CS1610/11
CS1612/13
TRIAC Dimmable LED Driver IC
Features & Description
Overview
• Best-in-Class Dimmer Compatibility
- Leading-edge (TRIAC) Dimmers
- Trailing-edge Dimmers
- Digital Dimmers (with Integrated Power Supply)
• Up to 90% Efficiency
• Optimized for <25W Input Power
• Flicker-free Dimming
• 0% Minimum Dimming Level
• Quasi-resonant Second Stage with Constant-current Output
- Flyback and Buck
The CS1610/11/12/13 is a digital control IC engineered to deliver
a high-efficiency, cost-effective, flicker-free, phase-dimmable,
solid-state lighting (SSL) solution for the incandescent lamp
replacement market. The CS1610/11 is designed to control a
quasi-resonant flyback topology. The CS1612/13 is designed to
control a buck topology. The CS1610/12 and CS1611/13 are
designed for 120VAC and 230VAC line voltage applications,
respectively.
The CS1610/11/12/13 integrates a critical conduction mode
(CRM) boost converter that provides power factor correction and
dimmer compatibility with a constant output current, quasi-
resonant second stage. An adaptive dimmer compatibility
algorithm controls the boost stage and dimmer compatibility
operation mode to enable flicker-free operation to <2% output
current with leading-edge, trailing-edge, and digital dimmers
(dimmers with an integrated power supply).
• 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
Applications & Description
•
•
•
•
Dimmable Retrofit LED Lamps
Dimmable LED Luminaries
Offline LED Drivers
Commercial Lighting
Ordering Information
See page 15.
L1
T1
L2
D8
VBST
C8
Vrect
LED+
LED-
D6
R8
R9
C9
R10
Z2
C3
R2
R3
R4
R5
C6
R6
D7
1
16
D3
C5
R7
BR1
BR1
BSTAUX
BSTOUT
D4
3
CLAMP
Q3
R1
2
5
IAC
Q4
AC
Mains
C2
CS1610/11
13
15
R12
Q2
D5
D2
GD
SOURCE
FBAUX
Q1
C1
11
10
FBSENSE
eOTP
14
8
R13
VDD
IPK
D1
Z1
C4
BR1
BR1
RS
R11
FBGAIN
CNTC
SGND
GND
12
C7
4
9
NTC
R
IP K
RFBGAIN
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2012
MAY’12
(All Rights Reserved)
DS929F5