NXP's AC-DC controller TEA1721FT with integrated power switch. TEA1721 is a small-sized, low-cost switch mode power supply (SMPS) controller IC suitable for low-power applications (up to 5 W) and can be directly operated using rectified mains power. This device integrates a high voltage power switch (700 V) and is optimized for flyback converter topology, which can improve efficiency over the full load range with extremely low no-load power consumption. The device is equipped with a built-in startup circuit, which can be directly started using rectified mains voltage without the need for any external discharge circuit. A hiccup frequency of 1750 Hz can achieve no-load power consumption below 30 mW under high mains input conditions. Suitable for 5 W applications, integrated power MOSFET flyback controller with high voltage startup, f~burst=1750 Hz
NXP's AC-DC controller TEA1721FT with integrated power switch features:
- Low power switching power supply controller, suitable for applications with a maximum power of 5 W
Adopting a 700 V high-voltage power switch, suitable for operation under global mains power
The output voltage is controlled through primary detection, without the need for optocouplers or secondary feedback circuits
Minimize audio noise in various working modes to the greatest extent possible
Compliant with USB battery charging and Energy Star 2.0 standards
Equipped with frequency jitter function and lower EMI
No load power consumption below 30 mW
Provide energy-saving mode with extremely low power supply current consumption under no-load conditions
The current consumption of the built-in high-voltage starting circuit during normal switch operation is zero
Adopting SO7 packaging that is halogen-free and compliant with RoHS standards
The feedback control pin (FB) and power supply pin have overvoltage protection (OVP), which automatically restarts after protection
The IC power pin has undervoltage lockout (UVLO) protection function
Over temperature protection (OTP)
By reducing the peak current at zero and low output voltages, soft start is achieved
The demagnetization protection function ensures operation in discontinuous conduction mode
The feedback control (FB) pin has open circuit and short circuit protection functions - NXP AC-DC Controller TEA1721FT with Integrated Power Switch Application:
White goods
Industry
smart meter
Mobile USB charger
universal adapter
