High Voltage Input (184Vac…707Vac) to 12V@1A, 3.3V@100mA Non-isolated Flyback Reference Design

(ACTIVE) PMP8678

Description & Features

Technical Documents

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Description

The UCC28720 is a quasi resonant controller and is specialized to drive high voltage BJTs. When the drain voltage is higher than 1KV, BJTs are the best choice for low to mid power flyback converters. In this case two voltages are supplied: 12V@1A and 3.3V@100mA.

Features
  • Over 84% efficiency at full load
  • Over 70% efficiency at 10% load
  • Provides 12V and 3.3V outputs
  • Works continuously up to 440Vac input and survives 1KVpeak surge

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 PMP8678.1
(Output Voltage 1)
PMP8678.2
(Output Voltage 2)
Vin (Min) (V)185185
Vin (Max) (V)700700
Vout (Nom) (V)3.312
Iout (Max) (A).11
Output Power (W).3312
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyBuck- Integrated SwitchFlyback- Quasi Resonant

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS560200  17V Input, 500mA Synchronous Step-Down Regulator in SOT-23 with Advanced Eco-Mode™  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules
UCC28720  Constant-Voltage, Constant-Current Controller with Primary-Side Regulation for Bipolar Power Devices  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 822 20 Oct 2014 94
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 52 20 Oct 2014 42
PDF 36 20 Oct 2014 19
PDF 192 20 Oct 2014 120


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