FZL4146 查看數據表（PDF） - Infineon Technologies

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FZL4146

Quad Driver Incl. Short-Circuit Signaling

Infineon Technologies 

Quad Driver Incl. Short-Circuit Signaling

Bipolar IC

Features

q Short-circuit signaling

q Four driver circuits for driving power transistors

q Turn-ON threshold setting from 1.5 to 7 V

FZL 4146

P-DSO-20-7

Type

FZL 4146 G

Ordering Code

Q67000-H8743

Package

P-DSO-20-7 (SMD)

General Description

The IC comprises four driver circuits capable of driving power transistors (PNP or

PMOS). The output transistors are protected against short-circuit to ground and supply

voltage. The turn-ON threshold can be set from 1.5 V to 7 V. Overload at one or several

outputs will be indicated at pin SQ (signaling output). The corresponding power

transistors are then protected by changeover to clock-governed operation.

Circuit Description

Each driver circuit has one active high driver input Dl and a common enable input ENA

(active high) is provided for all stages. The Q output is designed to drive the output

transistors. The load current is sampled and, if necessary, limited via pin W. If the load

current exceeds the preset value, the output stage switches off. Switching-ON again is

provided by the built-in clock generator T. Its operation requires an external capacitor Ce

at pin CE. If Ce is bridged by a break-key, switching-ON can only be carried out by

operating this key. The duty cycle of the clock generator is 1:47 (e.g. 45 µs/2.1 ms with

Ce = 10 nF). The clock generator is privileged versus the current sensor shut down.

When the supply is connected, the internal RS-FF goes into the state corresponding to

the released output.

Semiconductor Group

1

03.96

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