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Drive Signal and Interface Power Management
How does SiLM94112 configure PWM output?

1. Select the appropriate PWM channel for the half bridge output (HB-MODE.CTRL)

2. Select the appropriate duty cycle (PWP_DC_CTRL)

3. Turn on the PWM working mode of half bridge output (fw_ctrl), and the A3 board will not need to write this register in the future. The default value is 00

4. Choose a suitable working frequency for PWM (80Hz-2kHz, PWP_Ch-Freq.Ctr, ovp2_2k_ctrl)

5. Enable corresponding channel (HB_ACT_CTRL)

In SLMi334, can the VCLAMP pin be connected to the VEE when the clamp function is not used?

When the clamp function is not used, it is recommended to connect the VCLAMP pin to the driver output pin VOUT. If VCLAMP is connected to VEE, SLMi334 will lose its soft shutdown function when de saturation protection occurs.


Are there any precautions for testing the power supply current of digital isolators at high frequencies?

It is necessary to pay attention to the parasitic parameters of the PCBA itself used. The working current of the power supply is greatly affected by the parasitic parameters at high frequencies, and we cannot only care about the external capacitance parameters. We need to evaluate the equivalent capacitance value of the PCBA board, which determines the size of the working current of the power supply at high frequencies


Can DIS in SLMi8233 be suspended?

Disturbance to DIS can cause abnormal output. It is recommended that DIS be connected to GND1

Upper12