PG

PG-delay

Figure 8-3. Power Good Transient and De-glitch Behavior

The PG Indicator is by default pulled low during DVS transition of the output voltage without any blanking or

active as shown in Figure 8-3.

8.3.10 Switch Current Limit / Short Circuit Protection

The TPS6286x integrates a current limit on the high-side and low-side MOSFETs to protect the device against

overload or short circuit conditions. The current in the switches is monitored cycle by cycle. If the high-side

MOSFET current limit, ILIMF, trips, the high-side MOSFET is turned off and the low-side MOSFET is turned on

to ramp down the inductor current. Once the inductor current through the low-side switch decreases below the

low-side MOSFET current limit, ILIMF, the low-side MOSFET is turned off and the high-side MOSFET turns on

again.

8.3.11 Thermal Shutdown

thermal shutdown temperature TSD of 160°C (typ), the device enters thermal shutdown. Both the high-side and

converter resumes operation, beginning with a soft start to the originally set VOUT. The thermal shutdown is not

active in Power Save Mode.

8.3.12 Output Voltage Discharge

The purpose of the output discharge function is to ensure a defined down-ramp of the output voltage when the

device is disabled and to keep the output voltage close to 0 V. The output discharge feature is only active once

the device has been enabled at least once since the supply voltage was applied. The output discharge function

is not active if the device is disabled and the supply voltage is applied the first time. The internal discharge

resistor is connected to the VOS pin. The discharge function is enabled as soon as the device is disabled. The

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TPS62860, TPS62861

SLUSDU8B – APRIL 2020 – REVISED SEPTEMBER 2020

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