ZLED7031 Datasheet, PDF (1/20 Pages) Integrated Device Technology – Isolated and Non-isolated Flyback LED Driver with Active PFC

Isolated and Non-isolated Flyback
LED Driver with Active PFC
ZSLS7031
Datasheet
Brief Description
The ZSLS7031 is a primary-side controlled, peak-
current-mode high-brightness LED flyback driver
that supports both isolated and non-isolated
designs with active power factor correction (PFC).
The device works at a constant frequency in
discontinuous conduction mode to provide con-
stant power to the output. It eliminates the need for
an opto-coupler, TL431 shunt regulator, or any
other type of secondary-side feedback device. It
operates from a wide input voltage range of
85VAC to 265VAC.
The ZSLS7031 integrates over-current and over-
voltage protection, as well as a thermal shutdown
to halt the switching action in the event of abnor-
mally high operating temperatures.
Benefits
• High efficiency
• Minimum bill of materials
• Small form-factor package
• No loop compensation required
• Isolated and non-isolated applications
Features
• Power factor PF > 0.95 depending on
application
• Wide application input voltage range: 85V to
265VAC
• Internal over-temperature protection
• Output over-voltage protection (OVP)
• Output over-current protection (OCP) on
primary side
Available Support
• Evaluation Kit
Physical Characteristics
• Operating temperature:-45°C to 105°C
• Maximum junction temperature: 150°C
• Package: MSOP-8, RoHS-compliant
ZSLS7031 Typical Isolated Application
Fus e
L
85VAC to 265VAC
N
DB1 to DB4
R5 _C3
C1
R1
R3
D1
D2
IC1 ZSLS7031
1
VSINE
8
VCC
2
n.c.
7
GATE
R2
3
FSET
6
CS
4
GND
5
FB
C2
Rset
D3
Q1
R6
C5
C4 ^{R9 Rcs R7}
D4
TR
LED+
C6 ^R8
LED1 to LEDn
LED-
© 2016 Integrated Device Technology, Inc.
1
January 26, 2016