MD1820中文资料High Speed, 4-Channel MOSFET Driver w/Non-Inverting Outputs数据手册Microchip规格书

描述 Description

MD1820 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel MOSFETs for medical ultrasound applications and other applications requiring a high output current for a capacitive load. The high-speed input stage of the MD1820 can operate from a 1.8 to 5.0V logic interface with an optimum operating input signal range of 1.8 to 3.3V. An adaptive threshold circuit is used to set the level translator switch threshold to the average of the input logic 0 and logic 1 levels. The input logic levels may be ground-referenced, even though the driver is putting out bipolar signals. The level translator uses a proprietary circuit, which provides DC coupling together with high-speed operation.The output stage of the MD1820 has separate power connections enabling the output signal L and H levels to be chosen independently from the supply voltages used for the majority of the circuit. As an example, the input logic levels may be 0 and 1.8V, the control logic may be powered by +5.0 and -5.0V, and the output L and H levels may be varied anywhere over the range of -5.0 to +5.0V. The output stage is capable of peak currents of up to ±2.0A, depending on the supply voltages used and load capacitance present. The PE pin serves a dual purpose. First, its logic H level is used to compute the threshold voltage level for the channel input level translators. Second, when PE is low, the outputs are HiZ. This assists in properly precharging the AC coupling capacitors that may be used in series in the gate drive circuit of an external PMOS and NMOS transistor pair.

特性 Features

Non-inverting, four channel MOSFET driver
6.0ns rise and fall time
2.0A peak output source/sink current
1.8 to 5.0V input CMOS compatible
5.0 to 10V total supply voltage
Smart logic threshold
Low jitter design
Four matched channels
Drives two P- and two N-channel MOSFETs
Outputs can swing below ground
Low inductance quad flat no-lead package
High performance, thermally-enhanced package

简介

MD1820属于集成电路（IC）的栅极驱动器。由Microchip制造生产的MD1820栅极驱动器栅极驱动器电源管理集成电路 (PMIC) 可用于提供隔离、放大、参考位移、自举或其他必要功能，这些功能可将来自电源转换应用中控制设备的信号连接到电源被控制通过的半导体设备（通常为 FET 或 IGBT）。任何特定设备提供的确切功能各不相同，但与它适合驱动的半导体配置相关。