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AP3105R

BCD
Part Number AP3105R
Manufacturer BCD
Description High Voltage Green Mode PWM Controller
Published Aug 4, 2014
Detailed Description Application Note 1062 High Voltage Green Mode PWM Controller AP3105 Prepared by Wu Qikun System Engineering Dept. 1. I...
Datasheet PDF File AP3105R PDF File

AP3105R
AP3105R

Overview
Application Note 1062 High Voltage Green Mode PWM Controller AP3105 Prepared by Wu Qikun System Engineering Dept.
1.
Introduction The AP3105 is a low start-up current, current mode PWM controller with green-mode power-saving operation.
Different from AP3103, AP3105 PWM switching frequency at normal operation is fixed at 65kHz dithering with a narrow range.
The difference between AP3103/AP3105 is shown in Table 1.
The dithering of frequency will improve EMI feature.
When the load decreases, the frequency will reduce and when at a very low load, the IC will enter the “burst mode” to minimize switching loss.
A minimum 20kHz frequency switching is to avoid the audible noise as well as reducing...


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