DC2104A - ANALOG DEVICES - Product.Network

dc2104af

DEMO MANUAL DC2104A

Description

LT8312

Boundary Mode

PFC Controller

Demonstration Circuit 2104A is an off-line boundary

conduction mode power factor correction (PFC) boost

converter featuring the LT

8312. Boundary conduction

mode offers inherent MOSFET valley switching to reduce the

switching loss and the boost diode zero current switching

to remove the diode reverse-recovery loss. The demo board

provides a 400V/150W single constant-voltage output

suitable for applications requiring regulated input voltage.

The DC2104A is optimized to operate over a wide AC input

voltage range (90VAC to 265VAC, 47Hz to 63Hz). Output

voltage accuracy stays within ±5% over the whole input

voltage and load range. It provides a high power factor

(>0.95) enabling the design to be used worldwide. It is

also designed to comply with the IEC61000-3-2 Class-D

harmonics standard and the EN55022 conducted EMI

standard.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

performance summary

This DC 2104A evaluation board uses a two-layer printed

circuit board (PCB) designed for 150W (400V/0.375A)

rated power. It can also be changed for other power level

applications. Please refer to the Typical Applications sec-

tion in the data sheet for more information.

The LT8312 is available in a low profile, thermally enhanced

16-lead MSOP package.

The LT8312 data sheet gives a complete description of

the part, operation and application information. The data

sheet must be read in conjunction with this demo manual.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2104A

Specifications are at TA = 25°C

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

VIN Input Voltage Range Line Frequency, 47Hz to 63Hz 90 115 265 VAC

VOUT Output Voltage 380 400 420 V

IOUT Maximum Output Current 0.375 A

EFE Efficiency IOUT = 0.375A 115VAC

230VAC

97.5

PF Power Factor IOUT = 0.375A 115VAC

230VAC

0.99

0.98

dc2104af

DEMO MANUAL DC2104A

Quick start proceDure

IMPORTANT NOTE TO CUSTOMERS:

HIGH VOLTAGES ARE PRESENT ON THE DEMO

CIRCUIT, AND CAN LEAD TO LETHAL INJURIES

TO HUMAN BODY. ONLY QUALIFIED PERSONNEL

SHOULD OPERATE IT. IT IS STRONGLY RECOM-

MENDED TO USE SAFETY GLASSES AND AN ISOLA-

TION TRANSFORMER.

NOTE: Improper components replacement on the demo

circuit can cause performance deteriorations, circuit

malfunction, property damage, and even life threatening

injuries. Contact Linear Technology applications engineers

for proper component replacement.

DC2104A is easy to set up to evaluate the performance

of the LT8312. Refer to Figure 1 for proper measurement

equipment setup and follow the procedure below:

1. Connect an adjustable load between + and – output

terminals.

2. With power off, connect the input power supply to Line

(L) input and Neutral (N) input.

3. Turn on the power at the input.

NOTE: Make sure that the input voltage does not exceed

the maximum input voltage (265VAC).

4. Check for the proper output voltage.

Once the proper output voltage is established, adjust the

input voltage and/or the load and observe the output voltage

regulation, efficiency, power factor and other parameters.

Figure 1. Proper Measurement Equipment Setup

dc2104af

DEMO MANUAL DC2104A

Quick start proceDure

Figure 2. Efficiency vs Load Figure 3. Power Factor vs Load

POUT (W)

EFFICIENCY (%)

160

DC2104A F02

92 20 40 60 80 100 140120

93 115VAC

230VAC

POUT (W)

0.85

0.95

160

DC2104A F03

0.75

0.60 20 40 60 80 100 140120

1.00

0.80

0.90

0.70 115VAC

230VAC

Figure 4. 115VAC Input Voltage and Current Figure 5. 230VAC Input Voltage and Current

5ms/DIV DC2104A F04

VIN

100V/DIV

IIN

2A/DIV

5ms/DIV DC2104A F05

VIN

200V/DIV

IIN

1A/DIV

Figure 6. Output Ripple (AC-Coupled), VIN = 115VAC Figure 7. Output Ripple (AC-Coupled), VIN = 230VAC

5ms/DIV DC2104A F06

VOUT

5V/DIV

5ms/DIV DC2104A F07

VOUT

5V/DIV

dc2104af

DEMO MANUAL DC2104A

Figure 8. VIN = 115VAC, Full Load to Half Load Transient Figure 9. VIN = 230VAC, Full Load to Half Load Transient

Quick start proceDure

20ms/DIV DC2104A F08

VOUT

10V/DIV

IOUT

0.2V/DIV

20ms/DIV DC2104A F09

VOUT

10V/DIV

IOUT

0.2V/DIV

Figure 10. VIN = 115VAC, Half Load to Full Load Transient Figure 11. VIN = 230VAC, Half Load to Full Load Transient

20ms/DIV DC2104A F10

VOUT

10V/DIV

IOUT

0.2V/DIV

20ms/DIV DC2104A F11

VOUT

10V/DIV

IOUT

0.2V/DIV

dc2104af

DEMO MANUAL DC2104A

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 B1 BRIDGE RECTIFIER DIODES INC., GBU404

2 1 C1 CAP., FILM, 0.22µF, 275VAC, 10% KEMET, R46KI322000M2K

3 1 C2 CAP., FILM, 0.47µF, 5%, 400V PANASONIC, ECWF4474JL

4 1 C4 CAP, 10µF 20% 50V ALUM RUBYCON, 50YXJ10M 5X11

5 1 C5 CAP., X7R, 680nF, 25V, 10%, 0805 AVX, 08053C684KAT2A

6 1 C6 Cap., C0G, 4.7nF, 100V, 5% 0805 TDK, C2012C0G2A472J125AA

7 1 C7 Cap., C0G, 27pF, 50V, 5% 0805 AVX, 08055A270JAT2A

8 2 C8, C14 CAP., X5R, 4.7µF, 20%, 16V, 0805 AVX, 0805YD475MAT2A

9 1 C10 CAP., ALUM, 100µF, 450V, 20% RUBYCON, 450VXH100MEFCSN22X25

10 1 C12 CAP., FILM, 1.0µF, 5%, 400V PANASONIC, ECWF4105JL

11 1 C13 CAP., C0G, 1nF, 10%, 25V 0805 AVX, 08053A102KAT2A

12 3 C3, C9, C15 CAP., C0G, 100pF, 5%, 25V 0805 AVX, 08055A101JAT2A

13 1 D2 DIODE, 200V, SOD123 DIODES INC., BAV20W

14 1 D3 ZENER DIODE, 24V, SMA CENTRAL SEMI., CMZ5934B

15 1 D4 DIODE, 1A, 600V, DO-41 DIODES INC., 1N4005

16 1 D5 DIODE, 5A, 600V, SMC CENTRAL SEMI., CMR5H-06

17 2 D1, D6 DIODE, SWITCH 100V 400mW, SOD123 DIODES INC., 1N4148W-7-F

18 1 F1 FUSE, FAST ACTING, 3.15A BUSSMAN, SS-5H-3.15A-APH

19 1 L1 CHOKE, 15mH EPCOS, B82734R2232B030

20 1 L3 PFC CHOKE, 450µH WÜRTH ELECTONIK, 760802122

21 1 L4 CHOKE, 300µH WÜRTH ELECTONIK, 7447060

22 1 Q1 N-CH MOSFET, 500V, TO-220 INFINEON, IPA50R190CE

23 2 R1, R2 RES., CHIP., 499K, 1/4W, 1% 1206 VISHAY, CRCW1206499KFKEA

24 1 R3 RES., CHIP., 301K, 1/8W, 1%, 0805 VISHAY, CRCW0805301KFNEA

25 1 R4 RES., CHIP., 11.8K, 1/8W, 1%, 0805 VISHAY, CRCW080511K8FKEA

26 1 R5 RES., CHIP., 24.9K, 1/8W, 1%, 0805 VISHAY, CRCW080524K9FKEA

27 2 R6, R7 RES., CHIP., 150k, 1/4W, 1% 1206 VISHAY, CRCW1206150KFKEA

28 1 R8 RES., CHIP., 2.4M, 1/8W, 5%, 0805 VISHAY, CRCW08052M40JNEA

29 1 R9 RES., CHIP., 47, 1/4W, 5%, 1206 VISHAY, CRCW120647R0JNEA

30 1 R10 RES., CHIP., 2K, 1/8W, 5%, 0805 VISHAY, CRCW08052K00JNEA

31 1 R11 RES., CHIP., 10, 1/8W, 1% 0805 VISHAY, CRCW080510R0FNEA

32 1 R12 RES., CHIP., 9.53K, 1/8W, 1%, 0805 VISHAY, CRCW08059K53FKEA

33 3 R13, R16, R17 RES., CHIP., 1M, 1/4W, 1% 1206 VISHAY, CRCW12061M00FKEA

34 1 R14 RES., CHIP., 100, 1/8W, 1%, 0805 VISHAY, CRCW0805100RJNEA

35 1 R15 RES., CHIP., 0.015, 1W, 1% 1206 VISHAY, WSLP1206R0150FEA

36 1 R18 RES., CHIP., 75K, 1/8W, 1% 0805 VISHAY, CRCW080575K0FKEA

37 1 R19 RES., CHIP., 0, 1/8W, 0805 VISHAY, CRCW08050000Z0EA

38 1 R26 RES., CHIP., 10K, 1/8W, 1% 0805 VISHAY, CRCW080510K0FNEA

39 1 V1 VARISTOR, 300V RMS, 10mm RADIAL BOURNS, MOV-10D471K

40 1 U1 I.C., PFC CONTROLLER MS-16 LINEAR TECH., LT8312EMS#PBF

parts List

dc2104af

DEMO MANUAL DC2104A

parts List

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Additional Demo Board Circuit Components

1 0 C16 (OPT) CAP., FILM, 0.22µF, 275VAC, 10%

2 0 R20-R25 (OPT) RES., CHIP., 1206

Hardware: For Demo Board Only

1 2 J1, J2 CONN., TERM BLOCK PCB 5.0mm 2POS WEIDMULLER, 1715250000

2 1 HS1 HEAT SINK FOR B1 WAKEFIELD-VETTE, 287-1ABE

dc2104af

DEMO MANUAL DC2104A

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

schematic Diagram

C C

B B

A A

NOTES: UNLESS OTHERWISE SPECIFIED,

1. ALL CAPACITORS AND RESISTORS ARE 0805.

400V / 0.375A

90 - 265VAC

B82734R2232B030

INTVCC

VREC

24.9k

300uH

7447060

R26

10k

1206

499k

1206

R13

1206

R18

75k

R20

OPT

1206

0.22uF

275VAC

R46KI322000M2K

4.7uF

16V

R25

OPT

1206

R11

10 1%

R12

9.53k

1N4148W

C14

4.7uF

150k

1206

R15

0.015

1206

GBU404

C12

1uF

400V

ECWF4105JL

15mH

301k 1%

C15

100pF

2.4M 1%

R10

760802122

680nF

R19

4.7nF

100V

3.15A

C16

OPT

499k

1206

C13

1nF

CMR5H-06

R23

OPT

1206

10uF

50V

50YXJ10M 5X11

0.47uF

400V

ECWF4474JL

IPA50R190CE

CMZ5934B

11.8k

BAV20W

LT8312EMS

DCM10

FB 9

VINSENSE

GND

EN_UVLO

SENSE 15

GND

GATE 14

OVP

INTVCC 13

GND 8

GND 7

VREF

VIN11

C10

100uF

450V

R24

OPT

1206

R17

1206

1N4005

R14

100

1N4148W

R22

OPT

1206

27pF

100pF

50V

150k

1206

100pF

R21

OPT

1206

MOV-10D471K

R16

1206

dc2104af

DEMO MANUAL DC2104A

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

 LINEAR TECHNOLOGY CORPORATION 2015

LT 0215 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) 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 LT C 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. LT C 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