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TPS482H85-Q1

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Automotive, 48V, 85-mΩ dual-channel smart high-side switch

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Data sheet

TPS482H85-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Rating Automotive Operating voltage (max) (V) 58 Operating voltage (min) (V) 6 Ron (typ) (mΩ) 85 Imax (A) 2.2 Current limit (max) (A) 10.5 Current limit (min) (A) 0.8 Current limit type Adjustable FET Internal Features Adjustable current limit, Automotive load dump, Current sense output, Fault reporting, Inductive load, Inrush current control, Short circuit protection, Thermal shutdown, Under voltage lock out TI functional safety category Functional Safety-Capable Current limit accuracy +/- 15% @ 0.5A Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Automotive load dump compatibility, Current monitoring, Inductive load compatibility, Inrush current control, Short circuit protection, Thermal shutdown
Number of channels 2 Rating Automotive Operating voltage (max) (V) 58 Operating voltage (min) (V) 6 Ron (typ) (mΩ) 85 Imax (A) 2.2 Current limit (max) (A) 10.5 Current limit (min) (A) 0.8 Current limit type Adjustable FET Internal Features Adjustable current limit, Automotive load dump, Current sense output, Fault reporting, Inductive load, Inrush current control, Short circuit protection, Thermal shutdown, Under voltage lock out TI functional safety category Functional Safety-Capable Current limit accuracy +/- 15% @ 0.5A Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Automotive load dump compatibility, Current monitoring, Inductive load compatibility, Inrush current control, Short circuit protection, Thermal shutdown
VQFN-HR (CHU) 12 10.5 mm² 3 x 3.5
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Functional safety capable
  • Dual-channel 85mΩ smart high-side switch with full diagnostics
  • Wide operating voltage: 6V to 58V
  • Ultra-low standby current, < 2µA per channel
  • High-accuracy current sense: < ±10% for > 50mA
  • Selectable current limit levels with external resistor
  • Protection features:
    • Short-to-GND protection by current limit
    • Absolute and relative thermal shutdown
    • Inductive Load negative voltage clamp with optimized slew rate
    • Loss-of-ground, loss-of-battery, and reverse battery protection
  • Diagnostics features:
    • Overcurrent and short-to-ground detection
    • Open-load and short-to-battery detection
    • Accurate current sense
  • 3.5mm × 3mm small form factor 12-pin QFN package
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Functional safety capable
  • Dual-channel 85mΩ smart high-side switch with full diagnostics
  • Wide operating voltage: 6V to 58V
  • Ultra-low standby current, < 2µA per channel
  • High-accuracy current sense: < ±10% for > 50mA
  • Selectable current limit levels with external resistor
  • Protection features:
    • Short-to-GND protection by current limit
    • Absolute and relative thermal shutdown
    • Inductive Load negative voltage clamp with optimized slew rate
    • Loss-of-ground, loss-of-battery, and reverse battery protection
  • Diagnostics features:
    • Overcurrent and short-to-ground detection
    • Open-load and short-to-battery detection
    • Accurate current sense
  • 3.5mm × 3mm small form factor 12-pin QFN package

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 systems. The low RON minimizes the device power dissipation when driving a wide range of output load current up to 2.2A when both channels are enabled or 3A when only one channel is enabled. Protection and diagnostic features include accurate current sense, selectable current limit levels, OFF-state open-load, short-to-battery detection, output clamp, and thermal shutdown.

The device provides an accurate load current sense that allows for improved load diagnostics such as overload and open-load detection, which enables better predictive maintenance, without further calibration. The device also 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 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.

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 systems. The low RON minimizes the device power dissipation when driving a wide range of output load current up to 2.2A when both channels are enabled or 3A when only one channel is enabled. Protection and diagnostic features include accurate current sense, selectable current limit levels, OFF-state open-load, short-to-battery detection, output clamp, and thermal shutdown.

The device provides an accurate load current sense that allows for improved load diagnostics such as overload and open-load detection, which enables better predictive maintenance, without further calibration. The device also 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 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.
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* Data sheet TPS482H85-Q1: 48V, 85mΩ Automotive Dual-Channel Smart High-Side Switch datasheet (Rev. A) PDF | HTML 09 Oct 2025
Functional safety information TPS482H85-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 17 Sep 2025
Application note Charging Capacitive Loads with Smart High-Side Switches PDF | HTML 12 Sep 2025
EVM User's guide TPS482H85-Q1 Evaluation Module (Rev. A) PDF | HTML 14 Mar 2025
Certificate TPS482H85EVM EU Declaration of Conformity (DoC) 24 Feb 2025

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TPS482H85EVM — TPS482H85EVM evaluation module for 48V high-side switch TPS482H85-Q1

The TPS482H85EVM is a hardware evaluation module (EVM) used to enable hardware engineers to evaluate the full performance and functionality of the TPS482H85-Q1 automotive high-side switch. This EVM provides a seamless way to connect a power supply to the inputs of the TPS482H85-Q1, connect a load (...)
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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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