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PDF FL6630MX Data sheet ( Hoja de datos )
| Número de pieza | FL6630MX | |
| Descripción | Single-Stage Primary-Side-Regulation PWM Controller | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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May 2015
FL6630
Single-Stage Primary-Side-Regulation PWM Controller
for PFC and LED Dimmable Driving
Features
Compatible with Traditional TRIAC Control
(No need to change existing lamp infrastructure:
wall switch & wire)
Compatible with Non-Dimming Lamp Designs
Cost-Effective Solution without Input Bulk Capacitor
and Feedback Circuitry
Power Factor Correction (PFC)
Accurate Constant-Current (CC) Control,
Independent Online Voltage, Output Voltage,
Magnetizing Inductance Variation
Line Voltage Compensation for CC Control
Linear Frequency Control for Better Efficiency and
Simple Design
Open-LED Protection
Short-LED Protection
Cycle-by-Cycle Current Limiting
Over-Temperature Protection with Auto Restart
Low Startup Current: 20 μA
Low Operating Current: 5 mA
SOP-8 Package Available
Application Voltage Range: 80 VAC ~ 308 VAC
Applications
LED Lighting System
Description
This highly integrated PWM controller, FL6630, provides
several features to enhance the performance of single-
stage flyback converters. The proprietary topology,
TRUECURRENT®, enables the simplified circuit design
for LED lighting applications.
TRIAC dimming is smoothly managed by dimming
brightness control without flicker. By using single-stage
topology with primary-side regulation, an LED lighting
board can be implemented with few external
components and minimized cost. It does not require an
input bulk capacitor or feedback circuitry. To implement
good power factor and low total harmonic distortion,
constant on-time control is utilized with an external
capacitor connected to the COMI pin.
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
Discontinuous Conduction Mode (DCM) operation with
higher efficiency and simpler design. The FL6630
provides protections such as open-LED, short-LED, and
over-temperature protections. Current-limit level is
automatically reduced to minimize output current and
protect external components in a short-LED condition.
The FL6630 controller is available in an 8-pin Small
Outline Package (SOP).
Ordering Information
Part Number Operating Temperature Range
Package
FL6630MX
-40°C to +125°C
8-Lead, Small Outline Package (SOP-8)
Packing
Method
Tape & Reel
© 2015 Fairchild Semiconductor Corporation
FL6630 • Rev. 1.0
www.fairchildsemi.com
1 page  
Electrical Characteristics
VDD=20 V and TA=25°C unless otherwise specified.
Symbol
Parameter
VDD Section
VDD-ON
VDD-OFF
Turn-On Threshold Voltage
Turn-Off Threshold Voltage
IDD-OP Operating Current
IDD-ST Startup Current
VOVP VDD Over-Voltage-Protection
Gate Section
VOL Output Voltage Low
VOH Output Voltage High
Isource Peak Sourcing Current
Isink Peak Sinking Current
tr Rising Time
tf Falling Time
VCLAMP Output Clamp Voltage
Oscillator Section
fMAX-CC Maximum Frequency in CC
fMIN-CC Minimum Frequency in CC
VSMAX-CC VS for Maximum Frequency in CC
VSMIN-CC VS for Minimum Frequency in CC
tON(MAX) Maximum Turn-On Time
Current Sense Section
VRV
VCCR
Reference Voltage
EAI Voltage for Constant Current
Regulation
tLEB
tMIN
tPD
ttdis-BNK
Leading-Edge Blanking Time
Minimum On Time in CC
Propagation Delay to GATE
tDIS Blanking Time of VS
ICOMI-BNK VS Current for COMI Blanking
Current-Error Amplifier Section
Gm Transconductance
ICOMI-SINK COMI Sink Current
ICOMI-SOURCE COMI Source Current
VCOMI-HGH COMI High Voltage
VCOMI-LOW COMI Low Voltage
Condition
Maximum Frequency,
CLOAD = 1 nF
VDD = VDD-ON – 0.16 V
VDD = 20 V,IGATE=-1 mA
VDD = 10 V,IGATE=+1 mA
VDD = 10 ~ 20 V
VDD = 10 ~ 20 V
CLOAD = 1 nF
CLOAD = 1 nF
VDD = 10 V, 20 V
VDD = 10 V, 20 V
f = fMAX-2 kHz
f = fMIN +10 kHz
VCS = 0.44 V
VCOMI = 0 V
VEAI = 3 V, VCOMI = 5 V
VEAI = 2 V, VCOMI = 0 V
VEAI = 2 V
VEAI = 3 V
Min. Typ. Max. Unit
14.5 16.0
6.75 7.75
34
2
22.0 23.5
17.5 V
8.75 V
5 mA
20 μA
25.0 V
1.5 V
5V
60 mA
180 mA
100 150 200 ns
20 60 100 ns
12 15 18 V
60 65
21.0 23.5
2.73 2.80
0.55 1.10
12 14
70 kHz
26.0 kHz
2.96 V
1.15 V
16 s
2.475
2.38
50
2.500
2.43
300
600
100
1.5
100
2.525
2.48
150
V
V
ns
ns
ns
s
A
85 mho
28 38 A
28 38 A
4.9 V
0.1 V
Continued on the following page…
© 2015 Fairchild Semiconductor Corporation
FL6630 • Rev. 1.0
5
www.fairchildsemi.com
5 Page 
Open-LED Protection
FL6630 protects external components, such as diodes
and capacitors on the secondary side, in the open-LED
condition. During switch-off, the VDD capacitor is
charged up to the auxiliary winding voltage, which is
applied as the reflected output voltage. Because the VDD
voltage has output voltage information, the internal
voltage comparator on the VDD pin can trigger output
Over-Voltage Protection (OVP), as shown in Figure 24.
When at least one LED is open-circuited, output load
impedance becomes very high and output capacitor is
quickly charged up to VOVP x Ns / Na. Then switching is
shut down and VDD block goes into “Hiccup” Mode until
the open-LED condition is removed, shown in Figure 25.
Internal
Bias
VDD 4
VOVP
VDD Good
+
-
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 to enable the FL6630. The VDD capacitor
continues to supply VDD until power can be delivered
from the auxiliary winding of the main transformer. VDD
must not drop below 7.5 V during this startup process.
This UVLO hysteresis window ensures that the VDD
capacitor is adequate to supply VDD during startup.
Over-Temperature Protection (OTP)
The built-in temperature-sensing circuit shuts down
PWM output if the junction temperature exceeds 150°C.
While PWM output is shut down, the VDD voltage
gradually drops to the UVLO voltage. Some of the
internal circuits are shut down and VDD gradually starts
increasing 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.
S Q Shutdown Gate Driver
VDD Good
R
Figure 24. Internal OVP Block
LED Open !
VDD
VDD_OVP
VDD_ON
VDD_OFF
VOUT
VDD_OVP x Ns/Na
GATE
Figure 25. Waveforms in Open-LED Condition
© 2015 Fairchild Semiconductor Corporation
FL6630 • Rev. 1.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet FL6630MX.PDF ] | |
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