VN5770AKPTR-E STMicroelectronics, VN5770AKPTR-E Datasheet - Page 21

• Manufacturer Part Number: VN5770AKPTR-E
• Description: Power Switch ICs - Power Distribution Quad Smart Power 280mOhm 8.5A 36VCC
• Manufacturer: STMicroelectronics

Specifications of VN5770AKPTR-E

• Product Category: Power Switch ICs - Power Distribution
• Rohs: yes

VN5770AKP-E
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Note:
Application information
Figure 33. Typical application schematic
Mostly motor bridge drivers use a reverse battery protection diode (D) inside supply rail.
This diode prevents a reverse current flow back to Vbatt in case the bridge gets disabled via
the logic inputs while motor inductance still carries energy. In order to prevent a hazardous
overvoltage at circuit supply terminal (Vcc), a blocking capacitor (C) is needed to limit the
voltage overshoot. As basic orientation, 50µF per 1A load current in recommended. In
alternative, also a Zener protection (Z) is suitable. Even if a reverse polarity diode is not
present, it is recommended to use a capacitor or zener at Vcc because a similar problem
appears in case supply terminal of the module has intermittent electrical contact to the
battery or gets disconnected while motor is operating.
Doc ID 17772 Rev. 4
Application information
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