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KP311BH
KP311BH High-performance, low-cost offline PWM controlled power switch. KP311BH is a non-isolated, highly integrated, low-cost PWM power switch suitable for buck and buck-boost circuits. KP311BH adopts high-voltage single-wafer process, integrating 500V high-voltage MOSFET and a controller using switching peak current mode control on the same wafer. It can ensure high-precision 5V default output within the full voltage input range. Inside the chip, the minimum Toff time is fixed at 20μs and it has a frequency jitter function, optimizing EMI performance while ensuring output power. At the same time, the chip is designed with light and heavy load modes, allowing for easily achieving standby power consumption below 50mW. KP311BH integrates complete protection functions: VDD undervoltage protection, cycle-by-cycle current limit, abnormal overcurrent protection, over-temperature protection, overload protection, and short-circuit protection.
Category：
- Product Description
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- Commodity name: KP311BH
- 封装: ASOP-7
- 品牌: Biyi Microelectronics
KP311BH High-performance, low-cost offline PWM controlled power switch. KP311BH is a non-isolated, highly integrated, low-cost PWM power switch suitable for buck and buck-boost circuits. KP311BH adopts high-voltage single-wafer process, integrating 500V high-voltage MOSFET and a controller using switching peak current mode control on the same wafer. It can ensure high-precision 5V default output within the full voltage input range. Inside the chip, the minimum Toff time is fixed at 20μs and it has a frequency jitter function, optimizing EMI performance while ensuring output power. At the same time, the chip is designed with light and heavy load modes, allowing for easily achieving standby power consumption below 50mW. KP311BH integrates complete protection functions: VDD undervoltage protection, cycle-by-cycle current limit, abnormal overcurrent protection, over-temperature protection, overload protection, and short-circuit protection.
Key Features
• High precision 5V default output
• Up to 50kHz switching frequency
• Integrated 500V high voltage MOSFET and high voltage startup circuit
• Integrated rectifier bridge and freewheeling diode
• Integrated sampling resistor, ultra-low system cost
• Supports ultra-low voltage input (above 15V) applications
• Supports buck and buck-boost topologies
• Switching peak current mode control
• Ultra-low standby power consumption less than 50mW
• Ultra-low operating current, supports small VDD capacitors
• Integrated soft start circuit
'• Integrated protection functions:'
• Overload Protection (OLP)
• Over Temperature Protection (OTP)
• Cycle-by-cycle Current Limit (OCP)
• Abnormal Over Current Protection (AOCP)
• Leading Edge Blanking (LEB)
• VDD Undervoltage Protection
• Package ASOP-7
Product Message
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