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AHE2812SFES-SLV

更新时间： 2024-09-18 12:56:19

品牌	Logo	应用领域
英飞凌 - INFINEON		转换器
页数	文件大小	规格书
8页	148K
描述
HYBRID-HIGH RELIABILITY DC/DC CONVERTER

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中文翻译

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数据手册

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AHE2812SFES-SLV 数据手册

AHE28XXS Series

Block Diagram

+Vout

+Input

EMI

Filter

Output

Return

Inhibit

Input

Drive 1

Pulse Width

Modulator

Error

Amp &

Ref

Sync

V_ADJ

Drive 2

Input

Return

Device Synchronization

Application Information

Inhibit Function

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 (beat frequency noise).

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 systems

(communications, radar or telemetry). Intenational

Rectifier offers an option, which provides synchronization

of multiple AHE/ATW/ATO type converters, thus

eliminating this type of noise.

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

circuit voltage of the inhibit input is 11.5 ± 1.0VDC.

EMI Filter

An EMI filter (AFC461), available as an option, will reduce

the input ripple current to levels below the limits imposed by

MIL-STD-461B CEO.

Typical Synchronization Connection

Output Voltage Adjustment (AHE2805 only)

The output voltage of the AHE2805S converter can be

adjusted upward by connecting an appropriate resistor

between Output Adjust (Pin 3) and Output Common

(Pin 4) as shown in Table 1 below.

+ In

Output

Return

+ In

Output

Return

AFC461

AFV461

AHE28xxS

- MSTR

Case

Return

MSTR

Table 1 Output adjustment resistor values

+ In

+Output

Return

Output Voltage Increases (%)

Resistance Pin 3 to 4 ( )

AHE28xxD

-SLV

Case

Return

System

Bus

None

390K

145K

63K

22K

-Output

SLV

+1%

+2%

+3%

+4%

+5%

Output

Return

+ In

AHE28xxS

-SLV

Case

Return

SLV

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1 2 3 456 7 8

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