Electrical specifications

VNH5019A-E

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Doc ID 15701 Rev 9

Figure 5.

Typical application circuit for DC to 20 kHz PWM operation with reverse battery

protection (option B)

Note:

device. This pin must be externally pulled high.

M

μC

Reg 5V

+ 5V

CS

PWM

D

S

G

3.3K

1K

1K

1K

10K

33nF

1.5K

100K

CP

+5V

1K

3.3K

1K

C

Note:

The value of the blocking capacitor (C) depends on the application conditions and defines voltage and current ripple onto supply line at PWM

operation. Stored energy of the motor inductance may flyback into the blocking capacitor, if the bridge driver goes into 3-state. This causes a

hazardous overvoltage if the capacitor is not big enough. As basic orientation, 500 µF per 10 A load current is recommended.

Table 13.

1

1

0

1

OPEN

H

High

impedance

0L

0

1H

0L

High

impedance

X

X

0

OPEN

Fault Information

Protection Action