Hot-swap controller integrates 10-bit I2C system monitor to target high-availability systems
The MAX5978 integrates a 10-bit ADC for monitoring voltages and currents, thus allowing system designers to monitor power consumption and system reliability. Targeted applications include networking, base-station, storage, and computer server line cards.
The integrated 10-bit ADC and I2C-compatible interface provide precise monitoring of currents, voltages, and fault conditions in hot-swappable line cards. Additionally, the MAX5978 integrates volatile memory containing two circular buffers that store 5 ms of past current and voltage measurements. The buffers can be read back through the I2C interface at anytime or after a fault has occurred. Buffer data can be used by the system to determine if a line card is using its allocated power or operating abnormally, thereby improving overall system reliability.
Rated for 0 to 16 V inputs, the MAX5978 can withstand transients or inductive spikes up to 30 V. This device provides controlled inrush current at startup and two levels of overcurrent protection after startup.
The MAX5978 also includes five digital comparators per hot-swap channel to provide overcurrent warning, two levels of overvoltage detection, and two levels of undervoltage detection. Four I/Os can be independently configured as general-purpose I/Os (GPIOs) or as open-drain LED drivers with programmable blanking. Other features include alert outputs to indicate undervoltage, overvoltage, and overcurrent faults. This controller can be configured for latched-off or autoretry fault management.
Availability and Pricing
The MAX5978 is available in a small, 5 mm x 5 mm, 32-pin TQFN-EP package, and is fully specified for operation over the -40 to +85 degrees Celsius extended temperature range. Prices start at 3.15 US Dollars (1000-up, FOB USA).
- Renesas MCUs cut power demand in domestic/industrial sensing
- Push button reboot controller draws 0.01μA in standby
- Solar film air dome solution targets energy self-sufficiency
- Heliatek completes world's first BIOPV concrete façade installation
- Low-power FRAM with integrated counter function, for energy harvesting apps
- 60V, synchronous buck-boost controller regulates up to 250W
- High-efficiency wireless power transmitters for wire-free charging
- 16-bit, 200 Msps ADCs claim lowest power levels
- Secure NFC/RFID tag authenticator with energy harvesting
- Power metering IC platform cuts design time for worldwide utilities
- High-voltage, latchup-free analogue switches come in 16-ch BGA packages
- Heliatek installs largest BIOPV in Germany
- IP builds low power memory for LCD drivers and touch screen controllers
- Fastest, most accurate and lowest-power high-temp SAR ADC, claims ADI
- High-efficiency buck-boost and boost+bypass switching regulators
- Are next generation EV batteries a step closer?
- Are power management researchers really 21st century alchemists?
- First round-the-world solar plane flight prepares for take-off
- GaN: The dawn of a new era?
- Long life aluminium-air battery resolves rechargeable challenges
- Solar-powered radio chip monitors windows to save energy
- How to measure capacity versus bias voltage on MLCCs
- Bamboo bike uses peddle power to recharge smartphones
- Apple Watch spurs wireless charging growth in 2015
- Product How-to: Ultra-low noise linear regulators for powering PLL/VCO and clocking ICs
- Hybrid fuel cell advance boosts power by 20 percent
- Conquering the 'kink' in sub-threshold power MOSFET behavior: A simple compact modeling approach
- Multi-crystalline silicon PV module claims power output world record
- Tesla Roadster targest 400-mile range with one charge
- World's first G.fast reverse power feeding is demonstrated
- Investigating Die attach Failure in IGBTs using Power Cycling Tests
- Power Systems Design eBook
- Wireless Power User Guide
- A Novel Approach to Industrial Rectifier Systems
- Smartphone SoC Power Efficiency - DVFS Capacitor Switching
- Power Modules: The New Super Power
- Digital Power Management Reduces Energy Costs While Improving System Performance