Product details


Current limit (Min) (A) 12.8 Driver configuration High side Current limit type Fixed open-in-new Find other High-side switches

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other High-side switches


  • Single-channel smart high-side switch with a typical 9-mΩ RON (TJ = 25°C)
  • Improve reliability through overcurrent protection:
    • Current limit threshold nominally at 20 A
    • Current limiting (clamping) on reaching the threshold
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short to ground and supply
    • Automatic FET switch-on during reverse supply
    • Automatic shut off if loss of supply 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 in off-state and short-to-GND

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open-in-new Find other High-side switches


The TPS27SA08 device is a single-channel smart high-side switch intended for use with 24-V supply 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, 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 (nominally 20 A). The TPS27SA08 device 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 TPS27SA08 device is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.

open-in-new Find other High-side switches

Technical documentation

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Type Title Date
* Data sheet TPS27SA08 36-V, 10-A, Single-Channel Smart High Side Switch datasheet Nov. 04, 2020
Technical article Bulk up your 24-VDC power distribution with industrial high-side switches May 04, 2021
User guide High Side Switch Motherboard Evaluation Module (Rev. B) Oct. 29, 2020

Design & development

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

Hardware development

High side switches motherboard
document-generic User guide
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 (...)
  • Single or dual-channel high-side power switch, tested according to AECQ100-12
  • High-accuracy current sense
  • Reverse battery protection with external ground network
  • Short circuit and overvoltage protection
  • Themal shudown and thermal swing self-recovery

Design tools & simulation

SLVMDF5.ZIP (127 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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HTSSOP (PWP) 16 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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Support & training

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