 English |
|
|
|
|
|
|
|
| UPSR1103 Datasheet, PDF (7/8 Pages) Unisonic Technologies – HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR | |||
| |||
| ◁ |
UPSR1103
Advance
CMOS IC
ï® OPERATION DESCRIPTION(Cont.)
Gate Output
The UTC UPSR1103 output stage is a fast totem-pole gate driver. Cross conduction has been avoided to minimize
heat dissipation, increase efficiency, and enhance reliability. The output driver is clamped at 15V to protect power
MOSFET transistors against undesired over-voltage gate signals.
Protection Control
Good power supply system reliability is achieved with its comprehensive protection features including VDD
over-voltage protection, VDD Clamp, GATE Clamp, Power on soft start, Cycle-by-cycle current limiting, short circuit
protection, leading edge blanking, OTP and UVLO, etc.
VDD is supplied by transformer auxiliary winding output. The output of UTC UPSR1103 is shutdown when VDD
drops below VTH(OFF) and the power converter enters power on start-up sequence thereafter.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 8
QW-R502-961. a
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese