1 Features

• High continuous current capability: 75 ARMS

• Robust reinforced isolation

– Withstand isolation voltage: 5000 VRMS

– Reinforced working voltage: 1100 VDC

• High accuracy

– Sensitivity error: ± 0.3

– Sensitivity drift: ± 20 ppm/°C

– Offset error: ± 1 mV

– Offset drift: ± 20 μV/°C

– Non-linearity: ± 0.1

• Low lifetime drift: ± 0.5 (maximum)

• High immunity to external magnetic fields

• Low power supply rejection ratio: 60 dB

• Signal bandwidth: 1 MHz

• Low propagation delay: 80 ns

• Fast overcurrent detection response: 500 ns

• Operating supply range: 3 V to 5.5 V

• Bidirectional and unidirectional current sensing

• Multiple sensitivity options:

– TMCS1133x1A: 25 mV/A

– TMCS1133B8A: 33 mV/A

– TMCS1133x2A: 50 mV/A

– TMCS1133x3A: 75 mV/A

– TMCS1133x4A: 100 mV/A

– TMCS1133x5A: 150 mV/A

• Safety related certifications (planned)

– UL 1577 Component Recognition Program

– IEC/CB 62368-1

2 Applications

• Solar Energy

• EV charging

• Power supplies

• Industrial AC/DC

• Overcurrent protection

3 Description

The TMCS1133 is a galvanically isolated Hall-effect

current sensor with industry leading isolation and

accuracy. An output voltage proportional to the input

current is provided with excellent linearity and low drift

at all sensitivity options. Precision signal conditioning

circuitry with built-in drift compensation is capable of

less than 2.5 maximum total error over temperature

and lifetime with no system level calibration, or less

than 1.5 maximum total error with a one-time room

temperature calibration (including both lifetime and

temperature drift).

AC or DC input current flows through an internal

conductor generating a magnetic field measured

by integrated on-chip Hall-effect sensors. Coreless

construction eliminates the need for magnetic

concentrators. Differential Hall sensors reject

interference from stray external magnetic fields. Low

conductor resistance increases measurable current

ranges up to ± 96A while minimizing power loss and

easing thermal dissipation requirements. Insulation

capable of withstanding 5000VRMS, coupled with

minimum 8.1 mm creepage and clearance provide

up to 1100VDC reliable lifetime reinforced working

voltage. Integrated shielding enables excellent

common-mode rejection and transient immunity.

Fixed sensitivity allows the TMCS1133 to operate

from a single 3V to 5.5V power supply, eliminates

ratiometry errors, and improves supply noise

rejection.