HV738中文资料Quad High Speed ±65V 750mA Ultrasound Pulser数据手册Microchip规格书

描述 Description

HV738 is a four-channel, monolithic, high voltage, high speed pulse generator. It is designed for portable medical ultrasound applications. This high voltage and high speed integrated circuit can also be used for piezoelectric, capacitive or MEMS sensing in ultrasonic nondestructive detection and sonar ranger applications.The HV738 consists of a controller logic interface circuit, level translators, MOSFET gate drivers and high power P-channel and N-channel MOSFETs as the output stage for each channel.The output stages of each channel are designed to provide peak output currents over ±1.1A for pulsing, when in mode 4, with up to ±65 volt swings. When in mode 1, all the output stages drop the peak current to ±140mA for low-voltage CW mode operation to decrease the power consumption of the IC. The P and N type of power FETs gate drivers are supplied by two floating 8.0VDC power supplies referenced to VPP and VNN. This direct coupling topology of the gate drivers not only eliminates two high voltage capacitors per channel, but also makes the PCB layout easier.

特性 Features

HVCMOS technology for high performance
High density integration ultrasound transmitter
0 to ±65V output voltage
±750mA source and sink current in Pulse mode
±110mA source and sink current in CW mode
Up to 20MHz operating frequency
Matched delay times
1.2 to 5.0V CMOS logic interface
Built-in output drain bleed resistors

简介

HV738属于集成电路（IC）的电源管理-专用。由Microchip制造生产的HV738电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。