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SGM41298 - 1.5A Thermoelectric Cooler Driver

General Description

The SGM41298 is a monolithic thermoelectric cooling (TEC) thermostat driver device with two-stage feedback amplifier.

The device includes a differential driver (output) stage, an internal 2.5V output reference voltage and two zero-drift, rail-to-rail chopper amplifiers.

Key Features

  • High Efficiency Single Inductor Architecture.
  • Single-ended to Differential Driver with Low RDSON MOSFETs inside.
  • TEC Voltage and Current Monitoring.
  • No External Sense Resistor Required.
  • Independent Heating and Cooling Current/Voltage Limits Programming.
  • PWM Driver Switching Frequency: 2.0MHz (TYP).
  • Two Rail-to-Rail, Zero-Drift Chopper Amplifiers.
  • Compatible with RTD or NTC Thermal Sensors.
  • 2.5V Output Reference Voltage.
  • Patent Pending.
  • Avai.

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Datasheet Details

Part number SGM41298
Manufacturer SG Micro
File Size 1.65 MB
Description 1.5A Thermoelectric Cooler Driver
Datasheet download datasheet SGM41298 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SGM41298 1.5A Thermoelectric Cooler (TEC) Driver GENERAL DESCRIPTION The SGM41298 is a monolithic thermoelectric cooling (TEC) thermostat driver device with two-stage feedback amplifier. The device includes a differential driver (output) stage, an internal 2.5V output reference voltage and two zero-drift, rail-to-rail chopper amplifiers. The first chopper amplifier biases the sensed temperature signal and another is an error amplifier for compensating the closed loop temperature control. This amplifier can be used with a digital controller as well. The TEC is driven differentially between a linear push-pull stage and a pulse-width modulation (PWM) switching stage.