Q67000-H8437 Ver la hoja de datos (PDF) - Infineon Technologies

Número de pieza

componentes Descripción

Fabricante

Q67000-H8437

Quad Driver Incl. Short-Circuit Signaling

Infineon Technologies 

FZL 4145 D

Typical Application Circuits

The load conditions at Q depend on the permissible power dissipation of the used power

transistors. The pulsed power dissipation in case of a short circuit must be observed.

In order to suppress oscillations of the power stage in case of a short circuit, a capacitor

C at Q1 to Q4 is necessary if e.g. fast switching transistors are used.

Typical value X of C: approx. 20 nF.

The output circuit 1 is suited for currents up to approx. IQ = 100 mA.

The output circuit 2 and 3 are suited for currents up to approx. IQ = 2 A. A minimum

power dissipation can be achieved with circuit 3.

A break key in parallel to CT allows a manual switch-on in case of short-circuit.

RP = Precision resistor (current measurement)

CT = 0.8 x tp (nF, µs)

tp = Short-circuit current pulse length

Note: Circuit 1 does not permit a capacitor between Q1 and Q4 and the collector.

Circuit 2 does not permit a capacitor between Q1 and Q4 and base or emitter,

respectively.

Otherwise too high current spikes would arise in case of a short circuit.

Semiconductor Group

9

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