NXP | TEA1750T/N1/DG,518

The TEA1750T/N1/DG,518 is a Third generation (GreenChip III) SMPS controller IC. It combines a controller for Power Factor Correction (PFC) and a flyback controller.

The high level of integration allows the design for cost-effective power supply with a very low number of external components.

Features:

• Integrated PFC and flyback controller
• Universal mains supply operation (70 V AC to 276 V AC)
• High level of integration
• On-chip start-up current source
• Valley/zero voltage switching for minimum switching losses
• Frequency limitation to reduce switching losses
• Burst mode operation if a low load is detected at the flyback output
• Valley switching for minimum switching losses
• Frequency reduction with fixed minimum peak current
• Safe restart mode for system fault conditions
• Continuous mode protection by means of demagnetization detection for both converters 
• UnderVoltage Protection (UVP) (foldback during overload)
• Accurate OverVoltage Protection (OVP) for both converters 
• Open control loop protection for both converters
• IC OverTemperature Protection (OTP)
• Low and adjustable OverCurrent Protection (OCP) trip level for both converters
• Soft (re)start for both converters
• Soft stop PFC to minimize audible noise
• Mains UnderVoltage Protection (UVP)/ brownout protection
• General purpose input for latched protection, e.g. to be used for system
• Overtemperature protection

Applications:

• Battery chargers for cellular phones
• Standby supply for TV and desktop PC
• Power supply for White Goods applications