Product details

Imax (A) 10 Current limit (Min) (A) 20 Current limit (Max) (A) 80 Current limit type Adjustable HBM ESD (kV) 2000 Current sense accuracy +13%/-5% @ 1A Features Current sense output, Current sense/monitor, Programmable current limit, Thermal shutdown, Under voltage lock out Rating Automotive
Imax (A) 10 Current limit (Min) (A) 20 Current limit (Max) (A) 80 Current limit type Adjustable HBM ESD (kV) 2000 Current sense accuracy +13%/-5% @ 1A Features Current sense output, Current sense/monitor, Programmable current limit, Thermal shutdown, Under voltage lock out Rating Automotive
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Single-channel smart high-side switch with 8-mΩ RON (TJ = 25°C)
  • Qualified for automotive applications:
    • AEC Q-100 Qualified
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Withstands 40-V load dump
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • Improve reliability through selectable current limiting
    • Current limit set-point at 20 A or 80 A
    • Overcurrent response of current clamping or instant shutdown
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short to ground and battery
    • Automatic switch-on during reverse battery
    • Automatic shut off if loss of battery and ground occurs
    • Integrated output clamp to demagnetize inductive loads
    • Configurable fault handling
  • Analog sense output can be configured to accurately measure:
    • Load current
    • Supply voltage
    • Device temperature
  • Provides FLT indication back to MCU
    • Detection of open load and short-to-battery
  • Single-channel smart high-side switch with 8-mΩ RON (TJ = 25°C)
  • Qualified for automotive applications:
    • AEC Q-100 Qualified
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Withstands 40-V load dump
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • Improve reliability through selectable current limiting
    • Current limit set-point at 20 A or 80 A
    • Overcurrent response of current clamping or instant shutdown
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short to ground and battery
    • Automatic switch-on during reverse battery
    • Automatic shut off if loss of battery and ground occurs
    • Integrated output clamp to demagnetize inductive loads
    • Configurable fault handling
  • Analog sense output can be configured to accurately measure:
    • Load current
    • Supply voltage
    • Device temperature
  • Provides FLT indication back to MCU
    • Detection of open load and short-to-battery

The device is a single-channel smart high-side switch intended for use with 12-V automotive systems. The device integrates robust protection and diagnostic features to ensure output port protection even during harmful events like short circuits. The device protects against faults through a reliable current limit, which, depending on device variant, is available at both 80 A and 20 A and can be configured to react to an overcurrent event by either instantly turning the switch off or by regulating the output current at the set point. The high current limit option allows for usage in loads that require large transient currents, while the low current limit option provides improved protection for loads that do not require high peak current.

The also provides a high accuracy analog current sense that allows for improved diagnostics when driving varied load profiles. By reporting load current, device temperature, and supply voltage to a system MCU, the device enables predictive maintenance and load diagnostics that lengthen the system lifetime.

The is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.

The device is a single-channel smart high-side switch intended for use with 12-V automotive systems. The device integrates robust protection and diagnostic features to ensure output port protection even during harmful events like short circuits. The device protects against faults through a reliable current limit, which, depending on device variant, is available at both 80 A and 20 A and can be configured to react to an overcurrent event by either instantly turning the switch off or by regulating the output current at the set point. The high current limit option allows for usage in loads that require large transient currents, while the low current limit option provides improved protection for loads that do not require high peak current.

The also provides a high accuracy analog current sense that allows for improved diagnostics when driving varied load profiles. By reporting load current, device temperature, and supply voltage to a system MCU, the device enables predictive maintenance and load diagnostics that lengthen the system lifetime.

The is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.

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TPS27SA08 ACTIVE 36-V, 8-mΩ, 10-A, 1-ch, Industrial high-side switch with current sense Industrial version designed for 24-V supply voltages
TPS27SA08-Q1 ACTIVE 36-V, 8-mΩ, 10-A, 1-ch automotive smart high-side switch with current monitoring Automotive version designed for 24-V supply voltage with 40-V load dump

Technical documentation

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Type Title Date
* Data sheet TPS1HA08-Q1, 40-V, 8-mΩ Single-Channel Smart High-Side Switch datasheet (Rev. D) PDF | HTML 18 Dec 2019
Functional safety information TPS1HA08-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 01 Jul 2021
Application note How To Drive Resistive, Inductive, Capacitive, and Lighting Loads (Rev. E) PDF | HTML 09 Mar 2021
Application note Driving PWM Loads with TI High-Side Switches PDF | HTML 02 Mar 2021
Application note Using PSpice Simulator to Model Thermal Behavior in TI’s Smart High-Side Switch PDF | HTML 30 Nov 2020
Application note Fault and Normal Diagnostic Considerations for Smart High Side Switches PDF | HTML 10 Jul 2020
Functional safety information Streamlining Functional Safety Certification in Automotive and Industrial 09 Jun 2020
White paper 簡化汽車及工業領域的功 能安全認證 09 Jun 2020
White paper 자동차 및 산업 분야의 기능적 안전성 인증 간소화 09 Jun 2020
Application note High Accuracy Current Sense of Smart High Side Switches 01 Nov 2019
E-book 11 Ways to Protect Your Power Path 03 Jul 2019
Application note AEC-Q100-012 Short-Circuit Reliability Test Results for Smart Power Switches (Rev. A) 06 May 2019
Application note Basics of Power Switches (Rev. A) PDF | HTML 26 Apr 2019
Application note Improved Automotive Short Circuit Reliability With Adjustable Current Limiting (Rev. A) 11 Apr 2019
Application note Adjustable Current Limit of Smart Power Switches (Rev. B) 21 Jan 2019
Application note Reverse battery protection for high side switches 12 Nov 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

HSS-MOTHERBOARDEVM — High side switches motherboard

The HSS-MOTHERBOARDEVM evaluation module is designed to evaluate the <50mΩ Ron devices in TI's high side switch portfolio. These devices include TPS1HA08-Q1, TPS2HB08-Q1, TPS2HB16-Q1, TPS2HB35-Q1, and TPS2HB50-Q1. This board does not come populated with the devices, but allows any of the (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS1HA08A-Q1 Unencrypted PSpice Transient Model Package (Rev. D)

SLVMC98D.ZIP (60 KB) - PSpice Model
Simulation model

TPS1HA08D-Q1 PSpice Transient Model (Rev. C)

SLVMC99C.ZIP (673 KB) - PSpice Model
Simulation model

TPS1HA08B-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCK7B.ZIP (61 KB) - PSpice Model
Simulation model

TPS1HA08C-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCK8B.ZIP (123 KB) - PSpice Model
Simulation model

TPS1HA08E-Q1 Unencrypted PSpice Transient Model Package

SLVMDM3.ZIP (130 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-01184 — Smart Power Switch for Seat Heater Reference Design

This reference design showcases the TPS1HA08-Q1 device, which is used to control an automotive seat heater. The system consists of a main board and heating element, which represents the resistive heating component found in automotive seat heaters. This system demonstrates the ability to (...)
Schematic: PDF
Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

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