High Voltage Hot Swap Controllers
With operating voltages up to ±1000 V, Analog Devices’ high voltage hot swap controller ICs provide a rugged and reliable solution for critical, high availability −48 V (such as AdvancedTCA®) and +48 V systems in networking and telecommunications. Galvanic isolation protects low voltage digital circuits controlling high voltage supplies in industrial, datacom, electric vehicle, and avionics systems. Some of the controllers offer board power monitoring capabilities with integrated ADCs, accessible through an I2C/SMBus interface.
Product Selection Table
Latest Resources
Product Selector Card
LT Journal
- Low Quiescent Current Surge Stopper: Robust Automotive Supply Protection for ISO 7637-2 and ISO 16750-2 Compliance PDF
- January 2008 - Surge Stopper Protects Sensitive Electronics from High Voltage Transients PDF
- Mar 2003 - Hot Swap Controller For -48V Offers Comprehensive Protection for Telecom Systems PDF
- Dec 2005 Negative High Voltage Hot Swap Controllers Incorporate an Accurate Supply Monitor and Power Module Sequencing PDF
- Mar 2006 Negative Voltage Hot Swap Controller with 10-Bit ADC and I2C Monitoring PDF
- November 2004 - Hot Swap for High Availability Systems PDF
- August 2004 - Versatile 80V Hot Swap Controllers Drive Large MOSFETs; Improve Accuracy and Foldback Current Limiting PDF
- Sep 2003 Versatile Hot Swap Controller with Open Circuit Detect, Foldback Current Limiting and Much More PDF
- Aug 1998 48 Volt Hot Swap Controller for Negative Voltages PDF
- 100V Surge Stopper Protects Components from 300V Transients
- Surge Stopper IC Simplifies Design of Intrinsic Safety Barrier for Electronics Destined for Hazardous Environments
- High Voltage Surge Stoppers Ease MIL-STD-1275D Compliance by Replacing Bulky Passive Components
- MOSFET Safe Operating Area and Hot Swap Circuits
Technical Articles
- LTspice: Using Time-Dependent Exponential Sources to Model Transients
- LTspice: SOAtherm Support for PCB and Heat Sink Thermal Models
- LTspice: Models of ISO 7637-2 & ISO 16750-2 Transients
- LTC4218 12V/100A Hot Swap Design for Server Farms
- LTC4226 Parallel MOSFETs in Hot Swap Circuits
- Understanding Power Monitor Accuracy
- Surge Stoppers Ease MIL-STD-1275D Compliance
- LTspice: Modeling Safe Operating Area Behavior of N-channel MOSFETs
Videos
Design Notes
- DN534 - Surge Stoppers Ease MIL-STD-1275D Compliance PDF
- DN290 - Monitor Network Compliant -48V Power Supplies PDF
- DN360 - Protecting and Monitoring Hot Swappable Cards in High Availability Systems PDF
- DN353 - AdvancedTCA Hot Swap Controller Eases Power Distribution PDF
- DN226 - A 24V/48V Hot Swap Controller PDF
- DN397 - AdvancedTCA Hot Swap Controller Monitors Power Distribution PDF
- DN437 - Hot Swap Solution Meets AMC and MicroTCA Standards PDF
High Voltage Hot Swap Controllers
| SortOrder | Part# | Circuit Breakers | Vin Range | Circuit Breaker Threshold | Circuit Breaker Accuracy (typ) (%) | Isupply (typ) (A) | Features | Comments | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC4284 | 1 | -12V to -100V | 15mV to 30mV | 2 | 2.5 | 16-bit ADC, Energy Monitor | High Power Negative Voltage Hot Swap Controller with Energy Monitor | $6.95 (LTC4284CUHG#PBF) |
| 2 | LTC4283 | 1 | -12V to -100V | 15mV to 30mV | 2 | 2.5 | 16-bit ADC, Energy Monitor | Negative Voltage Hot Swap Controller with Energy Monitor | $5.75 (LTC4283CUHF#PBF) |
| 3 | ADM1272 | 1 | 16V to 80V | 1.4mV to 29mV | 2.3 | 5.3m | 12-bit ADC, Digital Interface, PMBus | High Voltage Positive Hot Swap Controller and Digital Power Monitor with PMBus | $8.97 (ADM1272-1ACPZ) |
| 4 | LTM9100 | 1 | - | 50mV | 10 | 50m | 10-bit ADC, Digital Interface, Galvanic Isolation | Anyside High Voltage Isolated Switch Controller with I²C Command and Telemetry | $19.45 (LTM9100CY#PBF) |
| 5 | LTC4380 | 1 | 4V to 72V | 50mV | 10 | 8µ | Low Iq, Surge Stopper | Ride-through protection with 8uA Iq, Adjustable output-clamp and circuit-breaker with timer, Shutdow | $2.48 (LTC4380CDD-1#PBF) |
| 6 | ADM1270 | 1 | 4V to 60V | 12.5mV to 62.5mV | 6 | 360m | - | High Voltage Input Protection Device | $0.99 (ADM1270ACPZ-R2) |
| 7 | LTC4231 | 1 | 2.7V to 36V | 50mV | 6 | 4µ | Low Iq | Low Iq Hot Swap Controller, -1 remains off after fault, -2 automatic retry | $2.25 (LTC4231CMS-1#PBF) |
| 8 | LTC4226 | 2 | 4.5V to 44V | 50mV | 10 | 700µ | - | Wide Operating Range Dual Hot Swap Controller | $3.10 (LTC4226CMS-1#PBF) |
| 9 | LTC4364 | 1 | 4V to 80V | 50mV | 10 | 370µ | Ideal Diode, Surge Stopper | Ride-through protection with ideal diode, Adjustable output-clamp and circuit-breaker with timer, Sh | $3.45 (LTC4364CDE-1#PBF) |
| 10 | LTC4253B | 1 | -15V to -500V | 50mV | 20 | 800µ | - | -48V Hot Swap Controller with Sequencer | $2.95 (LTC4253BCGN#PBF) |
| 11 | LT4363 | 1 | 4V to 80V | 50mV | 10 | 700µ | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, Shutdown mode, Latc | $2.48 (LT4363CDE-1#PBF) |
| 12 | ADM1075 | 1 | -35V to -80V | 1.25mV to 24.25mV | 2.8 | 4.2m | 12-bit ADC, Digital Interface, PMBus | -48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface | $4.99 (ADM1075-1ACPZ) |
| 13 | LT4356MP-2 | 1 | 4V to 80V | 50mV | 15 | 1m | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, -55C to 125C Operat | $5.94 (LT4356MPS-2#PBF) |
| 14 | LT4356MP-1 | 1 | 4V to 80V | 50mV | 15 | 1m | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, -55C to 125C Operat | $5.94 (LT4356MPS-1#PBF) |
| 15 | LT4356-3 | 1 | 4V to 80V | 50mV | 10 | 1m | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, Shutdown mode, Latc | $1.98 (LT4356CDE-3#PBF) |
| 16 | LT4356-2 | 1 | 4V to 80V | 50mV | 10 | 1m | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, Shutdown mode (aux | $1.98 (LT4356CDE-2#PBF) |
| 17 | LT4356-1 | 1 | 4V to 80V | 50mV | 10 | 1m | Surge Stopper | Ride-through protection, Adjustable output-clamp and circuit-breaker with timer, Shutdown mode, Auto | $1.98 (LT4356CMS-1#PBF) |
| 18 | LTC4261 | 1 | -12V to -100V | 50mV | 10 | 2m | 10-bit ADC, Digital Interface | Negative voltage hot swap controller with ADC and I2C, Defaults to latchoff, -2 for Auto-Retry | $5.95 (LTC4261CGN#PBF) |
| 19 | LTC4260 | 1 | 8.5V to 80V | 50mV | 10 | 2m | 8-bit ADC, Digital Interface | Positive High Voltage Hot Swap Controller with I²C Compatible Monitoring | $5.95 (LTC4260CGN#PBF) |
| 20 | LT4256-3 | 1 | 10.8V to 80V | 55mV | 18 | 1.8m | - | Positive high voltage hot swap controller with open circuit detect output. Higher voltage version of | $2.10 (LT4256-3CGN#PBF) |
| 21 | ADM1073 | 1 | -18V to -80V | 90mV | 4.4 | 300m | - | -48 V Full Feature Hot Swap Controller | $2.19 (ADM1073ARUZ) |
| 22 | LT4254 | 1 | 10.8V to 36V | 50mV | 20 | 1.9m | - | Positive high voltage hot swap controller with open circuit detect output | $1.95 (LT4254CGN#PBF) |
| 23 | LT4256-1/-2 | 1 | 10.8V to 80V | 55mV | 18 | 1.8m | - | Positive high voltage hot swap. Pin-compatible with LT1641. -1 Latchoff, -2 Auto-Retry | $1.75 (LT4256-2CS8#PBF) |
| 24 | ADM1070 | 1 | -18V to -80V | 88mV | 14 | 850m | - | - 48 V Hot Swap Controller in SOT-23 with Linear Current Limiting | $1.62 (ADM1070ARTZ-REEL7) |
| 25 | LTC4252 | 1 | -15V to -500V | 50mV | 10 | 800µ | - | Negative voltage hot swap controllers, -1 Latchoff, -2 Auto-Retry, LTC4252A for tighter UV/OV/ECB ac | $2.00 (LTC4252-1CMS8#PBF) |
| 26 | LTC4251 | 1 | -15V to -500V | 50mV | 20 | 800µ | - | Negative voltage hot swap controllers in SOT-23, Options for UV/OV thresholds | $2.01 (LTC4251-1CS6#TRPBF) |
| 27 | LT4250 | 1 | -18V to -80V | 50mV | 20 | 1.6m | - | -48V hot swap controller, Powergood active high (H) or low (L) | $2.30 (LT4250HCN8#PBF) |
| 28 | LT1640A | 1 | -10V to -80V | 50mV | 20 | 1.3m | - | -48V hot swap controller, Improved drain pin ruggedness, Powergood active high (AH) or low (AL) | $1.90 (LT1640AHCN8#PBF) |
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