TPS25810A-Q1 USB Type-C DFP Controller and Power Switch With Digital Cable Compensation
- SLVSE37 April 2017 TPS25810A-Q1
  
  PRODUCTION DATA.

Full reading width

DATA SHEET

TPS25810A-Q1 USB Type-C DFP Controller and Power Switch With Digital Cable Compensation

1 Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade T: –40°C to 105°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
USB Type-C Rev. 1.2 Compliant DFP Controller
Connector Attach or Detach Detection
STD, 1.5-A, or 3-A Capability Advertisement on CC
Super-Speed Polarity Determination
V_BUS Application and Discharge
V_CONN Application to Electronically Marked Cable
Audio and Debug Accessory Identification
0.7-µA (typ) I_DDQ When Port Is Unattached
Three Input Supply Options
- IN1: USB Charging Supply
- IN2: V_CONN Supply
- AUX: Device Power Supply
Power Wake Supports Low Power in System Hibernate (S4) and OFF (S5) Power States
34-mΩ (typ) High-Side MOSFET
Fixed 3.4-A I_LIM (±7.1%)
Digital Cable Compensation, I_OUT ≥ 1.95 A
Package: 20-Pin WQFN (3 mm × 4 mm) ⁽¹⁾

^{CC pins are IEC-61000-4-2 rated}

1. CC pins are IEC-61000-4-2 rated

2 Applications

Automotive Infotainment Systems
Automotive Back-seat USB Charging

3 Description

The TPS25810A-Q1 device is a USB Type-C downstream-facing port (DFP) controller with an integrated 3-A rated USB power switch. The device monitors the Type-C configuration channel (CC) lines to determine when a USB device is attached. If an upstream-facing port (UFP) device is attached, it applies power to V_BUS and communicate the selectable V_BUS current-sourcing capability to the UFP via the pass-through CC line. If the UFP is attached using an electronically marked cable, it also applies V_CONN power to the cable CC pin. The TPS25810A-Q1 can identify and report when Type-C audio or debug accessories are attached.

Device Information⁽¹⁾

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS25810A-Q1	WQFN (20)	3.00 mm x 4.00 mm

For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

4 Revision History

DATE	REVISION	NOTE
April 2017	*	Initial release

Changes from * Revision () to * Revision

5 Description (Continued)

The TPS25810A-Q1 device draws less than 0.7 µA (typical) from the AUX pin when no USB load is connected. Additional system power saving is achievable in the S4 and S5 system power states by using the UFP output to disable the high-power 5-V supply when no UFP is attached. In this mode, the device is capable of running from an auxiliary supply (AUX), which can be a lower-voltage supply (3.3 V), typically powering the system microcontroller in low-power states (S4 and S5).

The TPS25810A-Q1 device integrates a 34-mΩ power switch with a fixed 3.4-A current limit independent of the Type-C current advertisement level. The FAULT output signals when the switch is in an overcurrent or overtemperature condition. The CS output is used for implementing digital cable compensation for load currents greater than 1.95 A. Cable compensation, also known as line drop compensation, is a means of offsetting voltage droop from the USB power supply to the UFP load.

6 Pin Configuration and Functions

TPS25810A-Q1 RVC Package

20-Pin WQFN With Exposed Thermal Pad

Top View

Pin Functions

PIN		I/O	DESCRIPTION
NAME	NO.	I/O	DESCRIPTION
AUDIO	17	O	Open-drain logic output that asserts when a Type-C audio accessory is identified on the CC lines
AUX	5	I	Auxiliary input supply. Connect to an always-alive system rail to use the power-wake feature. Short to IN1 and IN2 if only one supply is used.
CC1	11	I/O	Analog input/output that connects to the Type-C receptacle CC1 pin
CC2	13	I/O	Analog input/output that connects to the Type-C receptacle CC2 pin.
CHG	7	I	Charge-logic input to select between standard USB (500 mA for a Type-C receptacle supporting only USB 2.0, and 900 mA for Type-C receptacle supporting USB 3.1) or a Type-C current-sourcing ability.
CHG_HI	8	I	High-charge logic input to select between 1.5-A and 3-A Type-C current sourcing capability. Valid when CHG is set to Type-C current.
CS	20	O	Open-drain output enabling digital cable compensation when load current is greater than 1.95 A, nominal.
DEBUG	16	O	Open-drain logic output that asserts when a Type-C debug accessory is identified on the CC lines
EN	6	I	Enable logic input. Turns the device on and off
FAULT	1	O	Fault event indicator. Open-drain logic output that asserts low to indicate a current-limit or thermal-shutdown event due to overtemperature.
GND	12	—	Power ground
IN1	2, 3	I	V_BUS input supply. Internal power switch connects IN1 to OUT.
IN2	4	I	V_CONN input supply. Internal power switch connects IN2 to CC1 or CC2. Short to IN1 if only one supply is used.
OUT	14, 15	O	Power switch output
POL	18	O	Polarity open-drain logic output that signals which Type-C CC pin is connected to the CC line. This gives the information needed to multiplex the super-speed lines. Asserted when the CC2 pin is connected to the CC line in the cable.
REF	10	I	Analog input used to generate the internal current reference. Connect a 1% or better, 100-ppm, 100-kΩ resistor between this pin and REF_RTN.
REF_RTN	9	I	Precision signal-reference return. Connect to the REF pin via a 100-kΩ, 1% resistor.
UFP	19	O	Open-drain logic output that asserts when a Type-C UFP is identified on the CC lines.
Thermal pad	—	—	Thermal pad on the bottom of the package. The thermal pad is internally connected to GND and is used to heat-sink the device to the circuit board. Connect the thermal pad to the GND plane.