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Linear Technology DC2104A Demo Manual
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Linear Technology DC2104A Demo Manual

Lt8312 boundary mode pfc controller
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Description
Demonstration Circuit 2104A is an off-line boundary
conduction mode power factor correction (PFC) boost
converter featuring the
LT
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
SYMBOL
PARAMETER
V
Input Voltage Range
IN
V
Output Voltage
OUT
I
Maximum Output Current
OUT
EFE
Efficiency
PF
Power Factor
8312. Boundary conduction
®
Specifications are at T
CONDITIONS
Line Frequency, 47Hz to 63Hz
I
= 0.375A
OUT
I
= 0.375A
OUT
DEMO MANUAL DC2104A
Boundary Mode
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
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.
= 25°C
A
MIN
380
0.375
115VAC
230VAC
115VAC
230VAC
LT8312
PFC Controller
TYP
MAX
90
115
265
400
420
96
97.5
0.99
0.98
UNITS
VAC
V
A
%
%
dc2104af
1

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Summary of Contents for Linear Technology DC2104A

  • Page 1 (>0.95) enabling the design to be used worldwide. It is also designed to comply with the IEC61000-3-2 Class-D L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear harmonics standard and the EN55022 conducted EMI Technology Corporation.

  • Page 2: Quick Start Procedure

    DEMO MANUAL DC2104A Quick start proceDure IMPORTANT NOTE TO CUSTOMERS: DC2104A is easy to set up to evaluate the performance of the LT8312. Refer to Figure 1 for proper measurement HIGH VOLTAGES ARE PRESENT ON THE DEMO equipment setup and follow the procedure below: CIRCUIT, AND CAN LEAD TO LETHAL INJURIES TO HUMAN BODY.
  • Page 3 DEMO MANUAL DC2104A Quick start proceDure 1.00 0.95 0.90 0.85 0.80 0.75 0.70 115VAC 115VAC 230VAC 230VAC 0.60 DC2104A F02 DC2104A F03 Figure 2. Efficiency vs Load Figure 3. Power Factor vs Load 100V/DIV 200V/DIV 2A/DIV 1A/DIV DC2104A F04 DC2104A F05...
  • Page 4 DEMO MANUAL DC2104A Quick start proceDure 10V/DIV 10V/DIV 0.2V/DIV 0.2V/DIV DC2104A F09 DC2104A F08 20ms/DIV 20ms/DIV Figure 8. V = 115VAC, Full Load to Half Load Transient Figure 9. V = 230VAC, Full Load to Half Load Transient 10V/DIV 10V/DIV 0.2V/DIV...

  • Page 5: Parts List

    DEMO MANUAL DC2104A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components BRIDGE RECTIFIER DIODES INC., GBU404 CAP., FILM, 0.22µF, 275VAC, 10% KEMET, R46KI322000M2K CAP., FILM, 0.47µF, 5%, 400V PANASONIC, ECWF4474JL CAP, 10µF 20% 50V ALUM RUBYCON, 50YXJ10M 5X11 CAP., X7R, 680nF, 25V, 10%, 0805...
  • Page 6 DEMO MANUAL DC2104A parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Additional Demo Board Circuit Components C16 (OPT) CAP., FILM, 0.22µF, 275VAC, 10% R20-R25 (OPT) RES., CHIP., 1206 Hardware: For Demo Board Only J1, J2 CONN., TERM BLOCK PCB 5.0mm 2POS...

  • Page 7: Schematic Diagram

    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.
  • Page 8 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.
  • Page 9 X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for category: Power Management IC Development Tools Click to view products by manufacturer: Analog Devices Other Similar products are found below : EVAL-ADM1168LQEBZ EVB-EP5348UI MIC23451-AAAYFL EV MIC5281YMME EV DA9063-EVAL ADP122-3.3-EVALZ ADP130- 0.8-EVALZ ADP130-1.2-EVALZ ADP130-1.5-EVALZ ADP130-1.8-EVALZ ADP1714-3.3-EVALZ ADP1716-2.5-EVALZ ADP1740-1.5- EVALZ ADP1752-1.5-EVALZ ADP1828LC-EVALZ ADP1870-0.3-EVALZ ADP1871-0.6-EVALZ ADP1873-0.6-EVALZ ADP1874-0.3- EVALZ ADP1882-1.0-EVALZ ADP199CB-EVALZ ADP2102-1.25-EVALZ ADP2102-1.875EVALZ ADP2102-1.8-EVALZ ADP2102-2-...