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
L1
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
.
V
B S T
T1
Z2
R15 D10
Z3
LED2-
D11
V CC _
Q
V
rec t
L2
D6
R8
R10
LED2+
C11
C8
C3
R2
R3
R4
D3
C5
R5
C6
R6
R7
1
BSTAUX
16
R9
D7
D9
BSTOUT
CLAMP
3
C9
BR1
BR1
D4
Q3
R12
Q4
D8
Q5
R16
C10
LED 1+
C12
LED 1-
D
GND
R1
2
C2
D2
Q2
5
IAC
AC
Mains
C1
CS1630 /31
SOURCE
GD
FBAUX
13
15
11
10
R
S
IGND
Q1
BR1
BR1
D1
Z1
C4
D5
14
VDD
SGND
4
FBSENSE
eOTP
R13
C
NTC
R11
R14
C7
GND
12
NTC
Cirrus Logic, Inc.
Copyright
Cirrus Logic, Inc. 2012
(All Rights Reserved)
DEC’12
DS954F2
APEX [ CIRRUS LOGIC ]
