Product details

Vin (Min) (V) 4.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 3.2 Current limit (A) 0.25 to 3.6 Product type Charge port controller Operating temperature range (C) -40 to 85 Enable Active High Number of switches 1 Rating Automotive
Vin (Min) (V) 4.5 Vin (Max) (V) 6.5 Continuous current (Max) (A) 3.2 Current limit (A) 0.25 to 3.6 Product type Charge port controller Operating temperature range (C) -40 to 85 Enable Active High Number of switches 1 Rating Automotive
WQFN (RTE) 16 9 mm² 3 x 3
  • AEC-Q100 Qualified With the Following Results:
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • 4.5-V to 6.5-V Operating Range
  • 47-mΩ (typ.) High-Side MOSFET
  • 3.2-A Maximum Continuous Output Current
  • ±5% CS Output for Cable Compensation
  • CDP Mode per USB Battery Charging Specification 1.2
  • Automatic DCP Modes Selection:
    • Shorted Mode per BC1.2 and YD/T 1591-2009
    • 2.7-V Divider 3 Mode
    • 1.2-V Mode
  • D+ and D– Client Mode for System Update
  • D+ and D– Short-to-VBUS Protection
  • D+ and D– ±8-kV Contact and ±15-kV Air Discharge ESD Rating (IEC 61000-4-2)
  • –40°C to 125°C Junction Operating Temperature
  • 16-Pin QFN (3-mm × 3-mm) Package
  • AEC-Q100 Qualified With the Following Results:
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • 4.5-V to 6.5-V Operating Range
  • 47-mΩ (typ.) High-Side MOSFET
  • 3.2-A Maximum Continuous Output Current
  • ±5% CS Output for Cable Compensation
  • CDP Mode per USB Battery Charging Specification 1.2
  • Automatic DCP Modes Selection:
    • Shorted Mode per BC1.2 and YD/T 1591-2009
    • 2.7-V Divider 3 Mode
    • 1.2-V Mode
  • D+ and D– Client Mode for System Update
  • D+ and D– Short-to-VBUS Protection
  • D+ and D– ±8-kV Contact and ±15-kV Air Discharge ESD Rating (IEC 61000-4-2)
  • –40°C to 125°C Junction Operating Temperature
  • 16-Pin QFN (3-mm × 3-mm) Package

The TPS2549-Q1 device is a USB charging port controller and power switch with a current-sense output that is able to control an upstream supply. This allows it to maintain 5 V at the USB port even with

heavy charging currents. This is important in systems with long USB cables where significant voltage drops can occur while fast-charging portable devices.

The TP2549-Q1 47-mΩ power switch has two selectable, programmable current limits that support port power management by providing a lower current limit that can be used when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and an upstream supply unable to provide full current to all ports simultaneously.

The DCP_Auto scheme detects and selects the proper D+ and D– settings to communicate with the attached device, so that it can fast-charge at full current. The integrated CDP detection enables up to 1.5-A fast charging of most portable devices with simultaneous data communication.

The unique client-mode feature allows software updates to client devices, but avoids power conflicts by turning off the internal power switch while keeping the data line connection.

Additionally, the TPS2549-Q1 device integrates short-to-VBUS protection for D+ and D– to prevent damage when D+ and/or D– unexpectedly short to VBUS. To save space in the application, the TPS2549-Q1 device also integrates ESD protection to pass IEC61000-4-2 without external circuitry on D+ and D–.

The TPS2549-Q1 device is a USB charging port controller and power switch with a current-sense output that is able to control an upstream supply. This allows it to maintain 5 V at the USB port even with

heavy charging currents. This is important in systems with long USB cables where significant voltage drops can occur while fast-charging portable devices.

The TP2549-Q1 47-mΩ power switch has two selectable, programmable current limits that support port power management by providing a lower current limit that can be used when adjacent ports are experiencing heavy loads. This is important in systems with multiple ports and an upstream supply unable to provide full current to all ports simultaneously.

The DCP_Auto scheme detects and selects the proper D+ and D– settings to communicate with the attached device, so that it can fast-charge at full current. The integrated CDP detection enables up to 1.5-A fast charging of most portable devices with simultaneous data communication.

The unique client-mode feature allows software updates to client devices, but avoids power conflicts by turning off the internal power switch while keeping the data line connection.

Additionally, the TPS2549-Q1 device integrates short-to-VBUS protection for D+ and D– to prevent damage when D+ and/or D– unexpectedly short to VBUS. To save space in the application, the TPS2549-Q1 device also integrates ESD protection to pass IEC61000-4-2 without external circuitry on D+ and D–.

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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 protection.
Similar functionality to the compared device.
TPS25830-Q1 ACTIVE USB Type-C™ and SDP/CDP charge port converter with short to BATT protection and cable compensation This product is a higher integrated USB Type-C solution with a synchronous DC/DC converter.
TPS25846-Q1 ACTIVE USB BC1.2 5-V 3.5-A output, 36-V input synchronous step-down converter with client mode support This product is a higher integrated USB Type-A solution with a synchronous DC/DC converter, supports Client Mode.

Technical documentation

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Type Title Date
* Data sheet TPS2549-Q1 Automotive USB Charging Port Controller and Power Switch With Cable Compensation datasheet (Rev. C) PDF | HTML 27 Jul 2020
Application note How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device PDF | HTML 26 Feb 2020
Application note Monitoring Load Current With the TPS2549 and TPS254900 CS Pin 31 Aug 2017
Application note TPS2549 CDP-SDP Auto Switch 19 Jul 2017
EVM User's guide TPS2549Q1EVM-729 User's Guide (Rev. A) 15 Sep 2016
Application note TPS2549-Q1 Production Silicon Change List 19 Jul 2016
Technical article A complete power solution for automotive USB ports 12 Apr 2016

Design & development

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

Evaluation board

TPS2549Q1EVM-729 — TPS2549Q1EVM Automotive USB Charging Port Controller & Power Switch Evaluation Module

TPS2549Q1EVM-729 is a USB charging port controller with an integrated power switch and USB 2.0 high-speed data line (DP/DM) switches. TPS2549Q1EVM-729 provides the electrical signatures on DP_IN and DM_IN to support all current charging schemes. TPS2549Q1EVM-729 incorporates USB cable voltage drop (...)

Not available on TI.com
Simulation model

TPS2549-Q1 Unencrypted PSpice Transient Model Package (Rev. A) TPS2549-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

Simulation model

TPS2549 IBIS Model TPS2549 IBIS Model

Reference designs

PMP20249 — CISPR 25 Class 4 Rated Design for Dual Automotive USB Charger Reference Design

PMP20249 is an EMI optimized design for dual automotive USB charger system utilizing the LMS3635 and LMS3655 regulator ICs (400kHz fully-integrated synchronous buck for automotive application) and TPS2549 USB switch (TPS2549-Q1 automotive USB charging port controller with integrated power switch (...)
Reference designs

PMP40286 — Automotive USB Type-C™ DFP 5V 3A + USB Type-A 5V 2.4A Charger Reference Design

PMP40286 is a dual port car charger reference design.  The output goes to a 5V 3A USB Type-C™ port and a 5V 2.4A USB type-A port. The USB Type-C port can be backwards compliant with BC1.2 and DCP configurations. The type-A port is capable of compensating for the effects on voltage droop (...)
Reference designs

PMP9795 — Automotive USB Charging Port Supply Reference Design With Programmable Cable Compensation

This reference design includes a power management circuit  capable of controlling a remote USB charging port in an automotive application environment. The circuit can be supplied directly from the car battery rail. It uses a small and highly efficient step-down converter, the TPS62130A-Q1, to (...)
Reference designs

PMP11670 — Dual USB Car Charger Reference Design with Port Power Management

The PMP11670 reference design is a dual channel USB charger for automotive application. It includes a high performance buck converter which provides total 3.5A load current for both channels. The Port Power Management feature of port controllers improves the thermal performance by limiting the max (...)
Reference designs

PMP9496 — CISPR 25 Class 5 Rated 10 W Reference Design for Automotive USB Charger System

The PMP9496  reference design is a conducted EMI-optimized (CISPR 25 Class 5) 10 W design for  efficient automotive USB charger application utilizing the LM53603 regulator IC (2.1MHz fully-integrated synchronous buck for automotive application ) and TPS2549 USB switch(TPS2549-Q1 (...)
Reference designs

PMP9765 — Automotive USB Charging Port Supply Reference Design with Charging Controller and Cable Compensation

This reference design includes a power management circuit which is capable of controlling a remote USB charging port in an automotive application environment. The circuit can be supplied directly from the car battery rail. It uses a small and highly efficient step down converter, the TPS62130A-Q1, (...)
Reference designs

PMP4471 — Automotive USB Charger with Integrated Linear Droop Compensation Reference Design

The PMP4471 reference design provides detailed data for evaluating and verifying a USB charger, which uses a USB charge controller and a buck converter .  The design is capable of compensating for the effects on Vdroop when a smartphone / tablet is connected to the USB charger using a cable (...)
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  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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