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).
- Building blocks approach powers low-cost USB Type-C solution
- PMICs are tailored for Intel’s Skylake-based mobile PC products
- Power Integrations adds InnoSwitch device for optimised fast charging
- Lower power PMIC for IoT and wearables, isolated until first-use
- Dual-port power controller for UBC type C, with demo board
- System power IC aids automotive functional safety
- PSU controller for ultra-low standby power in USB chargers
- Automotive multi-regulators for smaller, cheaper car-infotainment systems
- IP builds ultra-low power 32-bit MCU with advanced power modes
- Digi-Key’s pushes IDT’s wireless power reference kits through hackster
- 38V dual PMBus DC/DC controller with current mode control
- Power management IC eases hearing aids design
- Integrated 7.8 mΩ power switch handles 9A, with reverse-blocking
- LLC controller claims best-in-class efficiency for isolated DC-DC converters
- Battery cell controllers for low-cell-count connected designs
- Lithium-ion battery shipments on passenger planes face international ban
- England unveils incentives to switch to electric cars
- Are lithium battery nanoparticles a landfill hazard?
- Power outage LED lightbulb prepares to enter mass production
- Superoxide boosts lithium-air battery performance
- Innovative powertrain reduces fuel consumption significantly
- BMW launches energy storage company
- FDSOI 28-nm memory compiler offers 50 percent dynamic power savings
- Graphene cage for silicon anode boosts high-performance batteries
- Self-heating lithium-ion battery combats freezing tempatures
- Italian startup wants to speed up transition to EVs
- Transparent metamaterials boost prospect of low power photonic circuits
- Solar-cell 'doctor' seeks to cure greenhouse gas emission problems
- Managing heat: Watching electrons cool in fractions of a second
- Low-power, long-range WiFi; imec shows all-digital HaLow transmitter
- Rotor temperature monitoring with wireless and battery-free sensors
- 42V Quad Monolithic Synchronous Step-Down Regulator with 30μA Quiescent Current
- Differential Drive CMOS Rectifiers for RF Energy Harvesting
- Compensation Methods in Voltage Regulators
- Digital Power System Management - Take Control of Your Power Supplies
- Battery Size Matters
- Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard