National Semiconductor - LM5104 High Voltage Half-Bridge Gate Driver with Adaptive Delay
Summary
This robust gate driver is designed to efficiently control high-voltage half and full bridge power converters, driving both high and low side N-channel MOSFETs up to 118V DC. Featuring adaptively controlled transitions and programmable deadtime to prevent shoot-through, it ensures clean, reliable operation in applications such as synchronous buck regulators and active clamp converters. The manual provides comprehensive details on voltage ranges, signal timing, connection diagrams, and optimal performance for power electronics engineers designing high-speed, high-reliability DC-DC conversion systems.
Manual Details
| Brand | National |
|---|---|
| Pages | 12 |
| File Size | 375.28 KB |
| Published | July 16, 2026 |
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Frequently Asked Questions
What functionality is provided by the resistor connected between RT and ground?
This resistor programs the deadtime programmed interval between high side and low side gate transitions.
How does the device prevent shoot-through issues?
The state changes are controlled in an adaptive manner, preventing shoot-through issues for both high and low sides.
What is a recommended connection method for the LLP-10 package?
It is recommended that the exposed pad on the bottom of the LM5104/... be soldered to ground plane on the PC board.
Can this driver work with varying supply voltages?
Yes, it supports a bootstrap voltage range up to 118V DC and can work with supplies up to 100V.