Texas Instruments ISOTMP35R/-Q1 Analog Temperature Sensors
Texas Instruments ISOTMP35R/-Q1 Analog Temperature Sensors are reinforced isolated temperature sensor ICs that combine an integrated isolation barrier with an analog temperature output. The sensors are designed for co-location with high-voltage heat sources such as power MOSFETs, IGBTs, and busbars, helping eliminate the need for external isolation amplifiers or isolated data converters.
The ISOTMP35R/-Q1 features a 10mV/°C positive output slope, a 500mV offset at 0°C, and a fast thermal response time of less than 4s. The TI ISOTMP35R/-Q1 Analog Temperature Sensors operate from a wide 3.1V to 34V supply range, support a 1.06kVRMS working voltage, and provide 5kVRMS reinforced isolation for high-voltage temperature measurement applications.
The ISOTMP35R is intended for industrial and power-supply applications, while ISOTMP35R-Q1 adds automotive qualification and documentation to aid functional safety system design. Both devices are available in a 12-pin SSOP surface-mount package that supports heat flow from the heat source to the embedded thermal sensor, helping improve heat-source measurement and reduce thermal modeling effort.
Features
- ISOTMP35R-Q1 AEC-Q100 qualified with Grade-0 temperature rating, HBM ESD classification level 2, and CDM ESD classification level C5
- Functional Safety-Capable device with documentation available for ISOTMP35R-Q1 functional safety system design
- Withstand isolation voltage of 5kVRMS and isolation working voltage of 1.06kVRMS
- Isolation barrier lifetime of more than 15 years, with a basic isolation option available
- Analog output with 10mV/°C positive slope and 500mV offset at 0°C
- Output voltage range of 100mV to 2.0V across -40°C to +150°C
- Fast thermal response time of less than 4s
- High CMTI of 65kV/μs
- Low power consumption of 45μA typical
- No external calibration or trimming required for factory-calibrated temperature measurement
Applications
- ISOTMP35R
- AC charging station
- DC fast charging station
- Rack and server PSU with 48V output
- Server PSU with 12V output
- Merchant DC/DC
- Merchant telecom rectifier
- Battery backup unit
- Merchant DIN rail power supply
- AC/DC adapter PSU
- ISOTMP35R-Q1
- HEV/EV battery-management system (BMS)
- HEV/EV on-board and wireless charger
- HEV/EV DC/DC converter
- HEV/EV inverter and motor control
- Powertrain temperature sensor
Specifications
- Reinforced isolation rating with transient isolation voltage of 7000VPK and surge isolation voltage of 10400VPK
- Local sensor accuracy
- ISOTMP35R accuracy of ±2.0°C maximum from 0°C to 70°C and ±3.0°C maximum from -40°C to +150°C
- ISOTMP35R-Q1 accuracy of ±2.5°C maximum from 0°C to 70°C and ±3.5°C maximum from -40°C to +150°C
- ±0.5°C typical accuracy at 25°C for both devices
- Minimum creepage and clearance of 8mm
- Safety-related certification of 5kVRMS isolation for 1 minute per UL 1577
- Package
- DFP, SSOP-12 package
- Size of 10.3mm x 3.6mm
Datasheets
Associated Sensors
Texas Instruments ISOTMP35/ISOTMP35-Q1 Isolierter Temperatursensor
Entwickelt mit Analogausgang mit <2 Sekunden Anschwingzeit und 500 VRMS Betriebsspannung.
ISOTMP35R Functional Block Diagram
ISOTMP35R-Q1 Functional Block Diagram
