Datel 20A manual Output Trim, Datel S.A.R.L. Montigny Le Bretonneux, France Tel

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USQ Series

2 0 A , S I N G L E O U T P U T D C / D C C O N V E R T E R S

–Input

–Output

 

–Sense

Remote On/Off

Output Trim

 

+Sense

+Input

+Output

BOTTOM VIEW

Figure 20. Industry Standard Quarter-Brick Pinout

+Input

X

 

+Output

 

 

+Sense

Remote

 

 

 

Output Trim

On/Off

 

LOCATE

 

–Sense

 

 

–Input

THERMOCOUPLE

–Output

HERE

 

 

 

 

TOP VIEW

Figure 21. Thermocouple Placement for Temperature Derating Calculations

Figure 20 readily allows users to confirm that DATEL quarter-brick DC/DC converters are compatible to the industry-standard pinout, independent of pin-numbering conventions.

The typical derating curves on the previous pages were developed by moni- toring the temperature of the case with a thermocouple placed on top of the USQ case as shown in Figure 21. Users desiring to model their own application's temperature derating for a particular environment (enclosed area, orientation, airflow, possible heatsinking) should make sure the case temperature does not exceed 110°C for any condition.

®®

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DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151

Tel: (508) 339-3000

(800) 233-2765

Fax: (508) 339-6356

www.datel.com

Email: sales@datel.com

 

www.cdpowerelectronics.com

 

 

ISO 9001 REGISTERED

DS-0493D

10/04

DATEL (UK) LTD. Tadley, England Tel: (01256)-880444

Internet: www.datel-europe.com

E-mail: datel.ltd@datel.com

 

DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01

Internet: www.datel-europe.com

E-mail: datel.sarl@datel.com

 

DATEL GmbH München, Germany Tel: 89-544334-0

Internet: www.datel-europe.com

E-mail: datel.gmbh@datel.com

DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025

Internet: www.datel.co.jp Email: salestko@datel.co.jp, salesosa@datel.co.jp

DATEL China Shanghai, China Tel: 011-86-51317131

E-mail: davidx@datel.com

DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.

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Contents  Outstanding thermal-derating  Output current to 20 Amps Features Fully isolated, 1500Vdc guaranteed  UL1950/EN60950 Basic insulation approvalsPerformance Specifications and Ordering Guide Case C33Performance/Functional Specifications Filtering, Input Ripple Current, and Output Noise Removal of Soldered USQs from PCBsInput Source Impedance Input Overvoltage ShutdownOn/Off Control Input FusingStart-Up Time Current LimitingTrim Equations USQ-1.2/20-D48Trim-Up Resistance vs. Percentage Increase in Output Voltage USQ-12 Trim-Up Resistance vs. % Increase Vout Floating Outputs Negative-Trim Units D SuffixModel Trim Up Remote SensePerformance Specifications Dynamic Load Response and Switching FrequencySwitching Frequency min./typ./max. kHz Load Step = 50 to 75% of Iout Max Peak Deviation, typTBD Typical Performance Curves for 1.2VOUT ModelsTypical Performance Curves for 1.5VOUT Models Typical Performance Curves for 1.8VOUT Models Typical Performance Curves for 2.5VOUT Models Typical Performance Curves for 3.3VOUT Models Typical Performance Curves for 5VOUT Models Start-Up from VINUSQ Models Typical Performance Curves for 12VOUT Models USQ-12/8.3-D24 Output Current vs. Ambient Temperature Typical Performance Curves for 15VOUT Models Typical Performance Curves for 24VOUT Models Mail datel.sarl@datel.com Output TrimDatel S.A.R.L. Montigny Le Bretonneux, France Tel Datel GmbH München, Germany Tel