Datasheet

Datasheet

26/34

BD9271KUT

TSZ02201-0F1F0C100260-1-2

27.Feb.2015 Rev.004

www.rohm.com

TSZ22111・15・001

・RESISTOR SHORT protection

・MOSFET SHORT protection

When PWMx=HIGH, if the voltage of Source pin becomes lower than 0.15V(typ), ERR_DET = LOW is outputted and RES

SHORT error will be detected, and this error state is realeased when the voltage of Sourse pin comes back to 0.15V(typ) or

higher. The initial value of the detect threshold of RESSHORT and MOSSHORT are 0.15V. And those correspond to the

When PWMx=LOW, if the voltage of Source pin becomes higher than 0.15V(typ), ERR_DET = LOW is outputted and RES

SHORT error will be detected, and this error state is realeased when the voltage of Sourse pin comes back to 0.15V(typ) or

lower.

① When PWMx=LOW, If Source pin becomes 0.15V(typ) or more, MOS SHORT error is detected.

ERR_DET=LOW is outputted.

② If source pin voltage is release condition, ERR_DET=HIGH is outputted.

③ When PWMx=HIGH, If Source pin becomes 0.15V(typ) or lower, RES SHORT error is detected.

ERR_DET=LOW is outputted.

④ If source pin voltage is release condition, ERR_DET=HIGH is outputted.

Figure 25. RESISTER SHORT Protection and MOSFET SHORT Protection

(internal)