Author Topic: Buck converter with pass transistor  (Read 644 times)

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Offline anishkgtTopic starter

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Buck converter with pass transistor
« on: May 24, 2020, 12:04:29 am »
Hey All,

First time here so i did not find an appropriate category for my Title.

I am trying charge a bank of capacitors BCAP0360 in a 3s2p configuration. The Buck converter U1 (AP3211) sets the output voltage at 8.1v and a bypass N-MOSFET Q1 (SQP60N06) to charge at a higher current.

Questions:
  • I am just not sure if i have Q1 connected the correct way to function as a bypass transistor for higher current about 50A (Max).
  • Is the inductor necessary here ? Would the inductor be able to handle the rated current ?
 

Offline TheHolyHorse

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Re: Buck converter with pass transistor
« Reply #1 on: May 26, 2020, 04:57:11 am »
The AP3211 has an internal switch, SW pin. Inductor, diode and output caps should be connected to that pin. I suggest you look at the example in the datasheet.
 


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