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UCC28251 Datasheet(PDF) 35 Page - Texas Instruments

Part No. UCC28251
Description  UCC28251 Advanced PWM Controller With Prebias Operation
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC28251 Datasheet(HTML) 35 Page - Texas Instruments

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0.3V
0.6V
2.4V
HICC
t
t
4V
SS
OUTA
OUTB
Normal
OC
Normal
OC
Hiccup
Soft Start
T
OCdealy
T
HICC
UCC28251
www.ti.com
SLUSBD8E – FEBRUARY 2013 – REVISED DECEMBER 2014
Application Information (continued)
Figure 44. Cycle-By-Cycle Current Limit Delay Timer and Hiccup Restart Timer
9.2 Typical Applications
9.2.1 Circuit Diagram in Design Example
The example provided here is to show how to design a symmetrical half bridge converter of voltage mode control
with UCC28251 on primary side.
Figure 45 is the circuit diagram to be used in this design example. This design example is to show how to
determine the values in the circuit associated to UCC28251 programming.
Copyright © 2013–2014, Texas Instruments Incorporated
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