MIC5021中文資料High Side MOSFET Gate Driver with Current Limit and Charge Pump數(shù)據(jù)手冊Microchip規(guī)格書

描述 Description

The MIC5021 high-side MOSFET gate driver is designed to operate at frequencies up to 100 kHz (5 kHz PWM for 2% to 100% duty cycle) and is an ideal choice for high speed applications such as motor control, SMPS (switch mode power supplies), and applications using IGBTs. The MIC5021 can also operate as a circuit breaker with or without automatic retry.A rising or falling edge on the input results in a current source pulse or sink pulse on the gate output. This output current pulse can turn on a 2,000 pF MOSFET in approximately 550 ns. The MIC5021 then supplies a limited current (< 2 mA), if necessary, to maintain the output state.An overcurrent comparator with a trip voltage of 50 mV makes the MIC5021 ideal for use with a current sensing MOSFET. An external low value resistor may be used instead of a sensing MOSFET for more precise overcurrent control. An optional external capacitor placed from the CT pin to ground may be used to control the current shutdown duty cycle (dead time) from 20% to <1%. A duty cycle from 20% to about 75% is possible with an optional pull-up resistor from CT to VDD.The MIC5021 is available in 8-pin SOIC and plastic DIP packages. Other members of the MIC502x family include the MIC5020 low-side driver and the MIC5022 half-bridge driver with a cross-conduction interlock.

特性 Features

12 V to 36 V operation
550 ns rise/fall time driving 2,000 pF
TTL compatible input with internal pull-down resistor
Overcurrent limit
Gate to source protection
Internal charge pump
100 kHz operation guaranteed over full temperature and operating voltage range
Compatible with current sensing MOSFETs
Current source drive reduces EMI

簡介

MIC5021屬于集成電路（IC）的柵極驅(qū)動器。由Microchip制造生產(chǎn)的MIC5021柵極驅(qū)動器柵極驅(qū)動器電源管理集成電路 (PMIC) 可用于提供隔離、放大、參考位移、自舉或其他必要功能，這些功能可將來自電源轉(zhuǎn)換應用中控制設(shè)備的信號連接到電源被控制通過的半導體設(shè)備（通常為 FET 或 IGBT）。任何特定設(shè)備提供的確切功能各不相同，但與它適合驅(qū)動的半導體配置相關(guān)。