Hot-Swap Controller targets 0-16 V backplanes.
Press Release Summary:
Integrating 10-bit ADC for monitoring voltages and currents, single-channel Model MAX5978 allows line cards to be safely inserted and removed from live backplane without causing glitches on system power-supply rail. Volatile memory contains 2 circular buffers that store 5 msec of past current and voltage measurements and can be read back through I²C interface. Housed in 5 x 5 mm TQFN-EP package, IC operates from -40 to +85°C and withstands transients or inductive spikes up to 30 V.
Original Press Release:
Hot-Swap Controller with 10-bit I²C System Monitor Targets High-Availability Systems
Hot-swap controller targets 0 to 16V backplanes in high-availability systems.
Maxim's new hot-swap controller integrates a 10-bit ADC for current and voltage monitoring, thus giving system designers greater control over power consumption and improving system reliability.
SUNNYVALE, CA - Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX5978, a single-channel hot-swap controller for 0 to 16V backplanes. This device allows line cards to be safely inserted and removed from a live backplane without causing glitches on the system power-supply rail. 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 5ms 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 16V inputs, the MAX5978 can withstand transients or inductive spikes up to 30V. This device provides controlled inrush current at startup and two levels of overcurrent protection after startup. The MAX5978 also includes five digital comparators 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.
The MAX5978 is available in a small, 5mm x 5mm, 32-pin TQFN-EP package, and is fully specified for operation over the -40°C to +85°C extended temperature range. Prices start at $3.15 (1000-up, FOB USA).
Maxim Integrated Products is a publicly traded company that designs, manufactures, and sells high-performance semiconductor products. The Company was founded over 25 years ago with the mission to deliver innovative analog and mixed-signal engineering solutions that add value to its customers' products. To date, it has developed over 6300 products serving the industrial, communications, consumer, and computing markets.
Maxim reported revenue in excess of $1.6 billion for fiscal 2009. A Fortune 1000 company, Maxim is included in the Nasdaq 100, the Russell 1000, and the MSCI USA indices. For more information, go to www.maxim-ic.com.
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