TPS4HC120-Q1中文资料具有低功耗模式的汽车级四通道 120mΩ 智能高侧开关数据手册TI规格书

描述 Description

TPS4HC120-Q1 is an automotive quad-channel, smart high-side switch, with integrated NMOS power FET and charge pump, designed to meet the requirements of 12V automotive battery systems. The low RON (120mΩ) minimizes the device power dissipation when driving a wide range of output load current up to 2A when all four channels are enabled or 2.5A when only one channel is enabled.

The device integrates protection features such as thermal shutdown, output clamp, and current limit. These features improve system robustness during fault events such as short circuit. TPS4HC120-Q1 implements a selectable current limiting circuit that improves the reliability of the system by reducing inrush current when driving large capacitive loads and minimizing overload current. The device offers 10 selectable current limit settings (0.25A to 5A) based on the external resistor used on the ILIM pin. The device also provides an accurate load current sense that allows for improved load diagnostics such as overload and open-load detection, which enables better predictive maintenance.

TPS4HC120-Q1 is available in a 28-pin, 4.9mm × 7.1mm HVSSOP leaded package with 0.5mm pin pitch minimizing the PCB footprint.

特性 Features

Quad-channel 120mΩ automotive smart high-side switch with full diagnostics

Open-drain status output

Current sense analog output



Wide operating voltage 3V to 28V

Low power mode (LPM) with automatic entry and exit

IQ,LPM < 20µA/ch with all 4 channels ON and in LPM mode



Ultra-low sleep current, <1µA at 25°C

Selectable current limit, 0.25A to 5A

Protection

Overload and short-circuit protection

Thermal shutdown and swing with self recovery

Inductive load negative voltage clamp

Loss-of-GND, loss-of-battery, and reverse battery protection



Diagnostics

Global fault report for fast interrupt

Overcurrent and short-to-ground detection

Open-load and short-to-battery detection



Qualified for automotive applications

AEC-Q100 qualified with the following results:

Device temperature grade 1: –40°C to 125°C ambient operating temperature range



Electrical transient disturbance immunity certification of ISO7637-2 and ISO16750-2



28-pin thermally-enhanced HVSSOP package