PIP401 datasheet(5/16 Pages) PHILIPS

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Philips Semiconductors

PIP401

OR-ing Intelligent Switch

Product data

Rev. 03 — 5 November 2002

5 of 16

9397 750 10578

7.4 Overtemperature ﬂag

In the event of failure of the supply to VCC, the series power switch turns off and the

forward voltage drop increases from a few millivolts to approximately 0.7 V. The

power dissipation in the PIP401 increases causing the junction temperature to rise. A

temperature detection circuit with an open-collector output is provided, that can be

used to generate a warning signal for the power supply. The temperature ﬂag

operates at a typical junction temperature of 160

°C. A pull-up resistor of at least 1 kΩ

is required between TFL and VCC.

The temperature ﬂag is intended to operate under fault conditions. The PIP401

should not be run continuously at junction temperatures above 150

°C.

Fig 3.

Turn-off waveforms.

Input voltage (VI)

Output current (IO)

(5A/ division)

Bus voltage (VO)

03aj18

Timebase

(100ns/ division)

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