LM5101B

2A 高电压高侧和低侧闸极驱动器

The LM5100A/B/C and LM5101A/B/C high-voltage gate drivers are designed to drive both the high-side and the low-side N-Channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of operating with supply voltages up to 100 V. The A versions provide a full 3-A of gate drive, while the B and C versions provide 2 A and 1 A, respectively. The outputs are independently controlled with CMOS input thresholds LM5100A/B/C or TTL input thresholds LM5101A/B/C.

An integrated high-voltage diode is provided to charge the high-side gate drive bootstrap capacitor. A robust level shifter operates at high speed while consuming low power and providing clean level transitions from the control logic to the high-side gate driver. Undervoltage lockout is provided on both the low-side and the high-side power rails. These devices are available in the standard SOIC-8 pin, SO PowerPAD-8 pin, and the WSON-10 pin packages. The LM5100C and LM5101C are also available in MSOP-PowerPAD-8 package. The LM5101A is also available in WSON-8 pin package.

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Drives Both a High-Side and Low-Side N-Channel

MOSFETs

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Independent High- and Low-Driver Logic Inputs

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Bootstrap Supply Voltage up to 118 V DC

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Fast Propagation Times 25-ns Typical

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Drives 1000-pF Load With 8-ns Rise and Fall

Times

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Excellent Propagation Delay Matching 3-ns

Typical

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Supply Rail Undervoltage Lockout

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Low Power Consumption

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Pin Compatible With HIP2100/HIP2101