1 Features
• AEC-Q100 qualified for automotive applications
– Temperature grade 1: –40°C to 125°C
– Device HBM ESD classification level 2
– Device CDM ESD classification level C5
– Withstands 35-V load dump
• Functional Safety-Compliant Development
– Documentation on safety mechanisms will be
available at product release to aid ISO 26262
system design up to ASIL-B
• Dual-channel SPI controlled smart high-side switch
with a typical 11-mΩ Rdson at 25°C FET
• Integrated wire-harness protection without MCU
involvement and a SPI programmable fuse curve
– Protection against persistent overload condition
• Improve system level reliability through SPI
programmable adjustable overcurrent protection
– Overcurrent protection threshold: 10 to 70 A
• SPI configurable capacitive charging mode to drive
a wide range of capacitive input ECUs load current
needs.
• Low quiescent current, low power ON-state to
supply always-ON loads with automatic wake on
load current increase with wake signal to MCU
• Robust integrated output protection:
– Integrated thermal protection
– Protection against short-to-ground
– Protection against reverse battery events
including automatic switch on of FET with
reverse supply voltage
– Automatic shut off on loss of battery and
ground
– Integrated output clamp to demagnetize
inductive loads
• Digital sense output via SPI can be configured to
measure:
– Load current accurately with integrated ADC
– Output or supply voltage, FET temperature
• Provides full fault diagnostics through SPI interface
and indication through FLT pin
– Detection of open load and short-to-battery

2 Applications
• Automotive zone ECU
• Power distribution modules
• Body control modules

3 Description
The TPS2HCS10-Q1 device is a dual channel,
smart high-side switch controlled through a serial
peripheral interface (SPI). The device integrates
robust protection to ensure output wire and load
protection against short circuit or overload conditions.
The device features overcurrent protection which is
configurable via SPI in two ranges of thresholds.
This allows sufficient flexibility to support loads
that require large inrush currents, while providing
improved protection. Further, the device integrates
a programmable fuse profile (current versus time)
that turns off the switch under persistent overload
condition, thereby reducing the overhead on the MCU.
These two features together allow optimization of the
wire harness for any load profile with full protection.
The device supports a SPI-configurable capacitive
charging mode for ECU loads in power distribution
switch applications. The device also includes a low
quiescent current ON-state that provides up to 800
mA of peak current while consuming about 10 μA of
current.
The TPS2HCS10-Q1 device also provides a high
accuracy digital current sense over SPI that allows for
improved load diagnostics. By reporting load current
and the channel output voltage and output FET
temperature to a system MCU, the device enables
diagnosis of switch and load failures.
The TPS2HCS10-Q1 is available in a HTSSOP
package which allows for reduced PCB footprint.