参数资料
型号: DW025AF-1
元件分类: 电源模块
英文描述: 2-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
文件页数: 7/20页
文件大小: 1627K
代理商: DW025AF-1
Tyco Electronics Corp.
15
Data Sheet
June 1997
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
DW025 Dual Output-Series Power Modules: dc-dc Converters;
Thermal Considerations (continued)
Air Velocity (continued)
8-988(C)
Figure 20. Total Power Dissipation vs. Local
Ambient Temperature and Air Velocity
8-989(C)
Figure 21. Case-to-Ambient Thermal Resistance vs.
Air Velocity
Use of Heat Sinks and Cold Plates
The DW025-Series case includes through-threaded
M3 x 0.5 mounting holes allowing attachment of heat
sinks or cold plates from either side of the module. The
mounting torque must not exceed 0.56 N/m (5 in.-lb.).
The following thermal model can be used to determine
the required thermal resistance of the sink to provide
the necessary cooling:
where PD is the power dissipated by the module,
θCS
represents the interfacial contact resistance between
the module and the sink, and
θSA is the sink-to-ambient
thermal impedance (°C/W). For thermal grease or foils,
a value of
θCS = 0.1 °C/W—0.3 °C/W is typical.
The required
θSA is calculated from the following equa-
tion:
θSA = [(Tc – TA)/PD] – θCS
Note that this equation assumes that all dissipated
power must be shed by the heat sink. Depending on
the user-dened application environment, a more accu-
rate model including heat transfer from the sides and
bottom of the module can be used. This equation pro-
vides a conservative estimate in such instances.
For further information, refer to the
Thermal Energy
Management CC-, CW-, DC-, and DW-Series 25 W
to 30 W Board-Mounted Power Modules Technical
Note.
40
50
60
90
100
0.0
4.0
5.0
6.0
10.0
LOCAL AMBIENT TEMPERATURE, TA (
°C)
7.0
8.0
9.0
70
80
3.0
2.0
1.0
2.03 ms –1 (400 ft./min)
NATURAL
CONVECTION
1.02 ms –1 (200 ft./min)
TOTAL
POWER
DISSIPATION,
P
D
(W)
0.51 ms –1 (100 ft./min)
0.31 ms –1 (60 ft./min)
NAT
CONV
0.25
(50)
0.51
(100)
0.76
(150)
1.78
(350)
2.03
(400)
0.0
1.0
2.0
3.0
7.0
VELOCITY ms –1 (ft./min.)
4.0
5.0
6.0
1.02
(200)
1.27
(250)
1.52
(300)
THERMAL
RESISTANCE
CASE
TO
AMBIENT
(
°C/W)
PD
θCS
TA
Tc
l
Ts
θSA
相关PDF资料
PDF描述
DW025BK-M 2-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
DW025AB-8 2-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
DW025BB-M 2-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
DW025BK-1 2-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
E-762 COPPER ALLOY, WIRE TERMINAL
相关代理商/技术参数
参数描述
DW025AF8-M 功能描述:DC/DC转换器 5V/3.3V 2.5A 25W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
DW025AF-M 功能描述:DC/DC转换器 5V/3.3V 2.5A 25W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
DW025AJ-M 功能描述:CONVERTER DC/DC 5/-5V 25W OUT RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:DW025 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入(最小):42V 电压 - 输入(最大):60V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出(最大):* 电源(瓦) - 制造商系列:150W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-SlimMod 尺寸/尺寸:4.60" L x 1.80" W x 0.52" H(116.8mm x 45.7mm x 13.2mm) 包装:散装 工作温度:-55°C ~ 85°C 效率:* 电源(瓦特)- 最大:*
DW025BB-M 制造商:未知厂家 制造商全称:未知厂家 功能描述:DC-to-DC Voltage Converter
DW025BK-M 功能描述:CONVERT DC/DC 12/-12V 25W OUT RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:DW025 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入(最小):42V 电压 - 输入(最大):60V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出(最大):* 电源(瓦) - 制造商系列:150W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-SlimMod 尺寸/尺寸:4.60" L x 1.80" W x 0.52" H(116.8mm x 45.7mm x 13.2mm) 包装:散装 工作温度:-55°C ~ 85°C 效率:* 电源(瓦特)- 最大:*