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| 型号： | LNK603GG-TL |
| 厂商： | POWER INTEGRATIONS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | GREEN, PLASTIC, SMD-8 |
| 文件页数： | 16/20页 |
| 文件大小： | 722K |
| 代理商： | LNK603GG-TL |
Rev. C 06/08
5
LNK603-606/613-616
www.powerint.com
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:
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.
Secondary output of 5 V with a Schottky rectier diode.
Assumed efciency of 70%.
Discontinuous mode operation (K
P >1.3).
The part is board mounted with SOURCE pins soldered to a
sufcient area of copper to keep the SOURCE pin tempera-
ture at or below 90 °C.
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
ow (i.e. solder-wave immersion or IR reow). 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 μF 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 μF selects
the standard cable compensation. A 10 μF 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%.
1.
2.
3.
4.
5.
6.
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 lter 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 lter 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 R
DS(ON) variation.
LinkSwitch-II Output Cable Voltage Drop Compensation
Device
Bypass Pin
Capacitor Value
Output Voltage
Change Factor
LNK613
1 μF
1.035
10 μF
1.055
LNK614
1 μF
1.045
10 μF
1.065
LNK615
1 μF
1.050
10 μF
1.070
LNK616
1 μF
1.060
10 μF
1.090
Table 2.
Cable Compensation Change Factor vs Device and BYPASS Pin
Capacitor Value.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LNK603PG | 功能描述:交流/直流开关转换器 85-265 VAC 2.5W LinkSwitch II RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| LNK603PG-TL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy-Efficient, Accurate CV/CC Switcher for Adapters and Chargers |
| LNK604 | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy-Efficient, Accurate CV/CC Switcher for Adapters and Chargers |
| LNK604DG | 功能描述:交流/直流开关转换器 3.5 W (85-265 VAC) RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| LNK604DG-TL | 功能描述:交流/直流开关转换器 85-265 VAC 3.5W LinkSwitch II RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
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