Analog Integrated Circuit Device Data

Freescale Semiconductor

9

17533

TYPICAL APPLICATIONS

INTRODUCTION

TYPICAL APPLICATIONS

INTRODUCTION

Figure 6 shows a typical application for the 17533. When

applying the gate voltage to the VG pin from an external

source, be sure to connect it via a resistor equal to, or greater

Care must be taken to provide sufficient gate-source

of the high-side MOSFET channels.

Figure 6. 17533 Typical Application Diagram

CEMF SNUBBING TECHNIQUES

Care must be taken to protect the IC from potentially

damaging CEMF spikes induced when commuting currents

in inductive loads. Typical practice is to provide snubbing of

voltage transients by placing a zener or a capacitor at the

supply pin (VM) (see Figure 7).

Figure 7. CEMF Snubbing Techniques

PCB LAYOUT

When designing the printed circuit board (PCB), connect

sufficient capacitance between power supply and ground

pins to ensure proper filtering from transients. For all high-

current paths, use wide copper traces and shortest possible

distances.

MCU

17533

5.0 V

GND

VG

IN1B

IN2A

IN2B

OE

VM

VDD

OUT1B

OUT2B

0.01

µF

OUT1A

IN1A

OUT2A

17533

5.0 V

5.0 V

GND

VM

VDD

OUT

OUT

OUT

OUT

17533

5.0 V

5.0 V

GND

VM

VDD

OUT

OUT

OUT

OUT