H Bridge Amplifier

In this blog, I will be selecting an MOSFET n and p channel H Bridge. I selected this because of the simplicity of the end design.

First I go to Digikey, go to the product index and select in stock items. Next I go to Discrete Semiconductor Products and select FETs arrays. Under FET type, I select 2 N and 2 P-Channel H-Bridge. I need a device rated for 2 Amps. The device rated for 3.98A is $1.14. One rated for 2.7A is $1.93. A few rated for a lower amperage are even higher. The choice is clear, if I pick the ZXMHC3F381N8TC, the MOSFET Complementary H-Bridge, 30V, 8-SOIC. The best part is the switching speeds. The turn on delay time is 2.5 ns. The turn off delay time is 11.5 ns. This is much faster than both of the preamplifiers.

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Electrical Design Engineer, Minneapolis, Minnesota