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MOSFET (Si/SiC) Forum Discussions

The_BOOM
Level 2
First like received 5 likes given 5 sign-ins
Level 2
Can a half-bridge configuration, such as the following, be an efficient solution for the following requirement?

Requirement:
- Galvanic isolation between input and output
- Input: 12-24V DC
- Output: 5V DC @ 2A

What about SR losses? According to Infineon's chart, below, SR losses would exceed diode losses at our desired output. Is there a way to mitigate that, or an alternate topology?

From Infineon Video
https://youtu.be/LyhsaTeN-oQ?t=198

4709.attach

4710.attach
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1 Solution
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator
Hi,

As per the required power specification, a Flyback topology is well preferred. It has less component count compared to half bridge and it is easy to control.

Please find the attached image with different DC-DC topologies, their specifications and its applications.

4862.attach

Please revert back if you need any help in selecting the right switch and the package.

Regards,
Abhilash P

View solution in original post

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1 Reply
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator
Hi,

As per the required power specification, a Flyback topology is well preferred. It has less component count compared to half bridge and it is easy to control.

Please find the attached image with different DC-DC topologies, their specifications and its applications.

4862.attach

Please revert back if you need any help in selecting the right switch and the package.

Regards,
Abhilash P
0 Likes