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PDF FLS3217M Data sheet ( Hoja de datos )
| Número de pieza | FLS3217M | |
| Descripción | Single-Stage PFC Primary-Side-Regulation Offline LED Driver | |
| Fabricantes | Fairchild Semiconductor | |
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July 2014
FLS3217 / FLS3247
Single-Stage PFC Primary-Side-Regulation Offline
LED Driver with Integrated Power MOSFET
Features
Cost-Effective Solution without Input Bulk Capacitor
and Feedback Circuitry
Power-Factor Correction (PFC)
Integrated Power MOSFET
Accurate Constant-Current (CC) Control
Independent Online Voltage, Output Voltage, and
Magnetizing Inductance Variation
Linear Frequency Control for Increased Efficiency
Open / Short-LED Protection
Cycle-by-Cycle Current Limiting
Over-Temperature Protection with Auto Restart
Low Startup Current: 20μA
Low Operating Current: 5mA
VDD Over-Voltage Protection (OVP)
VDD Under-Voltage Lockout (UVLO)
Application Voltage Range: 80 VAC ~ 308 VAC
Applications
LED Lighting System
Description
This highly integrated PWM controller with power
MOSFET, FLS3217 / FLS3247, provides several
features to enhance the performance of low-power
flyback converters. The proprietary topology enables
simplified circuit design for LED lighting applications.
By using the single-stage topology with primary-side
regulation, an LED lighting board can be implemented
with the few external components and minimized cost;
requiring no input bulk capacitor or feedback circuitry.
To implement good power factor and low THD, constant
on-time control is utilized with an external capacitor
connected to COMI.
Precise constant-current control regulates accurate
output current versus changes in input voltage and
output voltage. The operating frequency is proportionally
changed by the output voltage to guarantee DCM
operation with higher efficiency and simple design.
FLS3217 and FLS3247 provide protection features such
as open-LED, short-LED, and over-temperature
protection. The current-limit level is automatically
reduced to minimize the output current and protect
external components in short-LED condition.
Ordering Information
Part Number
Operating
Temperature Range
FLS3217M
FLS3217N
-40°C to +125°C
FLS3247N
.
Package
Packing Method
7-Lead, Small Outline Package (SOIC)
Tape & Reel
7-Lead, Small Outline Package (DIP)
Tube
© 2012 Fairchild Semiconductor Corporation
FLS3217 / FLS3247 • Rev. 1.0.1
www.fairchildsemi.com
1 page  
Electrical Characteristics
Unless otherwise specified, VDD=15 V and TA=25°C.
Symbol
Parameter
Condition
MOSFET Section
BVDSS
RDS(ON)
Drain-Source Breakdown Voltage
Static Drain-Source
On Resistance
FLS3217M
FLS3217N
FLS3247N
FLS3217M
CISS Input Capacitance FLS3217N
FLS3247N
FLS3217M
COSS
Output Capacitance FLS3217N
FLS3247N
ID=250 µA, VGS=0 V
ID=0.5 A, VGS=10 V
ID=1 A, VGS=10 V
VGS=0 V, VDS=25 V,
fS=1 MHz
VGS=0V, VDS=25V,
fS=1MHz
VDD Section
VDD-ON
VDD-OFF
IDD-OP
IDD-ST
VOVP
Turn-On Threshold Voltage
Turn-Off Threshold Voltage
Operating Current
Startup Current
VS=2.4 V, CL=MOSFET
CISS
VDD=VDD-ON – 0.16 V
VDD Over-Voltage Protection Level
Oscillator Section
fMAX-CC
fMIN-CC
VSMAX-CC
Maximum Frequency in CC
VDD=10 V, 20 V
Minimum Frequency in CC
VDD=10 V, 20 V
VS for Maximum Frequency in CC
Frequency=Maximum
Frequency-2 kHz
VSMIN-CC
VS for Minimum Frequency in CC
Frequency=Minimum
Frequency +1 kHz
tON(MAX) Maximum Turn-on Time
Current-Sense Section
VRV
VCCR
Reference Voltage
Variation Test Voltage on CS Pin
for Constant Current Regulation
VCS=0.24 V
tLEB Leading-Edge Blanking Time
tMIN Minimum On Time in CC
VVS=-0.5 V, VCS=1.5 V
tPD
Propagation Delay to GATE
Output
DSAW
tDIS-BNK
Duty Cycle of SAW Limiter
tDIS Blanking Time of VS
IVS-BNK
VS Current for VS Blanking
Min. Typ. Max. Unit
700 V
13 16 Ω
8.8 11.0 Ω
2.4 2.8 Ω
175 200 pF
250 pF
435 pF
23 25 pF
25 pF
51 pF
14.5 16.0 17.5
6.75 7.75 8.75
V
V
2.85 4.00 5.00 mA
2 20 μA
22.0 23.5 25.0
V
60 65 70 kHz
21.0 23.5 26.0 kHz
2.25 2.35 2.45
V
0.55 0.85 1.15
V
12 14 16 μs
2.475 2.500 2.525
V
2.38 2.43 2.48
V
300 ns
600 ns
50 100 150 ns
40 %
1.5 μs
100 μA
Continued on the following page…
© 2012 Fairchild Semiconductor Corporation
FLS3217 / FLS3247 • Rev. 1.0.1
5
www.fairchildsemi.com
5 Page 
Over-Temperature Protection (OTP)
The built-in temperature-sensing circuit shuts down
PWM output once the junction temperature exceeds
150°C. While PWM output is off, VDD gradually drops to
the UVLO voltage. Some of the internal circuits are shut
down and VDD gradually increases again. When VDD
reaches 16 V, all the internal circuits start operating. If
the junction temperature is still higher than 140°C, the
PWM controller shuts down immediately.
Figure 22. Waveforms at Open-LED Condition
Under-Voltage Lockout (UVLO)
The turn-on and turn-off thresholds are fixed internally at
16 V and 7.5 V, respectively. During startup, the VDD
capacitor must be charged to 16 V through the startup
resistor, so that the FLS32x7 is enabled. The VDD
capacitor supplies VDD until power can be delivered
from the auxiliary winding of the main transformer. VDD
must not drop below 7.5 V during startup. The UVLO
hysteresis window ensures that the VDD capacitor is
adequate to supply VDD during startup.
© 2012 Fairchild Semiconductor Corporation
FLS3217 / FLS3247 • Rev. 1.0.1
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet FLS3217M.PDF ] | |
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