17550 Просмотр технического описания (PDF) - Motorola => Freescale

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17550

Quad H-Bridge Micromotor Driver with DC/DC Boost Converter

Motorola => Freescale 

CEMF Snubbing Techniques

Care must be taken to protect the IC from potentially

damaging CEMF spikes induced when commutating currents

in inductive loads. Typical practice is to provide snubbing of

voltage transients by placing a capacitor or zener at the motor

supply voltage terminal (VM) (see Figure 5).

5.0 V

5.0 V

175XX

VDD

VM

C1L

C1H

C2L

C2H

OUT

CRES

OUT

GND

5.0 V 5.0 V

175XX

VDD

VM

C1L

C1H

C2L

C2H

OUT

CRES

OUT

GND

Figure 5. CEMF Snubbing Techniques

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

17550

11

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