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How about the capacitors in series for high voltage application? I need some high voltage cap, but these is no device from the model. So I would use the capacitors
in series. But I cannot sure the reliability for the method.
I have found when Duty cycle is large with high load current and low line voltage. The duty cycle of inductor current waveform will be different. When output voltage is set smaller, the waveform is normal. I cannot explain it. I have ever think the slope compensation is not enough. But if the...
It is a boost PWM dcdc. When Vin<3V, F=500KHz, Iload>300mA, the duty cycle will change to be different. The switch device ON time is 60% in a cycle, and the another cycle ON time is more than 85%. But Vin increase, or Iload is small, or F is high. The waveform is standard. What happen is in the...
the ESD diode
One clamp diode can use for the open drain structure pin. And the ESD current path of this pin to VDD is first from pin to vss, then from vss to vdd.
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