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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 (RTE) 16 9 mm² 3 x 3 open-in-new Find other USB power switches & charging port controllers

Features

  • 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

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Description

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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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 10
Type Title Date
* Datasheet TPS2549-Q1 Automotive USB Charging Port Controller with Integrated Power Switch datasheet (Rev. C) Jul. 27, 2020
Application notes How to Pass MFi Overcurrent Protection Test With USB Charger and Switch Device Feb. 26, 2020
Application notes Monitoring Load Current With the TPS2549 and TPS254900 CS Pin Aug. 31, 2017
Application notes TPS2549 CDP-SDP Auto Switch Jul. 19, 2017
User guides TPS2549Q1EVM-729 User's Guide (Rev. A) Sep. 15, 2016
Application notes TPS2549-Q1 Production Silicon Change List Jul. 19, 2016
Technical articles A complete power solution for automotive USB ports Apr. 12, 2016
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

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
99
Description

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 (...)

Features
  • TPS2549Q1 Built in IEC 61000-4-2 Protection on DP_IN and DM_IN pins
  • Linear USB Cable Voltage Droop Compensation
  • TPS2549Q1 is fully AEC Q100 qualified
  • Built in Short to VBUS Protection and Notification on DP_IN and DM_IN pins
  • LM53603AQPWPRQ1 High Performance 2.1MHz Automotive qualified DC/DC converter

Design tools & simulation

SIMULATION MODELS Download
SLUM495A.ZIP (46 KB) - PSpice Model
SIMULATION MODELS Download
SLUM624.ZIP (23 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
CISPR 25 Class 4 Rated Design for Dual Automotive USB Charger Reference Design
PMP20249 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive USB Type-C™ DFP 5V 3A + USB Type-A 5V 2.4A Charger Reference Design
PMP40286 — 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive USB Charging Port Supply Reference Design With Programmable Cable Compensation
PMP9795 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Dual USB Car Charger Reference Design with Port Power Management
PMP11670 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
CISPR 25 Class 5 Rated 10 W Reference Design for Automotive USB Charger System
PMP9496 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 Automotive (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive USB Charging Port Supply Reference Design with Charging Controller and Cable Compensation
PMP9765 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive USB Charger with Integrated Linear Droop Compensation Reference Design
PMP4471 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

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