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參數(shù)資料
| 型號： | LNK500G-TL |
| 廠商： | POWER INTEGRATIONS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Energy Efficient, CV or CV/CC Switcher for Very Low Cost Adapters and Chargers |
| 中文描述： | 0.4 A SWITCHING REGULATOR, 49.5 kHz SWITCHING FREQ-MAX, PDSO7 |
| 封裝： | PLASTIC, SMT, DIP-8 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 505K |
| 代理商： | LNK500G-TL |
10
LNK500
B
3/03
Figure 11. Recommended Circuit Board Layout for LinkSwitch using P Package.
Quick Design Checklist
As with any power supply design, all
LinkSwitch
designs should
be verified on the bench to make sure that component
specifications are not exceeded under worst case conditions.
Note: In a
LinkSwitch
circuit, the SOURCE is a switching node.
This should be taken into consideration during testing.
Oscilloscope measurements should be made with probe
grounded to DC voltages such as primary return or DC rail but
not to SOURCE. Power supply input voltage should always be
supplied using an isolation transformer. The following minimum
set of tests is strongly recommended:
1. Maximum drain voltage
–
Verify that V
does not exceed
675 V at highest input voltage and peak output power.
2. Maximum drain current
–
At maximum ambient temperature,
maximum input voltage and peak output power, verify drain
current waveforms at start-up for any signs of transformer
saturation and excessive leading edge current spikes.
LinkSwitch
has a minimum leading edge blanking time of
200 ns to prevent premature termination of the on-cycle.
Verify that the leading edge current spike event is below
current limit at the end of the 200 ns blanking period.
3. Thermal check
–
At peak output power, minimum input
voltage and maximum ambient temperature, verify that the
temperature specifications are not exceeded for
LinkSwitch
,
transformer, output diode and output capacitors. Enough
thermal margin should be allowed for part-to-part variation
of the R
of
LinkSwitch
as specified in the data sheet.
Under low line, peak power, a maximum
LinkSwitch
SOURCE pin temperature of 100
°
C is recommended to
allow for these variations.
4. Centered output characteristic
–
Using a transformer with
nominal primary inductance and at an input voltage midway
between low and high line, verify that the peak power point
occurs at the desired nominal output current, with the correct
output voltage. If this does not occur then the design should
be refined to ensure the overall tolerance limits are met.
Design Tools
Up to date information on design tools can be found at the
Power Integrations Web site:
www.powerint.com.
+
-
HV DC
Input
PI-2900-070202
Transformer
+
-
DC Out
D
S
S
S
S
S
C
LinkSwitch
Y1-
Capacitor
Input Filter
Capacitor
Output
Capacitor
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LNK500P | 功能描述:IC SWIT OCP CV/CC HV 8DIP RoHS:否 類別:集成電路 (IC) >> PMIC - AC-DC 轉(zhuǎn)換器，離線開關 系列:LinkSwitch® 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
| LNK500P_1 | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:2.4W Cell Phone Charger |
| LNK500PN | 功能描述:交流/直流開關轉(zhuǎn)換器 3W 85-265 VAC 4W 230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| LNK500P-TL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Energy Efficient, CV or CV/CC Switcher for Very Low Cost Adapters and Chargers |
| LNK501 | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Energy Efficient, CV/CC Switcher for Very Low Cost Chargers and Adapters |
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