RDK-257 Power Integrations, RDK-257 Datasheet

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RDK-257

Manufacturer Part Number
RDK-257
Description
REFERENCE DESIGN LINKSWITCH-PH
Manufacturer
Power Integrations
Series
LinkSwitch®-PHr
Datasheet

Specifications of RDK-257

Design Resources
RDR-257
Current - Output / Channel
330mA
Outputs And Type
1, Non-Isolated
Voltage - Output
36V
Voltage - Input
90 ~ 265VAC
Utilized Ic / Part
LNK405EG
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
596-1424
LNK403-409EG/413-419EG
LinkSwitch-PH Family
LED Driver IC, Single-Stage PFC, Primary-Side Constant Current
Control and TRIAC Dimming/Non-Dimming Device Options
Product Highlights
Dramatically Simplifies Off-line LED Drivers
Accurate and Consistent Performance
Advanced Protection and Safety Features
EcoSmart
Green Package
Applications
Description
The LinkSwitch-PH dramatically simplifies implementation of LED
drivers requiring PF >0.9, TRIAC dimmer capability (LNK403-409)
and high efficiency. The single-stage PF and constant current
controller eliminates passive circuitry required for power factor
correction and electrolytic bulk capacitor. The advanced primary-
side control techniques used by the LinkSwitch-PH device provide
accurate constant current control while eliminating the need for an
optocoupler and secondary-side current control circuitry.
LinkSwitch-PH incorporates a 725 V power MOSFET, a
continuous-mode PWM controller, a high voltage switched
current source for self biasing, frequency jittering, cycle-by-cycle
current limit and hysteretic thermal shutdown circuitry, all in a
monolithic IC.
www.powerint.com
LNK403-409 family is optimized for flicker-free operation in
TRIAC dimming applications
Single stage power factor corrected and accurate constant
current (CC) output
Eliminates optocoupler and all secondary current control
circuitry
Eliminates all control loop compensation circuitry
Simple primary-side PWM dimming interface
Universal input voltage range
Enables designs that are electrolytic-free
Compensates for transformer inductance tolerances
Compensates for line input voltage variations
Frequency jittering greatly reduces EMI filter size and costs
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
Low standby power remote ON/OFF feature
(<50 mW at 230 VAC)
No current sense resistors – maximizes efficiency
High efficiency operation, >85% achievable
Halogen free and ROHS compliant package
Off-line LED driver
– Energy Efficient
Figure 1.
Output Power Table
LNK403/413EG
LNK404/414EG
LNK405/415EG
LNK406/416EG
LNK407/417EG
LNK408/418EG
LNK409/419EG
Table 1.
Notes:
1. Continuous power in an open frame with adequate heat sinking at device local
2. Power level calculated on typical LED string voltage with efficiency >80%.
3. Minimum output power with C
4. Maximum output power with C
5. Package: eSIP-7C.
AC
IN
ambient of 70 °C.
Product
Typical Application Schematic.
Output Power Table.
5
R V
Minimum
Power
Output
2.5 W
2.5 W
3.8 W
4.5 W
5.5 W
6.8 W
8.0 W
1,2
D
S
85-132 VAC
R
V
3
CONTROL
BP
BP
= 2 MW
R
= 10 mF.
V
= 100 mF. LNK4x3EG C
Maximum
LinkSwitch-PH
FB
Power
13.5 W
Output
BP
4.5 W
5.5 W
7.0 W
8.0 W
10 W
20 W
4
Minimum
Power
Output
6.5 W
6.5 W
8.5 W
10 W
12 W
16 W
18 W
BP
85-308 VAC
R
= 10 mF.
V
3
= 4 MW
November 2010
PI-5430-080610
Maximum
Power
Output
12 W
15 W
18 W
22 W
25 W
35 W
50 W
4

Related parts for RDK-257

RDK-257 Summary of contents

Page 1

LNK403-409EG/413-419EG LinkSwitch-PH Family ™ LED Driver IC, Single-Stage PFC, Primary-Side Constant Current Control and TRIAC Dimming/Non-Dimming Device Options Product Highlights Dramatically Simplifies Off-line LED Drivers LNK403-409 family is optimized for flicker-free operation in • TRIAC dimming applications Single stage power ...

Page 2

LNK403-409EG/413-419EG BYPASS (BP) BYPASS CAPACITOR SELECT I LIM 1 V VOLTAGE MONITOR (V) STOP LOGIC 3-V T UV/OV LINE SENSE FEEDBACK (FB FEEDBACK SENSE DC REFERENCE (R) 6.4 V Figure 2. Functional Block Diagram. Pin Functional Description ...

Page 3

Functional Description A LinkSwitch-PH device monolithically integrates a controller and high-voltage power MOSFET into one package. The controller implements both high power factor and a constant current output in a single stage. The LinkSwitch-PH controller consists of an oscillator, feedback ...

Page 4

LNK403-409EG/413-419EG D V CONTROL Figure 5. Remote ON/OFF VOLTAGE MONITOR pin Control 5.9 V Regulator/Shunt Voltage Clamp The internal 5.9 V regulator charges the bypass capacitor connected to the BYPASS pin to 5 drawing a ...

Page 5

Application Example 14 W TRIAC Dimmable High Power Factor LED Driver Design Example The circuit schematic in Figure 6 shows a TRIAC dimmable high power-factor LED driver based on LNK406EG from the LinkSwitch-PH family of devices. It was optimized to ...

Page 6

LNK403-409EG/413-419EG Diode D3 and VR1 clamp the drain voltage to a safe level due to the effects of leakage inductance. Diode D4 is necessary to prevent reverse current from flowing through U1 for the period of the rectified AC input ...

Page 7

W High Power Factor Non-Dimmable LED Driver Design Example with Enhanced Line Regulation The circuit schematic in Figure 7 shows a high power-factor LED driver based on a LNK413EG from the LinkSwitch-PH family of devices. It was optimized to ...

Page 8

LNK403-409EG/413-419EG start- charged from an internal high-voltage current source tied to the device DRAIN pin. Once the bias voltage has risen into regulation the operating supply current is provided via R10. Diode D4 prevents U1 ...

Page 9

Zener clamp. The RCD clamp is more cost effective than the Zener clamp but requires more careful design to ensure that the maximum drain voltage does not exceed the power MOSFET breakdown voltage. ...

Page 10

LNK403-409EG/413-419EG 350 Voltage 300 Current 250 200 150 100 100 0 150 200 250 Conduction Angle (°) Figure 9. Example of Phase Angle Dimmer Showing Erratic Firing. Start by adding a bleeder circuit. Add a 0.44 mF ...

Page 11

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 ...

Page 12

LNK403-409EG/413-419EG S S BR1 Bridge Rectifier Figure 12. RD-193 7 W Layout Example, Bottom Layer. Quick Design Checklist Maximum Drain Voltage Verify that the peak V does not exceed 725 V under all DS operating conditions including start up and ...

Page 13

Absolute Maximum Ratings (1,4) DRAIN Pin Peak Current : LNK403, LNK413 ...................1.37 A (5) LNK404, LNK414 ...................2.08 A LNK405, LNK415 ...................2.72 A LNK406, LNK416 .................. 4.08 A LNK407, LNK417 .................. 5.44 A LNK408, LNK418 .................. 6.88 A LNK409, LNK419 ................... ...

Page 14

LNK403-409EG/413-419EG Parameter Symbol Control Functions (cont.) I CD2 Drain Supply Current I CD1 VOLTAGE MONITOR Pin Line Brown-In I Threshold Current UV+ Line Brown-Out I Threshold Current UV- Line Brown-In/Out I Hysteresis UV(H) Line Overvoltage I Threshold OV VOLTAGE MONITOR ...

Page 15

Parameter Symbol Auto-Restart Auto-Restart ON-Time t AR Auto-Restart DC Duty Cycle AR SOA Minimum Switch t ON-Time ON(SOA) FEEDBACK Pin Current During I FB(AR) Auto-Restart REFERENCE Pin REFERENCE Pin V Voltage R REFERENCE Pin I Current R Current Limit/Circuit Protection ...

Page 16

LNK403-409EG/413-419EG Parameter Symbol Output ON-State Resistance R DS(ON) OFF-State Drain I Leakage Current DSS Breakdown Voltage BV DSS Minimum Drain Supply Voltage Rise Time t R Fall Time t F NOTES: A. For specifications with negative values, a negative temperature ...

Page 17

Typical Performance Characteristics 10000 Scaling Factors: LNK403, LNK413 0.18 LNK404, LNK414 0.28 LNK405, LNK415 0.38 LNK406, LNK416 0.56 1000 LNK407, LNK417 0.75 LNK408, LNK418 1.00 LNK409, LNK419 1.16 100 0 0 100 200 300 DRAIN Pin Voltage (V) Figure 14. ...

Page 18

LNK403-409EG/413-419EG 2 0.403 (10.24) A 0.397 (10.08 0.325 (8.25) 0.320 (8.13) Pin #1 I.D. 0.070 (1.78) Ref. 0.050 (1.27) 3 FRONT VIEW 10° Ref. All Around 0.021 (0.53) 0.019 (0.48) 0.048 (1.22) 0.046 (1.17) 0.378 (9.60) Ref. 0.019 ...

Page 19

LNK403-409EG/413-419EG 19 Rev. B 11/10 ...

Page 20

... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www ...

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