Cirrus CRD1610A-8W Quasi-resonant flyback with constant-current output Datasheet

CRD1610A-8W
CRD1610A-8W
8 Watt Reference Design
Features
General Description
• Quasi-resonant Flyback with Constant-current Output
The CRD1610A-8W reference design demonstrates the
performance of the CS1610A resonant mode AC/DC
dimmable LED driver IC with a 460mA output driving
5  LEDs in series. It offers best-in-class dimmer
compatibility with leading-edge, trailing-edge, center-cut,
and digital dimmers. The form factor is targeted to fit into
many LED bulb applications (A19, PAR).
• Flicker-free Dimming
• Line Voltage 120VAC, ±10%
• Rated Input Power: 8.1W
• Rated Output Power: 6.7W
DIMENSIONS (OVERALL)
• Output Voltage: 14.0V to 15.8V
Length
Width
Height
• Efficiency: 84% at 460mA for 5  LEDs in Series
2.285  58mm   1.181  29.9mm   0.59  15mm 
• Low Component Count
For more information, see Figure 3 on page 6.
• Supports Cirrus Logic Product CS1610A
ORDERING INFORMATION
CRD1610A-8W-Z 8 Watt Reference Design
Supports CS1610A
Top
Bottom
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2013
(All Rights Reserved)
SEP‘13
DS1012RD3
CRD1610A-8W
IMPORTANT SAFETY INSTRUCTIONS
Read and follow all safety instructions prior to using this demonstration board.
This Engineering Evaluation Unit or Demonstration Board must only be used for assessing IC performance in a
laboratory setting. This product is not intended for any other use or incorporation into products for sale.
This product must only be used by qualified technicians or professionals who are trained in the safety procedures
associated with the use of demonstration boards.
Risk of Electric Shock
•
The direct connection to the AC power line and the open and unprotected boards present a serious risk of electric
shock and can cause serious injury or death. Extreme caution needs to be exercised while handling this board.
•
Avoid contact with the exposed conductor or terminals of components on the board. High voltage is present on
exposed conductor and it may be present on terminals of any components directly or indirectly connected to the AC
line.
•
Dangerous voltages and/or currents may be internally generated and accessible at various points across the board.
•
Charged capacitors store high voltage, even after the circuit has been disconnected from the AC line.
•
Make sure that the power source is off before wiring any connection. Make sure that all connectors are well
connected before the power source is on.
•
Follow all laboratory safety procedures established by your employer and relevant safety regulations and guidelines,
such as the ones listed under, OSHA General Industry Regulations - Subpart S and NFPA 70E.
Suitable eye protection must be worn when working with or around demonstration boards. Always
comply with your employer’s policies regarding the use of personal protective equipment.
All components and metallic parts may be extremely hot to touch when electrically active.
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you
go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives
consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR
USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK
AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER
OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE,
TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, the Cirrus Logic logo designs, EXL Core, and the EXL Core logo design are trademarks of Cirrus Logic, Inc. All other brand and product names
in this document may be trademarks or service marks of their respective owners.
2
DS1012RD3
CRD1610A-8W
1. INTRODUCTION
The CS1610A is a 120VAC quasi-resonant flyback mode dimmable LED controller IC. The CS1610A uses a digital
control algorithm that is optimized for high efficiency and > 0.90 power factor over a wide input voltage range
(108VAC to 132VAC). The CS1610A integrates a critical conduction mode (CRM) boost converter that provides
power factor correction and dimmer compatibility with a constant output current, quasi-resonant flyback stage. An
adaptive dimmer compatibility algorithm controls the boost stage and dimmer compatibility operation mode to enable
flicker-free operation to <2% output current with leading-edge, trailing-edge, and digital dimmers.
The CRD1610A-8W board is optimized to deliver low system cost in a high-efficiency, flicker-free, phase-dimmable,
solid-state lighting (SSL) solution for incandescent lamp replacement applications. The feedback loop is closed
through an integrated digital control system within the IC. The variation in switching frequency also provides a
spread-frequency spectrum, thus minimizing the conducted EMI filtering requirements. Protection algorithms such
as output open/short, current-sense resistor open/short, and overtemperature thermistors protect the system during
abnormal conditions. Details of these features are provided in the CS1610A/11A/12A/13A TRIAC Dimmable LED
Driver IC data sheet.
The CRD1610A-8W board demonstrates the performance of the CS1610A. This reference board has been designed for an output load of 5  LEDs in series at 460mA (14.6V typical).
This document provides the schematic for the board. It includes oscilloscope screen shots that indicate various operating waveforms. Graphs are also provided that document the performance of the board in terms of Efficiency vs.
Line Voltage, Output Current vs. Line Voltage, and Output Current vs. Dim Angle for the CS1610A dimmable LED
controller IC.
Extreme caution needs to be exercised while handling this board. This board is to be used by trained professionals
only.
DS1012RD3
3
4
2. SCHEMATIC
ECO
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NOTES: UNLESS OTHERWISE SPECIFIED:
1. ALL RESISTOR VALUES ARE IN OHMS.
PCB DWG-
SHEET
TITLE
240-00633-Z1
ASSY DWGSCHEMATIC DWG
603-00633-Z1
PART #
600-00633-Z1
DRAWN BY
LBL SUBASSY PROD ID AND REV
DS1012RD3
Figure 1. Schematic
422-00013-01
DATE
SCHEM.,CRD1610A-8W
=5(9%
-&0
4/30/2013
ENGINEER
SHEET
-&0
1
OF
1
SHEET
SIZE
B
CRD1610A-8W
AUXILIARY HARDWARE AND RELATED DOCUMENTS:
CRD1610A-8W
3. BILL OF MATERIALS
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Rev
DescripƟon
DIODE RECT 200V 0.8A NPB MINIDIP
CAP 0.01uF ±10% 250V POLY NPb RAD
CAP 0.047uF ±5% 250V POLY NPb RAD
CAP 0.1uF ±10% 250V POLY NPb RAD
CAP 22uF ±20% 250V ELEC NPb RAD
CAP 100uF ±20% 25V EL LO ESR NPb RD
CAP 22UF ±20% 35V ELEC RAD
CAP 100pF ±5% 50V C0G NPb 0603
CAP 0.22uF ±10% 25V X7R NPb 0603
CAP 0.68uF ±10% 50V X7R NPb 0805
CAP 4.7uF ±10% 25V X7R NPb 0805
CAP 47pF ±5% 1000V C0G NPb 1206
CAP 0.033uF ±10% 250V POLY NPb RAD
CAP 0.068uF ±10% 250V X7R NPb 1206
CAP 2200PF +80/-20% 2KV CER NPb RAD
DIODE FAST 400V 1A NPb DO-41
DIODE FAST 400V 1A NPb SMA
DIODE SKY RECT 60V 2A NPb DO-214AC
DIODE FAST SW 75V 350mW NPb SOD123
DIODE SWT 250V 0.4A NPb SOT-23
DIODE RECT 30V 1A NPb SOD-323
DIODE RECT 400V 1A NPb SMA
NO POP PAD H40 P64 NPb TH
FUSE 2A 125V VFA NPb AXL
IND 3.3mH ±10% 11.8OHM DCR NPb TH
XFMR 1.45mH 10% NPb TH
THERM 100K OHM ±5% 0.10mA NPb 0603
TRAN MOSFET nCH 60V.2A NPb SOT23-3
TRAN MOSFT nCH 1.8A 400V NPb SOT223
TRAN MOSFET nCH 0.38A 500V NPb TO-92
TRAN MOSFET nCH 1.0A 600V NPb DPAK
RES 1.5k OHM 1/4W ±1% NPb 1206
RES 2.32k OHM 1/4W ±1% 1206 FILM
RES 4.70K OHM 1/10W ±1% NPb 0603
RES PWR 2.0K OHM 2W ±5% NPb AXL
RES 27K OHM 1/8W ±1% NPb 0805
RES 270 OHM 2W ±5% MTL FLM NPb AXL
RES 750k OHM 1/4W ±1% 1206 FILM
RES 47 OHM 1/10W ±1% NPb 0603
RES 22.0 OHM 1/10W ±1% NPb 0603
RES 22.1k OHM 1/10W ±1% NPb 0603
RES 51.0 OHM 1/10W ±1% NPb 0603
RES 59k OHM 1/10W ±1% NPb 0603 FILM
RES 24k OHM 1/10W ±1% NPb 0603 FILM
RES 14k OHM 1/10W ±1% NPB 0603 FILM
RES 1k OHM 1/10W ±1% NPb 0603 FILM
RES 5.49 OHM 1/4W ±1% NPb 1206 FLM
RES 69.8k OHM 1/10W ±1% NPb 0603
XFMR 3.1mH 10% NPb TH
B2 IC CRUS DIM 120V LED DRV NPb SOIC16
DIODE ZENER 16V 1W NPb DO-214AC
DIODE TVS 250V 600W BID NPb AXL
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
2
1
1
1
1
1
1
1
1
2
2
1
2
4
3
1
1
1
1
1
1
1
1
1
1
1
1
1
Reference Designator
BR1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
CY
D1
D2
D3
D4
D5
D6 D8
D7
E1 E2 E3 E4
F1
L1 L2
L3
NTC
Q1
Q2
Q3
Q4
R1
R2
R3 R23
R4 R26
R5
R6 R16
R7 R8 R14 R15
R9 R19 R24
R10
R11
R12
R13
R17
R18
R20
R21
R22
T1
U1
Z1
Z2
MFG
DIODES INC
EPCOS
EPCOS
EPCOS
NICHICON
PANASONIC
PANASONIC
KEMET
TDK
KEMET
TDK
JOHANSON DIELECTRICS
EPCOS
KEMET
MURATA
ST MICROELECTRONICS
ST MICROELECTRONICS
MICRO COMMERCIAL(MCC)
DIODES INC
DIODES INC
DIODES INC
DIODES INC
NO POP
LITTELFUSE
COILCRAFT
KUNSHAN EAGERNESS
MURATA
DIODES INC
ST MICROELECTRONICS
FAIRCHILD
ST MICROELECTRONICS
DALE
DALE
PANASONIC
VISHAY
PANASONIC
PANASONIC
DALE
PANASONIC
PANASONIC
DALE
PANASONIC
DALE
DALE
DALE
DALE
DALE
DALE
KUNSHAN EAGERNESS
CIRRUS LOGIC
MICRO COMMERCIAL
ST MICROELECTRONICS
MFG P/N
HD02-T
B32529C3103K
B32529C3473J
B32529C3104K
UVY2E220MPD
EEUFM1E101
EEA-GA1V220H
C0603C101J5GAC
C1608X7R1E224K
C0805C684K5RAC
C2012X7R1E475K
NP-102R18N470JV4E
B32529C3333K
C1206C683KARAC
DEBE33D222ZA2B
STTH1R04
STTH1R04A
SS26-TP
1N4148W-7-F
BAV23S-7-F
SBR130S3-7
S1G-13-F
NP-PAD-H40P64
0251002.MXL
RFB0807-332L
RM05-CL02A
NCP18WF104J03RB
ZVN4106FTA
STN3N40K3
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CRCW12061K50FKEA
CRCW12062K32FKEA
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ERJ6ENF2702V
ERG2SJ271
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ERJ3EKF47R0V
ERJ3EKF22R0V
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CRCW060359K0FKEA
CRCW060324K0FKEA
CRCW060314K0FKEA
CRCW06031K00FKEA
CRCW12065R49FKEA
CRCW060369K8FKEA
RM06-CL03A
CS1610A-FSZ/B2
SMAZ16-TP
P6KE250CA
Figure 2. Bill of Materials
DS1012RD3
5
6
4. BOARD LAYOUT
CRD1610A-8W
DS1012RD3
Figure 3. PCB Dimensions
DS1012RD3
7
CRD1610A-8W
Figure 4. Top Silkscreen
8
CRD1610A-8W
DS1012RD3
Figure 5. Bottom Silkscreen
DS1012RD3
9
CRD1610A-8W
Figure 6. Top Routing
10
CRD1610A-8W
DS1012RD3
Figure 7. Bottom Routing
CRD1610A-8W
5. THERMAL IMAGING
Figure 8. Top Thermal
Figure 9. Bottom Thermal
DS1012RD3
11
CRD1610A-8W
6. DIMMER COMPATIBILITY
PAR 16 Lamp with a CS1610A (120V/60Hz)
Date
11/15/2012
Power Factor1,4
Vendor
Cirrus Logic
EN55015 Compliant (Y/N)
0.96
Y
1,4
Input Voltage
120V/60Hz
Nominal Input Power (W)
6.94
Form Factor
PAR 16
Maximum Input Power (W)1,4
8.5
Model #
CRD1610A-8W
Output Voltage
(V)1,2
12
1,2
IC
CS1610A
Output Current (mA)
475
Topology
Boost/Flyback
Output Current Ripple  120Hz (mA)1,3
0
1,4
Isolation (Y/N)
Y
Efficiency (%)
82.1%
Dimmer 5
Manufacture
5.7
Output Power (W)
Type
Flicker Free
Steady-State
Monotonic
Dimming
Max Iout (%)
Min Iout (%)
# of lamps
# of lamps
# of lamps
# of lamps
1
5
10
1
5
10
1
5
10
1
5
10
Cooper 38T
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Cooper 6001A
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Cooper 9530DS
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8 100.0
2.1
2.1
2.1
GE 52136
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6161
Leading Edge
Y
Y
Y
Y
Y
N
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6613
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6615
Trailing Edge
Y
Y
Y
Y
Y
Y
99.6
99.6
99.6
2.3
2.1
2.1
Leviton 6627
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
9.5
9.3
8.8
Leviton 6631
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6641
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6674
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 6683
Leading Edge
Y
Y
Y
Y
Y
Y
100.0 99.8
99.8
2.1
2.1
2.1
Leviton 6684
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton 700
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton ACE04
Trailing Edge
Y
Y
Y
Y
Y
Y
99.6
99.6
99.6
2.1
2.1
2.1
Leviton ACM06
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton ACX10
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
8.2
8.2
8.0
Leviton HCM06
Leading Edge
Y
Y
Y
Y
Y
N
99.8
99.8
99.8
2.1
2.1
2.1
Leviton IPI06-1L
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton IPL06
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Leviton PR180
Motion Detection
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
0.0
0.0
0.0
Leviton VZM06
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron AB-600
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
12
DS1012RD3
CRD1610A-8W
Dimmer 5
Manufacture
Type
Flicker Free
Steady-State
Monotonic
Dimming
Max Iout (%)
Min Iout (%)
# of lamps
# of lamps
# of lamps
# of lamps
1
5
10
1
5
10
1
5
10
1
5
10
Lutron AYCL-153P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
3.2
3.4
3.2
Lutron CTCL-153P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
4.2
4.2
3.8
Lutron DV-600P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron DVCL-153P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron DVELV-300P
Trailing Edge
Y
Y
Y
Y
Y
Y
98.9
97.5
96.0
2.1
2.1
2.1
Lutron GL-600H
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron LGCL-153PLH
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.5
2.5
2.3
Lutron MACL-153M
Leading Edge
Y
Y
Y
Y
Y
Y
95.6
95.6
94.9
2.1
2.1
2.1
Lutron MAW600
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron MIR-600
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron MRF2-6ND-120
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron MS-0PS6M-DV
Occupancy Sensor
Y
Y
Y
Y
Y
Y
99.8
99.8 100.0
0.0
0.0
0.0
Lutron NT2000
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron NTELV-600
Trailing Edge
Y
Y
Y
Y
Y
Y
92.2
90.5
89.9
2.1
2.1
2.1
Lutron NTLV-600
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron S-103P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron S-600P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron SELV-303P
Trailing Edge
Y
Y
Y
Y
Y
Y
86.7
85.3
84.0
2.1
2.1
2.1
Lutron SLV-600P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron SLV-603P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron SPS-600
Leading Edge
Y
Y
N
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron SPSLV-1000
Leading Edge
Y
Y
N
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron TG-600P
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Lutron TGCL-153PH
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
3.4
3.4
3.2
Lutron TTCL-100H
Leading Edge
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Pass & Seymour RW500U Occupancy Sensor
Y
Y
Y
Y
Y
Y
99.8
98.7
98.3
0.0
0.0
0.0
Smarthome 2486DIV6
Y
Y
Y
Y
Y
Y
99.8
99.8
99.8
2.1
2.1
2.1
Notes:
Leading Edge
1.
Tested at nominal input voltage, nominal input frequency and without a dimmer after soaking for 15 minutes
2.
Average
3.
Peak-to-peak
4.
Measured with Chroma 66202 Power Analyzer
5.
This document includes trademarks, trade names, brands, logos, product names and/or product identifiers of companies other
than Cirrus Logic, Inc. All such trademarks, trade names, brands, logos, product names, and product identifiers are for
identification purposes only and are the property of their respective owners, who are not affiliated with Cirrus Logic. Please visit
the respective sites of those owners to obtain a listing or understanding of their trademark rights. This document also includes
results from testing performed by Cirrus Logic for its own purposes and for which there are currently no industry standards. While
this testing was applied objectively, its results may include at least some degree of subjectivity. The testing or test results should
not be interpreted as any comment on the overall quality or suitability of any tested products.
DS1012RD3
13
CRD1610A-8W
7. INDUCTOR CONSTRUCTION
The CRD1610A-8W includes a critical conduction mode (CRM) boost converter that provides power factor correction and dimmer compatibility with a constant output current, quasi-resonant flyback stage. The following sections
describe the boost and flyback inductors installed on the CRD1610A-8W.
7.1
Boost Inductor
The CS1610A uses an adaptive dimmer compatibility algorithm to control the boost inductor stage, which guarantees dimmer compatibility operation plus enables flicker-free operation with leading-edge, trailing-edge, and digital
dimmers. The boost auxiliary winding is used for zero-current detection (ZCD) and supplies power to the CS1610A.
2
200T
#34AWG
(0.16mm)
Primary
1
5
22T
#34 AWG
(0.16mm )
Auxillary
4
Figure 10. Boost Inductor Schematic
7.1.1
Electrical Specifications
Characteristics conditions:
• Operating temperature range: -25 °C to +120 °C (including coil heat)
Parameter
Condition
Symbol
Min
Typ
Max
Unit
LP
1.305
1.45
1.595
mH
Boost Inductor
Primary Inductance
(Note 1)
fresonant =10kHz, 0.3V at 20°C
Primary DC Resistance
(Note 1)
tDCR =20°C
3.28
4.1
4.92

Auxiliary DC Resistance
(Note 2)
tDCR =20°C
0.456
0.57
0.684

Notes:
14
1.
2.
Measured across pins 1 and 2
Measured across pins 5 and 4
DS1012RD3
CRD1610A-8W
7.2
Flyback Transformer
The flyback transformer stage is a quasi-resonant current-regulated DC-DC Converter capable of delivering the
highest possible efficiency at a constant current while minimizing line frequency ripple. The auxiliary winding is used
for zero-current detection and overvoltage protection.
4
36T
# 35AWG
(0.14mm)
Primary 5
52T
#35 AWG
(0.14 mm)
B
13T
Secondary
#32AWG
(0.20mm) × 2
A
3
2
13 T
# 35AWG
(0.14mm)
Auxiliary
1
Figure 11. Flyback Transformer Schematic
7.2.1
Electrical Specifications
Characteristics conditions:
• Operating temperature range: -25 °C to +120 °C (including coil heat)
Parameter
Condition
Sym
Min
Typ
Max
Unit
-
4
-
kVRMS
Flyback Transformer
foperate=50/60Hz
Electrical Strength
(Note 3)
Primary Inductance
(Note 4) fresonant=10kHz, 0.3V at 20°C
LP
2.79
3.1
3.41
mH
Primary Leakage Inductance
(Note 4) fresonant=10kHz, 0.3V at 20°C
LK
-
-
15
H
Primary DC Resistance
(Note 4)
tDCR =20°C
2.175
2.90
3.625

Secondary DC Resistance
(Note 5)
tDCR =20°C
-
-
0.22

Auxiliary DC Resistance
(Note 6)
tDCR =20°C
0.3975
0.53
0.6625

Notes:
3.
4.
5.
6.
Time = 2s
Measured across pins 3 and 4
Measured across pins B and A
Measured across pins 2 and 1
DS1012RD3
15
CRD1610A-8W
8. PERFORMANCE PLOTS
0.5
Output Current (A)
0.4
0.3
0.2
0.1
0
20
40
60
80
100
120
140
160
180
160
180
Dim Angle (°)
Figure 12. Typical Output Current vs. Dim Angle
10
9
8
Input Power (W)
7
6
5
4
3
2
1
0
20
40
60
80
100
120
140
Dim Angle (°)
Figure 13. Typical Input Power vs. Dim Angle
16
DS1012RD3
CRD1610A-8W
1.00
Output Current (A)
0.80
0.60
0.40
0.20
0.00
100
110
120
130
140
Line Voltage (V)
Figure 14. Output Current vs. Line Voltage, 108VAC to 132VAC
90%
Efficiency (%)
85%
80%
75%
70%
65%
60%
100
110
120
130
140
Line Voltage (V)
Figure 15. Typical Efficiency vs. Line Voltage, 108VAC to 132VAC
DS1012RD3
17
CRD1610A-8W
1.00
0.95
Power Factor
0.90
0.85
0.80
0.75
0.70
0.65
0.60
100
110
120
130
140
Line Voltage (V)
Figure 16. Power Factor vs. Line Voltage, 108VAC to 132VAC
18
DS1012RD3
CRD1610A-8W
Figure 17. No-dimmer Mode, Startup, 120 VAC
Figure 18. No-dimmer Mode, Steady-state, 120VAC
DS1012RD3
19
CRD1610A-8W
Figure 19. Boost FET Q2 Waveform
Figure 20. Flyback FET Q4 Waveform
20
DS1012RD3
CRD1610A-8W
Figure 21. ILED at Maximum Dim Angle, Turn-on Waveforms
Figure 22. ILED at Medium Dim Angle, Turn-on Waveforms
DS1012RD3
21
CRD1610A-8W
Figure 23. ILED at Minimum Dim Angle, Turn-on Waveforms
22
DS1012RD3
CRD1610A-8W
9. CONDUCTED EMI
Device Under Test: CRD1610A-8W-Z
Operating Conditions: NOMNIAL
Test Specification: IEC 55015
Operator Name: JCM
Scan Settings (1 Range)
Frequencies
Receiver Settings
Start
Stop
Step
Res BW
M-Time
Atten
Preamp
150kHz
30MHz
4.5kHz
9kHz (6dB)
50ms
Auto
Off
Final Measurement
Detectors: QP, AV
Peaks: 10
Meas Time: 1s
Acc. Margin: 3dB
Figure 24. Conducted EMI
Final Measurement Results
Trace
Frequency
(MHz)
Level
(dBV)
Limit
(dBV)
Delta Limit
(dB)
Delta Ref
(dB)
Comment
1QP
0.15
61.18
66.00
-4.82
Auto
L1/on
* = Limit Exceeded
DS1012RD3
23
CRD1610A-8W
10. REVISION HISTORY
24
Revision
Date
Changes
RD1
FEB 2013
Initial release
RD2
MAR 2013
Context clarification
RD3
SEP 2013
PCBA revision B content clarification
DS1012RD3