CS1630 Datasheet, PDF (1/56 Pages) Cirrus Logic – 2-Channel TRIAC Dimmable LED Driver IC

CS1630
CS1631
2-Channel TRIAC Dimmable LED Driver IC
Features
• Best-in-class Dimmer Compatibility
- Leading-edge (TRIAC) Dimmers
- Trailing-edge Dimmers
- Digital Dimmers (with Integrated Power Supply)
• Correlated Color Temperature (CCT) Control System
• Up to 85% Efficiency
• Flicker-free Dimming
• Programmable Dimming Profile
- Constant CCT Dimming
- Black Body Line Dimming
• 0% Minimum Dimming Level
• Temperature Compensated LED Current
• End-of-line Programming Using Power Line Calibration
- Lower LED Binning Requirement
• Programmable Series or Parallel Two-Channel Output
- Interleaved Output Eliminates Additional Transformer
• Programmable Quasi-resonant Second Stage with
Constant-current Output
- Flyback, Buck, and Tapped Buck
• Register Lockout
• Fast Startup
• Tight LED Current Regulation: Better than ±5%
• Primary-side Regulation (PSR)
• >0.9 Power Factor
• IEC-61000-3-2 Compliant
• Soft Start
• Protections:
- Output Open/Short
- Current-sense Resistor Open/Short
- External Overtemperature Using NTC
Overview
The CS1630 and CS1631 are high-performance offline AC /DC
LED drivers for dimmable and high color rendering index (CRI)
LED replacement lamps and luminaires. They feature Cirrus
Logic’s proprietary digital dimmer compatibility control technology
and digital correlated color temperature (CCT) control system that
enables two-channel LED color mixing. The CS1630 is designed
for 120VAC line voltage applications, and the CS1631 is
optimized for 230VAC line voltage applications.
The CS1630/31 integrates a critical conduction mode boost
converter, providing power factor correction and superior dimmer
compatibility with a primary-side regulated quasi-resonant second
stage, which is configurable for isolated and non-isolated
topologies. The digital CCT control system provides the ability to
program dimming profiles, such as constant CCT dimming and
black body line dimming. The CS1630/31 optimizes LED color
mixing by temperature compensating LED current with an
external NTC. The IC controller is also equipped with power line
calibration for remote system calibration and end-of-line
programming. The CS1630/31 provides a register lockout feature
for security against potential access to proprietary registers.
Applications
• Dimmable Retrofit LED Lamps and LED Luminaries
• High CRI Lighting
• Offline LED Drivers
• Commercial Lighting
Ordering Information
See page 55.
L1
BR1
BR1
AC
Mains
BR1
R1
C2
C1
BR1
Vr ec t
C3
R3
R2
R4
D2
Q1
D1
Z1 C4
L2
R5
D3
C6
C5 D4
D6
R6
R7
1
BSTAUX
R8
R9
16
BSTOUT
CLAMP ³
2 _IAC
CS1630 /31 GD ¹³
Q2
5 _SOURCE
FBAUX ¹⁵
D5
FBSENSE ¹¹
14 _VDD
eOTP ¹⁰
C7
SGND
4
GND
12
V_{B S T}
T1
R10 C8 Z2
D7
Q3
Q4
R_S
NTC
CNTC R11
R15 D10
C9 Z3
D9
R12
VCC _
Q
D
GN D
D8
R16
C10
LED2+
C11
LED2-
D11
Q5
LED 1+
C12
LED 1-
IGND
R13
R14
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2012
(All Rights Reserved)
DEC’12
DS954F2