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Cirrus Logic, Inc.

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CRD1630-10W

10 Watt Reference Design

Features

• Quasi-resonant Flyback with Constant-current Output

• Independent Regulation for Series 2 Channel Output

• Flicker-free Dimming

• Line Voltage 120VAC, ±10%

• Rated Input Power: 10W

• Rated Output Power: 8W

• Efficiency: 79.9% at 495mA for 4 White LEDs and

206mA for 5 Red LEDs in Series 2 Channel Output

• Red LEDs Output Voltage: V

RED

= 10.2V

• White LEDs Output Voltage: V

WHITE

= 13.09V

• Fast Startup

• Tight LED Current Regulation: <±5%

• Supports Cirrus Logic Product CS1630

General Description

The CRD1630-10W reference design demonstrates the

performance of the CS1630 resonant mode AC/DC

dimmable LED driver IC with constant current output

driving 495mA for white LEDs and 206mA for red LEDs in

series 2 channel output configuration. It offers best-in-class

dimmer compatibility with leading-edge, trailing-edge, and

digital dimmers. Additionally, it offers superior 2 channel

control with single channel LED temperature compensation

for LED color mixing applications. The form factor is

targeted to fit into many LED bulb applications (A19, PAR).

DIMENSIONS (OVERALL)

Length Width Height

For more information, see Figure 3.

ORDERING INFORMATION

CRD1630-10W-Z 10 Watt Reference Design

Supports CS1630

2.401 60.99mm1.087 27.61mm0.676 17.17mm

FEB ‘13

DS1004RD2

Summary of content (24 pages)

PAGE 1
CRD1630-10W CRD1630-10W 10 Watt Reference Design Features General Description • Quasi-resonant Flyback with Constant-current Output The CRD1630-10W reference design demonstrates the performance of the CS1630 resonant mode AC/DC dimmable LED driver IC with constant current output driving 495mA for white LEDs and 206mA for red LEDs in series 2 channel output configuration. It offers best-in-class dimmer compatibility with leading-edge, trailing-edge, and digital dimmers.
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CRD1630-10W 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.
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CRD1630-10W 1. INTRODUCTION The CS1630 is a 120VAC quasi-resonant flyback mode dimmable LED controller IC. The CS1630 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 CS1630 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.
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2.
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CRD1630-10W 3. BILL OF MATERIALS Reference BR1 C1 C2 C3, C15, C17 C4 C5 C6 C7 C8 C9 C10, C12 C11 C13, C18 C14, C16 C19 C20 C21 C24 D1, D6, D8, D10 D2 D3 D5 D7 D9 D11 D15 FH1 L3 L4 Q1 Q2 Q3 Q4 Q5 R1 R2, R12 R3 R4, R5, R10 R6 R7 R8, R16 R9, R11 R13, R14, R17, R18 R19 R20 R21 R22 R23 R24 R25 R26 R29 R33 TX1 U1 U2 Z2 Description IC RECT BRIDGE 0.5A 600V 4SOIC CAP CER 150PF 50V 5% NP0 0603 CAP CER 1.0UF 25V X7R 10% 0603 CAP CER 0.
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4. BOARD LAYOUT CRD1630-10W DS1004RD2 Figure 3.
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DS1004RD2 7 CRD1630-10W Figure 4.
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CRD1630-10W DS1004RD2 Figure 5.
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DS1004RD2 9 CRD1630-10W Figure 6.
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CRD1630-10W DS1004RD2 Figure 7.
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CRD1630-10W 5. THERMAL IMAGING Figure 8. Top Thermal Figure 9.
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6. DIMMER COMPATIBILITY - A19 WITH CS1630 (108V - 132V) 10.74W Input Power 1217/1230 Dimmer Compatibility 79.9% Efficiency Date 9/25/2012 Power Factor1,5 0.955 Vendor Cirrus Logic IEC-61000-3-2 Compliant (Y/N)2,5 N/A Input Voltage/Frequency 120V/60Hz EN55015 Compliant (Y/N) Y Form Factor A19 Nominal Input Power (W)1,5 10.74 Model # CRD1630 Maximum Input Power (W)1,5,6 11 1,3 IC CS1630 Output Voltage Ch1/Ch2 (V) 13.09/10.
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DS1004RD2 Dimmer Type Flicker Free Steady-State Monotonic Dimming Ch1 Max IOUT Ch1 Min IOUT Ch2 Max IOUT Ch2 Min IOUT (mA) (mA) (mA) (mA) # of lamps # of lamps # of lamps # of lamps # of lamps # of lamps TOTAL 1 Y 5 Y 10 Y 1 Y 5 Y 10 Y 1 499 5 498 10 498 1 10 5 10 10 10 1 204 5 210 10 209 1 7 5 7 10 7 30 Leviton - Leading Edge Y Y Y Y Y Y 498 498 498 10 10 10 206 210 210 7 7 7 30 Leviton - Leading Edge Y Y Y Y Y Y 498 498 500 28 28 27 20
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CRD1630-10W 7. INDUCTOR CONSTRUCTION The CRD1630-10W 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 CRD1630-10W. 7.
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CRD1630-10W 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 - 4K - VRMS Flyback Transformer Electrical Strength (Note 9) Primary Inductance (Note 10) fresonant=10kHz, 0.3V at 20°C LP - 3.95 - mH Primary Leakage Inductance (Note 10) fresonant=10kHz, 0.3V at 20°C LK - 60 - H Primary DC Resistance (Note 10) tDCR =20°C - 12.
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CRD1630-10W 9. PERFORMANCE PLOTS 0.6 0.5 Current (A) 0.4 0.3 0.2 0.1 0 20 40 60 80 100 120 140 160 Dim Angle (° ) Leading Edge for White LED Trailing Edge for White LED 180 Trailing Edge for Red LED Leading Edge for Red LED Figure 13. Maximum Output Current vs. Dim Angle 12 Real Power (W) 10 8 6 4 2 0 20 40 60 80 100 120 140 160 180 Dim Angle (°) Trailing Edge Leading Edge Figure 14. Typical Input Power vs.
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CRD1630-10W 0.60 Output Current (A) 0.50 0.40 0.30 0.20 0.10 IWhite IRed 0.00 100 105 110 115 120 125 130 135 140 Input Voltage (VAC) Figure 15. Output Current vs. Line Voltage, 108VAC to 132VAC 82 81 Efficiency (%) 80 79 78 77 76 75 105 110 115 120 125 130 135 Input Voltage (VAC) Figure 16. Typical Efficiency vs.
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CRD1630-10W 1.00 0.99 0.98 Power Factor 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.90 105 110 115 120 125 130 135 Input Voltage (VAC) Figure 17. Power Factor vs.
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CRD1630-10W Figure 18. No-dimmer Mode, Startup 120 VAC Figure 19.
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CRD1630-10W Figure 20. Boost FET, Q1, Waveform Figure 21.
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CRD1630-10W Figure 22. LED Currents at Maximum Dim Angle, Turn-on Waveforms Figure 23.
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CRD1630-10W Figure 24.
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CRD1630-10W 10. CONDUCTED EMI Device Under Test: CRD1630-10W Operating Conditions: NOMINAL at 25C Test Specification: EN555022 Operator Name: JC Scan Settings (1 Range) Frequencies Receiver Settings Start Stop Step Res BW M-Time Atten Preamp 150kHz 30MHz 4.5kHz 9kHz (6dB) 10ms Auto Off Final Measurement Detectors: PK+, AV Peaks: 10 Meas Time: See scan settings Acc. Margin: 3dB dBμV 100.0 90.0 Limits 55022MQP 55022MAV 80.0 70.0 60.0 50.0 Transducer ENV216 40.
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CRD1630-10W 11. REVISION HISTORY Revision Date RD1 OCT 2012 Initial release. RD2 FEB 2013 Final release and corrected typographical error.