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DPA-Switch® Product Family

PI-2770
Typical Forward Converter Application.

Description:

  • Monolithic IC integrating 220 V high frequency MOSFET with all control & fault protection circuitry
  • Wide DC input voltage range (16 VDC to 75 VDC)
  • Lossless integrated current limit
  • Built-in auto-restart
  • Voltage mode control allows 75% duty cycle while providing >5 kHz loop bandwidth
  • Input UV/OV shutdown protection (meets ETSI standards)
  • Pin selectable 300/400 kHz
  • Enables low cost synchronous rectification

Applications:

  • 24 V/48 V Distributed Power Architectures (DPA)
  • DC-DC converter module "bricks"
  • PoE Powered Devices
  • Servers, routers & network line cards
  • Telecom central office equipment
  • VoIP & digital feature phones
  • Temperature & industrial contro
  
Output power Table
36-75 vdc input range (forward)2
Total Device Dissipation3 0.5 W

1 W

 2.5 W 4 W 6 W Max Power Output1
PRODUCT4
DPA4227 7.5 W 10 W - - - 10 W
DPA423 12 W 16 W - - - 18 W
DPA424 16 W 23 W 35 W - - 35 W
DPA425 23 W 32 W 50 W 62 W - 70 W
DPA4265 25 W 35 W 55 W 70 W 83 W 100 W
36-75 vdc input range (FLYBACK)2
Total Device Dissipation 0.5 W 0.75 W 1 W 1.5 W Max Power Output1
PRODUCT4
DPA 422 6.5 W 9.0 - - 9.0 W
DPA423 9 W 13 W - - 13 W
DPA424 10 W 14.5 W 18 W 24 W 26 W
DPA425 -6 -6 -6 25.5 W 52 W
Notes: 1. Maximum output power is limited by device internal current limit. 2. See Applications Considerations section for complete description of assumptions and for output powers with other input voltage ranges. 3. For device dissipation of 1.5 W or below, use P or G packages. Device dissipation above 1.5 W is possible with R package. 4. Packages: P: DIP-8, G: SMD-8, R: TO-263-7C. For lead-free package options, see Part Ordering Information. 5. Available in R packages only. 6. Due to higher switching losses, the DPA425 may not deliver additional power compared to a smaller device. 7. Available in P and G package only.

 

Data Sheet DC-DC Selector guide Application Note package information
DPA Family Datasheet DC-DC Product Selector Guide Application Note Package Info

 

Power over Ethernet Design Information
PoE Applications Support Page

 

Reference Design Description
RDKs include a working power supply, sample devices, unpopulated pcb, data sheet, comprehensive engineering report, PI Expert design software and other related documentation.
DAK-21A 30 W DC-DC Forward Converter
DAK-68A 6.6 W DC-DC Flyback Converter with PoE Powered Device Interface
DAK-71A 6.6 W DC-DC Flyback Converter
DAK-86 6.6 W Multi-Class Powered Device (PD) for
Power over Ethernet (PoE)

 

Lead (Pb)-Free Finish Options

 

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