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Primary-Side Regulated Flyback with 85-265VAC Input, high output energy storage for long hold up out

(ACTIVE) PMP8930.2

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Technical Documents

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Description

The PMP8930 reference design uses the UCC28710 primary-side regulated flyback controller to generate a 20V output from a univeral AC input. a bulk capacitor with slow-charge-fast-discharge circuit is placed at flyback output to provide long hold up time for the following step-down DC-DC stages. TPS54335 is used as the controller and power stage for the main 4V or 12V output. The valley switching of the UCC28710 allows this low-cost design to achieve a maximum load efficiency of 83%; no load losses are less than 70mW.


    

TI Devices (4)

Get more information on the TI products in this reference design.

Part Number Name Product Family
LM2903  Dual Differential Comparator  Amplifiers and Linear 
LM317  3/4 Pin 1.5A Adjustable Positive Voltage Regulator  Linear Regulator (LDO) 
TPS54335  4.5V to 28V Input, 3A, Synchronous, Step-Down Converter with Eco-mode  Converter (Integrated Switch) 
UCC28710  Constant-Voltage, Constant-Current PWM Controller with Primary-Side Regulation  AC/DC and Isolated DC/DC Power Supply 


Technical Documents
User Guides (2)
Title Abstract Type Size (KB) Date Views
PDF 1563 12 Sep 2013 10
PDF 1563 12 Sep 2013 11
More Literature (4)
Title Abstract Type Size (KB) Date Views
PDF 120 12 Sep 2013 11
PDF 133 12 Sep 2013 11
PDF 120 12 Sep 2013 12
PDF 133 12 Sep 2013 12
Related Tools & Software

Software (1)



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