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TPS66020, TPS66021

SLVSEW8 – AUGUST 2019

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Device Functional Modes (continued)

–

(EN1 = 0) and (EN0 = 1)

•

SRC FAULT state if:

–

PP5V UVLO, PP5V OVP, or PP5V RCP event detected -or-

–

PP5V current limit and PP5V TSD events detected

8.7.1.1.3

SRC 3-A State

In the SRC 3-A state, EN1 = 1, EN0 = 1. While in the SRC 3-A state:

•

•

PP5V overvoltage, overtemperature and reverse current protections are enabled

•

PPHV power path is disabled

•

PPHV overtemperature, reverse-current, and VBUS overvoltage protections are disabled.

•

VIN and PP5V undervoltage lockout are enabled.

The following transitions are possible from the SRC 3-A state:

•

SRC 1.5-A state if (EN1 = 1) and (EN0 = 0)

•

DISABLED state if:

–

(EN1 = 0) and (EN0 = 0) -or-

–

(EN1 = 0) and (EN0 = 1)

•

SRC FAULT state if:

–

PP5V UVLO, PP5V OVP, or PP5V RCP event detected -or-

–

PP5V current limit and PP5V TSD events detected

8.7.1.1.4

SNK State

In the SNK state, EN1 = 0, EN0 = 1. While in the SNK state:

•

PP5V power path is disabled

•

PP5V overvoltage, overtemperature and reverse current protections are disabled

•

PPHV power path is enabled

•

PPHV overtemperature, VBUS overvoltage (if OVP terminal not grounded) and reverse-current protections

are enabled

•

VIN and VBUS undervoltage lockout are enabled

The following transitions are possible from the SNK state:

•

FRS (Fast Role Swap) state

•

DISABLED state if:

–

(EN1 = 0) and (EN0 = 0)

•

SNK FAULT state if:

–

VBUS OVP (if OVP terminal not grounded) event detected -or-

–

PPHV TSD event detected

8.7.1.1.5

FRS (Fast Role Swap) State

In the FRS state, EN1 = 1, EN0 = 1. The FRS state is a transitional state, that transitions automatically from the

SNK state to the SRC 3-A state upon successful completion of the fast role swap sequence:

•

PPHV power path is automatically disabled

•

PPHV overtemperature, VBUS overvoltage (if OVP terminal not grounded) protections are disabled

•

VIN and PP5V undervoltage lockout are enabled

•

PP5V power path is automatically enabled along with its overvoltage, overtemperature and RCP protection

circuits upon successfully completing the fast role swap sequence.

The following transitions are possible from the FRS state:

•

SRC 3-A state. This transition is automatic upon successful completion of the fast role swap sequence.

•

DISABLED state if: