| Part Number | DK913 |
| Manufacturer | DongKe Semicondutor |
| Title | 12W primary-side feedback AC-DC conversion chip |
| Description | DK913 12W DK913 AC-DC ， 700V ，、， ， CMOS ，，， 。 85V—265V 700V ， ， ， PWM ， ， EMC ±3%，±6% 、、 4KV ESD LED ... |
| Features |
10
3
http://www.dkpower.cn
DK913
1.
DK913 12W ，，+/-3%；
Ip，： Pomax= Io *Vout
2.
； VCC ， VCC 5.3V ，，。
3.
, 32kHz ； FB 1.2V ，。
4. FB
， FB ； FB 。
5. Ip=400mV/Ris, ，
。 Io 1 * Ip * Np 。 4 Ns
6.
FB VO ，FB 2.5V
， PWM VO 。
VO
2.5v *
Ns NA
* (1
RFB2) RFB1
Vd
。
Vd ，
。
...
|
| File Size | 935.77KB |
| Datasheet |
|
DK912 : The DK912 is a primary side flyback type AC-DC Switch Mode Power Controlling IC. It integrates 700V high voltage power transistor and primary side peak current detecting circuit. It also includes Primary Side Constant Current Regulation, Constant Voltage Control, Self-Power supply circuit and Output cable compensation functions. Because of its highly integrated CMOS circuit design, lots of external components are saved, transformer design is simple, only two windings are needed in transformer for isolated circuit designs. 2. APPLICATIONS ·Battery charger ·Power AC/DC adapters ·STB power supply ·Electromagnetic oven power supply ·DVD/VCD power supply ·Air conditioner power supply ·AC/DC LED.