Automotive USB charging port controller and power switch

TPS2546-Q1 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS254900A-Q1 ACTIVE Automotive USB host charger with short-to-VBATT protection This product has higher quality reliability with Polyimid layer, provides short-to-battery and IEC ESD protection.

Product details

Product type Charge port controller Vin (min) (V) 4.5 Vin (max) (V) 5.5 Continuous current (max) (A) 2.5 Current limit (A) 0.25 to 3 Operating temperature range (°C) -40 to 125 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) 5.5 Continuous current (max) (A) 2.5 Current limit (A) 0.25 to 3 Operating temperature range (°C) -40 to 125 Enable Active High Number of switches 1 Current limit accuracy at 1 A 0.1 Rating Automotive
WQFN (RTE) 16 9 mm² 3 x 3
  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Operating Range: 4.5 V to 5.5 V
  • D+/D– CDP/DCP Modes per USB Battery Charging Specification 1.2
  • D+/D– Shorted Mode per Chinese Telecommunication Industry Standard YD/T
    1591-2009
  • Supports Non-BC1.2 Charging Modes by Automatic Selection:
    • D+/D– Divider Modes 2 V/2.7 V and 2.7 V/2 V
    • D+/D– 1.2-V Mode
  • Supports Sleep-Mode Charging and Mouse/Keyboard Wakeup
  • Automatic SDP/CDP Switching for Devices That Do Not Connect to CDP Ports
  • Load Detection for Power Supply Control in S4/S5 Charging and Port Power Management in All Charge Modes
  • Compatible With USB 2.0 and 3.0 Power Switch Requirements
  • I73-mΩ (Typical) High-Side MOSFET
  • Adjustable Current-Limit up to 3 A (Typical)
  • Operating Range: 4.5 V to 5.5 V
  • Max Device Current:
    • 2 µA When Device Disabled
    • 270 µA When Device Enabled
  • Drop-In and BOM Compatible With TPS2543
  • Available in 16-Pin WQFN (3.00 mm × 3.00 mm) Package
  • AEC-Q100 Qualified
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Operating Range: 4.5 V to 5.5 V
  • D+/D– CDP/DCP Modes per USB Battery Charging Specification 1.2
  • D+/D– Shorted Mode per Chinese Telecommunication Industry Standard YD/T
    1591-2009
  • Supports Non-BC1.2 Charging Modes by Automatic Selection:
    • D+/D– Divider Modes 2 V/2.7 V and 2.7 V/2 V
    • D+/D– 1.2-V Mode
  • Supports Sleep-Mode Charging and Mouse/Keyboard Wakeup
  • Automatic SDP/CDP Switching for Devices That Do Not Connect to CDP Ports
  • Load Detection for Power Supply Control in S4/S5 Charging and Port Power Management in All Charge Modes
  • Compatible With USB 2.0 and 3.0 Power Switch Requirements
  • I73-mΩ (Typical) High-Side MOSFET
  • Adjustable Current-Limit up to 3 A (Typical)
  • Operating Range: 4.5 V to 5.5 V
  • Max Device Current:
    • 2 µA When Device Disabled
    • 270 µA When Device Enabled
  • Drop-In and BOM Compatible With TPS2543
  • Available in 16-Pin WQFN (3.00 mm × 3.00 mm) Package

The TPS2546-Q1 is a USB charging port controller and power switch with an integrated USB 2.0 high-speed data line (D+/D–) switch. TPS2546-Q1 provides the electrical signatures on D+/D– to support charging schemes listed under Feature Description. TI tests charging of popular mobile phones, tablets, and media devices with the TPS2546 to ensure compatibility with both BC1.2 compliant, and non-BC1.2 compliant devices.

In addition to charging popular devices, the TPS2546-Q1 also supports two distinct power management features, namely, power wake and port power management (PPM) through the STATUS pin. Power wake allows for power supply control in S4/S5 charging and PPM the ability to manage port power in a multi-port application. Additionally, system wake up (from S3) with a mouse/keyboard (both low speed and full speed) is fully supported in the TPS2546-Q1.

The TPS2546-Q1 73-mΩ power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Two programmable current thresholds provide flexibility for setting current limits and load detect thresholds.

The TPS2546-Q1 is a USB charging port controller and power switch with an integrated USB 2.0 high-speed data line (D+/D–) switch. TPS2546-Q1 provides the electrical signatures on D+/D– to support charging schemes listed under Feature Description. TI tests charging of popular mobile phones, tablets, and media devices with the TPS2546 to ensure compatibility with both BC1.2 compliant, and non-BC1.2 compliant devices.

In addition to charging popular devices, the TPS2546-Q1 also supports two distinct power management features, namely, power wake and port power management (PPM) through the STATUS pin. Power wake allows for power supply control in S4/S5 charging and PPM the ability to manage port power in a multi-port application. Additionally, system wake up (from S3) with a mouse/keyboard (both low speed and full speed) is fully supported in the TPS2546-Q1.

The TPS2546-Q1 73-mΩ power-distribution switch is intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. Two programmable current thresholds provide flexibility for setting current limits and load detect thresholds.

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Technical documentation

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Type Title Date
* Data sheet TPS2546-Q1 USB-Charging Port Controller and Power Switch With Load Detection datasheet (Rev. B) PDF | HTML 03 Aug 2016
Selection guide USB Type-A Power Switch and Charging Controller Selector Guide (Rev. F) 24 May 2018
Application note Effective System ESD Protection for TPS254x USB Charging Port Controllers 03 Jun 2016
Application note TPS2546/TPS2546-Q1 Production Silicon Checklist 27 Jul 2015
Application note Step-Down Converter with Cable Voltage Drop Compensation 26 Jun 2014

Design & development

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

Reference designs

PMP4425 — Automotive USB Charger with Linear Droop Compensation Reference Design

The PMP4425 reference design provides detailed data for evaluating and verifying a USB charger, which uses a USB charge controller, a buck converter and a shunt amplifier. Additionally the design demonstrates an automotive USB charging port that offers short-to-battery protection. With the help of (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00160 — Automotive USB Charger with Linear Droop Compensation Reference Design

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 (...)

Design guide: PDF
Schematic: PDF
Package Pins Download
WQFN (RTE) 16 View options

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