All Questions
4
questions
1
vote
1
answer
35
views
Why does this multi-phase buck controller have one phase to be driven by external driver?
https://www.renesas.com/in/en/document/dst/isl62883-isl62883b-datasheet
"The ISL62883 uses two integrated gate drivers and an external gate driver to provide a complete solution"
Why would ...
- 3,032
4
votes
6
answers
2k
views
Buck converter MOSFET (IRF4905) heating up
I tried to build a buck converter without any ICs, just transistors, a diode and passive components. Its purpose is to convert 12V to 5V at 2 Amps. It works, but the switching MOSFET (IRF4905) heats ...
- 81
0
votes
1
answer
787
views
Is isolation required for MOSFET gate driver's and microprocessor's power supply?
I have designed a 62 W, 24 V to 5 V buck converter operating at 250 kHz.
I am using TI's UCC27200A gate driver and Infineon's Optimos 4.
The problem is that the driver doesn't have any kind of ...
1
vote
2
answers
857
views
Design/Build SMPS- PMOS or NMOS
I'm trying to design and build a simple ac/dc smps that outputs 5v dc and capable of 2 amps. I currently have it mostly designed using a nmos but the problem I'm running into now is how to get a pwm ...
- 69