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AFL12008S

更新时间： 2024-02-26 16:50:52

品牌	Logo	应用领域
英飞凌 - INFINEON		转换器
页数	文件大小	规格书
11页	126K
描述
HIGH RELIABILITY HYBRID DC/DC CONVERTERS

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技术参数
数据手册

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AFL12008S 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	MODULE
包装说明：	,	针数：	12
Reach Compliance Code：	compliant	ECCN代码：	EAR99
风险等级：	5.73	模拟集成电路 - 其他类型：	DC-DC REGULATED POWER SUPPLY MODULE
最大输入电压：	160 V	最小输入电压：	80 V
标称输入电压：	120 V	JESD-30 代码：	R-XDMA-P12
最大负载调整率：	1%	功能数量：	1
输出次数：	1	端子数量：	12
最高工作温度：	85 °C	最低工作温度：	-20 °C
最大输出电压：	9.6 V	标称输出电压：	8 V
封装主体材料：	UNSPECIFIED	封装形状：	RECTANGULAR
封装形式：	MICROELECTRONIC ASSEMBLY	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	表面贴装：	NO
技术：	HYBRID	温度等级：	OTHER
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：	40	最大总功率输出：	80 W
微调/可调输出：	YES	Base Number Matches：	1

AFL12008S 数据手册

AFL120XXS Series

When operating in the shared mode, it is important that A conservative aid to estimating the total heat sink surface

symmetry of connection be maintained as an assurance of area (A_{HEAT SINK}) required to set the maximum case temp-

optimum load sharing performance. Thus, converter out- erature rise (∆T) above ambient temperature is given by

puts should be connected to the load with equal lengths of the following expression:

wire of the same gauge and sense leads from each con-

verter should be connected to a common physical point,

preferably at the load along with the converter output and

return leads. All converters in a paralleled set must have

their share pins connected together. This arrangement is

diagrammatically illustrated in Figure III. showing the out-

puts and sense pins connected at a star point which is

located close as possible to the load.

−1.43

∆T

HEAT SINK

≈

− 3.0

0.85

80P

where

∆T = Case temperature rise above ambient

P = Device dissipation in Watts = P^OUT

Eff

As a consequence of the topology utilized in the current

sharing circuit, the share pin may be used for other func-

tions. In applications requiring a single converter, the volt-

age appearing on the share pin may be used as a “current

monitor”. The share pin open circuit voltage is nominally

+1.00v at no load and increases linearly with increasing

output current to +2.20v at full load. The share pin voltage is

referenced to the output return pin.

−1

As an example, it is desired to maintain the case tempera-

ture of an AFL27015S at £ +85°C in an area where the

ambient temperature is held at a constant +25°C; then

∆T = 85 - 25 = 60°C

Thermal Considerations

From the Specification Table, the worst case full load effi-

ciency for this device is 83%; therefore the power dissipa-

tion at full load is given by

Because of the incorporation of many innovative techno-

logical concepts, the AFL series of converters is capable of

providing very high output power from a package of very

small volume. These magnitudes of power density can only

be obtained by combining high circuit efficiency with effec-

tive methods of heat removal from the die junctions. This

requirement has been effectively addressed inside the de-

vice; but when operating at maximum loads, a significant

amount of heat will be generated and this heat must be

conducted away from the case. To maintain the case tem-

perature at or below the specified maximum of 125°C, this

heat must be transferred by conduction to an appropriate

heat dissipater held in intimate contact with the converter

base-plate.

(

)

120

120 0.205 24.6W

•

−

•

.83

and the required heat sink area is

−1.43

HEAT SINK

− 3.0 = 71 in²

80• 24.6^0.85

Because effectiveness of this heat transfer is dependent

on the intimacy of the baseplate/heatsink interface, it is st-

rongly recommended that a high thermal conductivity heat

transferance medium is inserted between the baseplate a-

nd heatsink. The material most frequently utilized at the fa-

ctory during all testing and burn-in processes is sold under

Thus, a total heat sink surface area (including fins, if any) of

71 in in this example, would limit case rise to 60°C above

ambient. A flat aluminum plate, 0.25" thick and of approxi-

mate dimension 4" by 9" (36 in per side) would suffice for

this application in a still air environment. Note that to meet

the criteria in this example, both sides of the plate require

unrestricted exposure to the ambient air.

the trade name of Sil-Pad 400 . This particular pro duct

is an insulator but electrically conductive versions are also

available. Use of these materials assures maximum surfa-

ce contact with the heat dissipator thereby compensating

for minor variations of either surface. While other available

types of heat conductive materials and compounds may

provide similar performance, these alternatives are often

less convenient and are frequently messy to use.

Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN

www.irf.com

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AFL12008SW/HB	INFINEON	28V Input, Single Output HYBRID-HIGH RELIABILITY DC/DC CONVERTER	获取价格
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