DC2104A - Demo Manual

DEMO MANUAL DC2104A
LT8312
Boundary Mode
PFC Controller
Description
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.
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 section 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
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.
Specifications are at TA = 25°C
SYMBOL
PARAMETER
CONDITIONS
VIN
Input Voltage Range
Line Frequency, 47Hz to 63Hz
VOUT
Output Voltage
MIN
TYP
MAX
UNITS
90
115
265
VAC
380
400
420
V
IOUT
Maximum Output Current
EFE
Efficiency
115VAC
IOUT = 0.375A
230VAC
0.375
96
97.5
%
A
PF
Power Factor
115VAC
IOUT = 0.375A
230VAC
0.99
0.98
%
dc2104af
1
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 RECOMMENDED TO USE SAFETY GLASSES AND AN ISOLATION 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
2
dc2104af
DEMO MANUAL DC2104A
99
1.00
98
0.95
97
0.90
96
0.85
PF
EFFICIENCY (%)
Quick Start Procedure
95
0.80
94
0.75
93
92
0.70
115VAC
230VAC
0
20
40
60
0.60
80 100 120 140 160
POUT (W)
115VAC
230VAC
0
20
40
60
80 100 120 140 160
POUT (W)
DC2104A F02
DC2104A F03
Figure 2. Efficiency vs Load
Figure 3. Power Factor vs Load
VIN
100V/DIV
VIN
200V/DIV
IIN
2A/DIV
IIN
1A/DIV
5ms/DIV
DC2104A F04
Figure 4. 115VAC Input Voltage and Current
5ms/DIV
DC2104A F05
Figure 5. 230VAC Input Voltage and Current
VOUT
5V/DIV
VOUT
5V/DIV
5ms/DIV
DC2104A F06
Figure 6. Output Ripple (AC-Coupled), VIN = 115VAC
5ms/DIV
DC2104A F07
Figure 7. Output Ripple (AC-Coupled), VIN = 230VAC
dc2104af
3
DEMO MANUAL DC2104A
Quick Start Procedure
VOUT
10V/DIV
VOUT
10V/DIV
IOUT
0.2V/DIV
IOUT
0.2V/DIV
20ms/DIV
DC2104A F08
Figure 8. VIN = 115VAC, Full Load to Half Load Transient
VOUT
10V/DIV
IOUT
0.2V/DIV
IOUT
0.2V/DIV
DC2104A F10
Figure 10. VIN = 115VAC, Half Load to Full Load Transient
DC2104A F09
Figure 9. VIN = 230VAC, Full Load to Half Load Transient
VOUT
10V/DIV
20ms/DIV
4
20ms/DIV
20ms/DIV
DC2104A F11
Figure 11. VIN = 230VAC, Half Load to Full Load Transient
dc2104af
DEMO MANUAL DC2104A
Parts List
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
dc2104af
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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
6
dc2104af
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
A
B
C
OPT
C16
B1
GBU404
3
C1
1
4
C13
1nF
R5
24.9k
1%
R4
11.8k
1%
75k
R18
C3
100pF
R8
2.4M 1%
1N4148W
D1
301k 1%
R7
150k
1%
1206
R2
499k
1%
1206
R3
R6
150k
1%
1206
R1
499k
1%
1206
300uH
C12
1uF
C2
400V
0.47uF
ECWF4105JL
400V
ECWF4474JL
VREC
5
4
1. ALL CAPACITORS AND RESISTORS ARE 0805.
C5
680nF
3
2
1
5
4
12
16
C14
4.7uF
R26
10k
1%
GND
GND
GND
OVP
VREF
EN_UVLO
VINSENSE
GND
GND
INTVCC
SENSE
GATE
FB
100V
4.7nF
C6
10uF
50V
50YXJ10M 5X11
C4
BAV20W
D2
CMZ5934B
D3
47
1206
R9
D6
C8
4.7uF
16V
INTVCC
10
3
1%
R12
9.53k
0
R19
L3
760802122
1N4148W
R11
LT8312EMS
U1
7
8
13
15
14
9
R10
2k
C7
27pF
3
R25
2
OPT
1206
R24
R23
OPT
1206
OPT
1206
OPT
1206
OPT
1206
OPT
1206
R21
R20
100
R14
IPA50R190CE
R22
1M
1206
Q1
R16
1M
1206
R15
0.015
1206
CMR5H-06
D5
2
R13
1N4005
D4
C9
100pF
50V
C15
100pF
3
7
L4
7447060
4
NOTES: UNLESS OTHERWISE SPECIFIED,
90 - 265VAC
J1
F1
3.15A
MOV-10D471K
V1
0.22uF
275VAC
R46KI322000M2K
2
3
L1
15mH
B82734R2232B030
2
1
12
6
D
1
+
-
4
2
L
N
+
11
VIN
VC
6
10
DCM
5
C10
100uF
450V
VREC
+
R17
1M
1206
J2
-
+
400V / 0.375A
2
1
1
1
A
B
C
D
DEMO MANUAL DC2104A
Schematic Diagram
dc2104af
7
DEMO MANUAL DC2104A
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 application engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
8
dc2104af
Linear Technology Corporation
LT 0215 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
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