TEA1753T

Микросхема TEA1753T

TEA1753T - HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller, SOP-16

 

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
• Adjustable PFC switch off delay

Green features
On-chip start-up current source
Power down functionality for very low standby power

PFC green features

• Valley/Zero Voltage Switching (ZVS) 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 adjustable 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 with 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 safe restart
• OverTemperature Protection (OTP)
• Low and adjustable OverCurrent Protection (OCP) trip level for both converters
• General-purpose latched protection input for system OverTemperature Protection (OTP) for example