PPHV

PP5V

IREF

EN1

EN0

VBUS

GND

VLDO

FLT

TPS66021

GPIO1

GPIO2

VCON_IN

PD

Controller

GPIO3

4S2P

VSYS

5V Buck

Battery

Charger

OVP

VIN

VMON

CC1

CC2

Opt.

EN

from EC

VIN

VBAT

2

2

2

2

2

SBU1/2

RX1

TX1

RX2

TX2

D+/-

2

D+/-

2

CC2

CC1

GND

VBUS

Type-C

Receptacle

5V_IN

TVS2200

IN

GND

Opt.

Opt.

29

TPS66020, TPS66021

www.ti.com

SLVSEW8 – AUGUST 2019

Product Folder Links: TPS66020 TPS66021

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Copyright © 2019, Texas Instruments Incorporated

9 Application and Implementation

NOTE

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. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The typical applications of the TPS6602x include chargers, notebooks, tablets, ultra-books, dongles and any

other product supporting USB Type-C and/or USB-PD as a power source or power sink. The typical applications

outlined in the following sections detail a Fully-Featured USB Type-C using a single 5-V supply and another

using a separate 3.3-V supply.

9.2 Typical Application

Figure 19 shows a USB Type-C single port design using a Power Delivery (PD) controller that supports 5-V

operation. For this system, a single 5-V supply is used to supply power to the PP5V and VIN supplies of the

TPS66021, as well as, the connector power, VCONN. The TPS66021 supplies power to the 5-V supply of the PD

controller via its VLDO output which is sourced either from the integrated 5-V VBUS LDO for dead battery

operation or from VIN once the dead battery condition ends.

Similarly, Figure 20 shows a USB Type-C single port design using a PD controller that only supports 3.3-V

operation. In this case, a separate 3.3-V supply in the system is used to supply power to the TPS66020. The

TPS66020 supplies power to the 3.3-V supply of the PD controller via its VLDO output which is sourced either

from the integrated 3.3-V VBUS LDO for dead battery operation or from VIN once the dead battery condition

ends.

The PP5V integrated power path is used to provide 5-V VBUS power when the device is enabled as Source. The

PPHV integrated power path provides power to the system and battery charger from VBUS when the device is

enabled as a Sink.

Figure 19. Single Port Type-C PD Port Using a Single 5-V Supply.