MPC17511AEV Ver la hoja de datos (PDF) - Freescale Semiconductor

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Fabricante

MPC17511AEV

1.0 A 6.8 V H-Bridge Motor Driver IC

Freescale Semiconductor 

TYPICAL APPLICATIONS

FUNCTIONAL PIN DESCRIPTION

TYPICAL APPLICATIONS

Figure 7 shows a typical application for the 17511A. When

applying the gate voltage to the CRES pin from an external

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

than, RG = VCRES / 0.02Ω.

5.0 V

VCRES < 14 V

NC

NC

RG > VCRES/0.02 Ω

NC

NC

RG

0.01 μF

17511A

VDD VM

C1L

C1H

C2L

C2H

CRES

GOUT

OUT1

MCU

EN

GIN

IN1

OUT2

IN2

GND

Motor

Solenoid

NC = No Connect

Figure 7. 17511A Typical Application Diagram

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 via placing a capacitor or zener at the

supply pin (VM) (see Figure 8).

5.0 V 5.0 V

17511A

VDD VM

C1L

C1H OUT1

C2L

C2H

CRES

OUT2

GND

5.0 V 5.0 V

17511A

VDD VM

C1L

C1H OUT1

C2L

C2H

CRES

OUT2

GND

Figure 8. CEMF Snubbing Techniques

Analog Integrated Circuit Device Data

Freescale Semiconductor

17511A

11

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