Datasheet

  
  

SLUS165C – MARCH 1999 - REVISED JANUARY 2002
7
www.ti.com
additional information (continued)
UDG-99053
12
5
11
15
16
8
9
13114
7
10
6
4
32
+
–
VOLTAGE ERROR
AMPLIFIER
+
–
50 k
Ω
20 k
Ω
+
V
CC
0–20 mA
ISOLATED
CONTROL
I
SET
0–4 V
DIRECT
CONTROL
1.750 V
REF
+
+
–
V
REF
RANGE 2.0 V–2.1 V
GND
AMPLIFIER
0.250 V
+
–
CURRENT
SENSE
ADJ
COMP
+
+
–
+
–
CURRENT
SHARE
BUS
+
TO PWR
RETURN
ARTIFICIAL GND
FROM LOAD
(
) SENSE
(+) SENSE
C/S OUT ADJ IN
50 mV
ADJUST AMPLIFIER
1.75 V
1.0 V
DRIVE
AMPLIFIER
PWR RET
V
CC
V
CC
REF
MODULE LOAD CURRENT
20X
MASTER
INDICATE
BUFFER
AMPLIFIER
UC3907
10 k
Ω
Figure 2. Load System Connection Diagram
UDG-94105
Figure 3. UC3907 In a Load-Sharing Feedback Loop for an Off-Line Isolated Supply