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TPS51120是一款高度复杂的双同步降压控制器。它是一款全功能控制器,设计用于直接从三节或四节锂离子电池供电,并为笔记本电脑系统中的所有下游电路提供高功率和5V和/或3.3V待机调节。大电流,100 mA,5 V或3.3 V板载线性稳压器具有SMPS无故障切换功能,可在待机状态下独立保持活动状态。伪恒定频率自适应导通时间控制方案支持全范围的电流模式操作,包括简化的环路补偿,陶瓷输出电容以及在轻负载条件下无缝转换到降频操作。针对SP-CAP或POSCAP输出电容器优化的可选D-CAP模式操作允许进一步减少外部补偿部件。动态UVP支持VIN线下垂,无需通过击中5-V UVP来锁定。在UVLO,UVP和OCP,OTP或VIN损失期间,输出电压节点处不会出现负电压。
TPS51120 32引脚QFN封装的额定温度范围为?40°C至85°C环境温度。
Vin (Min) (V) |
Vin (Max) (V) |
Vout (Min) (V) |
Vout (Max) (V) |
Iout (Max) (A) |
Regulated Outputs (#) |
Number of Phases |
Switching Frequency (Min) (kHz) |
Switching Frequency (Max) (kHz) |
Iq (Typ) (mA) |
Features |
Duty Cycle (Max) (%) |
Operating Temperature Range (C) |
Rating |
Package Group |
Control Mode |
TPS51120 | TPS51123 | TPS51124 | TPS51125A | TPS51220 | TPS51220A |
---|---|---|---|---|---|
4.5 | 5.5 | 3 | 5.5 | 4.5 | 4.5 |
28 | 28 | 28 | 28 | 28 | 32 |
1 | 2 | 0.76 | 2 | 1 | 1 |
5.5 | 5.5 | 5.5 | 5.5 | 12 | 12 |
20 | 20 | 15 | 20 | 20 | 20 |
2 | 2 | 2 | 2 | 2 | 2 |
1 | 1 | 1 | 1 | 1 | 1 |
180 | 200 | 240 | 300 | 200 | 200 |
500 | 460 | 420 | 460 | 1000 | 1000 |
0.75 | 0.55 | 0.35 | 0.55 | 1.3 | 1.3 |
Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Frequency Synchronization Light Load Efficiency Phase Interleaving Power Good Synchronous Rectification | Enable Frequency Synchronization Light Load Efficiency Phase Interleaving Power Good Synchronous Rectification |
88 | 93 | 88 | 93 | 99 | 99 |
-40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
VQFN | VQFN | VQFN | VQFN | VQFN | QFN WQFN |
Current Mode D-CAP | D-CAP | D-CAP | D-CAP | Current Mode D-CAP | |