CS1630 CS1631 2-Channel TRIAC Dimmable LED Driver IC Features Overview • Best-in-class Dimmer Compatibility The CS1630 and CS1631 are high-performance offline AC/DC - Leading-edge (TRIAC) Dimmers LED drivers for dimmable and high color rendering index (CRI) - Trailing-edge Dimmers LED replacement lamps and luminaires. They feature Cirrus - Digital Dimmers (with Integrated Power Supply) Logic’s proprietary digital dimmer compatibility control technology • Correlated Color Temperature (CCT) Control System and digital correlated color temperature (CCT) control system that • Up to 85% Efficiency enables two-channel LED color mixing. The CS1630 is designed • Flicker-free Dimming for 120VAC line voltage applications, and the CS1631 is • Programmable Dimming Profile optimized for 230VAC line voltage applications. - Constant CCT Dimming The CS1630/31 integrates a critical conduction mode boost - Black Body Line Dimming converter, providing power factor correction and superior dimmer • 0% Minimum Dimming Level compatibility with a primary-side regulated quasi-resonant second • Temperature Compensated LED Current stage, which is configurable for isolated and non-isolated • End-of-line Programming Using Power Line Calibration topologies. The digital CCT control system provides the ability to - Lower LED Binning Requirement program dimming profiles, such as constant CCT dimming and • Programmable Series or Parallel Two-Channel Output black body line dimming. The CS1630/31 optimizes LED color - Interleaved Output Eliminates Additional Transformer mixing by temperature compensating LED current with an • Programmable Quasi-resonant Second Stage with external NTC. The IC controller is also equipped with power line Constant-current Output calibration for remote system calibration and end-of-line - Flyback, Buck, and Tapped Buck programming. The CS1630/31 provides a register lockout feature • Register Lockout for security against potential access to proprietary registers. • Fast Startup • Tight LED Current Regulation: Better than ±5% Applications • Primary-side Regulation (PSR) • >0.9 Power Factor • Dimmable Retrofit LED Lamps and LED Luminaries • IEC-61000-3-2 Compliant • High CRI Lighting • Soft Start • Offline LED Drivers • Protections: • Commercial Lighting - Output Open/Short - Current-sense Resistor Open/Short Ordering Information - External Overtemperature Using NTC See page 55. L1 L2 Vrect VBST T1 D6 LED2+ R8 R10 C8 Z2 R15 D10 C3 R3 R5 R6 C11 R9 C9 Z3 D7 C6 LED2- BR1 BR1 R2 R4 D3 R7 1 16 D9 BSTAUX BSTOUT D11 C5 D4 VCC _ Q Q5 CLAMP 3 Q3 D R12 GND R16 LED 1+ R1 2 C10 IAC D8 C12 AC C2 13 Q4 CS1630 /31 GD Mains LED 1- D2 Q2 15 5 FBAUX IGND SOURCE C1 D5 FBSENSE 11 Q1 10 14 eOTP VDD BR1 BR1 D1 Z1 C4 R13 RS SGND GND CNTC R11 C7 4 12 NTC R14 Cirrus Logic, Inc. Copyright Cirrus Logic, Inc. 2013 http://www.cirrus.com (All Rights Reserved) APR’13 DS954F3 CS1630/31 TABLE OF CONTENTS 1.INTRODUCTION . 4 2.PIN DESCRIPTION . 5 3.CHARACTERISTICS AND SPECIFICATIONS. 6 3.1 Electrical Characteristics . .6 3.2 I2C™ Port Switching Characteristics . .8 3.3 Power Line Calibration Characteristics . .9 3.4 Thermal Resistance . .10 3.5 Absolute Maximum Ratings . .10 4.TYPICAL PERFORMANCE PLOTS . 11 5.GENERAL DESCRIPTION . 12 5.1 Overview . .12 5.2 Startup Circuit . .12 5.3 Dimmer Switch Detection . .12 5.3.1 Dimmer Learn Mode . 12 5.3.2 Dimmer Validate Mode. 12 5.3.3 No-dimmer Mode . 12 5.3.4 Leading-edge Mode . 12 5.3.5 Trailing-edge Mode . 13 5.4 Correlated Color Temperature Control . .13 5.5 Dimming Signal Extraction and the Dim Mapping Algorithm . .14 5.6 Boost Stage . .14 5.6.1 Maximum Peak Current . 14 5.6.2 Output BSTOUT Sense & Input IAC Sense . 15 5.6.3 Boost Auxiliary Winding . 15 5.6.4 Boost Overvoltage Protection . 15 5.7 Voltage Clamp Circuit . .15 5.7.1 Clamp Overpower Protection . 16 5.8 Quasi-resonant Second Stage . .16 5.8.1 Series & Parallel Two-Channel Output . 17 5.8.2 Primary-side Current Control for Two-Channel Output . 18 5.8.3 Auxiliary Winding Configuration . 18 5.8.4 Control Parameters . 18 5.8.5 Frequency Dithering. 18 5.8.6 Output Open Circuit Protection . 19 5.8.7 Overcurrent Protection . 19 5.8.8 Open Loop Protection . 19 5.9 Overtemperature Protection . .19 5.9.1 Internal Overtemperature Protection . 19 5.9.2 External Overtemperature Protection. 19 5.10 Power Line Calibration . .21 5.10.1 Power Line Calibration Specification . 21 5.10.2 PLC Program Mode Characters. 22 5.10.3 Calibration Mode Operation Code . 22 5.10.4 Register Lockout . 23 5.11 I2C™ Communication Interface . .23 5.11.1 I2C Control Port Protocol . ..