PowerPath, Ideal Diodes & Load Switches
Analog Devices’ PowerPath and ideal diode controllers protect power supplies by minimizing reverse currents back into the supply and shoot-through currents between supplies. Selection of the power source can be either by the highest voltage or highest priority.
For highest voltage selections, ideal diodes are employed in a diode-OR configuration. Applications include redundant supply ORing, supply holdup during input brownout, and reverse battery protection. For selection by highest priority, a prioritized PowerPath controller provides the most general-purpose and flexible solution. A prioritizer powers the system from the highest priority input that is within its valid voltage window. Applications occur in battery-equipped portable products, memory modules with capacitive holdup, and server subsystems with main and auxiliary supplies.
For highest voltage selections, ideal diodes are employed in a diode-OR configuration. Applications include redundant supply ORing, supply holdup during input brownout, and reverse battery protection. For selection by highest priority, a prioritized PowerPath controller provides the most general-purpose and flexible solution. A prioritizer powers the system from the highest priority input that is within its valid voltage window. Applications occur in battery-equipped portable products, memory modules with capacitive holdup, and server subsystems with main and auxiliary supplies.
Таблица выбора продукта
Актуальные ресурсы по теме
Журнал LT
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- Easy Balanced Load Sharing for Three or Four Supplies, Even with Unequal Supply Voltages
- 18V Buck-Boost Converter with Intelligent PowerPath Control Delivers >2A at 95% Efficiency from Dual Inputs
- 0V to 18V Ideal Diode Controller Saves Watts and Space over Schottky
- Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions
Технические статьи
- Using a Current Sharing Controller with Non-Redundant Supplies
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- Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions
- Primer on PowerPath Controllers, Ideal Diodes & Prioritizers
- High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245
- LTspice: Using Time-Dependent Exponential Sources to Model Transients
- Negative Voltage Ideal Diodes (Diode-OR Controllers)
- Three Bucks Plus a Boost Controller Meet the Stringent Requirements of Wide-Range VIN Automotive Applications
Статьи по применению
Брошюры и бюллетени
PowerPath, Ideal Diodes & Load Switches
| SortOrder | Part# | # of Channels | Vin (min) (V) | Vin (max) (V) | Typical Current Capability (typ) (A) | Ideal Diode | Total Quiescent Current (typ) (A) | Comments | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC4376 | 1 | 4 | 40 | 7 | Internal, N-Channel, Single | 150µ | 7A Ideal Diode with Reverse Input Protection | $2.55 (LTC4376CDHD#PBF) |
| 2 | LTC4418 | 2 | 2.5 | 40 | 5 | Dual, External, P-Channel | 26µ | Dual Channel Prioritized PowerPath Controller | $2.45 (LTC4418CUF#PBF) |
| 3 | LT8672 | 1 | 3 | 42 | 20 | External, N-Channel, Single | 20µ | Active Rectifier Controller with Reverse Protection | $1.95 (LT8672EDDB#TRPBF) |
| 4 | LTC4420 | 2 | 1.8 | 18 | 500m | Dual, Internal, P-Channel | 3.6µ | 18V Dual Input Micropower PowerPath Prioritizer with Backup Supply Monitoring | $2.95 (LTC4420CDD#PBF) |
| 5 | LTC4419 | 2 | 1.8 | 18 | 500m | Dual, Internal, P-Channel | 3.6µ | 18V Dual Input Micropower PowerPath Prioritizer | $2.75 (LTC4419CDD#PBF) |
| 6 | LTC3126 | 2 | 2.4 | 42 | 2.5 | Dual, Internal, N-Channel | 5.5µ | 42V, 2.5A Synchronous Step-Down Regulator with No-Loss Input PowerPath | $3.95 (LTC3126EUFD#PBF) |
| 7 | LTC4371 | 2 | -500 | -4.5 | 20 | Dual, External, N-Channel | 300µ | Dual Negative Voltage Ideal Diode-OR Controller and Monitor | $2.50 (LTC4371CDD#PBF) |
| 8 | LTC4236 | 2 | 2.9 | 18 | 20 | Dual, External, N-Channel | 3.58m | Dual Ideal Diode-OR and Single Hot Swap Controller with Current Monitor | $4.25 (LTC4236CUFD-1#PBF) |
| 9 | LTC3118 | 1 | 2.2 | 18 | 2 | Dual, Internal, N-Channel | 50µ | 18V, 2A Buck-Boost DC/DC Converter with Low-Loss Dual Input PowerPath | $5.75 (LTC3118EUFD#PBF) |
| 10 | LTC4235 | 2 | 9 | 14 | 20 | Dual, External, N-Channel | 3.64m | Dual 12V Ideal Diode-OR and Single Hot Swap Controller with Current Monitor | $3.95 (LTC4235CUFD-1#PBF) |
| 11 | ADP1290 | 1 | 2.3 | 13.2 | 2 | Load Switch | 15µ | 12 V, 2 A Logic Controlled High-Side Power Switch | $0.88 (ADP1290ACBZ-R7) |
| 12 | LTC4229 | 1 | 2.9 | 18 | 20 | External, N-Channel, Single | 2.53m | Ideal Diode and Hot Swap Controller | $2.95 (LTC4229CG#PBF) |
| 13 | LT4321 | 2 | 20 | 80 | 20 | Dual Bridges with External N-Channel | 500µ | PoE Ideal Diode Bridge Controller | $1.48 (LT4321IUF#PBF) |
| 14 | ADP1190A | 4 | 1.4 | 3.6 | 500m | Load Switch | - | Integrated 500 mA Load Switch with Quad Signal Switch | $0.60 (ADP1190AACBZ-R7) |
| 15 | LT4320-1 | 1 | 9 | 72 | 20 | Single Bridge with External N-Channel | 1.3m | Ideal Diode Bridge Controller - DC to 600Hz | $3.25 (LT4320IMSE-1#PBF) |
| 16 | LT4320 | 1 | 9 | 72 | 20 | Single Bridge with External N-Channel | 1.3m | Ideal Diode Bridge Controller - DC to 60Hz | $2.95 (LT4320IDD#PBF) |
| 17 | ADP1196 | 1 | 0 | 5.5 | 3 | Load Switch | 26µ | 5 V, 3 A Logic Controlled High-Side or Low-Side Load Switch | $0.50 (ADP1196ACBZ-02-R7) |
| 18 | LTC4417 | 3 | 2.5 | 36 | 5 | External, P-Channel, Triple | 28µ | Prioritized PowerPath Controller with -42V Reverse Input Protection | $3.05 (LTC4417CUF#PBF) |
| 19 | ADP196 | 1 | 1.8 | 5.5 | 3 | Load Switch | 25µ | 5 V, 3 A, Logic Controlled High-Side Power Switch | $0.50 (ADP196ACBZ-01-R7) |
| 20 | ADP1190 | 4 | 1.4 | 3.6 | 500m | Load Switch | - | Integrated 500 mA Load Switch with Quad Signal Switch | $0.60 (ADP1190ACBZ-R7) |
| 21 | LTC4228 | 2 | 2.9 | 18 | 20 | Dual, External, N-Channel | 2.95m | Dual ideal diode and hot swap controller, -1 Latchoff, -2 Auto-Retry | $3.59 (LTC4228CGN-1#PBF) |
| 22 | LTC4370 | 2 | 0 | 18 | 20 | Dual, External, N-Channel | 2.25m | Two-Supply Diode-OR Current Balancing Controller | $4.95 (LTC4370CDE#PBF) |
| 23 | LTC4364 | 1 | 4 | 80 | 20 | External, N-Channel, Single | 483µ | Ride-through protection with ideal diode, Adjustable output-clamp and circuit-breaker with timer, Sh | $3.45 (LTC4364CDE-1#PBF) |
| 24 | LTC4359 | 1 | 4 | 80 | 20 | External, N-Channel, Single | 150µ | Ideal Diode Controller with -40V Reverse Input Protection | $2.10 (LTC4359CDCB#TRPBF) |
| 25 | LTC4353 | 2 | 0 | 18 | 20 | Dual, External, N-Channel | 1.6m | Dual Low Voltage Ideal Diode Controller | $3.45 (LTC4353CDE#PBF) |
| 26 | ADP199 | 1 | 900m | 3.6 | 500m | Load Switch | 3µ | 3.6 V, 500 mA Logic Controlled High-Side Load Switch | $0.32 (ADP199ACBZ-R7) |
| 27 | LTC4415 | 2 | 1.7 | 5.5 | 4 | Dual, Internal, P-Channel | 44µ | Dual 4A Ideal Diodes with Adjustable Current Limit, Imon Outputs, Overcurrent Warning, Thermal Warni | $2.95 (LTC4415EDHC#PBF) |
| 28 | LTC3226 | 1 | 2.5 | 5.5 | 315m | External, P-Channel, Single | 55µ | 2-Cell Supercapacitor Charger with Backup PowerPath Controller | $2.67 (LTC3226EUD#PBF) |
| 29 | ADP198 | 1 | 1.65 | 6.5 | 1 | Load Switch | 2.5µ | Logic Controlled, 1 A, High-Side Load Switch with Reverse Current Blocking | $0.35 (ADP198ACBZ-11-R7) |
| 30 | ADP194 | 1 | 1.1 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch | $0.32 (ADP194ACBZ-R7) |
| 31 | LTC4227 | 2 | 2.9 | 18 | 20 | Dual, External, N-Channel | 3.3m | Dual ideal diode-OR and single hot swap controller, Options for latchoff/auto-Retry and 100ms/1.6ms | $3.41 (LTC4227CGN-1#PBF) |
| 32 | ADP197 | 1 | 1.8 | 5.5 | 3 | Load Switch | 18µ | 5 V, 3 A Logic Controlled High-Side Power Switch | $0.46 (ADP197ACBZ-01-R7) |
| 33 | ADP195 | 1 | 1.1 | 3.6 | 1.1 | Load Switch | 1µ | Logic Controlled, High-Side Power Switch with Reverse Current Blocking | $0.35 (ADP195ACBZ-R7) |
| 34 | ADP191 | 1 | 1.1 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch with Reverse Current Blocking | $0.32 (ADP191ACBZ-R7) |
| 35 | ADP190 | 1 | 1.2 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch with Reverse Current Blocking | $0.33 (ADP190ACBZ-R7) |
| 36 | LTC4358 | 1 | 9 | 26.5 | 5 | Internal, N-Channel, Single | 780µ | 5A Ideal Diode | $2.10 (LTC4358CDE#PBF) |
| 37 | LTC4352 | 1 | 0 | 18 | 20 | External, N-Channel, Single | 1.47m | Low Voltage Ideal Diode Controller with Monitoring | $2.50 (LTC4352CDD#PBF) |
| 38 | LTC4357 | 1 | 9 | 80 | 20 | External, N-Channel, Single | 930µ | Positive High Voltage Ideal Diode Controller | $1.70 (LTC4357CDCB#TRPBF) |
| 39 | LTC4355 | 2 | 9 | 80 | 20 | Dual, External, N-Channel | 2.6m | Positive High Voltage Dual Ideal Diode-OR with Input Supply and Fuse Monitors | $2.50 (LTC4355CDE#PBF) |
| 40 | LTC4416 | 2 | 3.6 | 36 | 20 | Dual, External, P-Channel | 70µ | 36V, Low Loss Dual PowerPath Controllers for Large PFETs | $2.45 (LTC4416EMS#PBF) |
| 41 | LTC4413-2 | 2 | 2.6 | 5.5 | 2.6 | Dual, Internal, P-Channel | 40µ | Dual 2.6A, 2.5V to 5.5V Fast Ideal Diodes in a 3mm x 3mm DFN, Overvoltage Protection Sensor with Dri | $2.25 (LTC4413EDD-2#PBF) |
| 42 | LTC4413-1 | 2 | 2.6 | 5.5 | 2.6 | Dual, Internal, P-Channel | 40µ | Dual 2.6A, 2.5V to 5.5V Fast Ideal Diodes in a 3mm x 3mm DFN | $2.15 (LTC4413EDD-1#PBF) |
| 43 | LTC2952 | 2 | 2.7 | 28 | 5 | Dual, External, P-Channel | 65µ | Push Button PowerPath Controller with Supervisor | $2.95 (LTC2952CF#PBF) |
| 44 | LTC4414 | 1 | 3 | 36 | 20 | External, P-Channel, Single | 36µ | 36V, Low Loss PowerPath Controller for Large PFETs | $1.85 (LTC4414EMS8#PBF) |
| 45 | LTC4413 | 2 | 2.5 | 5.5 | 2.6 | Dual, Internal, P-Channel | 25µ | Dual 2.6A, 2.5V to 5.5V, Ideal Diodes in 3mm × 3mm DFN | $2.15 (LTC4413EDD#PBF) |
| 46 | LTC4354 | 2 | -80 | -4.5 | 10 | Dual, External, N-Channel | 1.2m | Dual Negative Voltage Ideal Diode-OR Controller and Monitor | $1.95 (LTC4354CS8#PBF) |
| 47 | LTC4412HV | 1 | 2.5 | 36 | 5 | External, P-Channel, Single | 18µ | Rugged version of the LTC4412: Vin up to 36V | $1.76 (LTC4412HVIS6#TRPBF) |
| 48 | LTC4411 | 1 | 2.6 | 5.5 | 2.6 | Internal, P-Channel, Single | 40µ | Integrated switch: Replaces power supply OR | $1.66 (LTC4411ES5#TRPBF) |
| 49 | LTC4412 | 1 | 2.5 | 28 | 5 | External, P-Channel, Single | 15µ | Replaces power supply OR | $1.36 (LTC4412ES6#TRPBF) |
| 50 | LTC4410 | 1 | 4.35 | 5.5 | 500m | External, P-Channel, Single | 500µ | Allows faster charging from USB port and complies with USB spec. | $1.26 (LTC4410ES6#TRPBF) |
| 51 | LTC1473L | 2 | 4.75 | 30 | 5 | Dual, External, N-Channel | 100µ | Power path management for multiple DC sources. 3.3V to 10V input. all N-Channel MOSFETs for low los | $3.55 (LTC1473LCGN#PBF) |
| 52 | LTC1479 | 3 | 6 | 28 | 5 | External, N-Channel, Triple | 175µ | Triple PowerPath Controller for Dual Battery Systems and AC/DC | $7.05 (LTC1479CG#PBF) |
| 53 | LTC1473 | 2 | 4.75 | 30 | 5 | Dual, External, N-Channel | 100µ | Dual, High Gate Drive | $3.55 (LTC1473CGN#PBF) |
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