PowerPath、理想ダイオード（Ideal Diodes）、負荷スイッチ
アナログ・デバイセズのPowerPath、理想ダイオード・コントローラ（Ideal Diodes）、負荷スイッチ、負荷スイッチは、電源に戻る逆電流と電源間のシュートスルー電流を最小限に抑えることで電源を保護します。電源の選択は、最高電圧または最高優先度によって行うことができます。
最高電圧の選択では、ダイオードOR構成で理想ダイオードが使用されます。アプリケーションには、冗長電源OR接続、入力ブラウンアウト中の電源停止、バッテリ逆入れ保護があります。最高優先度による選択では、優先されたPowerPathコントローラによって最も汎用的で柔軟なソリューションが提供されます。プライオリタイザによって有効な電圧ウィンドウ中で最も優先度の高い入力からシステムに電力が供給されます。アプリケーションは、バッテリ装備ポータブル製品、容量停止のメモリ・モジュール、メイン電源および補助電源のあるサーバー・サブシステムで発生します。負荷スイッチは、設計スペースが限られている場合に逆電流保護を可能にします。
最高電圧の選択では、ダイオードOR構成で理想ダイオードが使用されます。アプリケーションには、冗長電源OR接続、入力ブラウンアウト中の電源停止、バッテリ逆入れ保護があります。最高優先度による選択では、優先されたPowerPathコントローラによって最も汎用的で柔軟なソリューションが提供されます。プライオリタイザによって有効な電圧ウィンドウ中で最も優先度の高い入力からシステムに電力が供給されます。アプリケーションは、バッテリ装備ポータブル製品、容量停止のメモリ・モジュール、メイン電源および補助電源のあるサーバー・サブシステムで発生します。負荷スイッチは、設計スペースが限られている場合に逆電流保護を可能にします。
製品セレクション・テーブル
デザイン・ノート
- Active Rectifier Controller with Ultrafast Transient Response and Low Power Dissipation
- DN1036 - 異なる電源を使用する電流分担コントローラ
- DN160 - Dual PowerPath™ Controller Simplifi es Power Management
- DN356 - Dual Monolithic Ideal Diode Manages Multiple Power Inputs
- DN519 - アクティブ・ブリッジ整流器による、PoE 監視カメラの放熱削減
- DN498 - スーパーキャパシタによる電源バックアップ・システムが携帯電子機器の 電源喪失時に揮発性データを保護
- DN487 - RAIDシステムのデータ喪失を防ぐスーパーキャパシタをベースにした電源パックアップ
- DN485 - エネルギーの有効利用でスーパーキャパシタによる停電時運転継続 アプリケーションの稼働時間を40%改善
- DN450 - 停電時運転継続用バックアップ・バッテリを置き換えることができるスーパーキャパシタ
- DN444 - 電源の誤配線に対して保護する理想ダイオード
- DN320 新型ICによるUSBからのバッテリ充電の簡素化
- DN1003 - Ideal Diode Controller Eliminates Energy Wasting Diodes in Power OR-ing Applications
- DN1012 - ソーラーパネルの性能を上げてサイズを縮小
- DN386 - 電源OR結合アプリケーションからエネルギーを浪費するダイオードを取り除く、理想ダイオード・コントローラ
- DN363 - OR結合ダイオードをMOSFETで置き換えて発熱とスペースを低減
- DN361 - 簡単なバッテリ回路によるPower over Ethernet(PoE)のピーク電流の増強
Technical Articles Page
- High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245
- Low IQ Ideal Diode Controller with Reverse Input Protection for Automotive and Telecom Power Solutions
- Negative Voltage Ideal Diodes (Diode-OR Controllers)
- LTspice: Using Time-Dependent Exponential Sources to Model Transients
- Primer on PowerPath Controllers, Ideal Diodes & Prioritizers
- Using a Current Sharing Controller with Non-Redundant Supplies
- 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
- Single-IC Supercapacitor-Based Power Supply Backup Solution
- LT4321/LT4275 LTPoE++/PoE+/PoE PD コントローラTechClip
- Meet Green Standards in 24VAC and 12VAC Lighting Systems: Replace Halogen Bulbs with LEDs Driven by High Power Factor, High Efficiency Converter
- Active Bridge Rectifiers Reduce Heat Dissipation within PoE Security Cameras
- The Dreaded "File Test" on an LT4320 Ideal Diode Bridge Controller
- 0V to 18V Ideal Diode Controller Saves Watts and Space over Schottky
- Ideal Diode Betters a Schottky by a Factor of Four in Power and Space Consumption
アプリケーション・ノート
PowerPath、最適なダイオード、負荷スイッチ
| 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 | LTC4373 | 1 | 2.5 | 80 | 20 | External, N-Channel, Single | 5µ | Low Quiescent Current Ideal Diode Controller | - |
| 2 | LTC4372 | 1 | 2.5 | 80 | 20 | External, N-Channel, Single | 5µ | Low Quiescent Current Ideal Diode Controller | - |
| 3 | LTC4421 | 2 | 3 | 36 | 20 | Dual, N-Channel | 530µ | High Power Prioritized PowerPath Controller | $3.95 (LTC4421CG#PBF) |
| 4 | LTC4376 | 1 | 4 | 40 | 7 | Internal, N-Channel, Single | 150µ | 7A Ideal Diode with Reverse Input Protection | $2.55 (LTC4376CDHD#PBF) |
| 5 | LTC4418 | 2 | 2.5 | 40 | 5 | Dual, External, P-Channel | 26µ | Dual Channel Prioritized PowerPath Controller | $2.45 (LTC4418CUF#PBF) |
| 6 | LT8672 | 1 | 3 | 42 | 20 | External, N-Channel, Single | 20µ | Active Rectifier Controller with Reverse Protection | $1.95 (LT8672EDDB#TRPBF) |
| 7 | 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) |
| 8 | LTC4419 | 2 | 1.8 | 18 | 500m | Dual, Internal, P-Channel | 3.6µ | 18V Dual Input Micropower PowerPath Prioritizer | $2.75 (LTC4419CDD#PBF) |
| 9 | 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) |
| 10 | LTC4371 | 2 | -500 | -4.5 | 20 | Dual, External, N-Channel | 300µ | Dual Negative Voltage Ideal Diode-OR Controller and Monitor | $2.50 (LTC4371CDD#PBF) |
| 11 | 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) |
| 12 | 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) |
| 13 | 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) |
| 14 | ADP1290 | 1 | 2.3 | 13.2 | 2 | Load Switch | 15µ | 12 V, 2 A Logic Controlled High-Side Power Switch | $0.88 (ADP1290ACBZ-R7) |
| 15 | LTC4229 | 1 | 2.9 | 18 | 20 | External, N-Channel, Single | 2.53m | Ideal Diode and Hot Swap Controller | $2.95 (LTC4229CG#PBF) |
| 16 | LT4321 | 2 | 20 | 80 | 20 | Dual Bridges with External N-Channel | 500µ | PoE Ideal Diode Bridge Controller | $1.48 (LT4321IUF#PBF) |
| 17 | ADP1190A | 4 | 1.4 | 3.6 | 500m | Load Switch | - | Integrated 500 mA Load Switch with Quad Signal Switch | $0.60 (ADP1190AACBZ-R7) |
| 18 | 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) |
| 19 | LT4320 | 1 | 9 | 72 | 20 | Single Bridge with External N-Channel | 1.3m | Ideal Diode Bridge Controller - DC to 60Hz | $2.95 (LT4320IDD#PBF) |
| 20 | 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) |
| 21 | LTC4417 | 3 | 2.5 | 36 | 5 | External, P-Channel, Triple | 28µ | Prioritized PowerPath Controller with -42V Reverse Input Protection | $3.05 (LTC4417CUF#PBF) |
| 22 | 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) |
| 23 | ADP1190 | 4 | 1.4 | 3.6 | 500m | Load Switch | - | Integrated 500 mA Load Switch with Quad Signal Switch | $0.60 (ADP1190ACBZ-R7) |
| 24 | 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) |
| 25 | LTC4370 | 2 | 0 | 18 | 20 | Dual, External, N-Channel | 2.25m | Two-Supply Diode-OR Current Balancing Controller | $4.95 (LTC4370CDE#PBF) |
| 26 | 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) |
| 27 | LTC4359 | 1 | 4 | 80 | 20 | External, N-Channel, Single | 150µ | Ideal Diode Controller with -40V Reverse Input Protection | $2.10 (LTC4359CDCB#TRPBF) |
| 28 | LTC4353 | 2 | 0 | 18 | 20 | Dual, External, N-Channel | 1.6m | Dual Low Voltage Ideal Diode Controller | $3.45 (LTC4353CDE#PBF) |
| 29 | ADP199 | 1 | 900m | 3.6 | 500m | Load Switch | 3µ | 3.6 V, 500 mA Logic Controlled High-Side Load Switch | $0.32 (ADP199ACBZ-R7) |
| 30 | 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) |
| 31 | LTC3226 | 1 | 2.5 | 5.5 | 315m | External, P-Channel, Single | 55µ | 2-Cell Supercapacitor Charger with Backup PowerPath Controller | $2.67 (LTC3226EUD#PBF) |
| 32 | 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) |
| 33 | ADP194 | 1 | 1.1 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch | $0.32 (ADP194ACBZ-R7) |
| 34 | 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) |
| 35 | 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) |
| 36 | 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) |
| 37 | ADP191 | 1 | 1.1 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch with Reverse Current Blocking | $0.32 (ADP191ACBZ-R7) |
| 38 | ADP190 | 1 | 1.2 | 3.6 | 500m | Load Switch | - | Logic Controlled, High-Side Power Switch with Reverse Current Blocking | $0.33 (ADP190ACBZ-R7) |
| 39 | LTC4358 | 1 | 9 | 26.5 | 5 | Internal, N-Channel, Single | 780µ | 5A Ideal Diode | $2.10 (LTC4358CDE#PBF) |
| 40 | LTC4352 | 1 | 0 | 18 | 20 | External, N-Channel, Single | 1.47m | Low Voltage Ideal Diode Controller with Monitoring | $2.50 (LTC4352CDD#PBF) |
| 41 | LTC4357 | 1 | 9 | 80 | 20 | External, N-Channel, Single | 930µ | Positive High Voltage Ideal Diode Controller | $1.70 (LTC4357CDCB#TRPBF) |
| 42 | 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) |
| 43 | LTC4416 | 2 | 3.6 | 36 | 20 | Dual, External, P-Channel | 70µ | 36V, Low Loss Dual PowerPath Controllers for Large PFETs | $2.45 (LTC4416EMS#PBF) |
| 44 | 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) |
| 45 | 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) |
| 46 | LTC2952 | 2 | 2.7 | 28 | 5 | Dual, External, P-Channel | 65µ | Pushbutton PowerPath Controller with Supervisor | $2.95 (LTC2952CF#PBF) |
| 47 | LTC4414 | 1 | 3 | 36 | 20 | External, P-Channel, Single | 36µ | 36V, Low Loss PowerPath Controller for Large PFETs | $1.85 (LTC4414EMS8#PBF) |
| 48 | 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) |
| 49 | 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) |
| 50 | LTC4412HV | 1 | 2.5 | 36 | 5 | External, P-Channel, Single | 18µ | Rugged version of the LTC4412: Vin up to 36V | $1.76 (LTC4412HVIS6#TRPBF) |
| 51 | LTC4411 | 1 | 2.6 | 5.5 | 2.6 | Internal, P-Channel, Single | 40µ | Integrated switch: Replaces power supply OR | $1.66 (LTC4411ES5#TRPBF) |
| 52 | LT4351 | 1 | 1.2 | 18 | 10 | External, N-Channel | 1.41m | MOSFET Diode-OR Controller | $2.50 (LT4351CMS#PBF) |
| 53 | LTC4412 | 1 | 2.5 | 28 | 5 | External, P-Channel, Single | 15µ | Replaces power supply OR | $1.36 (LTC4412ES6#TRPBF) |
| 54 | 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) |
| 55 | 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) |
| 56 | LTC1479 | 3 | 6 | 28 | 5 | External, N-Channel, Triple | 175µ | Triple PowerPath Controller for Dual Battery Systems and AC/DC | $7.05 (LTC1479CG#PBF) |
| 57 | LTC1473 | 2 | 4.75 | 30 | 5 | Dual, External, N-Channel | 100µ | Dual, High Gate Drive | $3.55 (LTC1473CGN#PBF) |
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