|
|
PDF LNK613 Data sheet ( Hoja de datos )
| Número de pieza | LNK613 | |
| Descripción | Accurate CV/CC Switcher | |
| Fabricantes | Power Integrations | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LNK613 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
LNK603-606/613-616
LinkSwitch®-II Family
Energy-Efficient, Accurate CV/CC Switcher
for Adapters and Chargers
Product Highlights
Dramatically Simplifies CV/CC Converters
• Eliminates optocoupler and all secondary CV/CC control circuitry
• Eliminates all control loop compensation circuitry
Advanced Performance Features
• Compensates for transformer inductance tolerances
• Compensates for input line voltage variations
• Compensates for cable voltage drop (LNK61X series)
• Compensates for external component temperature variations
• Very tight IC parameter tolerances using proprietary trimming
technology
• Frequency jittering greatly reduces EMI filter cost
• Even tighter output tolerances achievable with external resistor
selection/trimming
• Programmable switching frequency up to 85 kHz to reduce
transformer size
Advanced Protection/Safety Features
• Auto-restart protection reduces power delivered by >95% for
output short circuit and control loop faults (open and shorted
components)
• Hysteretic thermal shutdown – automatic recovery reduces
power supply returns from the field
• Meets high voltage creepage requirements between DRAIN and
all other pins both on the PCB and at the package
EcoSmart® – Energy Efficient
• Easily meets all global energy efficiency regulations
• No-load consumption below 30 mW at 230 VAC with optional
external bias winding
• ON/OFF control provides constant efficiency down to very light
loads – ideal for CEC and ENERGY STAR 2.0 regulations
• No current sense resistors – maximizes efficiency
Green Package
• Halogen free and RoHS compliant package
Applications
• Chargers for cell/cordless phones, PDAs, MP3/portable audio
devices, adapters, LED drivers, etc.
Description
The LinkSwitch-II dramatically simplifies low power CV/CC
charger designs by eliminating an optocoupler and secondary
control circuitry. The device introduces a revolutionary control
technique to provide very tight output voltage and current
regulation, compensating for transformer and internal parameter
tolerances along with input voltage variations.
Wide Range
High Voltage
DC Input
D
LinkSwitch-II
S
FB
BP/M
PI-4960-011510
(a) Typical Application Schematic
VO ±5%
±10%
PI-4906-041008
(b) Output Characteristic
IO
Figure 1. Typical Application/Performance – Not a Simplified Circuit (a) and
Output Characteristic Envelope (b). (see Application Section for
more information).
Output Power Table
Product3
LNK603/613PG/DG
LNK604/614PG/DG
LNK605/615PG/DG
LNK606/616PG/GG/DG
85-265 VAC
Adapter1
Open Frame2
2.5 W
3.3 W
3.5 W
4.1 W
4.5 W
5.1 W
5.5 W
6.1 W
Table 1. Output Power Table.
Notes:
1. Minimum continuous power in a typical non-ventilated enclosed adapter
2.
measured
Maximum
at +50 °C ambient, device,
practical continuous power
TinJ
<100 °C.
an open frame
design
with
adequate
heatsinking, measured at 50 °C ambient (see Key Applications Considerations
section for more information).
3. Packages: P: DIP-8C, G: SMD-8C, D: SO-8C.
The device incorporates a 700 V power MOSFET, a novel ON/OFF
control state machine, a high voltage switched current source for
self biasing, frequency jittering, cycle-by-cycle current limit and
hysteretic thermal shutdown circuitry onto a monolithic IC.
www.powerint.com
January 2010
1 page  
LNK603-606/613-616
istic and frequency control for constant current (CC) regulation.
The feedback resistors (R5 and R6) were selected using
standard 1% resistor values to center both the nominal output
voltage and constant current regulation thresholds.
Key Application Considerations
Output Power Table
The data sheet maximum output power table (Table 1) repre-
sents the maximum practical continuous output power level
that can be obtained under the following assumed conditions:
1. The minimum DC input voltage is 90 V or higher at 85 VAC
input. The value of the input capacitance should be large
enough to meet these criteria for AC input designs.
2. Secondary output of 5 V with a Schottky rectifier diode.
3. Assumed efficiency of 70%.
4.
5.
DThisecopnatritniusobuosamrdomdeouonpteerdatwiointh(KSPO>U1R.3C)E.
pins
soldered
to
a
sufficient area of copper to keep the SOURCE pin tempera-
ture at or below 90 °C.
6. Ambient temperature of 50 °C for open frame designs and
an internal enclosure temperature of 60 °C for adapter
designs.
Note: Higher output power are achievable if an output CC
tolerance >±10% is acceptable, allowing the device to be
operated at a higher SOURCE pin temperature.
Output Tolerance
LinkSwitch-II provides an overall output tolerance (including line,
component variation and temperature) of ±5% for the output
voltage in CV operation and ±10% for the output current during
CC operation over a junction temperature range of 0 °C to 100 °C
for the P/G package. For the D package (SO8) additional CC
variance may occur due to stress caused by the manufacturing
flow (i.e. solder-wave immersion or IR reflow). A sample power
supply build is recommended to verify production tolerances for
each design.
BYPASS Pin Capacitor Selection
For LinkSwitch-II 60x Family of Devices (without output
cable voltage drop compensation)
A 1 mF BYPASS pin capacitor is recommended. The capacitor
voltage rating should be greater than 7 V. The capacitor’s
dielectric material is not important but tolerance of capacitor
should be ≤ ±50%. The capacitor must be physically located
close to the LinkSwitch-II BYPASS pin.
For LinkSwitch-II 61x Family of Devices (with output cable
voltage drop compensation)
The amount of output cable compensation can be selected with
the value of the BYPASS pin capacitor. A value of 1 mF selects
the standard cable compensation. A 10 mF capacitor selects
the enhanced cable compensation. Table 2 shows the amount
of compensation for each LinkSwitch-II device and capacitor
value. The capacitor can be either ceramic or electrolytic but
tolerance and temperature variation should be ≤ ±50%.
LinkSwitch-II Output Cable Voltage Drop Compensation
Device
BYPASS Pin
Capacitor Value
Output Voltage
Change Factor
LNK613
1 μF
10 μF
1.035
1.055
LNK614
1 μF
10 μF
1.045
1.065
LNK615
1 μF
10 μF
1.050
1.070
LNK616
1 μF
10 μF
1.060
1.090
Table 2. Cable Compensation Change Factor vs Device and BYPASS Pin
Capacitor Value.
The output voltage that is entered into PIXls design spreadsheet
is the voltage at the end of the output cable when the power
supply is delivering maximum power. The output voltage at the
terminals of the supply is the value measured at the end of the
cable multiplied by the output voltage change factor.
LinkSwitch-II Layout Considerations
Circuit Board Layout
LinkSwitch-II is a highly integrated power supply solution that
integrates on a single die, both, the controller and the high
voltage MOSFET. The presence of high switching currents and
voltages together with analog signals makes it especially
important to follow good PCB design practice to ensure stable
and trouble free operation of the power supply. See Figure 5 for
a recommended circuit board layout for LinkSwitch-II.
When designing a printed circuit board for the LinkSwitch-II
based power supply, it is important to follow the following
guidelines:
Single Point Grounding
Use a single point (Kelvin) connection at the negative terminal of
the input filter capacitor for the LinkSwitch-II SOURCE pin and
bias winding return. This improves surge capabilities by
returning surge currents from the bias winding directly to the
input filter capacitor.
Bypass Capacitor
The BYPASS pin capacitor should be located as close as
possible to the SOURCE and BYPASS pins.
Feedback Resistors
Place the feedback resistors directly at the FEEDBACK pin of
the LinkSwitch-II device. This minimizes noise coupling.
Thermal Considerations
The copper area connected to the SOURCE pins provides the
LinkSwitch-II heat sink. A good estimate is that the LinkSwitch-II
will dissipate 10% of the output power. Provide enough copper
area to keep the SOURCE pin temperature below 90 °C. Higher
temperatures are allowable only if an output current (CC)
tolerance above ±10% is acceptable. In this case a maximum
SOURCE pin temperature below 110 °C is recommended to
provide margin for part to part RDS(ON) variation.
www.powerint.com
5
Rev. F 01/10
5 Page 
Typical Performance Characteristics
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85 110 135
Temperature (°C)
Figure 9. Current Limit vs. Temperature.
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85 110 135
Temperature (°C)
Figure 11. Frequency Ratio vs. Temperature (Constant Current).
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85 110 135
Temperature (°C)
Figure 13. Feedback Voltage vs. Temperature.
www.powerint.com
LNK603-606/613-616
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85
Temperature (°C)
Figure 10. Output Frequency vs. Temperature.
110 135
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85 110 135
Temperature (°C)
Figure 12. Frequency Ratio vs. Temperature (Inductor Current).
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40 -15 10 35 60 85 110 135
Temperature (°C)
Figure 14. Normalized Output Current vs. Temperature.
11
Rev. F 01/10
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet LNK613.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LNK613 | Accurate CV/CC Switcher | Power Integrations |
| LNK614 | Accurate CV/CC Switcher | Power Integrations |
| LNK615 | Accurate CV/CC Switcher | Power Integrations |
| LNK616 | Accurate CV/CC Switcher | 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 |