UPSR1103 Datasheet, PDF (2/8 Pages) Unisonic Technologies – HIGH PRECISION CC/CV PRIMARY SIDE SWITCHING REGULATOR

UPSR1103
 PIN CONFIGURATION
CS 1
GATE 2
V_DD 3
COMR 4
Advance
8 HV
7 NC
6 GND
5 VS
CMOS IC
 PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
CS
GATE
VDD
COMR
VS
GND
NC
HV
DESCRIPTION
Current sense input.
Gate drive for power MOSFET.
Power supply.
Cable compensation.
The voltage feedback from the auxiliary winding.
Ground
No connect
High-voltage startup.
 BLOCK DIAGRAM
V_DD
5V
Regulator & ^Por
Vref
+
-
26V
OVP
Logic core
Tdemag
detector
CC
controller
HV
Start-up
Soft
drive
LEB
GATE
VS
-
2.5V ⁺
Cable
compensation
CV
controller
+
CS
-
0.8V
COMR
GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R502-961. a