公司的TEA1751T 和TEA1751LT是第三代GreenChip III 开关电源(SMPS)控制器,它把PFC和反激控制器组合在一起.通用的交流电压从70V(AC)到276V(AC),内置的绿色功能在各个功率范围提供高的效率,主哟用在高达250W的开关电源如笔记本电脑适配器 Distinctive features
Integrated PFC and flyback controller.
Universal mains supply operation (70 V (AC) to 276 V (AC)).
Dual boost PFC with accurate maximum output voltage (NXP patented).
High level of integration, resulting in a very low external component count and a cost-effective design.
Green features
On-chip start-up current source.
PFC green features
Valley/zero voltage switching for minimum switching losses (NXP patented).
Frequency limitation to reduce switching losses.
PFC is switched off when a low load is detected at the flyback output.
Flyback green features
Valley switching for minimum switching losses (NXP patented).
Frequency reduction with fixed minimum peak current at low power operation to maintain high efficiency at low output power levels.
Protection features
Safe restart mode for system fault conditions.
Continuous mode protection by means of demagnetization detection for both converters (NXP patented).
UnderVoltage Protection (UVP) (foldback during overload).
Accurate OverVoltage Protection (OVP) for both converters (adjustable for flyback converter).
Mains voltage independent OverPower Protection (OPP)
Open control loop protection for both converters. The open loop protection on the flyback converter is latched on the TEA1751L and safe restart on the TEA1751.
IC overtemperature protection.
Low and adjustable OverCurrent Protection (OCP) trip level for both converters.
General purpose input for latched protection, e.g. to be used for system OverTemperature Protection (OTP).
TEA1751T 应用:
The device can be used in all applications that require an efficient and cost-effective power supply solution up to 250 W. Notebook adapters in particular can benefit from the high level of integration.】