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dc1145bf

DEMO MANUAL DC1145B

Linear Technology  Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417 

(408) 432-1900 

 FAX: (408) 434-0507 

 

www.linear.com

© 

LINEAR TECHNOLOGY CORPORATION 2011

LT 0711 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) provides the enclosed product(s) under the following 

AS IS

 conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for 

ENGINEERING DEVELOPMENT 

OR EVALUATION PURPOSES ONLY

 and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete 

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety 
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union 
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date 
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU 
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS 
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR 
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims 
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all 
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or 
agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. 

LTC assumes no liability for applications assistance, 

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LTC currently services a variety of customers for products around the world, and therefore this transaction 

is not exclusive

.

Please read the DEMO BOARD manual prior to handling the product

. Persons handling this product must have electronics training and 

observe good laboratory practice standards. 

Common sense is encouraged

.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-
tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Copyright © 2004, Linear Technology Corporation

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Содержание DC1145B

Страница 1: ...TER CONDITIONS VALUE Minimum Turn on Voltage Input from PSE IOUT 100mA 39V Maximum Turn off Voltage Input from PSE 33V Operating PoE Voltage Input from PSE IOUT 0 to Maximum Output Current 37V to 57V Maximum Input Current Input from PSE 350mA Maximum Output Current Input from PSE VOUT 12V 0 9A Output Voltage Input from PSE IOUT 0 to Maximum Output Current 12V 2 PD Power Class RCLASS R7 45 3 Ohm Cl...

Страница 2: ...back converter operates at a typical switching frequency of 200kHz controlled by the current mode controller portion of the LT4267 Galvanic isolation is achieved through transformer T1 capacitor C14 and opto isolators ISO1 and ISO2 The primary side power path is comprised of C1 L1 C9 of T1 Q2 and R6 These components should be as closetoeachotheraspossiblewhenlayingouttheprinted circuit board In an...

Страница 3: ...ered by an alternate input power supply Connect 48V through the PoE and PoE terminals Only one set of connections is necessary Do not connect more than one power source 6 Increase the load at VOUT up to 0 9A Observe the output regulation ripple voltage efficiency and other parameters 7 MeasurePWRGDandSIGDISArelativetoPOE Verify PWRGD is logic low and SIGDISA is logic low 8 Connect a 12V auxiliary ...

Страница 4: ... 99 12 12 01 12 02 12 03 12 04 12 05 0 0 2 0 4 0 6 0 8 1 Output Voltage V Output Current A Vin 37V Vin 48V Vin 57V Figure 2 Efficiency Input Voltage VIN is measured at RJ45 Jack Figure 3 Output Voltage Regulation Figure 2 and 3 are measured data for a typical DC1145B Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Страница 5: ...W SOD323 Diodes Inc 1N4148WS 7 F 20 1 ISO1 Opto Iso NEC High Ctr PbF NEC PS2911 1 K A 21 1 ISO2 Opto Iso 4PIN MFLAT SINGLE DC HIGH V COUPLER NEC PS2913 1 K A 22 1 L1 Inductor 8 2μH DO1608C COILCRAFT DO1608C 822ML 23 1 Q1 XSTR High Voltage PbF SOT23 ON Semi MMBTA42LT1G 24 1 Q2 MOSFET N Chan 200V SUPERSOT 6LEADS Fairchild Semi FDC2612 25 1 R1 Res Chip 13 0 1W 5 0805 Vishay CRCW080513R0JNEA 26 2 R2 R...

Страница 6: ...Inc 2202S 06G2 4 0 R18 OPT Res 1206 Hardware for Demo Board Only 1 1 D10 LED GRN Panasonic LN1351CTR 2 8 E1 E2 E3 E4 E5 E6 E7 E8 Turret Testpoint Mill Max 2501 2 00 80 00 00 07 0 3 1 J1 Pulse Jack PowerJack T12 Pulse Engrng JK0 0044NL 4 1 J2 Connector Wall Adapter Cui Inc PJ 002AH 5 4 MH1 MH2 MH3 MH4 STAND OFF NYLON 0 25 tall KEYSTONE 8831 SNAP ON 6 1 R17 Res Chip 2k 0 06W 5 0603 Vishay CRCW06032K...

Страница 7: ...GY D 0LOSLWDV 3KRQH 0F DUWK OYG 7 21 17 25 86720 5 86 21 86720 5 127 1 5 7 12 2 6 0 67 257 72 6 1 5 8 7 7 7 0 76 86720 5 6833 63 7 216 2 9 5 7 5 0 16 7 86720 5 6 5 63216 7 72 9 5 3523 5 1 5 23 5 7 21 1 7 78 33 7 21 20321 17 68 67 787 21 1 35 17 5 8 7 2 5 287 0 6 1 17 7 5 8 7 3 5 250 1 25 5 7 217 7 1 5 7 12 2 33 7 216 1 1 5 1 25 66 67 1 7 6 5 8 7 6 35235 7 5 72 1 5 7 12 2 1 6 0 7 6833 25 86 7 1 5 7...

Страница 8: ...INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES The user assumes all responsibility and liability for proper and safe handling of the goods Further the user releases LTC from all claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibility to take any and all approp...

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