KPE2593 is a current mode switching power supply controller for half-bridge LLC resonant converter.
1. Main features and specifications
■ Integrated a 650V Half-Bridge Driver
■ Maximum Switching Frequency: 350kHz
■ Adopting current mode control technology
■ Integrated self-adjusting dead time function
■ Programmable mid-load frequency reduction mode
■ Ultra low startup and working current, as well as light load hiccup mode control
■ Integrated AC power-off detection and X capacitor discharge function
■ Integrate various protection functions, such as VDD overvoltage/undervoltage protection, input AC overvoltage/brownout protection, output overvoltage/overload protection, resonant cavity overcurrent protection/capacitive mode protection, over temperature protection, etc.

2. Main application areas
■ Industrial power supply
■ High power adapter power supply
■ Server power supply
■ High power lighting power supply
■ TV board power supply, etc

3. Main advantages and characteristics compared to competitors
■ Integrate adaptive dead time control to improve system efficiency and reliability, while simplifying peripheral application circuits
■ The combination control of circuit inner loop and voltage outer loop has better stability and dynamic response compared to traditional single voltage loop control
■ The resonant cavity current sampling circuit can provide periodic overcurrent protection, limit the stress of the half bridge circuit, and effectively prevent the system from entering the capacitive mode, greatly improving the reliability of the half bridge resonant circuit
■ The combination of frequency reduction mode and burst mode greatly optimizes the working efficiency of the system at medium and light loads, while optimizing the output ripple of the system at light loads and suppressing audible noise
■ The ultra-low power design and the X-CAP discharge function can greatly reduce the standby power consumption of the system