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
|
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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