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Datasheet

Datasheet

BM6201FS

TSZ02201-0828AB400010-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

26.MAR.2012 Rev.001

http://www.rohm.com

TSZ22111 · 15 · 001

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Functional descriptions

1) Control input pins (UH, UL, VH, VL, WH, WL)

The input threshold voltage of the control pins are 2.5V and 0.8V, with a hysteresis

voltage of approximately 0.4V. The IC will accept input voltages up to the VCC voltage.

When the same phase control pins are input high at the same time, the high side and low

side gate driver outputs low. However, it wishes measures as the dead time is installed in

the control signals. The control input pins are connected internally to pull-down resistors

(100kΩ nominal). However, when the switching noise on the output stage may affect the

input on these pins and cause undesired operation. In such cases, attaching an external

pull-down resistor (10kΩ recommended) between each control pin and ground, or

connecting each pin to an input voltage of 0.8V or less (preferably GND), is

recommended.

2) Under voltage lock out (UVLO) circuit

To secure the lowest power supply voltage necessary to operate the driver, and to prevent under voltage malfunctions,

the UVLO circuits are independently built into the upper side floating driver and the lower side driver. When the supply

circuit ends the lockout operation and returns the chip to normal operation. Even if the controller returns to normal

operation, the output begins from the following control input signal.

Fig.4 Low voltage monitor - UVLO - timing chart

Truth table

HIN

LIN

HO

LO

L

L

L

L

H

L

H

L

L

H

L

H

H

H

Inhibition

VCC

HIN

LIN

HO

LO

VB

HIN

LIN

HO

LO