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AP3105NR

BCD
Part Number AP3105NR
Manufacturer BCD
Description High Voltage Green Mode PWM Controller
Published Aug 4, 2014
Detailed Description Application Note 1096 High Voltage Green Mode PWM Controller AP3105NA/NV/NL/NR Prepared by Wu Qikun System Engineering ...
Datasheet PDF File AP3105NR PDF File

AP3105NR
AP3105NR

Overview
Application Note 1096 High Voltage Green Mode PWM Controller AP3105NA/NV/NL/NR Prepared by Wu Qikun System Engineering Dept.
1.
Introduction The AP3105NX is a low start-up current, current mode PWM controller with green-mode power-saving operation.
Different from AP3103, AP3105NX’s PWM switching frequency at normal operation is fixed at 65kHz dithering with a narrow range.
The difference between AP3103 and AP3105NX 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 to reduce the standby loss.
A so-called VCC Maintain Mode is applied under light load to realize a stable output and to reduce the loss on the start-up resistor.
The standby power of the system using AP3105NX can be reduced to 60mW at 230V input.
AP3103 Frequency VFB Resistor Standby ...


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