Cirrus Logic CRD1680-7W User Manual

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CRD1680-7W

1.102 28mm1.024 26mm0.672 17mm

7 Watt Reference Design

CRD1680-7W

Features

• Constant-current Output

• Flicker-free Dimming

• Line Voltage 12VAC/VDC, ±10%

• Rated Input Power: 7.0 W

• Rated Output Power: 5.6W

• Output Voltage: <15 V

• High Efficiency with Magnetic and Electronic Transformers

• Low Component Count

• Supports Cirrus Logic Product CS1680

General Description

The CRD1680-7W reference design demonstrates the performance of the CS1680 dimmable LED driver for low-voltage lighting with a target output of 430mA driving 4LEDs in series and multi-lamp transformer compatibility for non-dimmer systems and dimmer systems paired with electronic and magnetic low-voltage transformers targeted to fit into MR16 LED lamp applications.

DIMENSIONS (OVERALL)

Length Width Height

For more information, see Figure 3 on page 6.

ORDERING INFORMATION

CRD1680-7W-Z 7 Watt Reference Design Supports CS1680

. It

provides exceptional single-lamp

. The form factor is

Cirrus Logic, Inc.

http://www.cirrus.com

Copyright  Cirrus Logic, Inc. 2014

AUG‘14

DS1017RD3

CRD1680-7W

IMPORTANT SAFETY INSTRUCTIONS

ead and follow all safety instructions prior to using this demonstration board.

his Engineering Evaluation Unit or Demonstration Board must only be used for assessing IC performance in a

aboratory setting. This product is not intended for any other use or incorporation into products for sale.

his product must only be used by qualified technicians or professionals who are trained in the safety procedures

ssociated with the use of demonstration boards.

Risk of Electric Shock

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 terminals of any components.

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 power source.

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

omply 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.

R

T l

T a

x

c

2 DS1017RD3

,

CRD1680-7W

1. INTRODUCTION

The CS1680 is a cascade boost-buck dimmable LED controller IC. The CS1680 uses a Cirrus Logic proprietary intelligent digital control that provides exceptional single-lamp and multi-lamp transformer compatibility for nondimmer systems and dimmer systems paired with electronic and magnetic low-voltage transformers. The CS1680 integrates a continuous conduction mode (CCM) boost converter that provides transformer compatibility and dimmer compatibility with a constant output current buck stage. An adaptive digital algorithm controls the boost stage and dimmer compatibility operation mode to enable flicker-free operation down to 5% output current with leading-edge and trailing-edge dimmers. For in-depth implementation of the CS1680, please consult documents in Further Reading on page 3 for IC and reference design details.

The CRD1680-7W 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. Protection algorithms such as output open/ short, overcurrent detection, boost overvoltage, and overtemperature thermistors protect the system during abnormal conditions. Details of these features are provided in the CS1680 Dimmable LED Driver IC for Low-voltage Lighting data sheet.

The CRD1680-7W board demonstrates the performance of the CS1680. This reference board has been designed for an output load of 4

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 CS1680 dimmable LED controller IC.

LEDs in series at a target output current of 430mA (12.0V typical).

Extreme caution needs to be exercised while handling this board. This board is to be used by trained professionals only.

2. SCHEMATIC

CRD1680-7W

Figure 1. Schematic

3. BILL OF MATERIALS

Line Ite m Descri ption Qty UM Reference Designator Manufacturer Manufacturer Part Number

0002 CAP 10uF ±10% 25V X7R NPb 1206 2

C1 C10

0003 CAP 27pF ±5% 50V C0G NPb 0603 1 EA

C2

KEMET

C0603C270J5GAC

0004 CAP 0.10uF 10% 25V X7RLESR NPb 0603 4

C3 C4 C5 C14

0005 CAP 180uF ±20% 35V AL ELEC NPb RA D 1 EA

C6

PANASONIC

EEUFR1V 181B

0006 CAP 4.7uF ±10% 35V X7R NPb 0805 1

C7

0008 CAP 100pF ±5% 50V C0G NPb 0603 1 EA

C9

KEMET

C0603C101J5GAC

0009 CAP 1uF ±10% 50V X7R NPb RAD 1

C12

0010 CAP 1000pF ±10% 50V X7R NPb 0603 1 EA

C13

KEMET KOA PANASONIC

C0603C102K5RAC X7R0603HTTD102K ECJ1VB1H102K

0011 CAP 10uF ±10% 35V X7R MLC NPb 1206 1

C17

0012 CAP 0.68uF ±10% 50V X7R NPb RAD 1

C20

0013 CAP 1uF ±10% 25V X7R CER NPb 0603 1

C21

0014 DIODE SKY BARR 2A 40V NPb SOD128 2

D1 D2

0015 DIODE SKY BARR 5A 40V NPb SOD128 4

D3 D4 D5 D6

0016 DIODE ZENER 500mW 16V NPb SOD80C 1

D7

0017 DIODE ZENER 500mW 6.2V NPb S OD80C 1

D9

0018 DIODE SHKY 750mA 45V NPb SC79-2 2

D11 D13

0019 FE BEAD 3.0A 120ohm@100MHz NPb 0805 2

FB1 FB2

0021 IND PWR 15uH 2.4A ±20% SHLD NPb SM 1

L1

0022 IND PWR 47uH 1.3A ±20% SHLD NPb SM 1

L2

0023 THERM 100K OHM ±5% 0.10mA NPb 0603 1

NTC1

0024 TRAN MOSF ET N-CH 40V 3.6A NPb SOT23 3

Q1 Q2 Q3

0025 TRAN NPN SW 40V 600mA NP b SOT-23 2

Q4 Q5

0026 RES 0.16 OHM 1/ 4W ±1% NP b 0805 1

R1

0027 RES 0.51 OHM 1/ 4W ±1% NP b 0805 1

R2

0028 RES 5.11k OHM 1/10W ±1% NPb 0603 1 EA

R3

DALE KOA PANASONIC

CRCW06035K 11FKEA RK73H1JTTD5111F ERJ3EKF5111V

0029 RES 20k OHM 1/ 10W ±5% NP b 0603 FILM 1 EA

R4

DALE KOA

CRCW060320K 0JNEA RK73B1JTTD203J

0030 RES 6.65k OHM 1/10W ±1% NPb 0603 1

R5

0031 RES 35.7K OHM 1/10W ±1% NPb 0603 3

R6 R13 R15

0032 RES 93.1 OHM 1W ±1% FILM NPb 2512 2

R7 R18

0033 RES 604K OHM 1/ 10W ±1% NPb 0603 2

R8 R10

0034 RES 0 OHM 1/10W ±5% NPb 0603 FILM 2 EA

R9 R16

NIC COMPO NENTS PANASONIC VENKEL

NRC0606ZOTRF ERJ3EKF0R00V CR0603-10W-000T

0035 RES 1 OHM 1/4W ±1% NPb 0805 1

R11

0036 RES 51.1 OHM 1/ 10W±1% NP b 0603 FILM 1 EA

R12

KOA PANASONIC

RK73H1JTTD51R1F ERJ3EKF51R1V

0037 RES 22.0 OHM 1/ 10W ±1% NP b 0603 2

R14 R102

0038 RES 10 OHM 1/10W ±1% NPb 0603 FILM 2 EA

R17 R20

VENKEL PANASONIC

C0603-10W-10R0FT ERJ3EKF10R0V

0039 RES 2k OHM 1/ 10W ±5% NP b 0603 FILM 1 EA

R26

KOA PANASONIC

RK73B1JTTD202J ERJ3GEYJ202V

0040 RES 49.9k OHM 1/10W ±1% NPb 0603 1 EA

R31

KOA PANASONIC

RK73H1JTTD4992F ERJ3EKF4992V

0041 RES 47.5k OHM 1/10W ±1% NPb 0603 1 EA

R32

KOA PANASONIC

RK73H1JTTD4752F ERJ3EKF4752V

0043 IC CRUS TRIAC DIM LV 12V NPb TSOP 16 1

U1

0044 IC INV SNGL SCHMIT-TRIG NPb SOT23-5 1

U2

0045 WIRE 28AW G PTFE INSULATED STRND RED 3 IN W 1 A NY SOURCE 080-00043-Z1

0046 WIRE 28AW G PTFE INSUL STRND BLACK 3 IN W 2

Figure 2. Bill of Materials

Date Gene rated: 08/14/2014

CRD1680-7W

BOM: CRD1680-7W-Z Rev: F1

EA

EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA EA

EA EA EA EA

EA

EA EA

TAIYO YUDEN TMK316B7106KL-TD

NIC COMPONENTS MURATA GRM188R71E104KA01D

PANASONIC TDK C2012X7R1V475K125AC

Walsin TDK FK16X7R1H105K

NIC COMPONENTS TAIYO YUDEN GMK316AB 7106KL-TR TDK FK16X7R1H684K TDK CGA3E1X7R1E105K080A C NXP PMEG4020EP,115 NXP PMEG4050EP,115 NXP BZV55-C16,115 NXP BZV55-C6V2,115 INFINEON BAS 52-02V H6327 WURTH ELECTRONICS 742792023 TAIYO YUDEN NRS8040T150MJGJ TAIYO YUDEN NR6045T470M MURATA NCP18WF104J03RB INTERNATIONAL RECTIFIER IRLML0040TRPBF NXP PMBT4401,215 PANASONIC ERJS6SFR16V PANASONIC ERJS6QFR51V

WALSIN

PANASONIC DALE CRCW06036K65FKEA YAGE O RC0603FR-0735K7L ROHM MCR100JZHF93R1 YAGE O RC0603FR-07604KL DALE

WALSIN STACK POLE RNCP0805FTD1R00 DALE

VENKEL PANASONIC ERJ3EKF22R0V DALE

WALSIN DALE

WALSIN CIRRUS LOGIC CS1680-FZZ/B1 TEXAS INSTRUMENTS SN74LV C1G14MDBVREP

ANY S OURCE 080-00044-Z1

NMC0603NPO270J50TRPF

EEUFR1V 181

0603N101J500LT

NMC0603X7R102K50TRPF

WR06X5111FTL

ERJ3GEYJ203V

CRCW06030000Z0EA

WR06X000PTL

CRCW060351R1FK EA

CR0603-10W-51R1FT

CRCW060310R0FK EA

ER06X10R0FTL CRCW06032K 00JNEA

WR06X202JTL CRCW060349K 9FKEA

WR06X4992FTL CRCW060347K 5FKEA

WR06X4752FTL

DS1017RD3 5

6 DS1017RD3

4. BOARD LAYOUT

Figure 3. PCB Dimensions

CRD1680-7W

DS1017RD3 7

Figure 4. Top Silkscreen

CRD1680-7W

8 DS1017RD3

Figure 5. Bottom Silkscreen

CRD1680-7W

DS1017RD3 9

Figure 6. Top Routing, Layer 1

CRD1680-7W

10 DS1017RD3

Figure 7. Power Plane, Layer 2

CRD1680-7W

DS1017RD3 11

Figure 8. Ground Plane, Layer 3

CRD1680-7W

12 DS1017RD3

Figure 9. Bottom Routing, Layer 4

CRD1680-7W

5. THERMAL IMAGING

Figure 10. Top Thermal

Figure 11. Bottom Thermal

CRD1680-7W

DS1017RD3 13

CRD1680-7W

6. DIMMER COMPATIBILITY

The boost stage is a low-side asynchronous boost converter. Once the CS1680 reaches its UVLO start threshold and begins normal operation, the CS1680 controller executes a dimmer switch detection algorithm to set the operating state of the IC. Table 1 summarizes the system operating state that produced the empirical dimmer compatibility results.

MR16 Lamp with a CS1680 (12VAC)

Date 09/09/2013 Power Factor

Vendor Cirrus Logic IEC-61000-3-2 Compliant (Y/N)

Input Voltage (RMS) 12 EN55015 Compliant (Y/N) Y

Form Factor MR16 Nominal Input Power (W)

Model # CRD1680-7W Maximum Input Power (W)

IC CS1680 Output Voltage (V)

Topology Boost/Buck Output Current (mA)

Isolation (Y/N) N

Efficiency

7

(%) 76.6 % Output Power (W)

Output Current Ripple

1,6

1,4

 120Hz (mA)

1,6

2,6

3,6

1,5

0.98

Y

6.79

7.0

12.27

424

0

5.21

Notes: 1. Tested at nominal input voltage, nominal input frequency and without a dimmer

2. Tested over input voltage tolerances for steady-state operation

3. Compliant with IEC 61000-3-2 Class C < 25 W

4. Average

5. Peak-to-peak

6. Measured with Chroma 66202 Power Analyzer

7. MR16 lamp efficiency is dependent on LED output voltage V

OUT

14 DS1017RD3

DS1017RD3 15

6.1 120VAC Dimmer Compatibility

Table 1 reports the empirical dimmer compatibility results when detectable inputs to the dimmer compatibility circuit are generated using a 120VAC transformer paired with a leading-edge or trailing-edge dimmer.

Table 1: 120VAC, 60Hz Mains Power System

Dimmer

1

Transformer

Lutron DVLV-600P

Leading Edge

Flicker Free2 Steady-State

# of lamps # of lamps # of lamps # of lamps # of lamps # of lamps # of lamps # of lamps

3

I

out

(%)

Min

Max Max Max Max

Lutron DVELV-300P

Trailing Edge

Flicker Free2 Steady-State

I

out

(%)

Min

Flicker Free2

Steady-State

Lutron SELV-300P

Trailing Edge

I

(%)

out

Min

Flicker Free2 Steady-State

Levitron 6615

Trailing Edge

I

(%)

out

Min

136 1 3 6 136 1 3 6 136 1 3 6 136 1 3 6

Hatch

LS1250EN

Lightech

LET60

Hatch

RS12-80M

Hatch

VS12-60WD

Osram

ET-MZ 60

YYY

YYN

Eurofase Y N N

5.2 5.2 5.2

---

808070 --- --- ---

5.2 5.2 5.2 YYY

100 100 100 100 100 90 100 100 80 100 100 100

5.2 5.2 5.2 YYY

100 100 100 100 100 100 100 100 80 100 100 100

5.2 5.2 5.2 YYY

100 100 100 100 100 80 100 90 80 100 100 90

5.2 5.2 5.2 YYY

100 100 100 100 100 70 100 90 70 100 100 80

5.2 5.2 5.2 YYN

---

5.2 5.2 5.2

---

YYY

---

5.2 5.2 5.2

---

20 10 5.2

YYY

30 10 10

YYY

10 5.2 5.2

YYY

10 5.2 5.2

YYY

10 10 10

YYN

100 90 70 100 100 80 100 100 70 100 100 90

Notes: 1. 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.

2. Flicker-free results are reported at different conduction angle ranges and dependent on transformer and dimmer pairing.

3. Empirical results are recorded only with a magnetic transformer paired with a lead-edge dimmer.

CRD1680-7W

16 DS1017RD3

6.2 230VAC Dimmer Compatibility

Table 2 reports the empirical dimmer compatibility results when detectable inputs to the dimmer compatibility circuit are generated using a 230VAC transformer paired with a leading-edge or trailing-edge dimmer.

Table 2: 230VAC, 50Hz Mains Power System

Dimmer

1

Transformer

HPM CAT400L

Leading Edge

Flicker Free2 Steady-State

# of lamps # of lamps # of lamps # of lamps # of lamps # of lamps # of lamps # of lamps

3

I

out

(%)

Min

Flicker Free2 Steady-State

Max Max Max Max

Busch 2247U

Leading Edge

I

(%)

out

Min

Flicker Free2 Steady-State

HPM CAT400T

Trailing Edge

I

(%)

out

Min

Flicker Free2 Steady-State

Clipsal 32E450TM

Trailing Edge

I

(%)

out

Min

136 1 3 6 136 1 3 6 136 1 3 6 136 1 3 6

Niko

320-00001

Osram

Parrot 105

Philips

S60

Primaline

105

Tridonic Possum

Notes: 1. This document includes trademarks, trade names, brands, logos, product names and/or product identifiers of companies other than Cirrus Logic, Inc. All such trademarks,

2. Flicker-free results are reported at different conduction angle ranges and dependent on transformer and dimmer pairing.

3. Empirical results are recorded only with a magnetic transformer paired with a lead-edge dimmer.

YYY

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.

5.2 5.2 5.2 YYY

100 90 100 100 100 100 -

5.2 5.2 5.2 YYY

100 100 40 100 100 80 80 80 60 100 100 80

5.2 5.2 5.2 YNY

100 90 80 100 100 100 100 90 80 100 100 100

5.2 5.2 5.2 YYN

100 100 90 100 100 40 100 80 90 100 100 100

5.2 5.2 5.2 NYY

100 100 80 100 100 100 80 70 60 100 100 60

5.2 5.2 5.2

---

YYN

YYY

YYN

5.2 5.2 5.2

-

--

---

YYY

5.2 5.2 5.2

-

--

CRD1680-7W

7. INDUCTOR CONSTRUCTION

The CS1680 integrates a continuous conduction mode (CCM) boost converter that provides transformer compatibility and dimmer compatibility with a constant output current buck stage. The following sections describe the boost and buck inductors installed on the CRD1680-7W.

7.1 Boost Inductor

The CS1680 uses an adaptive digital algorithm to control the boost stage and dimmer compatibility operation mode, which enables flicker-free operation down to 5% output current with leading-edge and trailing-edge dimmers. Boost inductor L1 is selected to be a standard TAIYO YUDEN power inductor.

7.1.1 Electrical Specifications

Characteristics conditions:

• Operating temperature range: -25 °C to +125 °C (including coil heat)

Parameter Condition Symbol Value Unit

TAIYO YUDEN Boost Inductor # NRS8040T150MJGJ

Inductance (Note 1)

DC Resistance (Note 1)

Saturation Current

f

=100kHz

measured

Maximum

Rated Current

15 (±20%) H

0.065 

2900 mA

Notes: 1. Measured across pins 1 and 2

7.2 Buck Inductor

The CS1680 buck stage is a constant current-regulated DC-DC converter capable of delivering the highest possible efficiency with constant current output while minimizing line frequency ripple. Buck inductor L2 is selected to be a standard TAIYO YUDEN power inductor.

7.2.1 Electrical Specifications

Characteristics conditions:

• Operating temperature range: -25 °C to +125 °C (including coil heat)

Parameter Condition Symbol Value Unit

TAIYO YUDEN Buck Inductor #NR6045T470M

Inductance (Note 1)

DC Resistance (Note 1)

Saturation Current

Notes: 1. Measured across pins 1 and 2

f

=100kHz

measured

t

=20°C

DCR

Rated Current

47 (±20%) H

0.286 

1300 mA

DS1017RD3 17

8. PERFORMANCE PLOTS (120VAC)

0

0.1

0.2

0.3

0.4

0.5

20 40 60 80 100 120 140 160 180

Output Current (A)

Dim Angle (o)

Mode 1

Mode 1 - Hatch LS1250EN w/Leading-edge Waveform Mode 2 - Lightech LET60 w/

Traili

ng-edge Waveform

Mode 3 - Lightech LET60 w/Leading-edge Waveform

Mode 3

Mode 2

Mode 1

Mode 3

Mode 2

Figure 12. Typical CRD1680-7W Output Current vs. Dim Angle, 120VAC

0

2

4

6

8

10

12

20 40 60 80 100 120 140 160 180

Input Power (W)

Dim Angle (o)

Mode 1 - Hatch LS1250EN w/Leading-edge Waveform Mode 2 - Lightech LET60 w/Trailing-edge W aveform Mode 3 - Lightech LET60 w/Leading-edge Waveform

Mode 1

Mode 3

Mode 2

Figure 13. Typical CRD1680-7W Input Power vs. Dim Angle, 120VAC

CRD1680-7W

18 DS1017RD3

CRD1680-7W

0.0

0.2

0.4

0.6

0.8

1.0

108 112 116 120 124 128 132

Output Current (A)

Line Voltage (V)

Magnetic Transformer - Hatch LS1250EN Electronic Transformer - Lightech LET60

Magnetic Transformer

Electronic Transformer

Figure 14. CRD1680-7W Output Current vs. Line Voltage, 108VAC to 132VAC

60

65

70

75

80

85

90

108 112 116 120 124 128 132

Efficiency (%)

Line Voltage (V)

Magnetic Transformer - Hatch LS1250EN Electronic Transformer - Lightech LET60

Magnetic Transformer

Electronic Transformer

Figure 15. Typical CRD1680-7W Efficiency vs. Line Voltage, 108VAC to 132VAC

DS1017RD3 19

CRD1680-7W

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

108 112 116 120 124 128 132

Power Factor

Line Voltage (V)

Magnetic Transformer - Hatch LS1250EN Electronic Transformer - Lightech LET60

Magnetic Transformer

Electronic Transformer

Figure 16. CRD1680-7W Power Factor vs. Line Voltage, 108VAC to 132 VAC

20 DS1017RD3

CRD1680-7W

Figure 17. No-dimmer CRD1680-7W Output Mode1, Steady-state

Figure 18. Maximum CRD1680-7W Output Mode1, Steady-state

DS1017RD3 21

CRD1680-7W

Figure 19. Maximum CRD1680-7W Output Mode2, Steady-state

Figure 20. Maximum CRD1680-7W Output Mode3, Steady-state

22 DS1017RD3

CRD1680-7W

Figure 21. CRD1680-7W Output Current at Minimum Dim Angle, Mode1, Turn-on Waveforms

Figure 22. CRD1680-7W Output Current at Maximum Dim Angle, Mode1, Turn-on Waveforms

DS1017RD3 23

CRD1680-7W

Figure 23. CRD1680-7W Output Current at Minimum Dim Angle, Mode2, Turn-on Waveforms

Figure 24. CRD1680-7W Output Current at Maximum Dim Angle, Mode2, Turn-on Waveforms

24 DS1017RD3

CRD1680-7W

Figure 25. CRD1680-7W Output Current at Minimum Dim Angle, Mode3, Turn-on Waveforms

Figure 26. CRD1680-7W Output Current at Maximum Dim Angle, Mode3, Turn-on Waveforms

DS1017RD3 25

9. PERFORMANCE PLOTS (230VAC)

0

0.1

0.2

0.3

0.4

0.5

20 40 60 80 100 120 140 160 180

Output Current (A)

Dim Angle (o)

Mode 1

Mode 1 - Niko 320-0001 w/Leading-edge Waveform Mode 2 - Parrot 105 w/

Trailing-edge Waveform

Mode 3 - Parrot 105 w/Leading-edge Waveform

Mode 3

Mode 2

Figure 27. Typical CRD1680-7W Output Current vs. Dim Angle, 230VAC

0

2

4

6

8

10

12

20 40 60 80 100 120 140 160 180

Input Power (W)

Dim Angle (o)

Mode 1

Mode 1 - Niko 320-0001 w/Leading-edge Waveform Mode 2 - Parrot 105 w/

Traili

ng-edge Waveform

Mode 3 - Parrot 105 w/Leading-edge Waveform

Mode 3

Mode 2

Figure 28. Typical CRD1680-7W Input Power vs. Dim Angle, 230VAC

CRD1680-7W

26 DS1017RD3

CRD1680-7W

0.0

0.2

0.4

0.6

0.8

1.0

208 212 216 220 224 228 232 236 240 244 248 252

Output Current (A)

Line Voltage (V)

Magnetic Transformer - Niko 320-0001 Electronic Transformer - Parrot 105

Magnetic Transformer

Electronic Transformer

Figure 29. CRD1680-7W Output Current vs. Line Voltage, 208VAC to 252VAC

60

65

70

75

80

85

90

208212216220224228232236240244248252

Efficiency (%)

Line Voltage (V)

Magnetic Transformer - Niko 320-0001 Electronic Transformer - Parrot 105

Magnetic Transformer

Electronic Transformer

Figure 30. Typical CRD1680-7W Efficiency vs. Line Voltage, 208VAC to 252VAC

DS1017RD3 27

CRD1680-7W

0.6

0.65

0.7

0.75

0.8

0.85

0.9

0.95

1

208 212 216 220 224 228 232 236 240 244 248 252

Power Factor

Line Voltage (V)

Magnetic Transformer - Niko 320-0001 Electronic Transformer - Parrot 105

Magnetic Transformer

Electronic Transformer

Figure 31. CRD1680-7W Power Factor vs. Line Voltage, 208VAC to 252 VAC

28 DS1017RD3

10.CONDUCTED EMI

Figure 32. CRD1680-7W Conducted EMI

Device Under Test: CRD1680-7W-Z Operating Conditions: 230V 50Hz

Test Specification: IEC 61000-3-2 Operator Name: DLP

Scan Settings (1 Range)

Frequencies Receiver Settings

Start Stop Step Res BW M-Time Atten Preamp

150kHz 30MHz 4.5kHz 9 kHz (6dB) 50 ms Auto Off

Final Measurement

Detectors: PK+, AV Peaks: 8 Meas Time: 1s Acc. Margin: 12dB

CRD1680-7W

DS1017RD3 29

11.RADIATED EMI

Figure 33. CRD1680-7W Radiated EMI - Horizontal Polarity

Figure 34. CRD1680-7W Radiated EMI - Vertical Polarity

Device Under Test: CRD1680-7W-Z Operator Name: DLP

Test Specification: CISPR 16-1-4:2007 EN55022 Compliant (Y/N): Y

Antenna Orientation: Horizontal/Vertical Frequency Range: 30MHz to 1GHz

EUT Line Voltage: 230 VAC EUT Power Frequency: 50Hz

Final Measurement

CRD1680-7W

30 DS1017RD3

12.REVISION HISTORY

Revision Date Changes

RD1 SEP 2013 Initial release

RD2 NOV 2013 Content addition and clarification for revision B silicon

RD3 JAN 2014 Content clarification for PCBA revision D

RD4 SEP 2014 Content addition

CRD1680-7W

DS1017RD3 31

Cirrus Logic CRD1680-7W User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Features

1. INTRODUCTION

Further Reading

2. SCHEMATIC

3. BILL OF MATERIALS

4. BOARD LAYOUT

5. THERMAL IMAGING

6. DIMMER COMPATIBILITY

6.1 120VAC Dimmer Compatibility

6.2 230VAC Dimmer Compatibility

7. INDUCTOR CONSTRUCTION

7.1 Boost Inductor

7.1.1 Electrical Specifications

7.2 Buck Inductor

7.2.1 Electrical Specifications

8. PERFORMANCE PLOTS (120VAC)

9. PERFORMANCE PLOTS (230VAC)

10.CONDUCTED EMI

11.RADIATED EMI

12.REVISION HISTORY