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UCCx8C4x系列是高性能,电流模式PWM控制器。 UCCx8C4x是增强型BiCMOS版本,与业界标准UCx84xA系列和UCx84x系列PWM控制器具有引脚对引脚兼容性。 BiCMOS技术提供更低的功耗,以提高效率以及更快的电流检测和振荡器频率。此外,作为UCCx8C40和UCCx8C41提供7 V的较低启动电压版本,用于电池系统。 UCC28C4x系列的工作温度范围为-40°C至105°C,UCC38C4x系列的工作温度范围为0°C至70°C。
提供控制固定频率的必要功能,峰值电流模式电源,该系列具有以下性能优势。该器件提供高达1 MHz的高频工作,适用于高速应用。与UCx84x系列相比,经过调整的放电电流可以更精确地编程最大占空比和死区时间限制。降低的启动和工作电流可最大限度地降低启动损耗和低工作功耗,从而提高效率。该器件还具有35 ns的快速电流检测输出延迟时间,可在电源开关上实现出色的过载保护,并具有±1 A的峰值输出电流能力,并可改善直接驱动大型外部MOSFET的上升和下降时间。
UCC38C4x系列采用8引脚VSSOP(DGK),8引脚SOIC(D)和8引脚PDIP(P)封装。
Topology |
Control Method |
Vin (Min) (V) |
Vin (Max) (V) |
Frequency (Max) (kHz) |
UVLO Thresholds On/Off (V) |
Duty Cycle (Max) (%) |
Gate Drive (Typ) (A) |
Features |
Rating |
Operating Temperature Range (C) |
Pin/Package |
UCC28C42 | UCC28C40 | UCC28C41 | UCC28C43 | UCC28C44 | UCC28C45 |
---|---|---|---|---|---|
Boost Buck Buck-Boost Flyback Forward | Boost Buck Buck-Boost Flyback Forward | Boost Buck Buck-Boost Flyback Forward | Boost Buck Buck-Boost Flyback Forward | Boost Buck Buck-Boost Flyback Forward | Boost Buck Buck-Boost Flyback Forward |
Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode | Peak Current Mode |
14.5 | 7 | 7 | 8.4 | 14.5 | 8.4 |
20 | 20 | 20 | 20 | 20 | 20 |
1000 | 1000 | 1000 | 1000 | 1000 | 1000 |
14.5/9 | 7/6.6 | 7/6.6 | 8.4/7.6 | 14.5/9 | 8.4/7.6 |
100 | 100 | 50 | 100 | 50 | 50 |
1 | 1 | 1 | 1 | 1 | 1 |
Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Programmable Max Duty Cycle |
Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
-40 to 105 | -40 to 105 -40 to 85 | -40 to 105 | -40 to 105 | -40 to 105 -40 to 85 | -40 to 105 |
8PDIP 8SOIC 8VSSOP | 8PDIP 8SOIC 8VSSOP | 8SOIC 8VSSOP | 8PDIP 8SOIC 8VSSOP | 8PDIP 8SOIC 8VSSOP | 8PDIP 8SOIC 8VSSOP |
型号:UCC28C42DR 封装:SOIC8_150MIL
品牌:TI 描述:升压,反激,正激转换器 稳压器 正 输出 升压,升压/降压 DC DC 切换控制器 IC 8-SOIC
金额:¥5.45684
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