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JHC350R4 参数 Datasheet PDF下载

JHC350R4图片预览
型号: JHC350R4
PDF下载: 下载PDF文件 查看货源
内容描述: 18 - 36VDC或36 - 75VDC输入; 28VDC输出; 350W [18 - 36Vdc or 36 - 75Vdc Input; 28Vdc Output; 350W]
分类和应用:
文件页数/大小: 16 页 / 579 K
品牌: LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
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Data Sheet  
JHC/JHW350 Power Module; dc-dc Converter  
March 26, 2008  
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W  
Feature Descriptions (continued)  
28*  
(
100 + 5  
)
(100 + 2*5)  
R
adj up  
=
KΩ  
the module remains at or below the maximum rated  
power.  
1.225*5  
5
R
tadj-up = 458kΩ  
Output Overvoltage Protection  
The output overvoltage protection consists of circuitry  
that monitors the voltage on the output terminals. If  
the voltage on the output terminals exceeds the over  
voltage protection threshold, then the module will  
shutdown and latch off. The latch is reset by either  
cycling the input power for one second or by toggling  
the on/off signal for one second. The protection  
mechanism is such that the unit can continue in this  
condition until the fault is cleared.  
Overtemperature Protection  
Figure 18. Circuit Configuration to Decrease  
Output Voltage.  
These modules feature an overtemperature protection  
circuit to safeguard against thermal damage. The  
circuit shuts down the module when the maximum  
case reference temperature is exceeded. The module  
will restart automatically when the case temperature  
cools below the overtemperature shutdown threshold.  
Input Undervoltage Lockout  
At input voltages below the input undervoltage lockout  
limit, the module operation is disabled. The module  
will begin to operate at an input voltage above the  
undervoltage lockout turn-on threshold.  
Figure 19. Circuit Configuration to Increase  
Output Voltage.  
Examples:  
To trim down the output of a nominal 28V module  
(JHW350R) to 26.6V  
28V 26.6V  
Δ% =  
×100  
28V  
% = 5  
100  
Radj down  
=
2 KΩ  
5
Radj-down = 18 kΩ  
To trim up the output of a nominal 28V module  
(JHW350R) to 29.4V  
28V 29.4V  
Δ% =  
×100  
28V  
Δ% = 5  
LINEAGE POWER  
11