STHV748数据手册集成电路（IC）的电源管理-专用规格书PDF

描述 Description

This monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound imaging applications, but it can also be used for driving other piezoelectric, capacitive or MEMS based transducers. The STHV748 comprises a controller logic interface circuit, level translators, MOSFET gate drivers, noise blocking diodes, and high-power P-channel and N-channel MOSFETs as the output stage for each channel, clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor, and a T/R switch which guarantees an effective decoupling during the transmission phase. Moreover, the STHV748 includes self-biasing and thermal shutdown blocks. Each channel can support up to five active output levels with two half bridges. The output stage of each channel is able to provide ±2 A peak output current. In order to reduce power dissipation during continuous wave mode, a dedicated half bridge is available and the peak current is limited to 0.6 A.

特性 Features

0 to ±90 V output voltage
Up to 20 MHz operating frequency
Embedded low-power, floating high-voltage drivers (external voltage rails can be also used)
Mode operations:3/5-levels output waveform
±2 A source and sink current
Down ≤ 20 ps jitter
Anti-cross conduction function
Low 2nd harmonic distortion

Fully integrated clamping-to-ground function8 Ω synchronous active clamp
Anti-leakage on output node

Dedicated half bridge for continuous wave (CW) operations≤ 0.1 W power consumption
±0.6 A source and sink current
205 fs RMS jitter [100 Hz-20 kHz]

Fully integrated T/R switch13.5 Ω on resistance
HV MOS topology to minimize current consumption
Up to 300 MHz BW
Receiver multiplexing function

2.4 V to 3.6 V CMOS logic interface
Auxiliary integrated circuitsNoise blocking diodes
Fully self-biasing architecture
Anti-memory effect for all internal HV nodes
Thermal protection
Standby function

Latch-up free due to HV SOI technology
Very few external passive components needed

简介

STHV748属于集成电路（IC）的电源管理-专用。由制造生产的STHV748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。