Manual

ManualsBrandsCirrus Logic ManualsHardwareCRD1610-8W

Cirrus Logic, Inc.

http://www.cirrus.com

Top

Bottom

CRD1610-8W

8 Watt Reference Design

Features

• Quasi-resonant Flyback with Constant-current Output

• Flicker-free Dimming

• Line Voltage 120VAC, ±10%

• Rated Input Power: 8.1W

• Rated Output Power: 6.7W

• Output Voltage: 14.0V to 15.8V

• Efficiency: 84% at 460mA, for 5

LEDs in Series

• Low Component Count

• Supports Cirrus Logic Product CS1610

General Description

The CRD1610-8W reference design demonstrates the

performance of the CS1610 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, and digital

dimmers. 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

CRD1610-8W-Z 8 Watt Reference Design

Supports CS1610

2.284 58mm1.181 29.9mm0.59 15mm

FEB‘13

DS974RD5

Summary of content (24 pages)

PAGE 1
CRD1610-8W CRD1610-8W 8 Watt Reference Design Features General Description • Quasi-resonant Flyback with Constant-current Output The CRD1610-8W reference design demonstrates the performance of the CS1610 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, and digital dimmers. The form factor is targeted to fit into many LED bulb applications (A19, PAR).
PAGE 2
CRD1610-8W 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.
PAGE 3
CRD1610-8W 1. INTRODUCTION The CS1610 is a 120VAC quasi-resonant flyback mode dimmable LED controller IC. The CS1610 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 CS1610 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.
PAGE 4
2. SCHEMATIC ECO 2.32K L3 RM05-CL02A R6 470 2W R26 2K 2W E2 R11 R7 750K Z2 D3 2 E3 1 LED+ SS26-TP R5 27K 1% C5 ELEC 100uF E4 B8 4 LED- 1 D2 STTH1R04A 2 Q3 FQN1N50CTA R3 4.7K R14 750K D5 BAV23S-7-F R4 2K 2W R22 69.8K R15 750K R24 47 OHM C6 ELEC 22uF 2 R9 D 47 OHM 1N4148W Q2 STN3N40K3 R12 51 OHM 5 3 FBAUX SOURCE FBSENSE 14 D6 6 Q1 ZVN4106FTA C10 X7R 4.7UF 13 R19 Q4 STD1NK60T4 47 OHM U1 CS1610-FSZ S SBR130S3-7 D8 SBR130S3-7 G C8 X7R 0.
PAGE 5
CRD1610-8W 3. BILL OF MATERIALS CIRRUS LOGIC CRD1610-8W_Rev_A.bom 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 A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A B1 A A Description 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.
PAGE 6
4. BOARD LAYOUT CRD1610-8W DS974RD5 Figure 3.
PAGE 7
DS974RD5 7 CRD1610-8W Figure 4.
PAGE 8
CRD1610-8W DS974RD5 Figure 5.
PAGE 9
DS974RD5 9 CRD1610-8W Figure 6.
PAGE 10
CRD1610-8W DS974RD5 Figure 7.
PAGE 11
CRD1610-8W 5. THERMAL IMAGING Figure 8. Top Thermal Figure 9.
PAGE 12
CRD1610-8W 6. DIMMER COMPATIBILITY - PAR 16 WITH CS1610 (108V - 132V) Input Power 8.3W 836/888 Dimmer Compatibility Date 12/19/2011 Power Factor1,5 Vendor Cirrus Logic EN55015 Compliant (Y/N) 84.3% Efficiency 0.91 Y 1,5 8.3 Input Voltage 120V Nominal Input Power (W) Form Factor PAR 16 Maximum Input Power (W)2,5 8.5 Model # CRD1610-8W Output Voltage (V)1,3 14.
PAGE 13
CRD1610-8W Dimmer Type Flicker Free Steady-state Monotonic Dimming Max Iout (mA) Min Iout (mA) # of Lamps # of Lamps # of Lamps # of Lamps Total 1 5 10 1 5 10 1 5 10 1 5 10 Lutron - Trailing Edge Y Y Y Y Y Y 445 440 435 9 9 9 21 Lutron - Leading Edge Y Y Y Y Y Y 470 469 470 9 9 9 24 Lutron - Leading Edge Y Y Y Y Y Y 469 470 469 9 9 9 24 Lutron - Motion Sensor Y Y Y Y Y Y 470 469 470 0 0 0 24 Lutron - Leading Edge Y Y Y Y Y
PAGE 14
CRD1610-8W 7. INDUCTOR CONSTRUCTION The CRD1610-8W 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 CRD1610-8W. 7.
PAGE 15
CRD1610-8W 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.
PAGE 16
CRD1610-8W 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 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 80 100 120 140 160 180 Dim Angle (°) Figure 13. Typical Input Power vs.
PAGE 17
CRD1610-8W 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 85 Efficiency (%) 80 75 70 65 60 100 110 114 118 122 126 130 140 Vin (VAC) Figure 15. Typical Efficiency vs.
PAGE 18
CRD1610-8W 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.
PAGE 19
CRD1610-8W Figure 17. No-dimmer Mode, Startup 120 VAC Figure 18.
PAGE 20
CRD1610-8W Figure 19. Boost FET, Q2, Waveform Figure 20.
PAGE 21
CRD1610-8W Figure 21. ILED at Maximum Dim Angle, Turn-on Waveforms Figure 22.
PAGE 22
CRD1610-8W Figure 23.
PAGE 23
CRD1610-8W 9. CONDUCTED EMI Device Under Test: CRD1610-8W-Z Operating Conditions: NOMNIAL Test Specification: IEC 55022 Class B 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) 10ms Auto Off Final Measurement Detectors: QP, AV Peaks: 25 Meas Time: 1s Acc. Margin: 6dB dBȝV 80.0 Limits 55022MQP 55022MAV 70.0 60.0 50.0 40.0 Transducer ENV216 Traces PK+ AV 30.0 20.0 10.0 0.
PAGE 24
CRD1610-8W 10. REVISION HISTORY Revision Date RD1 DEC 2011 Initial release. RD2 JAN 2012 Content change to BOM and schematic. RD3 FEB 2012 Content change to features. RD4 JUL 2012 Corrected a typographical error. RD5 FEB 2013 Corrected typographical errors.