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) LED replacement lamps and luminaires. They feature Cirrus - Trailing-edge Dimmers Logics proprietary digital dimmer compatibility control technology - Digital Dimmers (with Integrated Power Supply) and digital correlated color temperature (CCT) control system that Correlated Color Temperature (CCT) Control System enables two-channel LED color mixing. The CS1630 is designed Up to 85% Efficiency for 120VAC line voltage applications, and the CS1631 is Flicker-free Dimming optimized for 230VAC line voltage applications. Programmable Dimming Profile - 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 topologies. The digital CCT control system provides the ability to End-of-line Programming Using Power Line Calibration program dimming profiles, such as constant CCT dimming and - Lower LED Binning Requirement black body line dimming. The CS1630/31 optimizes LED color Programmable Series or Parallel Two-Channel Output mixing by temperature compensating LED current with an - Interleaved Output Eliminates Additional Transformer external NTC. The IC controller is also equipped with power line Programmable Quasi-resonant Second Stage with calibration for remote system calibration and end-of-line Constant-current Output programming. The CS1630/31 provides a register lockout feature - Flyback, Buck, and Tapped Buck for security against potential access to proprietary registers. Register Lockout Fast Startup Tight LED Current Regulation: Better than 5% Applications Primary-side Regulation (PSR) Dimmable Retrofit LED Lamps and LED Luminaries >0.9 Power Factor High CRI Lighting IEC-61000-3-2 Compliant Offline LED Drivers Soft Start Commercial Lighting Protections: - Output Open/Short - Current-sense Resistor Open/Short Ordering Information - External Overtemperature Using NTC See page 55. L1 L2 V V rect BST T1 D6 LED2+ R8 R15 D10 R10 C8 Z2 C11 C3 R3 R5 R6 R9 Z3 C9 D7 LED2- C6 R2 R4 D9 D3 R7 1 16 BR1 BR1 D11 BSTAUX BSTOUT VCC C5 D4 Q Q5 3 D CLAMP Q3 GND LED 1+ R12 R16 R1 2 C10 IAC C12 D8 Q4 AC C2 13 CS1630 /31 GD LED 1- Mains D2 Q2 15 5 FBAUX IGND SOURCE C1 11 D5 FBSENSE Q1 10 14 eOTP VDD D1 Z1 C4 BR1 BR1 R13 R S R11 SGND GND CNTC C7 4 12 NTC R14 Cirrus Logic, Inc. Copyright Cirrus Logic, Inc. 2013 CS1630/31 TABLE OF CONTENTS 1.INTRODUCTION . 4 2.PIN DESCRIPTION . 5 3.CHARACTERISTICS AND SPECIFICATIONS 6 3.1 Electrical Characteristics 6 2 3.2 I C 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 2 5.11 I C Communication Interface 23 2 5.11.1 I C Control Port Protocol . 23 5.11.2 Control Port Enable . 24 5.11.3 Read Operation 24 5.11.4 Write Operation 25 2 5.11.5 Customer I C Lockout . 25 5.12 OTP Memory 26 5.12.1 Programming the OTP Memory 26 2 DS954F3