Microchip Technology EMC1702 Current-Sense & Temperature Monitor
Microchip EMC1702 Current-Sense & Temperature Monitor is a combination of a high-side current sensing device with precision temperature measurement. It measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. It also measures the source voltage and uses these measured values to present a proportional power calculation. The EMC1702 contains additional bidirectional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Finally, the Microchip EMC1702 includes an external diode channel for temperature measurement and an internal diode for ambient temperature measurements.
The temperature measurement includes advanced features such as Resistance Error Correction (REC), Beta Compensation, and automatic diode type detection. Both current sensing and temperature monitoring include two tiers of protection. One tier can be masked and causes the ALERT pin to be asserted. The other tier cannot be masked and causes the THERM pin to be asserted.
Features
- High-side current sensor
- Bi-directional current measurement
- Measures source voltage and indicates power ratio
- 1% current measurement accuracy
- Integrated over 82ms to 2.6sec with 11-bit resolution
- 3V to 24V bus voltage range
- Independent hardware set instantaneous current peak detector
- Software controls to program time duration and magnitude threshold
- Power supply options
- Bus or separately powered for low voltage operation
- -40°C to +85°C wide temperature operating range
- Internal temperature monitor
- ±1°C accuracy (-5°C < TA < 85°C)
- ALERT and THERM outputs for temperature, voltage, and out-of-current limit reporting
- One external temperature monitor
- 1°C accuracy (20°C < TDIODE < 110°C) with 0.125°C resolution
- Ideality factor setting
- Support for 45nm and 65nm CPU diodes requiring the BJT/transistor model w/ beta compensation
- Determines external diode type and optimal settings
- Resistance Error Correction
- SMBus 2.0 interface
- Pin-selectable SMBus address
- Block read and write
- Available in a 12-pin 4mm x 4mm QFN RoHS compliant package
Applications
- Notebook and desktop computers
- Industrial
- Power management systems
- Embedded applications
Block Diagram
Videos
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Features the Microchip EMC1702 high-side current sensing device with temperature measurement.
Publicado: 2021-05-21
| Actualizado: 2024-07-02