Microchip Technology PAC1921 High-Side Power/Current Monitor
Microchip Technology PAC1921 High-Side Power/Current Monitor is a dedicated power-monitoring device with a configurable analog output of 3V, 2V, 1.5V, or 1V. The PAC1921 monitor can present power, current, or voltage and is designed for power measurement and diagnostic systems. Measurements are accumulated in large lossless registers that allow for integration periods from 500μs to 2.9 seconds.
Features
- Configurable Measurement Type Output
- Power, Current, or Bus Voltage
- 3V, 2V, 1.5V, and 1V configurable voltage output
- All output values also available over SMBus
- Device topology
- Provides integrated average power measurement
- Power measurements provided to the microcontroller with ADC inputs
- Unique lossless integrating architecture allows operation at low sense voltages
- Output voltage proportional to the selected measurement
- High-side current sensor
- 100mV full-scale current sense voltage range
- Second-order delta-sigma ADC with 11-bit or 14-bit resolution
- 1x through 128x selectable current binary gain ranges
- 1% power measurement accuracy
- Auto-zero offset
- Auto sleep state
- Automatically shifts to a low-power state (3.5μA)
- Power Supply
- 3.3V VDD (nominal) (operational range 3V to 5.5V)
- 0V to 32V bus voltage range
- No input filters required
- Available in a 10-pin 3x3mm VDFN RoHS compliant package
Applications
- Diagnostic Equipment
- Servers
- Power supplies
- Industrial and power management systems
- Notebook and desktop computers
PAC1921 Monitor Block Diagram
Associated Tool
Microchip Technology ADM00592 PAC1921 Evaluation Board
A dedicated power monitoring device with a configurable analog output.
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Published: 2016-08-17
| Updated: 2022-03-11