Datasheet

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PRINCIPLES OF OPERATION AND TYPICAL CHARACTERISTICS
13
+V
IN
Q5
Q4
+V
REF
Q6
Q3Q2Q1
5 kW
10 kW 10 kW
Clock F/F PWM
11
14
Output
2 kW
Q8
Q9
Q7
Q10
Q11
Q6 Ommitted
In UC1527A
+V
C
+V
SUPPLY
Q1
To Output Filter
R2
R1
13
11
14
12
+V
C
A
B
UC1525A
GND
Return
UC1525A, UC1527A
UC2525A, UC2527A
UC3525A, UC3527A
SLUS191C – FEBRUARY 1997 – REVISED JANUARY 2008
Figure 1. UC1525A Output Circuit (1/2 circuit shown)
Figure 2. Grounded Driver Outputs For Single-Ended Supplies
For single-ended supplies, the driver outputs are grounded. The V
C
termainal is switched to ground by the
totem-pole source transistors on alternate oscillator cycles.
6 Submit Documentation Feedback Copyright © 1997 – 2008, Texas Instruments Incorporated
Product Folder Link(s): UC1525A, UC1527A UC2525A, UC2527A UC3525A, UC3527A