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Gate Driver ICs Forum Discussions

shpa_2240421
Level 1
Level 1
Hi,
Can you please advise if there is a drop-in alternative from Infineon to Microchip TC4428A?
IRS4428S is not suitable:
The propagation delay is 50ns typ and 95ns max (compared with 30ns typ and 35ns max).
Customer is using 1 driver per power MOSFET in a full bridge application and the deadtime between high-side and low-side power MOSFET can be as low as 30ns. This implies propagation delay variation between two drivers could result in longer than expected dead time (reduced efficiency) or in the other direction shoot through (both high-side and low-side MOSFETs on at the same time). Said another way they are not worried about the 50ns delay time but the variation of this number between parts (variation needs to be much less than 30ns).

There doesn't appear to be a drop-in from the newer Infineon parts.
Trying to use either the 2EDN7523 or 2EDN7524 and make use of the Enable pin to create an inv / non-inv part looks like it will require PCB changes, and the customer uses the TC4428A on multiple projects.

Would be good to hear if you know of any way to implement this without PCB changes.

Thanks,
Sharmalee
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1 Solution
Abhilash_P
Moderator
Moderator 25 likes received 250 replies posted 250 sign-ins
Moderator
Hi,

As per the datasheet of the 2EDN7523/524, the ENA and ENB pins can be enabled by keeping it open. Hence as per the pin configurations, the pin 1 of TC4428A can be overlapped with ENA and similarly with ENB.

The possible replacements for TC4428A can be the following,

2EDN7523
2EDN7524
2EDN852X
2EDN7424

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 datasheet of the 2EDN7523/524, the ENA and ENB pins can be enabled by keeping it open. Hence as per the pin configurations, the pin 1 of TC4428A can be overlapped with ENA and similarly with ENB.

The possible replacements for TC4428A can be the following,

2EDN7523
2EDN7524
2EDN852X
2EDN7424

Regards,
Abhilash P
0 Likes