Design Example Report Title 8.4 W CV/CC LED Driver

Design Example Report
Title
8.4 W CV/CC LED Driver Using LNK606PG
Specification 85 – 265 VAC Input; 12 V, 0.7 A Output
Application
Low Cost LED Driver
Author
Applications Engineering Department
Document
Number
DER-215
Date
May 1, 2009
Revision
1.0
Summary and Features
•
•
Revolutionary control concept provides very low cost, low part count solution
• Primary side control eliminates secondary side control and optocoupler
• Provides ±5% CV and ±10% CC accuracy
• Over-temperature protection – tight tolerance (±5%) with hysteretic recovery for safe
PCB temperature under all conditions
• Auto-restart output short circuit and open-loop protection
• Extended pin creepage distance for reliable operation in humid environments –
>3.2 mm minimum at package
EcoSmart® – Easily meets all current international energy efficiency standards – China
(CECP) / CEC / ENERGRY STAR EPS v2 / EU CoC / EISA 2007
• No-load consumption <100 mW at 265 VAC
PATENT INFORMATION
The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered
by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A
complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under
certain patent rights as set forth at <http://www.powerint.com/ip.htm>.
Power Integrations
5245 Hellyer Avenue, San Jose, CA 95138 USA.
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
Table of Contents
1
2
3
4
Introduction.................................................................................................................3
Power Supply Specification ........................................................................................4
Schematic...................................................................................................................5
Circuit Description ......................................................................................................6
4.1
Input Filter ...........................................................................................................6
4.2
LNK 606 Primary .................................................................................................6
4.3
Output Rectification .............................................................................................6
4.4
Output Regulation ...............................................................................................6
5 PCB Layout ................................................................................................................7
6 Bill of Materials ...........................................................................................................8
7 Transformer Specification...........................................................................................9
7.1
Electrical Diagram ...............................................................................................9
7.2
Electrical Specifications.......................................................................................9
7.3
Materials..............................................................................................................9
7.4
Transformer Build Diagram ...............................................................................10
7.5
Transformer Construction..................................................................................10
8 Transformer Design Spreadsheet.............................................................................11
9 Performance Data ....................................................................................................14
9.1
Efficiency ...........................................................................................................14
9.2
Active Mode Efficiency ......................................................................................15
9.3
Energy Efficiency Requirements .......................................................................15
9.3.1
USA Energy Independence and Security Act 2007 ....................................16
9.3.2
ENERGY STAR EPS Version 2.0 ..............................................................16
9.4
No-Load Input Power ........................................................................................17
9.5
Regulation .........................................................................................................17
9.5.1
Load ...........................................................................................................17
10
Thermal Performance ...........................................................................................18
11
Waveforms............................................................................................................19
11.1 Drain Voltage and Current, Normal Operation...................................................19
11.2 Output Voltage Start-up Profile..........................................................................19
11.3 Drain Voltage and Current Start-up Profile ........................................................20
11.4 Output Ripple Measurements............................................................................21
11.4.1 Ripple Measurement Technique ................................................................21
11.4.2 Measurement Results ................................................................................22
12
Conducted EMI .....................................................................................................23
13
Revision History ....................................................................................................25
Important Note:
Although this board is designed to satisfy safety isolation requirements, the engineering
prototype has not been agency approved. Therefore, all testing should be performed
using an isolation transformer to provide the AC input to the prototype board.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 2 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
1 Introduction
This report describes an 8.4 W CV/CC, universal input, power supply for LED
Applications. A LNK606PG from the LinkSwitch-II family was used.
Assembled PCB
Page 3 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
2 Power Supply Specification
Description
Input
Voltage
Frequency
No-load Input Power (230 VAC)
Output
Output Voltage 1
Output Ripple Voltage 1
Output Current 1
Total Output Power
Continuous Output Power
Symbol
Min
Typ
Max
Units
Comment
VIN
fLINE
85
47
265
64
250
VAC
Hz
mW
2 Wire – no P.E.
50/60
VOUT1
VRIPPLE1
IOUT1
11.4
12.6
V
mV
mA
630
12.00
150
700
770
±5%
20 MHz bandwidth
±10%
POUT
8.4
W
η
80
%
Average POUT, 25 C (230 VAC)
%
Per ENERGRY STAR EPS v2
Efficiency
Full Load
Required average efficiency at
25, 50, 75 and 100 % of POUT
ηCEC
76
o
Environmental
Conducted EMI
Meets CISPR22B / EN55022B
Designed to meet IEC950, UL1950
Class II
Safety
Surge
Differential Mode
Common Mode
Ambient Temperature
kV
kV
TAMB
0
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
50
o
C
1.2/50 µs surge, IEC 1000-4-5,
Series Impedance:
Differential Mode: 2 Ω
Common Mode: 12 Ω
External case ambient, free
convection, sea level
Page 4 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
3 Schematic
Figure 1 – LED Driver Circuit Schematic.
Page 5 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
4 Circuit Description
This circuit is configured as a primary-side regulated flyback power supply utilizing the
LNK606PG.
4.1 Input Filter
AC input power is rectified by diodes D1 through D4. The rectified DC is filtered by the
bulk storage capacitors C1 and C2. Components L1, L2, C1 and C2 form a pi (π) filter,
which attenuates conducted differential-mode EMI noise. Resistors R1 and R2 damp any
ringing between L1 (L2) and C1 (C2) and improve EMI.
4.2 LNK 606 Primary
The LNK606 device (U1) incorporates the power switching device, oscillator, CC/CV
control engine, startup, and protection functions. The integrated 700 V MOSFET allows
for sufficient voltage margin in universal input AC applications. The device is powered
from the BP pin via the decoupling capacitor C4.
The rectified and filtered input voltage is applied to one end of the primary winding of T1.
The other side of the transformer’s primary winding is driven by the integrated MOSFET
in U1. The leakage inductance drain voltage spike is limited by an RCD-R clamp
consisting of D5, R3, R4, and C3.
D5 is used to protect the IC from negative ringing (drain voltage below source voltage)
when the MOSFET is off, due to the high value of the transformer’s VOR.
4.3 Output Rectification
The secondary of the transformer is rectified by D7, a Schottky barrier type for higher
efficiency, and filtered by C7 and C8. In this application, Resistor R8 and C6 damp high
frequency ringing and improve conducted and radiated EMI.
4.4 Output Regulation
The LNK606 regulates the output using On/Off control in the constant voltage (CV)
regulation region of the output characteristic and frequency control for constant current
(CC) regulation. The output voltage is sensed by a bias winding on the transformer. The
feedback resistors (R5 and R6) were selected using standard 1% resistor values to
center both the nominal output voltage and constant current regulation thresholds. The
feedback resistors need to be tuned if the same design is used with and without a bias
winding.
Resistor R9 provides a minimum load to maintain output regulation. This resistor is only
for a self biased design. If the bias winding supply (D6, C5 and R7) is used no pre-load
resistor is needed as the energy is absorbed by the bias winding.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 6 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
5 PCB Layout
Figure 2 – Printed Circuit Layout.
Note: A location for a 0.1 µF x-capacitor is shown on the PCB. This was not populated
during testing nor is required to provide the EMI results shown.
Page 7 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
6 Bill of Materials
Item
Qty
Ref
Des
1
1
C1
4.7 µF, 400 V, Electrolytic, (8 x 11.5)
TAQ2G4R7MK0811MLL3
Taicon Corporation
2
1
C2
22 µF, 400 V, Electrolytic, (12.5 x 18)
Not Provided
Samxon
Kemet
Description
Mfg Part Number
Mfg
3
1
C3
1 nF, 1000 V, Ceramic, X7R, 0805
C0805C102KDRACTU
4
1
C4
1 µF, 25 V, Ceramic, X7R, 1206
ECJ-3YB1E105K
Panasonic
5
1
C5
10 µF, 25 V, Ceramic, X7R, 1206
ECJ-3YB1E106M
Panasonic
6
1
C6
2.2 nF, 50 V, Ceramic, X7R, 0805
ECJ-2VB1H222K
Panasonic
7
8
2
1
470 µF, 16 V, Electrolytic, Low ESR, 90 mΩ,
(10 x 12.5)
1 nF, Ceramic, Y1
ELXZ160ELL471MJC5S
ECK-DNA102MB
Nippon Chemi-Con
Panasonic
10
5
C7 C8
C9
D1 D2
D3 D4
D5
1000 V, 1 A, Rectifier, DO-41
1N4007-E3/54
Vishay
11
1
D6
75 V, 0.15 A, Fast Switching, 4 ns, MELF
LL4148-13
Diode Inc.
12
1
D7
60 V, 3 A, Schottky, DO-201AD
SB360
Vishay
13
1
D8
400 V, 1 A, Ultrafast Recovery, 50 ns, DO-41
UF4004-E3
Vishay
14
2
L1 L2
2200 µH, 0.21 A
SBC4-222-211
Tokin
15
2
R1 R2
5.1 kΩ, 5%, 1/4 W, Metal Film, 1206
ERJ-8GEYJ512V
Panasonic
16
1
R3
330 kΩ, 5%, 1/4 W, Metal Film, 1206
ERJ-8GEYJ334V
Panasonic
17
1
R4
300 Ω, 5%, 1/4 W, Metal Film, 1206
ERJ-8GEYJ301V
Panasonic
18
1
R5
30 kΩ, 5%, 1/8 W, Metal Film, 0805
ERJ-6GEYJ303V
Panasonic
19
1
R6
5.62 kΩ, 1%, 1/4 W, Metal Film, 1206
ERJ-8ENF5621V
Panasonic
20
1
R7
7.5 kΩ, 5%, 1/8 W, Metal Film, 0805
ERJ-6GEYJ752V
Panasonic
21
1
R8
100 Ω, 5%, 1/8 W, Metal Film, 0805
ERJ-6GEYJ101V
Panasonic
5.6 kΩ, 5%, 1/8 W, Metal Film, 0805
ERJ-6GEYJ562V
Panasonic
10 Ω, 2 W, Fusible/Flame Proof Wire Wound
Bobbin, EF16, Horizontal, 8 pin, extended
creepage
LinkSwitch-II, LNK606PG, CV/CC, DIP-8C
CRF253-4 10R
Vitrohm
SP 1738 K
LNK606PG
Kaschke
Power Integrations
22
1
R9
23
1
RF1
24
25
1
1
T1
U1
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 8 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
7 Transformer Specification
7.1
Electrical Diagram
1
WD #1
Cancellation
8
WD # 5
Secondary
13 T TIW
27 T X 2
NC
1
7
WD #2
Primary
141 T
3
4
WD#3
Shield
12 T X4
2
Figure 3 – Transformer Electrical Diagram.
7.2
Electrical Specifications
Electrical Strength
Primary Inductance
Resonant Frequency
Primary Leakage
Inductance
7.3
60 second, 60Hz, from pins 1-5 to pins 6-10
Pins 1-3, all other windings open, measured at
100 kHz, 0.4 VRMS
Pins 1-3, all other winding open
Pins 1-3, with pins 7-8 shorted, measured at 100 kHz,
0.4 VRMS
3000 VAC
1.714 mH, ±10%
500 kHz (min)
70 µH (max)
Materials
Item
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Page 9 of 26
Description
Core: PC44, gapped for AL of 86 nH/t2
Bobbin: Horizontal 8 pin, EF16, extended creepage
Magnet Wire: 0.15 mm diameter
Magnet Wire: 0.20 mm diameter
Triple Insulated Wire: 0.45mm diameter
Tape, 3M
Varnish
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
7.4
01-May-09
Transformer Build Diagram
7
WD #4 Secondary
8
4
2
WD#3 Bias
1
WD#2 Primary
3
WD#1 Cancellation
1
Figure 4 – Transformer Build Diagram.
7.5
Transformer Construction
Bobbin
Preparation
WD1
Shield
Insulation
WD2
Primary
Insulation
WD3
Bias
Primary side of the bobbin is placed on the left hand side, and secondary side of the
bobbin is placed on the right hand side.
Primary pin side of the bobbin oriented to left hand side. Start at pin 1. Wind 27 bifilar
turns of item [3] from left to right. Wind with tight tension across bobbin evenly. Cut at the
end.
2 Layers of tape [6] for insulation.
Start at Pin 3. Wind 54 turns of item [3] from left to right. Apply one layer of tape [6]. Then
wind another 54 turns on the next layer from right to left. Apply one layer of tape [6]. Wind
the last 33 turns from left to right. Terminate on pin 1. Wind with tight tension and spread
turns across bobbin evenly.
2 layers of tape [6] for basic insulation.
Starting at pin 5 temporarily, wind 12 trifilar turns of item [4]. Wind from right to left with
tight tension spreading turns across entire bobbin width. Finish on pin 2. Flip the starting
lead to pin 4.
Insulation
2 layers of tape [6] for basic insulation.
WD4
Secondary
Start at pin 8 wind 13 turns of item [5] from right to left. Spread turns evenly across
bobbin. Finish on pin 7.
Insulation
2 layers of tape item [6].
Finish
Grind the core to get 1.714mH. Secure the core with tape. Vanish [7].
Note: Tape between adjacent primary winding layers reduces primary capacitance and losses.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 10 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
8 Transformer Design Spreadsheet
ACDC_LinkSwitchII_040908; Rev.1.1;
Copyright Power
Integrations 2008
INPUT
ENTER APPLICATION VARIABLES
VACMIN
85
VACMAX
265
fL
50
VO
12
IO
0.7
Power
n
INFO
OUTPUT
V
V
Hz
V
A
Warning
0.76
8.40
0.50
tC
Add Bias Winding
3.00
NO
26.7
VDS
VD
KP
Warning
3
FEEDBACK WINDING PARAMETERS
NFB
VFLY
VFOR
ms
uF
ENTER LinkSwitch-II VARIABLES
LNK606
Chosen Device
PG
Package
ILIMITMIN
ILIMITTYP
ILIMITMAX
FS
67.5
VOR
W
0.76
Z
CIN
UNIT
LNK606
PG
0.39
0.41
0.45
67.50
A
A
A
kHz
135.58
V
3.00
0.50
1.88
V
V
ACDC_LinkSwitch-II_040908_Rev1-0.xls;
LinkSwitch-II Discontinuous Flyback
Transformer Design Spreadsheet
Minimum AC Input Voltage
Maximum AC Input Voltage
AC Mains Frequency
Output Voltage (at continuous power)
Power Supply Output Current (corresponding
to peak power)
!!! Warning. Continuous Output power is too
high. Use larger LinkSwitch-II device
Efficiency Estimate at output terminals. Under
0.7 if no better data available
Z Factor. Ratio of secondary side losses to the
total losses in the power supply. Use 0.5 if no
better data available
Bridge Rectifier Conduction Time Estimate
Choose Yes to add a Bias winding to power the
LinkSwitch-II.
Input Capacitance
Chosen LinkSwitch-II device
Select package (PG, GG or DG)
Minimum Current Limit
Typical Current Limit
Maximum Current Limit
Typical Device Switching Frequency at
maximum power
!!! Warning. Reflected Output Voltage too high.
Increase DCON or Increase FSMAX
LinkSwitch-II on-state Drain to Source Voltage
Output Winding Diode Forward Voltage Drop
Ensure KDP > 1.3 for discontinuous mode
operation
12.00
11.54
7.92
V
V
BIAS WINDING PARAMETERS
VB
N/A
V
NB
N/A
Output Voltage is greater than 10 V. The
feedback winding itself can be used to provide
exteral bias to the LinkSwitch. Additional Bias
winding is not required.
Bias Winding number of turns
4.50
6.46
us
us
30.79
5.69
k-ohm
k-ohm
Output diode conduction time
LinkSwitch-II On-time (calculated at minimum
inductance)
Upper resistor in Feedback resistor divider
Lower resistor in resistor divider
DESIGN PARAMETERS
DCON
TON
RUPPER
RLOWER
4.5
ENTER TRANSFORMER CORE/CONSTRUCTION VARIABLES
Core Type
EF16
EF16
Core
Bobbin
Page 11 of 26
EF16_
Feedback winding turns
Flyback Voltage
Forward voltage
Enter Transformer Core. Based on the output
power the recommended core sizes are EEL19
or EEL22
Generic EF16_BOBBIN
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
BOBBIN
20.10
37.60
1100.00
10.00
0.00
AE
LE
AL
BW
M
L
NS
3
mm^2
mm^2
nH/turn^2
mm
mm
3.00
13.00
DC INPUT VOLTAGE PARAMETERS
VMIN
VMAX
V
V
Minimum DC bus voltage
Maximum DC bus voltage
0.44
0.12
0.39
0.39
0.17
A
A
A
A
Maximum duty cycle measured at VMIN
Input Average current
Peak primary current
Primary ripple current
Primary RMS current
TRANSFORMER PRIMARY DESIGN PARAMETERS
LPMIN
LPTYP
LP_TOLERANCE
NP
1542.94
1714.38
10.00
141.00
uH
uH
ALG
BM_TARGET
BM
86.23
2490.00
2480.14
nH/turn^2
Gauss
Gauss
3000.97
Gauss
BAC
1240.07
Gauss
ur
LG
BWE
OD
163.75
0.30
30.00
0.21
mm
mm
mm
BP
Warning
Core Effective Cross Sectional Area
Core Effective Path Length
Ungapped Core Effective Inductance
Bobbin Physical Winding Width
Safety Margin Width (Half the Primary to
Secondary Creepage Distance)
Number of Primary Layers
Number of Secondary Turns. To adjust
Secondary number of turns change DCON
93.03
374.77
CURRENT WAVEFORM SHAPE PARAMETERS
DMAX
IAVG
IP
IR
IRMS
2490
01-May-09
INS
0.04
DIA
AWG
0.17
34.00
CM
CMA
40.32
234.48
TRANSFORMER SECONDARY DESIGN PARAMETERS
Lumped parameters
ISP
ISRMS
IRIPPLE
CMS
4.22
1.54
1.38
308.96
AWGS
25.00
VOLTAGE STRESS PARAMETERS
VDRAIN
679.48
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
mm
Minimum Primary Inductance
Typical Primary inductance
Tolerance in primary inductance
Primary number of turns. To adjust Primary
number of turns change BM_TARGET
Gapped Core Effective Inductance
Target Flux Density
Maximum Operating Flux Density (calculated at
nominal inductance), BM < 2500 is
recommended
!!! Warning. Peak Flux density exceeds 3000
Gauss and is not recommended. Reduce BP
by increasing NS
AC Flux Density for Core Loss Curves (0.5 X
Peak to Peak)
Relative Permeability of Ungapped Core
Gap Length (LG > 0.1 mm)
Effective Bobbin Width
Maximum Primary Wire Diameter including
insulation
Estimated Total Insulation Thickness (= 2 * film
thickness)
Bare conductor diameter
Primary Wire Gauge (Rounded to next smaller
standard AWG value)
Bare conductor effective area in circular mils
Primary Winding Current Capacity (200 < CMA
< 500)
A
A
A
Peak Secondary Current
Secondary RMS Current
Output Capacitor RMS Ripple Current
Secondary Bare Conductor minimum circular
mils
Secondary Wire Gauge (Rounded up to next
larger standard AWG value)
V
Maximum Drain Voltage Estimate (Assumes
20% clamping voltage tolerance and an
additional 10% temperature tolerance)
Page 12 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
PIVS
46.55
V
FINE TUNING
RUPPER_ACTUAL
30
k-ohm
RLOWER_ACTUAL
5,6
k-ohm
Actual (Measured) Output
Voltage (VDC)
Actual (Measured) Output
Current (ADC)
RUPPER_FINE
RLOWER_FINE
V
Output Rectifier Maximum Peak Inverse
Voltage
Actual Value of upper resistor (RUPPER) used
on PCB
Actual Value of lower resistor (RLOWER) used
on PCB
Measured Output voltage from first prototype
Amps
Measured Output current from first prototype
30.00
k-ohm
5.60
k-ohm
New value of Upper resistor (RUPPER) in
Feedback resistor divider. Nearest standard
value is 30,1 k-ohms
New value of Lower resistor (RLOWER) in
Feedback resistor divider. Nearest standard
value is 5,62 k-ohms
Note: Spreadsheet values may be different from values generated from different
spreadsheet revisions.
The spreadsheet flags 3 warnings:
1) PO – The data sheet figures for maximum output power is 6 W. This power was
recommended for a 5 V output. As this design is for a 12 V output and the thermal
performance is acceptable, this warning can be ignored.
2) VOR – This warning appears if VOR > 135 V. As in this design, the peak drain
voltage VDRAIN < 680 V, this warning can be ignored.
3) BP – This warning shows up if BP > 3000 Gauss. In this design, this guideline is
only slightly violated. Since no transformer saturation was seen, this warning can
be ignored.
Page 13 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
9 Performance Data
All measurements performed at room temperature unless otherwise specified, 50 Hz
input frequency.
9.1
Efficiency
83
82
Efficiency (%)
81
80
85 VAC
110 VAC
230 VAC
265 VAC
79
78
77
76
75
0
100
200
300
400
500
600
700
800
Load Current (mA)
Figure 5 – Efficiency vs. Output Power.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 14 of 26
01-May-09
9.2
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
Active Mode Efficiency
Percent of Full
Load
25
50
75
100
Average
US EISA (2007)
requirement
ENERGY STAR 2.0
requirement
Efficiency (%)
115 VAC
230 VAC
78.8
80.4
79.8
79.3
79.6
77.5
80.3
81.3
81.6
80.1
79.5
79.5
Figure 6 – Efficiency vs. Input Voltage and Load, Room Temperature, 50 Hz.
9.3 Energy Efficiency Requirements
The external power supply requirements below all require meeting active mode efficiency
and no-load input power limits. Minimum active mode efficiency is defined as the
average efficiency of 25, 50, 75 and 100% of output current (based on the nameplate
output current rating).
For adapters that are single input voltage only then the measurement is made at the
rated single nominal input voltage (115 VAC or 230 VAC), for universal input adapters the
measurement is made at both nominal input voltages (115 VAC and 230 VAC).
To meet the standard the measured average efficiency (or efficiencies for universal input
supplies) must be greater than or equal to the efficiency specified by the standard.
The test method can be found here:
http://www.energystar.gov/ia/partners/prod_development/downloads/power_supplies/EP
SupplyEffic_TestMethod_0804.pdf
For the latest up to date information please visit the PI Green Room:
http://www.powerint.com/greenroom/regulations.htm
Page 15 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
9.3.1 USA Energy Independence and Security Act 2007
This legislation mandates all single output single output adapters, including those
provided with products, manufactured on or after July 1st, 2008 must meet minimum
active mode efficiency and no load input power limits.
Active Mode Efficiency Standard Models
Nameplate Output (PO)
Minimum Efficiency in Active Mode of Operation
0.5 × PO
0.09 × ln (PO) + 0.5
0.85
ln = natural logarithm
<1W
≥ 1 W to ≤ 51 W
> 51 W
No-load Energy Consumption
Nameplate Output (PO)
Maximum Power for No-load AC-DC EPS
All
≤ 0.5 W
This requirement supersedes the legislation from individual US States (for example CEC
in California).
9.3.2 ENERGY STAR EPS Version 2.0
This specification takes effect on November 1st, 2008.
Active Mode Efficiency Standard Models
Nameplate Output (PO)
Minimum Efficiency in Active Mode of Operation
≤1W
> 1 W to ≤ 49 W
> 49 W
0.48 × PO + 0.14
0.0626 × ln (PO) + 0.622
0.87
ln = natural logarithm
Active Mode Efficiency Low Voltage Models (VO<6 V and IO ≥ 550 mA)
Nameplate Output (PO)
Minimum Efficiency in Active Mode of Operation
≤1W
> 1 W to ≤ 49 W
> 49 W
0.497 × PO + 0.067
0.075 × ln (PO) + 0.561
0.86
ln = natural logarithm
No-load Energy Consumption (both models)
Nameplate Output (PO)
Maximum Power for No-load AC-DC EPS
0 to < 50 W
≥ 50 W to ≤ 250 W
≤ 0.3 W
≤ 0.5 W
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 16 of 26
01-May-09
9.4
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
No-Load Input Power
0.1
0.09
0.08
Power (W)
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
85
110
230
265
Input Voltage (VAC)
Figure 7 – Zero Load Input Power vs. Input Line Voltage, Room Temperature, 50 Hz.
9.5
Regulation
9.5.1 Load
14
12
Voltage (V)
10
85 VAC
110 VAC
230 VAC
265 VAC
8
6
4
2
0
0
100
200
300
400
500
600
700
800
Current (mA)
Figure 8 – Typical CC/CV Characteristic at Ambient Temperature.
Page 17 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
10 Thermal Performance
Measurements made at full load, 50Hz electric system.
Item
115 VAC
230 VAC
Ambient
25 0C
25 0C
LNK606PG (U1)
52 0C
56 0C
T1 Transformer
49 0C
50 0C
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 18 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
11 Waveforms
11.1 Drain Voltage and Current, Normal Operation
Figure 9 – 85 VAC, Full Load.
Upper: VDRAIN, 200 V / div.
Lower: IDRAIN, 200 mA / div, 10 µs / div.
Figure 10 – 265 VAC, Full Load.
Upper: VDRAIN, 200 V / div.
Lower: IDRAIN, 200 mA / div, 10 us / div.
11.2 Output Voltage Start-up Profile
Figure 11 – Start-up Profile (Full load), 85 VAC
5 V, 20 ms / div.
Page 19 of 26
Figure 12 – Start-up Profile (Full Load), 265 VAC
5 V, 20 ms / div.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
11.3 Drain Voltage and Current Start-up Profile
Figure 13 – 85 VAC Input and Maximum Load.
Upper: VDRAIN, 200 V & 1 ms / div.
Lower: IDRAIN, 200 mA / div.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Figure 14 – 265 VAC Input and Maximum Load.
Upper: VDRAIN, 200 V & 1 ms / div.
Lower: IDRAIN, 200 mA / div.
Page 20 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
11.4 Output Ripple Measurements
11.4.1 Ripple Measurement Technique
For DC output ripple measurements, a modified oscilloscope test probe must be utilized
in order to reduce spurious signals due to pickup. Details of the probe modification are
provided below.
The 5125BA probe adapter is affixed with two capacitors tied in parallel across the probe
tip. The capacitors include one (1) 0.1 µF/50 V ceramic type and one (1) 10 µF/50 V
aluminum electrolytic. The aluminum electrolytic type capacitor is polarized, so
proper polarity across DC outputs must be maintained (see below).
Probe Ground
Probe Tip
Figure 15 – Oscilloscope Probe Prepared for Ripple Measurement (End Cap and Ground Lead Removed).
Figure 16 – Oscilloscope Probe with Probe Master 5125BA BNC Adapter (Modified with Wires for Probe
Ground for Ripple measurement and Two Parallel Decoupling Capacitors Added).
Page 21 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
11.4.2 Measurement Results
Figure 17 – Ripple, 85 VAC, Full Load, 50 mV, 1 ms / div.
Figure 18 – Ripple, 265 VAC, Full Load, 50 mV, 1 ms / div.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 22 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
12 Conducted EMI
All Conducted EMI tests were made using the artificial hand connected to the secondary
return.
Figure 19 – Conducted EMI, 115 VAC, Line, Full load, EN55022Q: QP Limit; EN55022A: Average Limit;
Blue: QP Scan; Black: Average Scan.
Figure 20 – Conducted EMI, 115 VAC, Neutral, Full Load, EN55022Q: QP Limit; EN55022A: Average
Limit; Blue: QP Scan; Black: Average Scan.
Page 23 of 26
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
Figure 21 – Conducted EMI, 230 VAC, Line, Full Load, EN55022Q: QP limit; EN55022A: Average Limit;
Blue: QP Scan; Black: Average Scan.
Figure 22 – Conducted EMI, 230 VAC, Neutral, Full load, EN55022Q: QP Limit; EN55022A: Average Limit;
Blue: QP Scan; Black: Average Scan.
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
Page 24 of 26
01-May-09
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
13 Revision History
Date
01-May-09
Page 25 of 26
Author
RP
Revision
1.0
Description & changes
Initial Release
Reviewed
Apps & Mktg
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
DER-215 12 V, 0.7 A, LNK606PG CV/CC LED Driver
01-May-09
For the latest updates, visit our website: www.powerint.com
Power Integrations reserves the right to make changes to its products at any time to improve reliability or
manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit
described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL
WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS.
PATENT INFORMATION
The products and applications illustrated herein (including transformer construction and circuits external to the products)
may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications
assigned to Power Integrations. A complete list of Power Integrations’ patents may be found at www.powerint.com.
Power Integrations grants its customers a license under certain patent rights as set forth at
http://www.powerint.com/ip.htm.
The PI Logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, PeakSwitch, EcoSmart, Clampless, E-Shield, Filterfuse, StackFET,
PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective
companies. ©Copyright 2009 Power Integrations, Inc.
Power Integrations Worldwide Sales Support Locations
WORLD HEADQUARTERS
5245 Hellyer Avenue
San Jose, CA 95138, USA.
Main: +1-408-414-9200
Customer Service:
Phone: +1-408-414-9665
Fax: +1-408-414-9765
e-mail: usasales@powerint.com
GERMANY
Rueckertstrasse 3
D-80336, Munich
Germany
Phone: +49-89-5527-3911
Fax: +49-89-5527-3920
e-mail: eurosales@powerint.com
JAPAN
Kosei Dai-3 Bldg.,
2-12-11, Shin-Yokohama,
Kohoku-ku, Yokohama-shi,
Kanagawa 222-0033
Phone: +81-45-471-1021
Fax: +81-45-471-3717
e-mail:
japansales@powerint.com
TAIWAN
5F, No. 318, Nei Hu Rd., Sec. 1
Nei Hu Dist.
Taipei, Taiwan 114, R.O.C.
Phone: +886-2-2659-4570
Fax: +886-2-2659-4550
e-mail:
taiwansales@powerint.com
CHINA (SHANGHAI)
Rm 1601/1610, Tower 1,
Kerry Everbright City
No. 218 Tianmu Road West,
Shanghai, P.R.C. 200070
Phone: +86-21-6354-6323
Fax: +86-21-6354-6325
e-mail:
chinasales@powerint.com
INDIA
#1, 14th Main Road
Vasanthanagar
Bangalore-560052 India
Phone: +91-80-41138020
Fax: +91-80-41138023
e-mail: indiasales@powerint.com
KOREA
RM 602, 6FL
Korea City Air Terminal B/D,
159-6
Samsung-Dong, KangnamGu,
Seoul, 135-728, Korea
Phone: +82-2-2016-6610
Fax: +82-2-2016-6630
e-mail:
koreasales@powerint.com
UNITED KINGDOM
1st Floor, St. James’s House
East Street, Farnham
Surrey, GU9 7TJ
United Kingdom
Phone: +44 (0) 1252-730-141
Fax: +44 (0) 1252-727-689
e-mail:
eurosales@powerint.com
CHINA (SHENZHEN)
Rm A, B & C 4th Floor, Block C,
Electronics Science and
Technology Building, 2070
Shennan Zhong Rd,
Shenzhen, Guangdong,
China, 518031
Phone: +86-755-8379-3243
Fax: +86-755-8379-5828
e-mail:
chinasales@powerint.com
ITALY
Via De Amicis 2
20091 Bresso MI – Italy
Phone: +39-028-928-6000
Fax: +39-028-928-6009
e-mail: eurosales@powerint.com
SINGAPORE
51 Newton Road,
#15-08/10 Goldhill Plaza,
Singapore, 308900
Phone: +65-6358-2160
Fax: +65-6358-2015
e-mail:
singaporesales@powerint.com
APPLICATIONS HOTLINE
World Wide +1-408-414-9660
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
APPLICATIONS FAX
World Wide +1-408-414-9760
Page 26 of 26