TPS40140RHHRG4 datasheet(15/68 Pages) TI1 | Dual or 2-Phase, Stackable Controller

Part No.	TPS40140RHHRG4

Description	Dual or 2-Phase, Stackable Controller

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TPS40140

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SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015

8.4 Device Functional Modes

8.4.1 Protection and Fault Modes

There are modes of normal operation during start-up and shutdown as well various fault modes that may be

detected. It is often necessary to know the state of the upper and lower MOSFETs in these modes. Table 1

shows a summary of these modes and the state of the MOSFETs. A description of each mode follows.

Table 1. Fault Mode Summary

MODE

UPPER MOSFET

LOWER MOSFET

Programmable UVLO_CEx = LOW

OFF

Power-on reset: fixed UVLO, BP5 < 4.25 V

OFF

Overcurrent

OFF, hiccup mode

Output undervoltage

OFF, hiccup mode

Output overvoltage

OFF

ON

CLKFLT, missing CLKIO at slave

OFF

PHSEL voltage > 4 V, or open to ground

OFF

Overtemperature

OFF

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