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參數(shù)資料
| 型號： | HEQB-25A-48V-2.5V-3 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | QUARTER BRICK PACKAGE-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 468K |
| 代理商： | HEQB-25A-48V-2.5V-3 |
HEQB–25A–48V–2.5V
P/N 7Q02F5WL000
DS HEQB 25A 48V 2-5V_7Q02_030603 Rev 4A – page 11
Magnetek PEG web site, www.magnetekpower.com
THERMAL CONSIDERATIONS
The converter has internal thermal protection preventing hot spots on PCB from exceeding MFR’s recommended
temperatures for reliable operation, reference over temperature protection threshold (Section: Feature Characteristics).
Margin to the temperature protection limit should be verified in the application, and should not exceed 120
°C on the
thermal reference points as shown in Figure 14.
During an abnormal condition inducing an increase in the converter temperature, the converter output voltage will fold
back when the over temperature protection threshold is reached. The converter will auto-recover when the fault
condition is corrected and time allowed for the converter to cool down.
Figure 14, Thermal reference points
OVERCURRENT PROTECTION
The overcurrent limit inception is typically 110% of the rated output current. When the overcurrent limit inception is
exceeded the output voltage will decrease proportional to increase to the load current. Further increase in the load
current will cause the output voltage to trip the under voltage protection threshold and enter fault protection, or hiccup
reference Figure 5. The converter will enter fault protection typically at 125% of rated output current. When the fault is
removed the converter will auto recover.
Q9
Q4
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