MAX34440 PMBus 6-Channel Power-Supply Manager
Product Details
The MAX34440 is a complex system monitor that can manage up to six power supplies. The power-supply manager monitors the power-supply output voltage and constantly checks for user-programmable overvoltage and undervoltage thresholds. It can also margin the power-supply output voltage up or down to a user-programmable level. The margining is performed in a closed-loop arrangement whereby the device automatically adjusts a pulse-width-modulated (PWM) output and then measures the resultant output voltage. The power-supply manager can also sequence the supplies in any order at both power-up and power-down. With the addition of an external current-sense amplifier, the device can also monitor currents.
Applications
- Base Stations
- Industrial Controls
- Network Switches/Routers
- Servers
- Smart Grid Network Systems
Features and Benefits
- 6 Channels of Power-Supply Management
- Voltage Measurement/Monitoring
- Differential 12-Bit 1% Accurate ADC
- Min/Max Threshold Excursion Detection
- Supports Current Monitoring with External Current-Sense Amplifier
- Automatic Closed-Loop Margining
- Programmable Up and Down Sequencing
- Power-Good Output
- Voltage Measurement/Monitoring
- Supports Up to Eight Temperature Sensors
- Two Remote Diode Temperature Sensors
- Five Local Temperature Sensors
- One Internal Temperature Sensor
- Fault Detection on All Temp Sensors
- PMBus™-Compliant Command Interface
- I2C/SMBus-Compatible Serial Bus with Bus Timeout Function
- On-Board Nonvolatile Fault Logging and Default Configuration Setting
- No External Clocking Required
- +3.3V Supply Voltage