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KP2801
KP2801 High-performance, quasi-resonant boost constant voltage power factor correction controller KP2801 is a high-performance, quasi-resonant (QR) boost constant voltage power factor correction (PFC) controller. The chip can adaptively operate in critical conduction mode (CRM) and discontinuous conduction mode (DCM). At full load, the chip operates in CRM; when the load is reduced, the chip operates in DCM, and the operating frequency is reduced to improve system efficiency. Through optimized CRM/DCM control algorithm and input line voltage feedforward compensation, the chip can easily achieve high power factor (PF) and low input harmonic distortion (THD) performance, even when operating in DCM. In addition, the chip further improves light load efficiency and greatly reduces system standby power consumption through burst mode. KP2801 has built-in high-voltage startup and power supply circuits, and can achieve fast startup and power supply functions without external power supply. In addition, the demagnetization detection technology without auxiliary winding simplifies system design and reduces production costs. KP2801 integrates complete protection functions, including: VDD undervoltage protection (UVLO), VDD overvoltage protection (VDD OVP), input undervoltage protection (BOP), output undervoltage protection (UVP), two-level output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), abnormal overcurrent protection (AOCP), overtemperature protection (OTP), and pin open/short circuit protection.
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- Product Description
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- Commodity name: KP2801
- 封装: SOP-8
- 品牌: Biyi Microelectronics
KP2801 High-performance, quasi-resonant boost constant voltage power factor correction controller KP2801 is a high-performance, quasi-resonant (QR) boost constant voltage power factor correction (PFC) controller. The chip can adaptively operate in critical conduction mode (CRM) and discontinuous conduction mode (DCM). At full load, the chip operates in CRM; when the load is reduced, the chip operates in DCM, and the operating frequency is reduced to improve system efficiency. Through optimized CRM/DCM control algorithm and input line voltage feedforward compensation, the chip can easily achieve high power factor (PF) and low input harmonic distortion (THD) performance, even when operating in DCM. In addition, the chip further improves light load efficiency and greatly reduces system standby power consumption through burst mode. KP2801 has built-in high-voltage startup and power supply circuits, and can achieve fast startup and power supply functions without external power supply. In addition, the demagnetization detection technology without auxiliary winding simplifies system design and reduces production costs. KP2801 integrates complete protection functions, including: VDD undervoltage protection (UVLO), VDD overvoltage protection (VDD OVP), input undervoltage protection (BOP), output undervoltage protection (UVP), two-level output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), abnormal overcurrent protection (AOCP), overtemperature protection (OTP), and pin open/short circuit protection.
Main Features
• Built-in 700V high-voltage power supply circuit, start-up time <200ms
• Optimized light load efficiency and standby power consumption
• Power factor >0.95, THD<8%
• Optimized light load THD
• Optimized dynamic performance
• Supports single-winding inductor
• Built-in ±2% (@Tj=25℃) constant voltage reference voltage
• Package type SOP-8
• Internal protection functions:
• VDD overvoltage/undervoltage protection (VDD OVP/UVLO)
• Input undervoltage protection (BOP)
• Output undervoltage protection (UVP)
• Two-stage output overvoltage protection (OVP)
• Cycle-by-cycle current limit (OCP)
• Abnormal overcurrent protection (AOCP)
• Overtemperature protection (OTP)
• Pin open/short circuit protection
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Room 819, Dongmei Building, Xiangnan Three District, Minqiang Community, Minzhi Street, Longhua District, Shenzhen
