DPA424R Power Integrations, DPA424R Datasheet - Page 2

• Manufacturer Part Number: DPA424R
• Description: IC CONV DC-DC DPA SWITCH TO263-7
• Manufacturer: Power Integrations
• Series: DPA-Switch®r

Specifications of DPA424R

• Applications: Converter, Power Over Ethernet and Telecom Applications
• Voltage - Input: 16 ~ 75 V
• Number Of Outputs: 1
• Voltage - Output: 220V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (6 leads + tab, variant)
• Output Voltage: 9 V
• Output Current: 3.5 A
• Input Voltage: - 0.3 V to + 220 V
• Switching Frequency: 282 KHz to 425 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 79 %
• For Use With: DAK-21A - KIT DESIGN ACCELERATOR DPA SW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Functional Block Diagram ....................................................................................................................................... 3
Pin Functional Description ...................................................................................................................................... 3
DPA-Switch Family Functional Description ............................................................................................................ 4
Using Feature Pins ..................................................................................................................................................... 9
Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 12
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins ...................................................... 12
Application Examples .............................................................................................................................................. 15
Key Application Considerations ............................................................................................................................. 18
Product Specifications and Test Conditions ......................................................................................................... 22
Typical Performance Characteristics
Part Ordering Information ....................................................................................................................................... 31
Package Outlines .................................................................................................................................................... 32
2
DPA423-426
CONTROL (C) Pin Operation .................................................................................................................................. 4
Oscillator and Switching Frequency ....................................................................................................................... 5
Pulse Width Modulator & Maximum Duty Cycle ..................................................................................................... 6
Minimum Duty Cycle and Cycle Skipping .............................................................................................................. 6
Error Amplifier ......................................................................................................................................................... 6
On-chip Current Limit with External Programmability ............................................................................................. 6
Line Under-Voltage Detection (UV) ......................................................................................................................... 6
Line Overvoltage Shutdown (OV) ........................................................................................................................... 7
Line Feed-Forward with DC
Remote ON/OFF ..................................................................................................................................................... 7
Synchronization ...................................................................................................................................................... 8
Soft-Start ................................................................................................................................................................. 8
Shutdown/Auto-Restart ........................................................................................................................................... 8
Hysteretic Over-Temperature Protection ................................................................................................................. 8
Bandgap Reference ............................................................................................................................................... 8
High-Voltage Bias Current Source .......................................................................................................................... 8
FREQUENCY (F) Pin Operation .............................................................................................................................. 9
LINE-SENSE (L) Pin Operation ............................................................................................................................... 9
EXTERNAL CURRENT LIMIT (X) Pin Operation ...................................................................................................... 9
DPA-Switch Design Considerations ...................................................................................................................... 18
DPA-Switch Layout Considerations ...................................................................................................................... 19
Quick Design Checklist ........................................................................................................................................ 20
Design Tools ......................................................................................................................................................... 20
P
7/05
MAX
Reduction .............................................................................................................. 7
.................................................................................................................. 28
Section List