EVL250W-ATX80PL STMicroelectronics, EVL250W-ATX80PL Datasheet - Page 23

• Manufacturer Part Number: EVL250W-ATX80PL
• Description: BOARD DEMO SMPS L6591/L6563S
• Manufacturer: STMicroelectronics
• Series: VIPer™ plusr

Specifications of EVL250W-ATX80PL

• Main Purpose: Power Supply, ATX
• Outputs And Type: 3, Isolated
• Power - Output: 250W
• Voltage - Output: 12V, 5V, 3.3V
• Current - Output: 13.5A, 12A, 8A
• Voltage - Input: 88 ~ 264VAC
• Regulator Topology: Flyback
• Frequency - Switching: 80kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6563S, L6591, L6727, VIPer27H
• Input Voltage: 88 VAC to 264 VAC
• Output Voltage: 3.3 V, 5 V, 12 V
• Maximum Operating Temperature: + 60 C
• Operating Supply Voltage: 80 VAC to 264 VAC
• Output Power: 250 W
• Product: Power Management Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563S PFC controller
• Other names: 497-10596

AN3203
4.2
Thermal considerations
This demonstration board has been designed for operation with forced air cooling, very
common in ATX power supply applications. As the component temperatures depend on the
type of fan used and on the airflow path inside the board housing, a thermal map of the
board isn’t significant and has not been taken. When the system works at 25 °C with full
load and no forced air, temperatures are not so high. If a heatsink with lower thermal
resistance for MOSFETs Q201 and Q202 is used, fanless operation may be achieved. For
example, the same shape of the heatsink used for D1, Q1, Q2, D3, Q101, and Q102 could
be used for fanless operation. A picture of this application is shown in
Figure 17. Fanless board
Doc ID 17402 Rev 1
Electrical performance
Figure
17.
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