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ATR285S/ES

更新时间： 2024-02-24 08:06:36
品牌 Logo 应用领域
英飞凌 - INFINEON 局域网输出元件
页数 文件大小 规格书
10页 71K
描述
1-OUTPUT 30W DC-DC REG PWR SUPPLY MODULE

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ATR285S/ES 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：,Reach Compliance Code：compliant
风险等级：5.8模拟集成电路 - 其他类型：DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：40 V最小输入电压：16 V
标称输入电压：28 VJESD-30 代码：R-XDFM-P10
JESD-609代码：e0功能数量：1
输出次数：1端子数量：10
最高工作温度：125 °C最低工作温度：-55 °C
最大输出电压：5.05 V最小输出电压：4.95 V
标称输出电压：5 V封装主体材料：UNSPECIFIED
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
表面贴装：NO技术：HYBRID
温度等级：MILITARY端子面层：TIN LEAD
端子形式：PIN/PEG端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED最大总功率输出：30 W
微调/可调输出：NOBase Number Matches：1

ATR285S/ES 数据手册

 浏览型号ATR285S/ES的Datasheet PDF文件第4页浏览型号ATR285S/ES的Datasheet PDF文件第5页浏览型号ATR285S/ES的Datasheet PDF文件第6页浏览型号ATR285S/ES的Datasheet PDF文件第7页浏览型号ATR285S/ES的Datasheet PDF文件第9页浏览型号ATR285S/ES的Datasheet PDF文件第10页 
ATR28XXS Series  
ATR28XXS Block Diagram  
EM I  
Filter  
1
5
4
+Vout  
+Input  
Return  
Primary  
Housekeeping  
Supply  
2
Enable  
8
Case  
D rive  
6
3
+Sense  
-Sense  
Pulse W idth  
M odulator  
Error  
Am p &  
Ref  
9
FB  
Sync  
C S  
Input  
Return  
10  
Application Information  
Thermal Management  
Inhibit Function  
Assuming that there is no forced air flow, the package  
temperature rise above ambient (∆T) may be calculated  
using the following expression:  
Connecting the inhibit input (Pin 2) to input common (Pin 10)  
will cause the converter to shut down. It is recommended  
that the inhibit pin be driven by an open collector device  
capable of sinking at least 400µA of current. The open cir-  
cuit voltage of the inhibit input is 11.5 ±1 VDC.  
∆T = 80 A –0.7 P 0.85 (°C)  
where A = the effective surface area in square inches  
(Including heat sink if used),Pd = power dissipation in watts.  
EMI Filter  
An Optional EMI filter (AFC461)is available that will reduce  
the input ripple current to levels below the limits imposed by  
MIL-STD-461B CEO3.  
The total surface area of the ATR package is 7.34 square  
inches. If a worse case full load efficiency of 76% is as-  
sumed, then the case temperature rise of an ATR2805S  
can be calculated as follows:  
Output Voltage Adjustment  
The output voltage of the ATR2805S converter can be ad-  
justed upward by connecting an appropriate resistor value  
between the Positive Output (Pin 5) and the Positive Sense  
(Pin 6) as shown in Table 1 below.  
1
1
P = Pout  
−1 = 30  
−1 = 9.5W  
Eff  
76  
∆T = 80 (7.34)-0.7 (9.5)0.85 = 134°C  
Output Voltage Increase (V)  
Resistance Pin 5 to 6 (Ω)  
109  
240  
400  
600  
857  
1200  
0.1  
0.2  
0.3  
0.4  
0.5  
0.6  
Hence, if TAMBIENT = +25°C, the DC/DC converter case  
temperature will be approximately 159°C if no heat sink  
or air flow is provided.  
To calculate the heat sink area required to maintain a  
specific case temperature rise, the above equation may  
be manipulated as follows:  
Table1 Output adjustment resistor values for ATR2805S  
Device Synchronization  
−1.43  
∆T  
Whenever multiple DC/DC converters are utilized in a single  
system, significant low frequency noise may be generated  
due to slight difference in the switching frequencies of the  
converters. Because of the low frequency nature of this  
noise (typically less than 10KHz), it is difficult to filter out  
and may interfere with proper operation of sensitive sys-  
tems. Advanced Analog permits synchronization of multiple  
ATR28XX converters to match switching frequency of the  
converter to the frequency of the system clock, thus elimi-  
nating this type of noise.  
AHEATSINK  
=
− APKG  
0.85  
80Pd  
As an example, if a maximum case temperature rise of  
50°C above ambient is required, then the required  
effective heat sink area is:  
−1.43  
50  
AHEATSINK  
=
− 7.34 = 22.9in2  
80  
(
9.5 0.85  
)
8
www.irf.com  
1...5678910

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