9/22

Datasheet

Datasheet

BD8271EFV

TSZ02201-0G1G0BK00250-1-2

© 2013 ROHM Co., Ltd. All rights reserved.

1.Oct.2013 Rev.002

www.rohm.com

TSZ22111・15・001

(3) If there’s no improvement with the condition (1) and (2), there are two improvement way.

The first way is to insert an LC filter in the power line or in the ground line. (Figure 8.)

Figure 8. Example of LC filter

(4) The second way is to add a capacitor of around 2200 pF between each output and the ground. In this case, ensure that

the GND wiring should not have any common impedance with other signals. (Figure 9.)

2200pF

PWM

OUTPUT-

PWM

OUTPUT+

Figure 9. Snubber Circuit

47µF

120µH

PWM

DRIVER

IC

VCC

GND

47µF

120µH

PWM

DRIVER

IC

GND

VCC

47µF

120µH

PWM

DRIVER

IC

GND

VCC

120µH

0.1µF

0.1µF

0.1µF