AP3106

Preliminary Datasheet HIGH VOLTAGE GREEN MODE PWM CONTROLLER AP3106 General Description The AP3106 is a high voltage start-up, current mode PWM controller with green-mode power-saving operation. The PWM switching frequency at normal operation is externally programmable and trimmed to a narrow range. The AP3106 integrates a proprietary internal frequency dithering function that helps to reduce EMI emission of a power supply with minimum line filters used. To minimize the standby power consumption, a proprietary adaptive green-mode function is available to implement frequency modulation under light-load conditions. To avoid acoustic noise problems, the minimum PWM frequency is set at about 26kHz. The AP3106 integrates a lot of functions such as the Lead-Edge Blanking (LEB) of the current sensing, internal slope compensation, line compensation, and several protection features that include cycle-by-cycle current limit (OCP), over voltage protection, OTP, OLP and brownout protection. The AP3106 is available in SOIC-7 package to realize a compact size. Features High-voltage Start-up Circuit Low Start-up Current: 15µA (Max.) Current Mode Control Programmable PWM Switching Frequency Non-audible-noise Green Mode Control LEB (Leading-Edge Blanking) on SENSE Pin Fast OCP for Abnormal Short Circuit Frequency Linearly Decreasing at Light Load Soft Driving Internal Slope Compensation Built-in Brownout Protection Useful Pin Fault Protection CS Pin Floating RI Pin ...