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ADI Launches High-Speed High-Side MOSFET Capable of Short Switching Times

Google 우선 소스Published2017.07.14 10:23
Ideal for switching and contactless switch applications

Analog Devices announced the release of the new LTC7003 high-speed high-side N-channel MOSFET driver, which operates up to a supply voltage of 60V.

The internal charge pump of this product perfectly drives an external N-channel MOSFET switch to keep it always ON. The 1Ω gate driver can easily drive MOSFETs with large gate capacitance within very short switching times and a propagation delay of 35ns, making it ideal for both high-frequency switching and static switch applications.

The LTC7003 detects an overcurrent condition by monitoring the voltage across an external sense resistor connected in series with an external MOSFET switch. When the LTC7003 detects that the switch current exceeds a set level, a fault flag is activated, and the switch is turned off for a time set by an external timing capacitor. After the preset time has elapsed, it automatically attempts to reset.

The LTC7003 receives a ground-referenced low-voltage digital input signal to rapidly drive a high-side N-channel power MOSFET, with the MOSFET's drain voltage allowed up to 60V relative to GND. With very fast rise and fall speeds of 13ns, switching losses can be minimized when driving a 1,000pF load. It supports features such as adjustable current limiting, current monitoring output, adjustable overvoltage lockout, and enable input.
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