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10 Application and Implementation
Information in the following applications sections is not part of the TI component specification,
and TI does not warrant its accuracy or completeness. TI's customers are responsible for
determining suitability of components for their purposes, as well as validating and testing their design
implementation to confirm system functionality.
10.1 Application Information
The typical applications of the TPS65981 include chargers, docking systems, monitors, notebooks, tablets,
ultrabooks, and any other product supporting USB Type-C, USB-PD, or both as a power source, power sink,
data DFP, data UFP, or dual-role port (DRP). The typical applications outlined in the following sections detail
a
Fully-Featured USB Type-C and PD Charger Application
Application.
10.2 Typical Applications
10.2.1 Fully-Featured USB Type-C
The TPS65981 controls three separate power paths making it a flexible option for Type C PD charger
applications. In addition, the TPS65981 supports VCONN power for e-marked cables which are required for
applications which require greater than 3 A of current on VBUS.
of a Type-C and PD charger that is capable of supporting 5 V at 3 A, 9 V at 3 A, 12 V at 3 A (optional), 15 V at 3
A, and 20 V at 5 A. The 5-V , 9-V, 12-V and 15-V outputs are supported by the TPS65981 internal FETs and the
20-V output uses the external FET path controlled by the TPS65981 NFET drive. This Type-C PD charger uses
a receptacle for flexibility on cable choice.
Type-C
Receptacle
VBUS
CC1/2
USB2.0
SBU1/2
SSTX/RX
*12 Volt supply is optional
Copyright © 2021 Texas Instruments Incorporated
Note
®
and PD Charger Application
CSD87501L
VBUS
CC1/2
(Charger Application)
USB2.0
Figure 10-1. Type-C and PD Charger Application
Product Folder Links:
SLVSDC2C – FEBRUARY 2016 – REVISED AUGUST 2021
and a
USB Type-C and PD Dock or Monitor
Figure 10-1
shows the high level block diagram
PP_HV
TPS65981
PP_5V0
PP_CABLE
VIN_3V3
GPIOx
GPIOy
Copyright © 2016, Texas Instruments Incorporated
TPS65981
TPS65981
Supply 20 V, 5 A
Variable Supply
9 V, 3 A
*12 V, 3 A
15 V, 3 A
Supply 5 V, 3.5 A
Supply 3.3 V, 50 mA
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