MC33883

The MC33883 is a full bridge pre-driver including integrated charge pump, two independent high and low side driver channels.

The drive outputs of MC33883 are capable to source and sink 1 A pulse peak current. The low side channel is referenced to ground, the high side channel is floating above ground.

A linear regulator of MC33883 provides a maximum of 16.5V to supply the low side gate driver stages. The high side driver stages are supplied with a 10V_typical charge pump voltage. Such built-in feature, associated to external capacitor provides a full floating high side drive.

An under- and over-voltage protection prevents erratic system operation at abnormal supply voltages. Under fault, these functions of MC33883 force the driver stages into off state. The logic inputs are compatible with standard CMOS or LSTTL outputs. The input hysteresis makes the output switching time independent of the input transition time.

The global enable logic signal can be used to disable the charge pump and all the bias circuit. The net advantage of MC33883 is the reduction of the quiescent supply current to under 10µA. To wake up the circuit, 5 V has to be provided at G_EN.