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KP2591(A)
KP2591(A) Half-bridge LLC resonant switching power supply controller KP2591(A) is a resonant switching power supply controller based on a half-bridge LLC resonant converter. The chip integrates high-voltage startup, AC power-off detection, and X capacitor discharge functions to meet the requirements of fast startup and ultra-low standby power consumption. KP2591(A) integrates a half-bridge driver and can directly output a 50% duty cycle complementary drive. The chip has a built-in high-precision VCO oscillator with a maximum operating frequency of 350kHz. The chip integrates an adaptive dead-time control function to ensure zero-voltage switching (ZVS) of the power switching tubes, improving system efficiency; at the same time, the chip integrates a capacitive region protection function to avoid bridge arm shoot-through and hard switching, improving system reliability. In addition, the chip can enter low standby mode through an external signal to reduce system standby power consumption. KP2591(A) integrates complete protection functions, including: VDD overvoltage/undervoltage protection (VDD OVP/UVLO), VBT undervoltage protection (VBT UVP), AC overvoltage and input undervoltage protection (LOVP & HV/BR BOP), overload protection (OLP), resonant cavity overcurrent protection (CBC OCP/SOCP), output overcurrent protection (OCP), capacitive region protection, SEL pin open/short circuit protection, and overtemperature protection (OTP).
Category：
- Product Description
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- Commodity name: KP2591(A)
- 封装: SOP-16
- 品牌: Biyi Microelectronics
KP2591(A) Half-bridge LLC resonant switching power supply controller KP2591(A) is a resonant switching power supply controller based on a half-bridge LLC resonant converter. The chip integrates high-voltage startup, AC power-off detection, and X capacitor discharge functions to meet the requirements of fast startup and ultra-low standby power consumption. KP2591(A) integrates a half-bridge driver and can directly output a 50% duty cycle complementary drive. The chip has a built-in high-precision VCO oscillator with a maximum operating frequency of 350kHz. The chip integrates an adaptive dead-time control function to ensure zero-voltage switching (ZVS) of the power switching tubes, improving system efficiency; at the same time, the chip integrates a capacitive region protection function to avoid bridge arm shoot-through and hard switching, improving system reliability. In addition, the chip can enter low standby mode through an external signal to reduce system standby power consumption. KP2591(A) integrates complete protection functions, including: VDD overvoltage/undervoltage protection (VDD OVP/UVLO), VBT undervoltage protection (VBT UVP), AC overvoltage and input undervoltage protection (LOVP & HV/BR BOP), overload protection (OLP), resonant cavity overcurrent protection (CBC OCP/SOCP), output overcurrent protection (OCP), capacitive region protection, SEL pin open/short circuit protection, and overtemperature protection (OTP).
Main Features
• High-precision VCO control
• Supports maximum frequency 350kHz
• Integrated 650V half-bridge driver
• Integrated high-voltage startup function
• Adaptive dead-time control
• Configurable soft-start function
• Integrated AC power-off detection and X capacitor discharge function
• Supports PFC-less design applications
• Configurable normal operating mode or low standby mode
• Package type SOP-16
• Integrated comprehensive protection functions:
• VDD overvoltage/undervoltage protection (VDD OVP/UVLO)
• VBT undervoltage protection (VBT UVP)
• HV pin input undervoltage protection (HV BOP)
• BR pin configurable input undervoltage protection (BR BOP)
• AC overvoltage protection (LOVP)
• Overload protection (OLP)
• Resonant tank current cycle-by-cycle overcurrent protection (CBC OCP)
• Output overcurrent protection (OCP)
• Capacitive region protection
• SEL pin open/short circuit protection
• Overtemperature protection (OTP)
Product Model
Topology
Maximum Power (W)
Operating Mode
Output Characteristics
HV Withstand Voltage (V)
Startup Method
Output Constant Voltage Accuracy
VDDmax (V)
Maximum Frequency (kHz) Package
Features
KP2591
LLC
1500
Single Voltage Loop Control
CV
650
High Voltage Startup ±1.5%
30
350 SOP-16 Latch
KP2591A
LLC
1500
Single Voltage Loop Control
CV
650
High Voltage Startup
±1.5%
30
350 SOP-16 Self-recovery
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