V24B28M200BK

更新时间： 2024-02-29 14:08:53

品牌	Logo	应用领域
VICOR		转换器
页数	文件大小	规格书
8页	149K
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V24B28M200BK 数据手册

CONTROL FUNCTIONS - SC PIN

Output Voltage Programming

The output voltage of the converter can be adjusted or

programmed via fixed resistors, potentiometers or voltage

DACs. See Figures 7 and 8.

+Out

–S

R_U

Trim Up

Error

Amp

Error

Amp

Load

R_D

Trim Down

–S

1kΩ

0.033

µF

0.033

µF

–Out

1.23V

1,000 Vout

(ohms) =

1,000 (Vout-1.23) Vnom

1.23 (Vout-Vnom)

–

1,000

(ohms) =

Vnom - Vout

Figure 7—Output voltage trim down circuit.

Figure 8—Output voltage trim up circuit.

Trim Down

Trim Up

1. This converter is not a constant power device – it has a

1. The converter is rated for a maximum delivered power. To ensure

that maximum rated power is not exceeded, reduce maximum

output current by the same percentage increase in output voltage.

constant current limit. Hence, available output power is

reduced by the same percentage that output voltage is

trimmed down. Do not exceed maximum rated output current.

2. The trim up resistor must be connected to the +Sense pin.

2. The trim down resistor must be connected to the –Sense pin.

3. Do not trim the converter above maximum trim range

(typically +10%) or the output over voltage

protection circuitry may be activated.

Trim resistor values calculated automatically:

On-line calculators for trim resistor values are available

on the vicor website at: vicorpower.com/tools.html.

Resistor values can be calculated for fixed trim up, fixed

trim down and for variable trim up or down cases for both

1st and 2nd Generation DC-DC converters.

In addition to trimming information, the web site and the

Applications Manual also include design tips, applications

circuits, EMC suggestions, thermal design guidelines and

PDF data sheets for all available Vicor products.

Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715

V24B28C200B DC-DC Converter

Rev. 3

Page 5 of 8

Set your site on VICOR at www.vicorpower.com

1 2 3 456 7 8

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