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ADM1073:  -48 V Full Feature Hot Swap Controller

Product Details


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.

FEATURES and BENEFITS

  • Precision In-Rush Linear Current Limit
  • Adjustable Soft Start In-Rush Current Limit Profiling
  • Precision Maximum On Time in Current Limit
  • Max On-Time Modulated by FET Drain Voltage for Additional SOA Protection
  • Adjustable PWM Retry Scheme and Multiple Device Cascading
  • Capability for Charging Large Capacitive Loads
  • Shunt Regulator Topology Allows For Very Large Transient Input Supplies
  • Precision UnderVoltage and OverVoltage Monitors with Separate UV and OV Pins and Programmable UV and OV Hysteresis

Functional Block Diagram for ADM1073

Documentation

Title Content Type File Type
ADM1073: Full Feature-48 V Hot Swap Controller Data Sheet (Rev B, 07/2013) (pdf, 309 kB) Data Sheets PDF
AN-805: 05: Altering the ADM1073 Current Limit Level  (pdf, 141 kB) Application Notes PDF
AN-694: Hot Swap and Blocking FET Control Using 2 x ADM1073 Hot Swap Controllers  (pdf, 105 kB) Application Notes PDF
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.
Webcasts WEBCAST
UG-555: Using the ADM1073 Hot Swap Controller Evaluation Kit  (pdf, 219 kB) User Guides PDF
Temperature monitor measures three thermal zones
by Susan Pratt, Analog Devices, Inc. (EDN, 12/11/03)
Technical Articles HTML
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
Hot Swap And Power Monitoring Bulletin  (pdf, 3226 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADM1073 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1073ARUZ Status: Production 14 ld TSSOP 14 Ind Tube, 96 $2.28 $2.13 Y  Material Info PCN Purchase Sample
ADM1073ARUZ-REEL Status: Production 14 ld TSSOP 14 Ind Reel, 2500 - $2.13 Y  Material Info PCN Purchase
ADM1073ARUZ-REEL7 Status: Production 14 ld TSSOP 14 Ind Reel, 1000 - $2.13 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADM1073 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADM1073MEBZ Status: Production Evaluation Board $44.53 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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