Datasheet

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V
REF
PWM
Adj.
3 kW
10 kW
1.5 kW
3.6 kW
.009
0.1
1 = VOS
2 = I(+)
3 = I(−)
V/I Meter
−
+
Clock
SYNC
R
T
Deadtime
Ramp
100 W
.001
Comp
10 kW
0.1
0.1
Oscillator
16
4
3
6
7
5
9
1
2
15
13
11
14
12
8
10
Reference
Regulator
Flip/
Flop
PWM
E/A
D.U.T.
A
B
+V
IN
0.1
V
C
0.1
Out A
1 k, 1 W
(2)
Out B
Gnd
Soft-Start
5 mF
50 mA
5 kW
5 kW
5 kW
V
REF
Shutdown
1
2
3
1
2
3
3
1
2
1
2
3
UC1525A, UC1527A
UC2525A, UC2527A
UC3525A, UC3527A
SLUS191C – FEBRUARY 1997 – REVISED JANUARY 2008
PRINCIPLES OF OPERATION AND TYPICAL CHARACTERISTICS (continued)
Figure 12. Lab Test Fixture
10 Submit Documentation Feedback Copyright © 1997 – 2008, Texas Instruments Incorporated
Product Folder Link(s): UC1525A, UC1527A UC2525A, UC2527A UC3525A, UC3527A