CS1615
CS1616
Single Stage Dimmable Offline AC/DC
Controller for LED Lamps
Features
Overview
• Best-in-class Dimmer Compatibility
- Leading-edge (TRIAC) Dimmers
- Trailing-edge Dimmers
- Digital Dimmers (Dimmers with an Integrated Power
Supply)
• Flicker-free Dimming
The CS1615 and CS1616 are high-performance single
stage dimmable offline AC/DC controllers. The CS1615/16
is a cost-effective solution that provides unmatched single-
and multi-lamp dimmer-compatibility performance for
dimmable LED applications. The CS1615 is designed for
120VAC line voltage applications, and the CS1616 is
designed for 230VAC line voltage applications.
• 0% to 100% Smooth Dimming
• Primary-side Regulation (PSR)
Across a broad range of dimmers, the CS1615/16 provides
smooth flicker free dimming, and consistently dims to
nearly zero light output, which closely matches the dimming
performance of incandescent light bulbs. Cirrus Logic’s
patent pending approach to dimmer compatibility provides
full functionality on a wide range of dimmers, including
leading-edge, trailing-edge, and digital dimmers.
• Active Power Factor Correction (PFC)
- >0.9 Power Factor
• Constant-current Output
- Flyback
- Buck-boost
• Tight LED Current Regulation: Better than ±5%
• Low THD: Less Than 20%
• Up to 90% Efficiency
• Fast Startup
Applications
• Retro-fit LED Lamps
• External LED Drivers
• LED Luminaries
• IEC61000-3-2 Compliant
• Meets NEMA SSL 6 Dimming Standard
- Closely Matches Incandescent S-curve
• Protection Features
• Commercial Lighting
- Output Open Circuit
- Output Short Circuit
- External Overtemperature Using NTC
Ordering Information
See page 14.
L1
D4
T1
Vrect
LED+
C6
R6
C5
C7
R4
R5
LED-
VAUX
D3
R2
R3
D5
2
IAC
BR1
R1
AC
Mains
BR1
D2
Q1
CS1615/16
Q3
13
11
5
GD
SOURCE
VAUX
Q2
R7
C1
C2
FBSENSE
FBAUX
eOTP
D1
16
10
14
C8
BR1
BR1
VDD
SGND CTRL1 CTRL2 GND
12
RS
C3
C4
Z1
4
8
9
RSense
R8
NTC
RCTRL1 RCTRL2
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2013
JUN’13
DS961F1
(All Rights Reserved)