KP311BH
High Precision 5V Default Output
Up to 50kHz Switching Frequency
Integrated with 500V MOSFET and High Voltage Startup Circuit
Integrated with Freewheeling Diode
Integrated Sense Resistor, Low System Cost
Support Ultra-low Input Voltage (>15V)
Support Buck&Buck-Boost Topology
On/OFF Peak Current Mode Control
Lower Standby Power Dissipation(<50mW)
Built-in Soft Start Circuit
Ultra-low VDD Operation Current
Built-in Protections:
Overload Protection (OLP)
On-Chip Thermal Shutdown (OTP)
Cycle-by-Cycle Current Limiting (OCP)
Abnormal Over Current Protection
(AOCP)
Leading Edge Blanking (LEB)
VDD UVLO
ASOP-7 Package Available
KP311BH is a low cost, highly integrated PWM power switch for non-isolated buck and buck-boost convertor applications.
KP311BH integrates a 500V power MOSFET with ON/OFF PWM controller in one chip. The IC can achieve high precision 5V default output at full range AC input. In KP311BH, Toff_min is set to 20μs with frequency jitter function to improve EMI performance. The IC has built-in green mode control for light and zero loadings, which can achieve lower than 50mW standby power dissipation.
KP311BH integrates multiple protections: Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), On-chip Thermal Shutdown (OTP), Overload Protection (OLP), Short Load Protection(SLP), etc.
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