6.5 Continuous current (max) (A) 3.2 Current limit (A) 0.25 to 3.6 Operating temperature range (°C) -40 to 85 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.1 Rating Automotive
WQFN (RVC) 20 12 mm² 4 x 3
  • 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
  • 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

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.

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

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Type Title Date
* Data sheet TPS254900A-Q1 Automotive USB Host Charger With Short-to-VBATT Protection datasheet (Rev. B) 27 Jul 2020
Application note How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device PDF | HTML 26 Feb 2020
EVM User's guide TPS254900AQ1EVM-003 Evaluation Module 10 Oct 2017

Design & development

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

Evaluation board

TPS254900AQ1EVM — TPS254900A-Q1 Evaluation Module with LMR14030 3.5A Step-Down Regulator

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 (...)
User guide: PDF
Not available on TI.com
Simulation model

TPS254900A-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM627A.ZIP (35 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
WQFN (RVC) 20 Ultra Librarian

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