TPS548D22デバイスは、小型のシングル降圧型コンバータで、アダプティブ・オンタイム、D-CAP3モード制御を使用しています。高精度、高効率、高速な過渡応答、使いやすさ、外付け部品数の少なさ、容積の削減が要求される電源システム用に設計されています。
このデバイスには、完全な差動感知の、ハイサイド・オン抵抗が2.9mΩ、ローサイド・オン抵抗が1.2mΩであるTIの統合FETが搭載されています。また、0.5%、0.9Vの高精度の基準電圧が搭載されており、-40℃～+125℃までの周囲温度に対応しています。競争力の高い特長として、外付け部品数が非常に少ないこと、正確な負荷レギュレーションおよびライン・レギュレーション、オートスキップまたはFCCMモードでの動作、内部的なソフトスタート制御が挙げられます。
TPS548D22デバイスは、7mm×5mmの40ピンLQFN-CLIP (RVF)パッケージで供給されます(RoHS指令対象外)。
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| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iout (Max) (A) |
| Regulated Outputs (#) |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Control Mode |
| Duty Cycle (Max) (%) |
| Operating Temperature Range (C) |
| Rating |
| Package Group |
| TPS548D22 | TPS53353 | TPS53355 | TPS543B20 | TPS543C20 | TPS544C25 | TPS548B22 | TPS548D21 | TPS549D22 | TPS56121 | TPS56221 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1.5 | 1.5 | 1.5 | 4 | 4 | 4.5 | 1.5 | 1.5 | 1.5 | 4.5 | 4.5 |
| 16 | 15 | 15 | 19 | 16 | 18 | 18 | 16 | 16 | 14 | 14 |
| 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
| 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5 | 5.5 | 5.5 | 5.5 | 12 | 12 |
| 40 | 20 | 30 | 25 | 40 | 30 | 25 | 40 | 40 | 15 | 25 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 425 | 250 | 250 | 300 | 300 | 200 | 425 | 425 | 315 | 300 | 300 |
| 1050 | 1000 | 1000 | 2000 | 2000 | 1000 | 1050 | 1050 | 1125 | 1000 | 1000 |
| 2 | 0.32 | 0.32 | 3 | 4.3 | 7.7 | 2 | 2 | 2 | 2.5 | 2.5 |
|
Adjustable Current Limit Enable Light Load Efficiency Output Discharge Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification UVLO Adjustable |
Adjustable Current Limit Enable Light Load Efficiency Power Good Pre-Bias Start-Up Synchronous Rectification |
Adjustable Current Limit Enable Light Load Efficiency Power Good Pre-Bias Start-Up Synchronous Rectification |
Enable Frequency Synchronization Over Current Protection Phase Interleaving Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification UVLO Adjustable |
Adjustable Current Limit Enable Frequency Synchronization N/A Over Current Protection Phase Interleaving Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification |
Adjustable Current Limit Dynamic Voltage Scaling Enable Frequency Synchronization PMBus Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification Tracking UVLO Adjustable Voltage Margining |
Adjustable Current Limit Enable Light Load Efficiency Output Discharge Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification UVLO Adjustable |
Adjustable Current Limit Dynamic Voltage Scaling Enable Light Load Efficiency Output Discharge Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification Tracking UVLO Adjustable Voltage Margining |
Adjustable Current Limit Dynamic Voltage Scaling Enable Light Load Efficiency PMBus Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification Tracking UVLO Adjustable Voltage Margining |
Adjustable Current Limit Enable Power Good Pre-Bias Start-Up Synchronous Rectification |
Enable Light Load Efficiency Pre-Bias Start-Up Synchronous Rectification |
| D-CAP3 | D-CAP | D-CAP | Current Mode | Current Mode | Voltage Mode | D-CAP3 | D-CAP3 | D-CAP3 | Voltage Mode | Voltage Mode |
| 80 | 90 | 90 | 70 | 70 | 80 | 80 | 80 | 80 | 93 | 93 |
| -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 |
