BTN8962 datasheet(43/94 Pages) INFINEON

部品番号	BTN8962

部品情報	High Current PN Half Bridge

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PWM DC < 100% for

several PWM cycles . Still

constant / same current

value?

Corresponding load

current plausible ?

Measured IS value in

fault current range ?

Fault detected

no

yes

No Fault

yes

no

yes

Current value constant

over time / several

samples?

no

Figure 37 Possible fault condition validation process flow

4.5.2.3

Lowpass filtered current sense signal

The procedure from Figure 37 can be implemented with the sense current IIS being measured by a phase

current measurement, as described in Chapter 5.5.2, or by a being lowpass filtered. A lowpass filter, as shown in

Figure 38, allows to perform an uncoupled ADC measurement from the PWM generation.

BTN8960 /62 /80 /82

High Current PN Half Bridge

Current Sense Improvement

Application Note

43

Rev. 0.6

2017-02-21

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