TA84006F/FG

2006-3-6

10

<Example of 24 V support>

• Incorporate a Zener diode and make the external connections shown in the diagram below. Design the

device so that the voltage applied to the VM is clamped at 22 V below the maximum operating power

supply voltage.

• A capacitor is needed to control the effect of the counter-electromotive force.

Verification is particularly necessary when the motor current is large at startup or at shutdown (output

OFF).

20.9 V to 23.1 V

Due to the temperature characteristics (3.5

× 3 mV/°C),

the following applies at an ambient temperature of 85°C:

= 23.73 V

By taking the measures shown in the diagram on the right to bring

the voltage down to 22 V, the following becomes the case:

= 21.99 V

24 V

VM