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KP2822
KP2822 Interleaved Critical Conduction Mode Boost PFC Controller KP2822 is a two-phase interleaved critical conduction mode (CRM) boost constant voltage power factor correction (PFC) controller. The two-phase interleaved structure reduces the current stress of each phase, disperses thermal stress, reduces inductor volume, and facilitates system design. The chip integrates a two-phase interleaved clock control logic, which reliably achieves a 180° phase difference between the two channels under all operating conditions, significantly reduces input and output current ripple, doubles the ripple frequency, effectively reduces the size of the EMI filter, improves system reliability, and reduces the output capacitance requirement. The two-phase circuits controlled by 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 to improve system efficiency. The chip also uses an optimized CRM/DCM control algorithm and input line voltage feedforward to easily achieve high power factor (PF) and low input harmonic distortion (THD) performance. In addition, the chip further improves light-load efficiency and greatly reduces system standby power consumption through burst mode. KP2822 integrates complete protection functions, including: VDD undervoltage protection (UVLO), VDD overvoltage protection (VDD OVP), input undervoltage protection (BOP), output undervoltage protection (UVP), output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), in-rush current detection, overtemperature protection (OTP), and pin open/short circuit protection.
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- Product Description
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- Commodity name: KP2822
- 封装: Biyi Microelectronics
KP2822 Interleaved Critical Conduction Mode Boost PFC Controller KP2822 is a two-phase interleaved critical conduction mode (CRM) boost constant voltage power factor correction (PFC) controller. The two-phase interleaved structure reduces the current stress of each phase, disperses thermal stress, reduces inductor volume, and facilitates system design. The chip integrates a two-phase interleaved clock control logic, which reliably achieves a 180° phase difference between the two channels under all operating conditions, significantly reduces input and output current ripple, doubles the ripple frequency, effectively reduces the size of the EMI filter, improves system reliability, and reduces the output capacitance requirement. The two-phase circuits controlled by 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 to improve system efficiency. The chip also uses an optimized CRM/DCM control algorithm and input line voltage feedforward to easily achieve high power factor (PF) and low input harmonic distortion (THD) performance. In addition, the chip further improves light-load efficiency and greatly reduces system standby power consumption through burst mode. KP2822 integrates complete protection functions, including: VDD undervoltage protection (UVLO), VDD overvoltage protection (VDD OVP), input undervoltage protection (BOP), output undervoltage protection (UVP), output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), in-rush current detection, overtemperature protection (OTP), and pin open/short circuit protection.
Main Features
• Bi-phase Interleaved Parallel, Critical Conduction Mode (CRM)
• Reliable 180° phase-shift control technology for all operating conditions
• Optimized light-load efficiency and standby power consumption
• Power factor >0.95
• Optimized light-load THD, THD<10%
• Optimized dynamic performance
• Adjustable maximum output power
• Demagnetization detection via auxiliary winding
• Precise valley current detection
• Internal protection functions:
• VDD overvoltage/undervoltage protection (VDD OVP/UVLO)
• Brown-out protection (BOP)
• Output overvoltage/undervoltage protection (OVP/UVP)
• In-rush current detection
• Cycle-by-cycle current limiting (OCP)
• Over-temperature protection (OTP)
• Pin-to-pin short circuit protection
• Package type SOP-16
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