KP1511SPA

High performance, critical mode boost PFC constant voltage controller

KP1511SPA is a highly integrated step-up PFC constant voltage controller, the chip adopts a quasi-resonant mode of operation, coupled with active power factor correction control technology to meet the requirements of high power factor, ultra-low harmonic distortion and high efficiency.

KP1511SPA internal integrated degaussing signal detection technology, while integrated 650V high voltage start and power supply circuit, no auxiliary winding detection degaussing and power supply, only a few peripheral devices, greatly simplifying the system design and production costs.

KP1511SPA integrates complete protection functions to ensure safe and reliable operation of the system, such as: VDD undervoltage protection function (UVLO), cycle current limit (OCP), overheat protection (OTP), output overvoltage protection (OVP), output undervoltage protection (UVP), etc.

Main feature

• High efficiency in quasi-resonant mode

• Support no auxiliary winding design

• Integrated 650V high voltage start and power supply circuit

• Single-stage active power factor correction technology

• Full voltage power factor >0.9, THD<10%

• System startup time <200ms

• High precision constant pressure control

• Ultra-low operating current

• Excellent line voltage and load adjustment

• Internal protection functions:

Output Overvoltage protection (OVP)

• Output Undervoltage protection (UVP)

• Cycle Current Limit (OCP)

• Front blanking (LEB)

• Overheat protection (OTP)

• Encapsulation type SOP-8

Typical application

• High-power PFC applications

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