IR2175S 查看數據表（PDF） - International Rectifier

零件编号

产品描述 (功能)

比赛名单

IR2175S

LINEAR CURRENT SENSING IC

International Rectifier 

IR2175(S)

Timing Waveforms

PO

Duty=91%

Duty=9%

Vin+= -260mV

Vs = 0V

PO

Vin+= +260mV

Vs = 0V

Carrier Frequency =

130kHz

Figure 1 Output waveform

Application Hint:

Temperature drift of the output carrier frequency can be cancelled by measuring both a PWM period and the on-time

of PWM (Duty) at the same time. Since both periods vary in the same direction, computing the ratio between these

values at each PWM period gives consistent measurement of the current feedback over the temperature drift.

4

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