1 Features

• SIL 3 Functional Safety-Compliant (Targeted for

TPS37102)

– Documentation to aid IEC 61508 system design

– Systematic capability up to SIL 3 targeted

– Hardware capability up to SIL 3 targeted

• Functional Safety-Capable (TPS37100)

– Documentation available to aid functional safety

system design

• Wide supply voltage range: 3V to 105V

• Low quiescent current: 5μA

• High threshold accuracy: 1.1% (maximum)

• -95V reverse polarity protection on SENSE

• 5μs fast UV/OV monitor for 24V/48V systems

• Integrated buffer (AOUT) for supply voltage

measurement with enable pin

• Fixed and programmable release time delay

• Fixed and programmable sense time delay

• Open-drain, active-low output: OUT A and OUT B

• BIST and Latch available for TPS37102

2 Applications

• Analog input module

• CPU (PLC controller)

• Servo drive control module

• Servo drive power stage module

• Servo drive functional safety module

3 Description

The TPS37100 and TPS37102 are 105V input voltage

supervisors with low quiescent current (5uA), fast

detection time, and an integrated buffer for supply

voltage measurements. This family of devices can

be connected directly to voltages or battery rails

up to 105V for continuous monitoring of over (OV)

or under (UV) voltage conditions. Wide hysteresis

voltage options are available to ignore false output

deassertions that are be caused by battery voltage

transients.

The TPS37100 and TPS37102 include two outputs

(OUT A and OUT B) that are used as separate

OV and UV fault monitors enabling system to take

different action based on the fault that occurs.

Additionally, the AOUT pin provides a scaled down

SENSE pin voltage output and is intended to be

sampled by ADC for supply voltage measurements.

The user can choose the scaling factor desired based

on the orderable part selected. The TPS37102 comes

with BIST which is implemented at start-up to verify

device health as well as an optional latching feature

on OUT A to help the system bring into a safe state

when critical faults occurs.