TPS482H85-Q1中文资料汽车级 48V、85mΩ 双通道智能高侧开关数据手册TI规格书

描述 Description

The TPS4H82H85-Q1 device is fully protected dual-channel smart high-side switch with two integrated 85mΩ NMOS power FETs intended for 24V and 48V automotive supply systems. Protection and diagnostic features include accurate current sense, selectable current limit levels, OFF-state open-load and short-to-battery detection and thermal shutdown.

High-accuracy current sensing provides a better realtime monitoring effect and more accurate diagnostics without further calibration. The external selectable-level high-accuracy current limit allows setting the current limit value by application. The device highly improves the reliability of the system by effectively clamping the inrush current under start-up or short-circuit conditions. The TPS4H82H85-Q1 device can be used as a high-side power switch for a wide variety of resistive, inductive, and capacitive loads, including low-wattage bulbs, LEDs, relays, solenoids, and heaters.

特性 Features

Qualified for automotive applications

AEC-Q100 qualified with the following results:

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

Device HBM ESD classification level H3A

Device CDM ESD classification level C4B



Functional safety capable

Documentation available to aid functional safety system design



Dual-channel 85-mΩ smart high-side switch with full diagnostics

Wide operating voltage 6 V to 58 V

Ultra-low standby current, < 2 µA per channel

High-accuracy current sense: ±15% under > 50-mA load

Selectable current limit levels with external resistor, ±15% accuracy at 2A load

Protection

Short-to-GND Protection by current limit (internal or external)

Absolute and relative thermal shutdown

Inductive Load negative voltage clamp with optimized slew rate

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



Diagnostics

Overcurrent and short-to-ground detection

Open-Load and short-to-battery detection

Accurate current sense



3.5mm x 3mm small form factor 12-pin QFN package