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TPS56221器件是一款高效的大電流同步降壓轉換器,可由4.5V至14V范圍內的電源供電運行。當負載電流高達25A時,該器件可產生低至0.6V的輸出電壓。集成的NexFET功率MOSFET尺寸小且易于使用。
該器件可通過電壓前饋補償實施電壓模式控制,能夠在輸入電壓變化時間即做響應。
TPS56221采用22引腳散熱增強型PQFN(DQP)PowerPAD封裝。
該器件支持高度的設計靈活性,可提供各種用戶可編程功能,其中包括軟啟動,過流保護(OCP)電平以及環路補償.ODP電平可通過ILIM引腳與電路接地之間連接的單個外部電阻進行編程。在初始上電排序過程中,該器件會進入校準周期,測量ILIM引腳電壓,并設置內部OCP電壓。在工作期間,器件可在通電時通過將可編程OCP電壓與低側FET兩端的壓降進行比較來判斷是否為過狀況。之后,器件會進入關斷/重啟周期,直到故障消除為止。
所有商標均為其各自所有者的財產。
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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 |
? |
TPS56221 | TPS53353 | TPS53355 | TPS543B20 | TPS543C20 | TPS544C25 | TPS548B22 | TPS548D22 | TPS56121 |
---|---|---|---|---|---|---|---|---|
4.5 ? ? | 1.5 ? ? | 1.5 ? ? | 4 ? ? | 4 ? ? | 4.5 ? ? | 1.5 ? ? | 1.5 ? ? | 4.5 ? ? |
14 ? ? | 15 ? ? | 15 ? ? | 19 ? ? | 16 ? ? | 18 ? ? | 18 ? ? | 16 ? ? | 14 ? ? |
0.6 ? ? | 0.6 ? ? | 0.6 ? ? | 0.6 ? ? | 0.6 ? ? | 0.5 ? ? | 0.6 ? ? | 0.6 ? ? | 0.6 ? ? |
12 ? ? | 5.5 ? ? | 5.5 ? ? | 5.5 ? ? | 5.5 ? ? | 5 ? ? | 5.5 ? ? | 5.5 ? ? | 12 ? ? |
25 ? ? | 20 ? ? | 30 ? ? | 25 ? ? | 40 ? ? | 30 ? ? | 25 ? ? | 40 ? ? | 15 ? ? |
1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? | 1 ? ? |
300 ? ? | 250 ? ? | 250 ? ? | 300 ? ? | 300 ? ? | 200 ? ? | 425 ? ? | 425 ? ? | 300 ? ? |
1000 ? ? | 1000 ? ? | 1000 ? ? | 2000 ? ? | 2000 ? ? | 1000 ? ? | 1050 ? ? | 1050 ? ? | 1000 ? ? |
2.5 ? ? | 0.32 ? ? | 0.32 ? ? | 3 ? ? | 4.3 ? ? | 7.7 ? ? | 2 ? ? | 2 ? ? | 2.5 ? ? |
Enable Light Load Efficiency Pre-Bias Start-Up Synchronous Rectification ? ? | 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 Enable Light Load Efficiency Output Discharge Power Good Pre-Bias Start-Up Remote Sense Synchronous Rectification UVLO Adjustable ? ? | Adjustable Current Limit Enable Power Good Pre-Bias Start-Up Synchronous Rectification ? ? |
Voltage Mode ? ? | D-CAP ? ? | D-CAP ? ? | Current Mode ? ? | Current Mode ? ? | Voltage Mode ? ? | D-CAP3 ? ? | D-CAP3 ? ? | Voltage Mode ? ? |
93 ? ? | 90 ? ? | 90 ? ? | 70 ? ? | 70 ? ? | 80 ? ? | 80 ? ? | 80 ? ? | 93 ? ? |
-40 to 125 ? ? | -40 to 85 ? ? | -40 to 85 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? |
Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? |
LSON-CLIP ? ? | LSON-CLIP ? ? | LSON-CLIP ? ? | LQFN-CLIP ? ? | LQFN-CLIP ? ? | LQFN-CLIP ? ? | LQFN-CLIP ? ? | LQFN-CLIP ? ? | LSON-CLIP ? ? |