|
|
PDF LNK403 Data sheet ( Hoja de datos )
| Número de pieza | LNK403 | |
| Descripción | (LNK403 - LNK419) LinkSwitch-PH LED Driver IC Family | |
| Fabricantes | Power Integrations | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LNK403 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
|
No Preview Available !
www.DataSheet.co.kr
LNK403-409/413-419
LinkSwitch™-PH LED Driver IC Family
Single-Stage PFC, Primary-Side Constant Current Control
and TRIAC Dimming/Non-Dimming Options
Product Highlights
Dramatically Simplifies Off-line LED Drivers
• Single-stage combination of power factor correction and
accurate constant-current (CC) output
• Enables very long lifetime designs (no electrolytic capacitors)
• Eliminates optocoupler and all secondary current control
circuitry
• Eliminates control loop compensation circuitry
• Simple primary-side PWM dimming interface
• Universal input voltage range
• LNK403-409 optimized for flicker-free TRIAC dimming
EcoSmart™ – Energy Efficient
• Single-stage PFC combined with output CC control
• Greatly increases efficiency, >90% achievable
• Reduces component count
• No current sense resistors
• Low standby power remote ON/OFF feature
(<50 mW at 230 VAC)
Accurate and Consistent Performance
• Compensates for transformer inductance variations
• Compensates for line input voltage variation
• Frequency jittering greatly reduces EMI filter size and cost
Advanced Protection and Safety Features
• Auto-restart for short-circuit protection
• Open circuit fault detection mode
• Automatic thermal shutdown restart with hysteresis
• Meets high voltage creepage requirement between DRAIN and
all other signal pins both on PCB and at package
Green Package
• Halogen free and ROHS compliant package
Applications
• Off-line LED driver
Description
The LinkSwitch-PH dramatically simplifies implementation of LED
drivers requiring long lifetime, high efficiency, PF >0.9, and TRIAC
dimming capability (LNK403-409). The single-stage combined
power factor and constant-current controller eliminates a switching
stage and the electrolytic bulk capacitor. The advanced primary-
side control used by the LinkSwitch-PH device provides accurate
constant current control while eliminating the need for an
optocoupler and current sensing circuits.
LinkSwitch-PH incorporates a 725 V power FET, a continuous-
mode PWM controller, a high voltage switched current source for
self biasing, frequency jittering, protection circuitry including
cycle-by-cycle current limit and hysteretic thermal shutdown.
www.powerint.com
RV
AC
IN D V LinkSwitch-PH
CONTROL
BP
S R FB
Figure 1. Typical Application Schematic.
PI-6543-082211
Output Power Table1,2
Product 5
LNK403/413E/L
LNK404/414E/L
LNK405/415E/L
LNK406/416E/L
LNK407/417E/L
LNK408/418E/L
LNK409/419E/L
RV = 2 MW
85-132 VAC
Minimum
Output
Power 3
Maximum
Output
Power 4
2.5 W
4.5 W
2.5 W
5.5 W
3.8 W
7.0 W
4.5 W
8.0 W
5.5 W
10 W
6.8 W
13.5 W
8.0 W
20 W
RV = 4 MW
85-308 VAC
Minimum
Output
Power 3
Maximum
Output
Power 4
6.5 W
12 W
6.5 W
15 W
8.5 W
18 W
10 W
22 W
12 W
25 W
16 W
35 W
18 W
50 W
Table 1. Output Power Table.
Notes:
1. Continuous power in an open frame with adequate heat sinking at device local
ambient of 70 °C.
2. Power level calculated on typical LED string voltage with efficiency >80%.
3.
4.
MMianximimuummoouutptpuuttppoowweerrwwitihthCCBBPP==1100m0Fm. F.
LNK4x3EG CBP = 10 mF.
5. Package: eSIP-7C, eSIP-7F.
eSIP-7C (E Package)
Figure 2. Package Options.
eSIP-7F (L Package)
August 2011
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LNK403-409/413-419
Application Example
14 W TRIAC Dimmable High Power Factor LED Driver
Design Example
The circuit schematic in Figure 7 shows a TRIAC dimmable high
power-factor LED driver based on LNK406EG from the
LinkSwitch-PH family of devices. It was optimized to drive an
LED string at a voltage of 28 V with a constant current of 0.5 A
(±5%) ideal for PAR lamp retro-fit applications. The design
operates over a universal input voltage range of 90 VAC to
265 VAC but provides the specified output current tolerance
over a line voltage range of 90 VAC to 132 VAC (this is configurable
for high-line only applications by simple component value changes).
The key goals of this design were compatibility with standard
leading edge TRIAC AC dimmers, very wide dimming range
(1000:1, 500 mA:0.5 mA), high efficiency (>85%) and high power
factor (>0.9). The design is fully protected from faults such as
no-load, overload and output short-circuit conditions and over
temperature.
Circuit Description
The LinkSwitch-PH device (U1) integrates the power FET,
controller and start-up functions into a single package reducing
the component count versus typical implementations. Configured
as part of an isolated continuous conduction mode flyback
converter, U1 provides high power factor via its internal control
algorithm together with the small input capacitance of the
design. Continuous conduction mode operation results in
reduced primary peak and RMS current. This both reduces
EMI noise, allowing simpler, smaller EMI filtering components and
improves efficiency. Output current regulation is maintained
without the need for secondary side sensing which eliminates
current sense resistors and improves efficiency.
Input Stage
Fuse F1 provides protection from component failures while RV1
provides a clamp during differential line surges, keeping the
peak drain voltage of U1 below the 725 V rating of the internal
power FET. Bridge rectifier BR1 rectifies the AC line voltage.
EMI filtering is provided by L1-L3, C1, R16 and R17 together with
the safety rated Y class capacitor (C7) that bridges the safety
isolation barrier between primary and secondary. Resistor R16
and R17 act to damp any resonances formed between L1, L2,
C1 and the AC line impedance. A small bulk capacitor (C2) is
required to provide a low impedance source for the primary
switching current. The maximum value of C1 and C2 is limited in
order to maintain a power factor of greater than 0.9.
LinkSwitch-PH Primary
To provide peak line voltage information to U1 the incoming
rectified AC peak charges C3 via D2. This is then fed into the
VOLTAGE MONITOR pin of U1 as a current via R2 and R3. This
sensed current is also used by the device to set the line input
overvoltage and undervoltage protection thresholds. Resistor
R1 provides a discharge path for C3 with a time constant much
longer than that of the rectified AC to prevent generation of line
frequency ripple.
The VOLTAGE MONITOR pin current and the FEEDBACK pin
current are used internally to control the average output LED
current. For TRIAC phase-dimming applications a 49.9 kΩ
resistor (R4) is used on the REFERENCE pin and 4 MΩ (R2+R3)
on the VOLTAGE MONITOR pin to provide a linear relationship
between input voltage and the output current and maximizing
the dimming range. Resistor R4 also sets the internal line input
undervoltage and overvoltage protection thresholds.
F1
L 3.15 A
90 - 265
VAC RV1
275 VAC
N
R16
1 kΩ
L1
1000 µH
L2
1000 µH
R17
1 kΩ
L3
1000 µH
R9
750 kΩ
1%
BR1
2KBP06M
600 V
R10
750 kΩ
1%
R18
510 Ω
1W
C1
47 nF
275 VAC
C11
220 nF
630 V
D1
DL4002
R11
2.4 MΩ
Q1
FMMT558
C6
15 nF
50 V
VR2
ZMM5245B-7
15 V
R12
15 Ω
1%
Q2
IRFR310
R13
130 Ω
1/2 W
R1
240 kΩ
1/2 W
D2
DL4007
VR1
P6KE200A
D3
UF4007
C2
100 nF
630 V
R2
2 MΩ
1%
R3
2 MΩ
1%
C3
1 µF
400 V
D
LinkSwitch-PH
U1
LNK406EG
D4
UF4002
D5
1N4148
R5
V 3 kΩ
CONTROL
BP
S R FB
R4
49.9 kΩ
1%
C4
10 µF
16 V
11 FL1
C8 C10
330 µF 330 µF R15
50 V 50 V 20 kΩ
D8
MBRS4201T3G
1 FL2
3
T1
RM8
2
R8 D6
150 Ω DL4936
R7
10 kΩ
C5
22 µF
50 V
28 V, 500 mA
RTN
R6
162 kΩ
1%
Q3
MMBT3904
VR3
ZMM5259B-7
39 V
R19
1 kΩ
C13
100 nF
50 V
R20
10 kΩ
D7
BAV21WS-7-F
C12
1 µF
50 V
C7
2.2 nF
250 VAC
PI-5997-061510
Figure 7. Schematic of an Isolated, TRIAC Dimmable, High Power Factor, Universal Input, 14 W LED Driver.
www.powerint.com
5
Rev. D 08/11
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LNK403-409/413-419
Layout Considerations
Primary Side Connections
Use a single point (Kelvin) connection at the negative terminal of
the input filter capacitor for the SOURCE pin and bias returns.
This improves surge capabilities by returning surge currents
from the bias winding directly to the input filter capacitor. The
BYPASS pin capacitor should be located as close to the
BYPASS pin and connected as close to the SOURCE pin as
possible. The SOURCE pin trace should not be shared with the
main power FET switching currents. All FEEDBACK pin
components that connect to the SOURCE pin should follow the
same rules as the BYPASS pin capacitor. It is critical that the
main power FET switching currents return to the bulk capacitor
with the shortest path as possible. Long high current paths
create excessive conducted and radiated noise.
Secondary Side Connections
The output rectifier and output filter capacitor should be as
close as possible. The transformer’s output return pin should
have a short trace to the return side of the output filter capacitor.
Input EMI Filter
R2
F1
L RV1
N
L1 C2
L2
Bulk Capacitor
R14
L3
C9
Clamp
FL1
LNK403EG
6
1
VR1
C3
C8
D1
U1
2
T1
Transformer
5
4
3
C7
C12
R3
R16
Copper Area for
Heat Sinking
Figure 12. RD-193 7 W Layout Example, Top Layer.
VR3
R24
C14
C5
D8R10
C6
V
BYPASS Pin
Capacitor
Output
C4 Filter
Capacitors
V
PI-5987-060110
www.powerint.com
11
Rev. D 08/11
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LNK403.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LNK403 | (LNK403 - LNK419) LinkSwitch-PH LED Driver IC Family | Power Integrations |
| LNK403EG | LED Driver IC | Power Integrations |
| LNK404 | (LNK403 - LNK419) LinkSwitch-PH LED Driver IC Family | Power Integrations |
| LNK404EG | LED Driver IC | Power Integrations |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |