The ADM1073 is a full-feature, negative voltage, hot swap controller that allows boards to be safely inserted and removed from a live −48 V backplane. The part provides precise and robust current limiting, and protection against both transient and nontransient short circuits in overvoltage and undervoltage conditions. The ADM1073 can operate from a negative voltage of −18 V to −80 V and can tolerate transient voltages of up to −200 V.
Inrush current is limited to a programmable value by control-ling the gate drive of an external N-channel FET. The maximum current limit is set by the choice of the sense resistor, RSENSE.
A built-in soft start function allows control of the inrush current profile by an external capacitor on the soft start (SS) pin.
An external capacitor on the TIMER pin determines the time for which the FET gate is controlled to be high when maximum inrush current flows. The ADM1073 employs a limited consec-utive retry scheme, whereby, if the load capacitance is not fully charged within one attempt, the FET gate is pulled low and retries after a cooling period.
|Title||Content Type||File Type|
|ADM1073: Full Feature-48 V Hot Swap Controller Data Sheet (Rev B, 07/2013) (pdf, 309 kB)||Data Sheets|
|AN-805: 05: Altering the ADM1073 Current Limit Level (pdf, 141 kB)||Application Notes|
|AN-694: Hot Swap and Blocking FET Control Using 2 x ADM1073 Hot Swap Controllers (pdf, 105 kB)||Application Notes|
Webcast: Hot Swap Design, How to Get it Right
This webcast closely examines the components of a hot swap design and find out what's critical to getting it right.
|UG-555: Using the ADM1073 Hot Swap Controller Evaluation Kit (pdf, 219 kB)||User Guides|
Temperature monitor measures three thermal zones
by Susan Pratt, Analog Devices, Inc. (EDN, 12/11/03)
|Power System Management (Spring 2007) (pdf, 1170 kB)||Overview|
|Hot Swap And Power Monitoring Bulletin (pdf, 3226 kB)||Solutions Bulletins|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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