1 Features

• Qualified for automotive applications

– AEC-Q100 grade 1: –40°C to 125°C ambient

operating temperature

• Integrated high-voltage resistor divider

– 30MΩ total resistance, precision matched

divider

– No exposed high-impedance nodes

improves measurement integrity from board

contaminants

• Integrated high-voltage disconnect switch

– 1200V standoff voltage, uni-directional blocking

– < 1.5μA leakage at TA = 105°C

• Integrated precision amplifier

– Buffered output for easy interfacing to analogto-

digital converters

– Dynamically selectable gain settings to

maximize accuracy across high-voltage sensing

range

• Measurement accuracy: ±0.25%

• Support for uni-directional and bi-directional

voltage sensing up to ±1200V

• Dynamic switching between uni-directional and bidirectional

voltage sensing operation

• Low supply current

– 5mA ON state current

– 5.5μA OFF state current

• SOIC (DWQ-11) package

– Creepage and clearance ≥ 8mm from highvoltage

sensing pin to all other pins

2 Applications

• Hybrid, electric, and power train systems

• Battery management systems (BMS)

• Solar energy

3 Description

The TPS4141-Q1 is a high-voltage, precision

matched resistor divider with an integrated

programmable-gain amplifier. The TPS4141-Q1 also

integrates a high-voltage switch to allow for

connecting or disconnecting the high-voltage sense

pin and provides uni-directional current blocking when

disconnected. The device is designed for automotive

and industrial applications where accurate, highvoltage

measurements are required.

The TPS4141-Q1 programmable-gain amplifier

supports four divider ratios using DIV0 and DIV1

inputs. DIV0 and DIV1 can be set to fixed divider

ratios and may also be changed dynamically while

in operation. This allows for matching the amplifier

output (AOUT) to the full-scale input voltage of

the analog-to-digital signal chain, improving accuracy

over the entire voltage sensing range of interest.

The TPS4141-Q1 supports uni-directional or bidirectional

voltage measurement. Bi-directional

voltage measurement is supported by supplying

an external precision voltage reference from REF

to HVGND. Switching between bi-directional and

uni-directional voltage sensing during operation is

possible using DIV0 and DIV1. Connecting REF to

HVGND provides uni-directional voltage sensing only.

The TPS4141-Q1 integrates a high-voltage switch

with a standoff voltage greater than 1200V from the

high-voltage sense pin (HV) to ground (HVGND). The

switch provides uni-directional current blocking from

HV to HVGND when disconnected.