company blog about Mingjiada Supply TI TPS2HB50 40V Dual-Channel Automotive Smart High-Side Switch For Use In 12V Automotive Systems

Mingjiada Supply TI TPS2HB50 40V Dual-Channel Automotive Smart High-Side Switch For Use In 12V Automotive Systems

As automotive electronic and electrical architectures evolve towards domain and zone control, body load drivers are placing ever-higher demands on the integration, diagnostic capabilities and reliability of high-side switches. As a specialist electronic component supply chain service provider, Mingjiada Electronics has long supplied Texas Instruments’ (TI) TPS2HB50 series of intelligent high-side switches—the TPS2HB50AQPWPRQ1 (an AEC-Q100-certified automotive-grade model). Featuring a 40V voltage rating, a low on-resistance of 50mΩ and a dual-channel integrated design, it provides a highly reliable high-side switch solution for automotive body control, lighting drive and power distribution systems.

Product Description
The TPS2HB50 (TPS2HB50AQPWPRQ1) is a dual-channel automotive-grade intelligent high-side switch developed by TI. It integrates two independently controlled N-channel power MOSFETs and driver circuits. With a typical on-resistance (RDS(on)) of just 50 mΩ per channel and support for a wide operating voltage range of 4.5 V to 40 V, it can directly drive capacitive, resistive and inductive loads such as relays, LED clusters, small motors, heaters and solenoids, amongst other capacitive, resistive and inductive loads.
The TPS2HB50 is designed for automotive 12V/24V electrical systems, is certified to AEC-Q100 Grade 1 automotive standards, and operates within a junction temperature range of –40°C to +150°C. The TPS2HB50 integrates an analogue current monitoring output, providing a proportional output of load current information, which, when used in conjunction with a microcontroller, enables overcurrent diagnosis, open-load detection and short-circuit protection.

Key specifications of the TPS2HB50:
Device part number: TPS2HB50AQPWPRQ1
Device type: Dual-channel intelligent high-side switch
Number of channels: 2 channels (independently controlled)
Operating voltage range: 4.5 V to 40 V
On-resistance RDS(on): 50 mΩ (typical, per channel)
Current monitoring: Analogue proportional current output
Current limit: Programmable threshold
Fault response mode: Latch / Auto-retry selectable
Protection functions: Overcurrent, overtemperature, undervoltage lockout, reverse polarity protection
Diagnostic functions: Analogue current monitoring, open-load detection
Operating junction temperature: –40°C to +150°C

TPS2HB50 Key Features:
Dual-channel intelligent high-side switch with 50 mΩ RON (TJ = 25°C)
Enhanced system-level reliability via adjustable current limit
Current limit adjustable from 1.6 A to 18 A
Robust integrated output protection:
Integrated thermal protection
Ground short-circuit or battery short-circuit protection
Reverse battery event protection, including automatic activation upon voltage reversal
Automatic shutdown in the event of power loss or ground failure
Integrated output clamping for demagnetising inductive loads
Configurable fault handling
Configurable analogue detection outputs for precise measurement of:
Load current
Device temperature
Fault indication via the SNS pin
Open-circuit load and battery short-circuit detection

Application Details
Thanks to its dual-channel integration, low on-resistance and comprehensive diagnostic and protection features, the TPS2HB50 is widely used in the following automotive electronics applications:
Body Control Module (BCM): Drives interior lighting, door locks, windscreen wiper relays and various body loads, enabling centralised power distribution and fault diagnosis.
Automotive lighting systems: Drives LED headlamps, tail lamps, indicator lamps and ambient lighting assemblies; works in conjunction with current monitoring to enable open-circuit/short-circuit detection and brightness diagnostics.
Zone Controllers and Zone Control Units (ZCU): Acts as an intelligent power distribution switch, providing high-side drive and current monitoring for multiple loads within a zone-centred architecture.
Intelligent Power Distribution Box (PDB): Replaces traditional fuse and relay solutions, providing resettable overcurrent protection and load status reporting.
Small Motor and Actuator Drivers: Drive small DC motors and solenoid loads such as seat adjustment, window lifts and folding wing mirrors.
Heating and Auxiliary Loads: Drive seat heating, wing mirror heating and various resistive heating loads, supporting programmable current-limiting protection.
Industrial and Commercial Vehicle Power Distribution: Suitable for 24V commercial vehicle electrical systems and auxiliary power distribution modules in industrial vehicles.

Supply Information
Shenzhen Mingjiada Electronics Co., Ltd. — a long-standing distributor of TI products — maintains a constant stock of the TPS2HB50 series of intelligent high-side switches (including models such as TPS2HB50AQPWPRQ1 and TPS2HB50BQPWPRQ1), and supports sample orders, small-batch purchases and supply by the reel.
For further information regarding the [TI] TPS2HB50 product range or to enquire about sample prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for more supply details.
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