Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LNK408 Datasheet(PDF) 3 Page - Power Integrations, Inc.

Part # LNK408
Description  LinkSwitch-PH LED Driver IC Family
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

LNK408 Datasheet(HTML) 3 Page - Power Integrations, Inc.

  LNK408 Datasheet HTML 1Page - Power Integrations, Inc. LNK408 Datasheet HTML 2Page - Power Integrations, Inc. LNK408 Datasheet HTML 3Page - Power Integrations, Inc. LNK408 Datasheet HTML 4Page - Power Integrations, Inc. LNK408 Datasheet HTML 5Page - Power Integrations, Inc. LNK408 Datasheet HTML 6Page - Power Integrations, Inc. LNK408 Datasheet HTML 7Page - Power Integrations, Inc. LNK408 Datasheet HTML 8Page - Power Integrations, Inc. LNK408 Datasheet HTML 9Page - Power Integrations, Inc. Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 20 page
background image
Rev. D 08/11
3
LNK403-409/413-419
www.powerint.com
Functional Description
A LinkSwitch-PH device monolithically integrates a controller and
high-voltage power FET 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 (sense and logic) circuit, 5.9 V regulator,
hysteretic over-temperature protection, frequency jittering,
cycle-by-cycle current limit, auto-restart, inductance correction,
power factor and constant current control.
FEEDBACK Pin Current Control Characteristics
The figure shown below illustrates the operating boundaries of
the FEEDBACK pin current. Above I
FB(SKIP) switching is disabled
and below I
FB(AR) the device enters into auto-restart.
Figure 5.
FEEDBACK Pin Current Characteristic.
The FEEDBACK pin current is also used to clamp the maximum
duty cycle to limit the available output power for overload and
open-loop conditions. This duty cycle reduction characteristic
also promotes a monotonic output current start-up
characteristic to prevent over-shoot.
REFERENCE Pin
The REFERENCE pin is tied to ground (SOURCE) via an
external resistor. The value selected sets the internal
references, determining the operating mode for dimming
(LNK403-409) and non-dimming (LNK413-419) operation and
the line undervoltage and overvoltage thresholds of the
VOLTAGE MONITOR pin. For non-dimming or PWM dimming
applications with LNK413-419, the external resistor should be a
24.9 kW ±1%, for high-line and universal input voltage designs,
and 49.9 kW ±1% for low-line input voltage designs. For phase
angle AC dimming with LNK403-409, the external resistor
should be a 49.9 kW ±1%. One percent resistors are
recommended as the resistor tolerance directly affects the
output tolerance. Other resistor values should not be used.
BYPASS Pin Capacitor Power Gain Selection
LinkSwitch-PH devices have the capability to tailor the internal
gain to either full or a reduced output power setting. This allows
selection of a larger device to minimize dissipation for both
thermal and efficiency reasons. The power gain is selected with
the value of the BYPASS pin capacitor. The full power setting is
selected with a 100 mF capacitor and the reduced power setting
(for higher efficiency) is selected with a 10 mF capacitor. The
BYPASS pin capacitor sets both the internal power gain as well
as the over-current protection (OCP) threshold. Unlike the
larger devices, the LNK4x3 power gain is not programmable.
Use a 10 mF capacitor for the LNK4x3.
Switching Frequency
The switching frequency is 66 kHz. To further reduce the EMI
level, the switching frequency is jittered (frequency modulated)
by approximately ±1 kHz.
Soft-Start
The controller includes a soft-start timing feature which inhibits
the auto-restart protection feature for the soft-start period (t
SOFT)
to distinguish start-up into a fault (short-circuit) from a large
output capacitor. At start-up the LinkSwitch-PH clamps the
maximum duty cycle to reduce the output power. The total
soft-start period is t
SOFT.
Remote ON/OFF and EcoSmart
The VOLTAGE MONITOR pin has a 1 V threshold comparator
connected at its input. This voltage threshold is used for
remote ON/OFF control. When a signal is received at the
VOLTAGE MONITOR pin to disable the output (VOLTAGE
MONITOR pin tied to ground through an optocoupler photo-
transistor) the LinkSwitch-PH will complete its current switching
cycle before the internal power FET is forced off.
The remote ON/OFF feature can also be used as an eco-mode
or power switch to turn off the LinkSwitch-PH and keep it in a
very low power consumption state for indefinite long periods.
When the LinkSwitch-PH is remotely turned on after entering
this mode, it will initiate a normal start-up sequence with
soft-start the next time the BYPASS pin reaches 5.9 V. In the
worst case, the delay from remote on to start-up can be equal
to the full discharge/charge cycle time of the BYPASS pin. This
reduced consumption remote off mode can eliminate expensive
and unreliable in-line mechanical switches.
IFB(AR)
IFB(DCMAXR)
DC10
DCMAX
IFB(SKIP)
IFB
PI-5433-060410
Skip-Cycle
CC Control
Region
Soft-Start and
CC Fold-Back
Region
Auto-Restart
Maximum Duty Cycle


Similar Part No. - LNK408

ManufacturerPart #DatasheetDescription
logo
Power Integrations, Inc...
LNK408 POWERINT-LNK408 Datasheet
1Mb / 20P
   Single-Stage PFC, Primary-Side Constant Current Control and TRIAC Dimming/Non-Dimming Options
June 2015
LNK408EG POWERINT-LNK408EG Datasheet
1Mb / 20P
   Single-Stage PFC, Primary-Side Constant Current Control and TRIAC Dimming/Non-Dimming Options
June 2015
LNK408LG POWERINT-LNK408LG Datasheet
1Mb / 20P
   Single-Stage PFC, Primary-Side Constant Current Control and TRIAC Dimming/Non-Dimming Options
June 2015
More results

Similar Description - LNK408

ManufacturerPart #DatasheetDescription
logo
Power Integrations, Inc...
LYT4317E POWERINT-LYT4317E Datasheet
2Mb / 20P
   LYTSwitch High Power LED Driver IC Family
LYT4312 POWERINT-LYT4312 Datasheet
2Mb / 20P
   LYTSwitch High Power LED Driver IC Family
LNK362GN-TL POWERINT-LNK362GN-TL Datasheet
789Kb / 16P
   LinkSwitch-XT Family Energy Effi cient, Low Power Off-Line Switcher IC
logo
Allegro MicroSystems
SLA7075M ALLEGRO-SLA7075M Datasheet
363Kb / 13P
   Motor Driver IC Family
SLA7070M ALLEGRO-SLA7070M Datasheet
350Kb / 12P
   Motor Driver IC Family
logo
Power Integrations, Inc...
LNK302P POWERINT-LNK302P Datasheet
712Kb / 20P
   LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC
LNK306DN-TL POWERINT-LNK306DN-TL Datasheet
712Kb / 20P
   LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC
LNK302GN POWERINT-LNK302GN Datasheet
712Kb / 20P
   LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC
LNK305GN-TL POWERINT-LNK305GN-TL Datasheet
712Kb / 20P
   LinkSwitch-TN Family Lowest Component Count, Energy-Effi cient Off-Line Switcher IC
logo
IK Semicon Co., Ltd
IK2108A IKSEMICON-IK2108A Datasheet
547Kb / 21P
   LED Driver IC
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com