DER-344 - Power.com

設計範例報告
標題
採用 LinkSwitchTM-PH LNK414EG 的 12.8 W 定
電流高功率因數 (PF) (大於 0.9) Tapped Buck 式
LED 驅動器
規格
140 VAC – 280 VAC 輸入;16 V、800 mA 輸出
應用
LED 嵌燈驅動器
作者
應用工程部門
文件編號
DER-344
日期
2012 年 10 月 19 日
修訂
1.0
摘要與功能
 高度節能
 230 VAC 時效率≥85%
 高功率因數 (PF),通常大於 0.95
 低總諧波失真 (THD),230 VAC 時小於 15%,可輕鬆符合 IEC 61000-3-2 C 級和 D 級標準
 低成本、所需元件極少、體積小的單面印刷電路板
 頻率抖動 (Jitter) 可讓 EMI 濾波器體積更小、成本更低
 使用低成本的 EE16 鐵芯
 整合式保護與信賴度特性
 藉由自動恢復功能提供輸出短路保護
 線間輸入過壓關機,增強了線路故障時的耐壓程度
 具有高磁滯時間的自動恢復回復過溫保護,同時保護元件和印刷電路板
 符合 IEC 61000-4-5 與 EN55015 B 傳導性 EMI 標準
專利資訊
Power Integrations 的一項或多項美國及國外專利 (或可能正在申請的美國及國外專利) 可能涵蓋本文件中所示的產品和應用 (包
括產品外部的變壓器結構和電路)。www.powerint.com 上提供了 Power Integrations 專利的完整清單。Power Integrations 授予
其客戶某些特定專利權的授權,詳情請參閱 <http://www.powerint.com/ip.htm>。
Power Integrations
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
目錄
簡介 ............................................................................................................................ 4
電源供應器規格 .......................................................................................................... 6
電路圖 ......................................................................................................................... 7
電路說明 ..................................................................................................................... 8
4.1
輸入濾波功能 ....................................................................................................... 8
4.2
電源電路和 LinkSwitch-PH 外部元件 ................................................................... 8
4.3
IFB 回授和線間補償 .............................................................................................. 9
4.4
開路負載和短路保護 ............................................................................................ 9
5 PCB 佈局 .................................................................................................................. 11
6 物料清單 ................................................................................................................... 12
7 變壓器規格................................................................................................................ 13
7.1
電氣圖................................................................................................................ 13
7.2
電氣規格 ............................................................................................................ 13
7.3
材料 ................................................................................................................... 13
7.4
電感構建圖 ........................................................................................................ 14
7.5
電感器結構 ........................................................................................................ 14
8 LNK414EG (U1) 散熱片組裝..................................................................................... 15
8.1
散熱片製造圖 ..................................................................................................... 15
8.2
散熱片組裝圖 ..................................................................................................... 16
8.3
LNK414EG (U1) 和散熱片組裝圖。 ................................................................... 17
9 效能資料 ................................................................................................................... 18
9.1
效率 ................................................................................................................... 18
9.2
線電壓與負載穩定度關係圖 ............................................................................... 19
9.3
功率因數 (PF) .................................................................................................... 20
9.4
A-THD ............................................................................................................... 21
9.5
諧波電流 ............................................................................................................ 22
9.5.1
15 V LED 負載 ............................................................................................ 22
9.5.3
16 V LED 負載 ............................................................................................ 23
9.5.4
17 V LED 負載 ............................................................................................ 24
9.6
測試資料 ............................................................................................................ 25
9.6.1
測試資料,15 V LED 負載 .......................................................................... 25
9.6.2
測試資料,16 V LED 負載 .......................................................................... 25
9.6.3
測試資料,17 V LED 負載 .......................................................................... 25
9.6.4
230 VAC 50 Hz,15 V LED 負載諧波資料 ................................................. 27
9.6.5
230 VAC 50 Hz,16 V LED 負載諧波資料 ................................................. 28
9.6.6
230 VAC 50 Hz,17 V LED 負載諧波資料 ................................................. 29
10 散熱效能 ................................................................................................................... 30
10.1
測試裝置 ........................................................................................................ 30
10.2 140 VAC,50 Hz,16 V LED 負載 .................................................................... 31
1
2
3
4
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
10.3 230 VAC,50 Hz,16 V LED 負載 ....................................................................32
10.4 280 VAC,50 Hz,16 V LED 負載 ....................................................................33
10.5 280 VAC,60 Hz,輸出短路狀況 ......................................................................34
11 波形...........................................................................................................................35
11.1
輸入線間電壓和電流 .......................................................................................35
11.2
正常運作下的輸出電壓和電流.........................................................................36
11.3
啟動時間 .........................................................................................................37
11.4
正常運作下的汲極電壓和電流.........................................................................38
11.5
正常運作下的輸出二極體 (D2) 電壓和電流 .....................................................40
11.6 LNK414EG 啟動汲極電壓和電流 .......................................................................42
11.7
輸出二極體 (D2) 啟動電壓和電流 ...................................................................42
11.8
輸出短路情況下的汲極電流和汲極電壓 ..........................................................43
11.9
輸出短路狀況下的輸出二極體 (D2) 電流和電壓 ..............................................44
12 傳導性 EMI................................................................................................................46
12.1
測試裝置 .........................................................................................................46
12.2
測試結果 .........................................................................................................47
13 線電壓突波 ................................................................................................................48
14 修訂記錄 ...................................................................................................................49
重要事項:雖然此電路板的設計符合安全隔離要求,但工程原型尚未取得相關機構之認證。因此,執行所有
測試應使用隔離變壓器才能提供 AC 輸入給原型板。
Page 3 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
1 簡介
本文件說明非隔離式高功率因數 (PF) LED 驅動器,其設計為輸入電壓範圍為 140 VAC 至
280 VAC 時,於 800 mA 下驅動 16 V 的標準 LED 串電壓。此 LED 驅動器採用
LinkSwitch-PH IC 系列中的 LNK414EG。
此設計使用 Single-stage 非隔離式連續模式 tapped buck 式架構 (將功率因數修正 (PFC)
和定電流 (CC) 整合成一個切換階段)。
高功率因數 (PF) 和低總諧波失真 (THD) 是透過採用 LinkSwitch-PH IC 來達成,此裝置也
提供眾多精密的保護功能,包括開路控制迴路與輸出短路狀況的自動重新啟動。整合式線
電壓過壓保護可提高對線路故障與突波的耐受度。
本文件包含 LED 驅動器規格、電路圖、PCB 圖、物料清單、變壓器文件及典型效能特性。
Figure 1 – Populated Circuit Board Photograph.
Power Integrations, Inc.
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
Figure 2 – Populated Circuit Board Photograph (Top View).
Figure 3 – Populated Circuit Board Photograph (Bottom View).
Page 5 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
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2 電源供應器規格
下表列出此設計可接受的最低效能。實際效能列在結果部分。
說明
符號
最小值 典型值 最大值
單位
註解
雙線 – 無 P.E.
輸入
電壓
頻率
輸出
輸出電壓
VIN
fLINE
140
230
50/60
280
VAC
Hz
VOUT
15
16
17
V
輸出電流
IOUT
800
mA
總輸出功率
連續輸出功率
效率
POUT
12.8
W
85
%

滿載
84
VOUT = 16 V,VIN = 230 VAC,
25°C
VOUT = 16 V,VIN = 230 VAC,
25°C
環境
傳導性 EMI
CISPR 15B / EN55015B
安全
振盪波 (100 kHz)
差模 (L1-L2)
共模 (L1/L2-PE)
非隔離式
差模突波
功率因數 (PF)
kV
2
kV
於 VOUT(TYP)、IOUT(TYP)
及 230 VAC、50 Hz 條件下測量
0.95
諧波電流
環境溫度
2.5
C 級規範 PIN 小於 25 W 時的 D 級
限值
EN 61000-3-2 C 級
TAMB
Power Integrations, Inc.
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60
o
C
自然對流
Page 6 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
3 電路圖
Figure 4 – Schematic.
附註:VR3 is an optional component for open load protection.
Page 7 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
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4 電路說明
LinkSwitch-PH 裝置是採用整合式 725 V 功率 MOSFET 的控制器,適用於 LED 驅動器應
用。LinkSwitch-PH 設定用於 Single-stage 連續導通模式 tapped buck 式架構,可提供已
調整的定電流輸出,同時保持 AC 輸入端的高功率因數 (PF)。
4.1
輸入濾波功能
保險絲 F1 可在發生元件故障時提供保護,而 RV1 可在發生差模線電壓突波活動期間進行
箝制,以限制最大電壓。選取 300 VAC 額定部分,其稍微高於指定的最大工作電壓 280
VAC。還增加了 TVS VR1,因為 RV1 的最大箝位電壓 (約 775 V) 高於 U1 的汲源極間最
大電壓額定值。選取 VR1,使得箝位電壓 (約 650 V) 低於 U1 的汲源極間最大電壓額定值。
橋式整流器 BR1 可利用電容器 C2 對 AC 線間電壓進行整流,來為一次側切換電流提供低
阻抗路徑 (去耦合)。為保持功率因數 (PF) 大於 0.9,需要使用小電容值 (C1 與 C2 之和)。
EMI 濾波由電感器 L1 和 L2 以及電容器 C1 和 C2 提供。L1 和 L2 上的電阻器 R2 和 R4
會抑制因濾波元件和 AC 線電壓阻抗而產生的任何 LC 諧振 (一般在測量傳導性 EMI 時出
現)。
4.2
電源電路和 LinkSwitch-PH 外部元件
此設計選用了低壓 tapped buck 式架構,設定為在 140 VAC 至 280 VAC 的輸入電壓範圍
內提供低總諧波失真 (THD)、一致的功率因數 (PF) 以及定電流輸出
tapped buck 式轉換器具有下列優勢:減小磁性元件的尺寸、主電源切換開關 U1 上的電流
應力以及輸出二極體 D2 上的電壓應力。主電源切換開關上的電流應力減小後,便可使用
較小的 LinkSwitch-PH 裝置,以提高設計的成本效益。輸出二極體上的電壓應力減小後,
便可使用低 VF (蕭特基) 裝置,以提高效率。
變壓器 T1 是降壓式轉換器的主要電感器。其包含兩組繞組,即一次側繞組和二次側繞組。
一次側與二次側圈數比選為 2:1,這樣便可使用 200 V 輸出二極體,同時保持 U1
LNK414EG 的最大電壓仍然遠低於其最大值。選擇此電感來保持 CCM 操作,以降低有效
值電流,同時符合 C 級諧波限值。
每當 U1 關閉時,輸出二極體 D2 就會傳導,並將能量輸送到負載。需要使用二極體 D3,
才能在 C2 上的電壓 (整流後的輸入 AC) 降到低於輸出電壓時防止反向電流流經 U1。還增
加了電壓箝位電路,以限制由 T1 漏電感引起的電壓突波。箝位網路由二極體 D5、電容器
C7 及電阻器 R12 構成。
為了提供峰值線間電壓資訊給 U1,輸入整流 AC 峰值電壓會透過 D1 為 C3 充電。然後,
該電壓將以透過 R3 和 R11 的電流形式饋送至 U1 的電壓監測器 (V) 接腳。R3、R11 和
R5 的組合可確定 90 VAC (電壓啟動) 至 298 VAC (OVP) 典型工作輸入電壓範圍的中心。
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
線間電壓過壓關機功能 (透過 V 接腳電流感測) 可讓整流後的線間電壓耐受度 (在突波和線
間陡昇期間) 提高至內部功率 MOSFET 的 725 BVDSS 額定值。
電容器 C4 會為 U1 的 BYPASS 接腳 (內部控制器的供電接腳) 提供本機去耦合。在啟動期
間,會從 U1 汲極接腳連接的內部高壓電流源將 C8 充電至約 6 V。電容器 C4 的值已選為
100 F,以便裝置在全功率模式下運作。
U1 的參考接腳透過電阻器 R6 接地 (源極)。針對非調光應用,使用 24.9 kΩ 的值。
4.3
IFB 回授和線間補償
饋送至 U1 回授接腳的總回授電流是輸出電壓回授電流與線間補償電流之和。
U1 用於輸出電壓回授的回授接腳電流則由電壓至電流轉換器網路提供,此網路由 R7-R10、
Q1、C6 和 D4 構成。輸出電壓會轉換成回授電流,其關係如下:
IFB  k * Vout 其中
k
1
R8
*
R7 R8  R9
還增加了總諧波失真 (THD) 線間補償,以增加 C 級奇數諧波限值的餘裕。與整流後線間輸
入電壓成比例的電流會透過電阻器 R13、R14 和 R15 饋送至 FB 接腳。
在 16 V 的典型輸出電壓下,來自 Q1 的回授電流約為 91 A。由電阻器 R13、R14 和
R15 構成的線間補償網路會在 140 VAC 至 280 VAC 的輸入電壓範圍內,增加約 28 A 至
約 57 A 的 DC 偏移量。這使得工作 IFB 在約 119 A 至約 148 A 的範圍內。還要注意的
是,在最高輸入和輸出電壓下發生的峰值瞬間 IFB 電流不應達到裝置的 IFB(SKIP) 規格。在此
設計中,在 280 VAC 輸入和 17 V 輸出條件下,峰值 IFB 電流約為 187 A。這遠遠低於裝
置的最低 IFB(SKIP),即 220 A。
4.4
開路負載和短路保護
本設備專用於在負載狀況下運作。如果在評估期間發生意外開路負載狀況,可放置積納二
極體 VR3 來箝制輸出電壓。此二極體會在開路負載狀況下短路,裝置將進入短路狀況。
線間補償的存在可防止電流在短路狀況下降到低於 IFB(AR),尤其是在高輸入電壓條件下,
且不會進入自動重新啟動操作模式。裝置的 SOA 保護模式可保護設備。當峰值切換電流
達到 ILIMIT 臨界值且切換導通時間短於 tON(SOA) 時,SOA 保護模式會將 FET 切換停用 40
個週期。下圖顯示在 280 VAC 輸入條件下發生輸出短路狀況期間的 U1 (LNK414EG) 汲極
電壓和電流。
Page 9 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
Figure 5 – 280 VAC Output Short Condition Showing SOA Protection Mode Operation.
C2:Drain Current, 500 mA / div., 500 s / div.;
C3:Drain Voltage, 100 V / div., 500 s / div.
設備還置於輸出短路、輸入電壓為 280 VAC 60 Hz 且環境溫度為 60˚C 的控制箱內。在輸
出二極體 D2 上測出的最大溫度為 91.4˚C。請參閱第 10.5 節的圖 24,瞭解此狀況下其他
元件的熱度測量值。在短路狀況下,裝置應力和外部元件保持在額定規格內。
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
5 PCB 佈局
Figure 6 – PCB Layout and Outline, Top Side (in / [mm]).
Figure 7 – Bottom Side (in / [mm]).
Page 11 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
6 物料清單
Item
1
Qty
1
Ref
Des
說明
BR1
1000 V, 0.8 A, Bridge Rectifier, SMD, MBS-1, 4SOIC
Mfg Part Number
Mfg
B10S-G
Comchip
100 nF, 630 V, Film
ECQ-E6104KF
Panasonic
ECA-2WHG010
Panasonic
EKZE100ELL101ME11D
Nippon Chemi-Con
EKZE250ELL102MK20S
Nippon Chemi-Con
2
2
3
1
C1
C2
C3
4
1
C4
5
1
C5
6
1
C6
7
1
C7
1.0 F, 450 V, Electrolytic, NHG, (8 x 11.5)
100 F, 10 V, Electrolytic, Very Low ESR, 300 m,
(5 x 11)
1000 F, 25 V, Electrolytic, Very Low ESR, 21 m,
(12.5 x 20)
1 F, 50 V, Ceramic, X7R, 0805
1000 pF, 630 V, Ceramic, X7R, 1206
8
1
C8
1 nF, 50 V, Ceramic, X7R, 0805
08055C102KAT2A
AVX
9
1
D1
1000 V, 1 A, Rectifier, DO-41
1N4007-E3/54
Vishay
10
1
D2
200 V, 4 A, Schottky, SMC, DO-214AB
MBRS4201T3G
ON Semi
11
1
D3
200 V, 1 A, Ultrafast Recovery, 25 ns, DO-214AC
12
1
D4
13
1
14
15
C2012X7R1H105M
TDK
ECJ-3FB2J102K
Panasonic
ES1D
Vishay
100 V, 0.2 A, Fast Switching, 50 ns, SOD-323
BAV19WS-7-F
Diodes, Inc.
D5
1000 V, 1 A, Ultrafast Recovery, 75 ns, DO-41
UF4007-E3
Vishay
1
F1
3.15 A, 250 V, Slow, RST
2
L1 L2
16
1
Q1
PNP, Small Signal BJT, 500 V, 0.15 A, SOT23
FMMT560TA
Zetex
17
1
510 k, 5%, 1/4 W, Carbon Film
CFR-25JB-510K
Yageo
18
2
10 k, 5%, 1/8 W, Thick Film, 0805
ERJ-6GEYJ103V
Panasonic
19
1
R1
R2
R4
R3
1.30 M, 1%, 1/4 W, Thick Film, 1206
ERJ-8ENF1304V
Panasonic
20
1
R5
200 k, 1%, 1/16 W, Thick Film, 0603
ERJ-3EKF2003V
Panasonic
21
1
R6
24.9 k, 1%, 1/16 W, Thick Film, 0603
ERJ-3EKF2492V
Panasonic
22
1
R7
41.2 k, 1%, 1/16 W, Thick Film, 0603
ERJ-3EKF4122V
Panasonic
23
1
R8
34.8 k, 1%, 1/16 W, Thick Film, 0603
ERJ-3EKF3482V
Panasonic
24
1
R9
90.9 k, 1%, 1/16 W, Thick Film, 0603
ERJ-3EKF9092V
Panasonic
25
1
CFR-25JB-47K
Yageo
26
2
2.00 M, 1%, 1/4 W, Metal Film
RNF14FTD2M00
Stackpole
27
1
100 k, 5%, 1/2 W, Carbon Film
CFR-50JB-100K
Yageo
28
2
1.10 M, 1%, 1/4 W, Thick Film, 1206
ERJ-8ENF1104V
Panasonic
29
1
R10
R11
R15
R12
R13
R14
RV1
30
1
T1
Bobbin, EE16, Vertical, 10 pins (4 x 6)
31
1
U1
32
1
VR1
33
1
HS1
Heat Sink, Custom, Al, 3003, 0.062" Thk
2.2 mH, 0.16 A, Ferrite Core
47 k, 5%, 1/4 W, Carbon Film
300 V, 25 J, 7 mm, RADIAL
507-1181
Belfuse
CTSCH875DF-222K
CT Parts
V300LA4P
Littlefuse
EL-16 (YW-193-02B)
Yih-Hwa Enterprises
LinkSwitch-PH, eSIP
LNK414EG
Power Integrations
400 V, 600 W, 5%, DO214AC (SMB)
SMBJ400A
Littlefuse
Power Integrations, Inc.
Tel:+1 408 414 9200 Fax: +1 408 414 9201
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Custom
Page 12 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
7 變壓器規格
7.1
電氣圖
10
WD4 40T AWG28
7
7
WD3 80T AWG33
5
10
WD2 40T AWG28
7
4
WD1 40T AWG33
1
Figure 8 – Inductor Electrical Diagram.
7.2
電氣規格
Primary Inductance
Resonant Frequency
7.3
Pins 5-10 all other windings open, measured at 66 kHz,
0.4 VRMS
Pins 5-10, all other windings open
900 H ±7%
0.7 MHz (Min.)
材料
Item
[1]
[2]
[3]
[4]
說明
Core:PC44 EE16 Z
Bobbin:B-EE16-V-10 ins (4/6)
Magnet Wire, #28 AWG, solderable double coated.
Magnet Wire, #33 AWG, solderable double coated.
Page 13 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
7.4
19-Oct-12
電感構建圖
10
WD4
40T AWG 28
7
WD3
80T AWG 33
7
5
10
WD2
40T AWG 28
WD1
40T AWG 33
7
4
1
Figure 9 – Inductor Build Diagram.
7.5
電感器結構
General Note
WD1
WD2
WD3
WD4
Finish
For the purpose of these instructions, bobbin is oriented on winder such that pin 1 side
is on the left.
Start at pin 1. Wind 40 turns of item [4] as shown in Figure 2. Terminate at pin 4.
Start at pin 7. Wind 40 turns of item [3] and terminate the other end at pin 10.
Start at pin 5. Wind 80 turns of item [4] as shown in Figure 2. Terminate at pin 7.
Start at pin 7. Wind 40 turns of item [3] and terminate the other end at pin 10.
Grind the core to get the specified inductance.Apply tape to secure both cores.Cut
pins 1, 2, 3, 6, and 9.
Power Integrations, Inc.
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Page 14 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
8 LNK414EG (U1) 散熱片組裝
8.1
散熱片製造圖
Figure 10 – Heat Sink Dimensions.
Page 15 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
8.2
19-Oct-12
散熱片組裝圖
Figure 11 – Heat Sink Assembly Drawing.
Power Integrations, Inc.
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Page 16 of 50
19-Oct-12
8.3
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
LNK414EG (U1) 和散熱片組裝圖。
Figure 12 – LNK414EG (U1) and Heat Sink Assembly Drawing.
Page 17 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
9 效能資料
All measurements performed at room temperature using an LED load.The following data
were measured using 3 sets of loads to represent a voltage of 15 V ~ 17 V. The table in
Section 9.6 shows complete test data values.
9.1
效率
86.5
15 V
16 V
17 V
86.0
Efficiency (%)
85.5
85.0
84.5
84.0
83.5
130
150
170
190
210
230
250
270
290
Input Voltage (VAC)
Figure 13 – Efficiency vs. Line and Load.
Power Integrations, Inc.
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Page 18 of 50
19-Oct-12
9.2
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
線電壓與負載穩定度關係圖
860
15 V
16 V
840
17 V
Output Current (mA)
820
800
780
760
740
720
130
150
170
190
210
230
250
270
Input Voltage (VAC)
Figure 14 – Regulation vs. Line and Load.
Page 19 of 50
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290
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
9.3
19-Oct-12
功率因數 (PF)
1.00
15 V
0.99
16 V
17 V
0.98
Power Factor
0.97
0.96
0.95
0.94
0.93
0.92
130
150
170
190
210
230
250
270
290
Input Voltage (VAC)
Figure 15 – Power Factor vs. Line and Load.
Power Integrations, Inc.
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Page 20 of 50
19-Oct-12
9.4
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
A-THD
16.0
15 V
16 V
17 V
15.0
A-THD (%)
14.0
13.0
12.0
11.0
10.0
130
150
170
190
210
230
250
270
Input Voltage (VAC)
Figure 16 – A-THD vs. Line and Load.
Page 21 of 50
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290
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
9.5
19-Oct-12
諧波電流
The design met the limits for Class C equipment for an active input power of <25 W. In
this case IEC61000-3-2 specifies that harmonic currents shall not exceed the limits of
Class D equipment1.Therefore the limits shown in the charts below are Class D limits
which must not be exceeded to meet Class C compliance.
9.5.1 15 V LED 負載
60
Class C (D) Limit
mA Content
Harmonic Current (mA)
50
40
30
20
10
0
3
5
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Harmonic Number (n)
Figure 17 – 15 V LED Load Input Current Harmonics at 230 VAC, 50 Hz.
1
IEC6000-3-2 Section 7.3, table 2, column 2.
Power Integrations, Inc.
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Page 22 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
9.5.3 16 V LED 負載
60
Class C (D) Limit
mA Content
Harmonic Current (mA)
50
40
30
20
10
0
3
5
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Harmonic Number (n)
Figure 18 – 16 V LED Load Input Current Harmonics at 230 VAC, 50 Hz.
Page 23 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
9.5.4 17 V LED 負載
60
Class C (D) Limit
mA Content
Harmonic Current (mA)
50
40
30
20
10
0
3
5
7
9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39
Harmonic Number (n)
Figure 19 – 17 V LED Load Input Current Harmonics at 230 VAC, 50 Hz.
Power Integrations, Inc.
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Page 24 of 50
19-Oct-12
9.6
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
測試資料
All measurements were taken with the board at open frame, 25 °C ambient.
9.6.1 測試資料,15 V LED 負載
Input Measurement
VIN
(VRMS)
140.0
6
180.0
8
220.1
2
230.1
8
265.1
6
280.2
0
IIN
(mARMS
)
101.00
81.06
69.30
67.11
60.72
58.53
PIN
(W)
13.94
3
14.25
7
14.70
2
14.82
5
15.17
0
15.31
5
功率因數
(PF)
%ATH
D
0.986
10.92
0.977
12.62
0.964
13.12
0.960
13.19
0.942
13.37
0.934
13.68
Load Measurement
IOUT
VOUT
POUT
(mADC
(VDC)
(W)
)
15.0
11.8
778.10
2
6
15.0
12.1
795.70
5
5
15.0
12.4
815.70
7
9
15.0
12.5
821.00
8
7
15.0
12.7
833.80
9
9
15.0
12.8
838.70
9
7
Calculation
Efficienc
PCAL
y
(W)
(%)
11.6
85.09
9
11.9
85.24
7
12.2
84.93
9
12.3
84.80
8
12.5
84.28
8
12.6
84.01
6
Load Measurement
IOUT
VOUT
POUT
(mADC
(VDC)
(W)
)
15.9
12.4
765.80
8
0
16.0
12.6
779.80
0
4
16.0
12.9
795.90
2
2
16.0
12.9
800.20
2
9
16.0
13.1
810.10
2
6
16.0
13.2
813.70
2
2
Calculation
Efficienc
PCAL
y
(W)
(%)
12.2
85.41
4
12.4
85.60
8
12.7
85.32
5
12.8
85.20
2
12.9
84.70
8
13.0
84.44
4
Load Measurement
IOUT
VOUT
POUT
(mADC
(VDC)
(W)
)
17.3
13.2
754.00
9
7
17.4 763.20 13.4
Calculation
Efficienc
Los
PCAL
y
s
(W)
(%)
(W)
13.1
85.79
2.20
1
13.2
86.08
2.17
Los
s
(W)
2.08
2.10
2.22
2.25
2.39
2.45
9.6.2 測試資料,16 V LED 負載
Input Measurement
VIN
(VRMS)
140.0
6
180.0
9
220.1
3
230.1
8
265.1
6
280.2
0
IIN
(mARMS
)
105.09
83.87
71.27
68.91
62.05
59.68
PIN
(W)
14.51
9
14.76
6
15.14
4
15.24
8
15.54
1
15.65
9
功率因數
(PF)
%ATH
D
0.986
11.02
0.978
13
0.965
13.6
0.961
13.7
0.945
13.95
0.936
14.15
Los
s
(W)
2.12
2.13
2.22
2.26
2.38
2.44
9.6.3 測試資料,17 V LED 負載
Input Measurement
VIN
(VRMS)
140.0
6
180.0
IIN
(mARMS
)
111.81
88.55
Page 25 of 50
PIN
(W)
15.46
2
15.60
功率因數
(PF)
%ATH
D
0.987
10.87
0.979
13.17
Power Integrations
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
8
220.1
2
230.1
8
265.1
6
280.2
0
7
74.63
72.05
64.74
62.23
15.88
4
15.97
4
16.26
5
16.38
9
1
0.967
14.13
0.963
14.2
0.948
14.48
0.940
14.64
Power Integrations, Inc.
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17.4
3
17.4
5
17.5
6
17.6
6
774.00
776.80
782.10
781.40
19-Oct-12
4
9
13.6
4
13.7
0
13.8
9
13.9
6
13.4
9
13.5
5
13.7
3
13.8
0
85.89
2.24
85.79
2.27
85.38
2.38
85.16
2.43
Page 26 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
9.6.4 230 VAC 50 Hz,15 V LED 負載諧波資料
V
230
nth
Order
1
2
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
Page 27 of 50
Freq
50.00
mA
Content
65.75
0.07
4.55
5.23
2.75
2.00
1.52
1.30
1.08
0.85
1.24
0.56
1.02
0.56
0.87
0.58
0.70
0.57
0.59
0.55
0.46
0.45
0.44
0.42
0.46
0.45
I (mA)
67.11
%
Content
0.11%
6.92%
7.95%
4.18%
3.04%
2.31%
1.98%
1.64%
1.29%
1.89%
0.85%
1.55%
0.85%
1.32%
0.88%
1.06%
0.87%
0.90%
0.84%
0.70%
0.68%
0.67%
0.64%
0.70%
0.68%
P
14.8250
Limit
<25 W
功率因數 (PF)
0.9597
Limit
>25 W
50.4050
28.1675
14.8250
7.4125
5.1888
4.3905
3.8051
3.3574
3.0040
2.7179
2.4816
2.2831
2.1139
1.9681
1.8412
1.7296
1.6308
1.5426
1.4635
2.00%
28.79%
10.00%
7.00%
5.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
總諧波失真 (THD) 百分比
13.19
Remarks
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Power Integrations
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
9.6.5 230 VAC 50 Hz,16 V LED 負載諧波資料
V
230
nth
Order
1
2
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
Freq
50.00
mA
Content
67.55
0.12
5.26
5.46
2.71
2.04
1.58
1.18
1.32
0.78
1.22
0.61
1.01
0.62
0.88
0.54
0.73
0.60
0.58
0.49
0.46
0.51
0.37
0.47
0.66
0.63
I (mA)
68.91
%
Content
0.18%
7.79%
8.08%
4.01%
3.02%
2.34%
1.75%
1.95%
1.15%
1.81%
0.90%
1.50%
0.92%
1.30%
0.80%
1.08%
0.89%
0.86%
0.73%
0.68%
0.75%
0.55%
0.70%
0.98%
0.93%
P
15.2480
Limit
<25 W
功率因數 (PF)
0.9613
Limit
>25 W
51.8432
28.9712
15.2480
7.6240
5.3368
4.5158
3.9137
3.4532
3.0897
2.7955
2.5524
2.3482
2.1743
2.0243
1.8937
1.7789
1.6773
1.5866
1.5053
2.00%
28.84%
10.00%
7.00%
5.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
Power Integrations, Inc.
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總諧波失真 (THD) 百分比
13.7
Remarks
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Page 28 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
9.6.6 230 VAC 50 Hz,17 V LED 負載諧波資料
V
230
nth
Order
1
2
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
Page 29 of 50
Freq
50.00
mA
Content
70.57
0.07
6.19
5.76
2.79
2.07
1.59
1.21
1.39
0.86
1.21
0.67
1.10
0.68
0.91
0.64
0.78
0.66
0.58
0.55
0.46
0.50
0.40
0.44
0.39
0.41
I (mA)
72.05
%
Content
0.10%
8.77%
8.16%
3.95%
2.93%
2.25%
1.71%
1.97%
1.22%
1.71%
0.95%
1.56%
0.96%
1.29%
0.91%
1.11%
0.94%
0.82%
0.78%
0.65%
0.71%
0.57%
0.62%
0.55%
0.58%
P
15.9740
Limit
<25 W
功率因數 (PF)
0.9632
Limit
>25 W
54.3116
30.3506
15.9740
7.9870
5.5909
4.7308
4.1000
3.6176
3.2368
2.9286
2.6739
2.4600
2.2778
2.1207
1.9839
1.8636
1.7571
1.6622
1.5769
2.00%
28.90%
10.00%
7.00%
5.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
3.00%
總諧波失真 (THD) 百分比
14.2
Remarks
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Power Integrations
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
10 散熱效能
10.1 測試裝置
The unit was placed inside a box and in to the chamber for an ambient of ~60˚C (ambient
inside the box).The box is closed before closing the chamber door to block the thermal
chamber fan on blowing air to the unit.Thermal measurements were taken after
approximately 1 hour for each line condition.
20Figure
Power Integrations, Inc.
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Page 30 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
SEQ Figure \* ARABIC
10.2 140 VAC,50 Hz,16 V LED 負載
Part Ref
U1
D2
D3
BR1
T1
L1
C5
AMB
說明
LinkSwitch-PH
Output Diode
Blocking Diode
Bridge Rectifier
Transformer
Differential Choke
Output Capacitor
Ambient Inside the Box
Temp, ºC
90.1
88.6
84.6
75
89.9
74.5
71.9
58.7
ΔT, ºC
31.4
29.9
25.9
16.3
31.2
15.8
13.2
Figure 21 – Thermal Reading at 140 VAC, 50 Hz, Full Load
Page 31 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
10.3 230 VAC,50 Hz,16 V LED 負載
Part Ref
U1
D2
D3
BR1
T1
L1
C5
AMB
說明
LinkSwitch-PH
Output Diode
Blocking Diode
Bridge Rectifier
Transformer
Differential Choke
Output Capacitor
Ambient Inside the Box
Temp, ºC
87.3
91.1
81.7
69.4
93.3
72.3
74.9
59.8
ΔT, ºC
27.5
31.3
21.9
9.6
33.5
12.5
15.1
Figure 22 – Thermal Reading at 230 VAC, 50 Hz, Full Load.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
10.4 280 VAC,50 Hz,16 V LED 負載
Part Ref
U1
D2
D3
BR1
T1
L1
C5
AMB
說明
LinkSwitch-PH
Output Diode
Blocking Diode
Bridge Rectifier
Transformer
Differential Choke
Output Capacitor
Ambient Inside the Box
Temp, ºC
96.4
93.2
86.5
71.5
96.3
72.1
74.6
59.2
ΔT, ºC
37.2
34
27.3
12.3
37.1
12.9
15.4
Figure 23 – Thermal Reading at 280 VAC, 50 Hz, Full Load.
Page 33 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
10.5 280 VAC,60 Hz,輸出短路狀況
Part Ref
U1
D2
D3
BR1
T1-W
L1
T1-C
AMB
說明
LinkSwitch-PH
Output Diode
Blocking Diode
Bridge Rectifier
Transformer Wire
Differential Choke
Transformer Core
Ambient Inside the Box
Temp, ºC
78
91.4
72.3
62.5
83.8
66.1
82
60.1
ΔT, ºC
17.9
31.3
12.2
2.4
23.7
6
21.9
Figure 24 – Thermal Reading at 280 VAC, 60 Hz Output Short Condition.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
11 波形
11.1 輸入線間電壓和電流
Figure 25 – 140 VAC, Full Load.
Upper:IIN, 100 mA / div.
Lower:VIN, 100 V, 10 ms / div.
Figure 26 – 230 VAC, Full Load.
Upper:IIN, 100 mA / div.
Lower:VIN, 200 V, 10 ms / div.
Figure 27 – 265 VAC, Full Load.
Upper:IIN, 50 mA / div.
Lower:VIN, 200 V, 10 ms / div.
Figure 28 – 280 VAC, Full Load.
Upper:IIN, 50 mA / div.
Lower:VIN, 200 V, 10 ms / div.
Page 35 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
11.2 正常運作下的輸出電壓和電流
Figure 29 – 140 VAC, Full Load.
Upper:IOUT, 200 mA / div.
Lower:VOUT, 5 V, 10 ms / div.
Figure 30 – 230 VAC, Full Load.
Upper:IOUT, 200 mA / div.
Lower:VOUT, 5 V, 10 ms / div.
Figure 31 – 265 VAC, Full Load.
Upper:IOUT, 200 mA / div.
Lower:VOUT, 5 V, 10 ms / div.
Figure 32 – 280 VAC, Full Load.
Upper:IOUT, 200 mA / div.
Lower:VOUT, 5 V, 10 ms / div.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
11.3 啟動時間
Figure 33 – 140 VAC Full Load.
Upper:IOUT, 200 mA / div.
Lower:VIN, 100 V / div, 100 ms / div.
Figure 34 – 230 VAC Full Load.
Upper:IOUT, 200 mA / div.
Lower:VIN, 100 V / div, 100 ms / div.
Figure 35 – 265 VAC Full Load.
Upper:IOUT, 200 mA / div.
Lower:VIN, 200 V / div, 100 ms / div.
Figure 36 – 280 VAC Full Load.
Upper:IOUT, 200 mA / div.
Lower:VIN, 200 V / div, 100 ms / div.
Page 37 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
11.4 正常運作下的汲極電壓和電流
Figure 37 – 140 VAC, 50 Hz, Full Load.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V, 5 ms / div.
Figure 38 – 140 VAC, 50 Hz, Full Load.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V / div., 10 s / div.
Figure 39 – 230 VAC, 50 Hz.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V, 5 ms / div.
Figure 40 – 230 VAC, 50 Hz.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V / div., 10 s / div.
Power Integrations, Inc.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
Figure 41 – 280 VAC, 50 Hz.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V, 5 ms / div.
Page 39 of 50
Figure 42 – 280 VAC, 50 Hz.
Upper:IDRAIN, 0.2 A / div.
Lower:VDRAIN, 100 V / div., 10 s / div.
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
11.5 正常運作下的輸出二極體 (D2) 電壓和電流
Figure 43 – 140 VAC, 50 Hz, Full Load.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V, 5 ms / div.
Figure 44 – 140 VAC, 50 Hz, Full Load.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 10 s / div.
Figure 45 – 230 VAC, 50 Hz.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V, 5 ms / div.
Figure 46 – 230 VAC, 50 Hz.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 10 s / div.
Power Integrations, Inc.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
Figure 47 – 280 VAC, 50 Hz.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V, 5 ms / div.
Page 41 of 50
Figure 48 – 280 VAC, 50 Hz.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 10 s / div.
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
11.6 LNK414EG 啟動汲極電壓和電流
Figure 49 – 140 VAC Start-up.
Upper:IDRAIN, 500 mA / div.
Lower:VDRAIN, 100 V, 50 ms / div.
Figure 50 – 280 VAC Start-up.
Upper:IDRAIN, 500 mA / div.
Lower:VDRAIN, 100 V, 50 ms / div.
11.7 輸出二極體 (D2) 啟動電壓和電流
Figure 51 – 140 VAC Start-up.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V, 50 ms / div.
Power Integrations, Inc.
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Figure 52 – 280 VAC Start-up.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V, 50 ms / div.
Page 42 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
11.8 輸出短路情況下的汲極電流和汲極電壓
During output short condition, the maximum drain-source voltage of LNK414EG was
measured at 280 VAC input.Maximum peak voltage measured was 477 V.
Figure 53 – 140 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 50 V / div., 500 ms / div.
Figure 54 – 140 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 50 V / div., 1 s / div.
Figure 55 – 230 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 100 V / div., 20 ms / div.
Figure 56 – 230 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 100 V / div., 0.5 s / div.
Page 43 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
Figure 57 – 280 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 100 V / div., 1 s / div.
19-Oct-12
Figure 58 – 280 VAC Output Short.
Upper:IDRAIN, 0.5 A / div.
Lower:VDRAIN 100 V / div., 0.5 s / div.
11.9 輸出短路狀況下的輸出二極體 (D2) 電流和電壓
During output short condition, the maximum reverse voltage of output diode D2 was
measured at 280 VAC input.Maximum peak inverse voltage measured is 190 V.
Figure 59 – 140 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 1 s / div.
Power Integrations, Inc.
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Figure 60 – 140 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 200 ns / div.
Page 44 of 50
19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
Figure 61 – 230 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 10 ms / div.
Figure 62 – 230 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 100 ns / div.
Figure 63 – 280 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 5 ms / div.
Figure 64 – 280 VAC Output Short.
Upper:ID2, 1 A / div.
Lower:VD2, 50 V / div., 200 ns / div.
Page 45 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
12 傳導性 EMI
Conducted EMI were measured at 230 VAC, 60 Hz line input, 16 V LED load, and at
room temperature.
12.1 測試裝置
Figure 65 – EMI Set-up:LED Driver and Load were Placed Inside the Cone.
Power Integrations, Inc.
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19-Oct-12
DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
12.2 測試結果
Power
02.Jul
Integrations
12
15:02
Att
dBµV
120
100
dB
9
MT
500
kHz
ms
AUTO
kHz
EN55015Q
110
1 QP
10
RBW
1
LIMIT
CHECK
MHz
10
MHz
PASS
SGL
100
CLRWR
90
2 AV
CLRWR
TDF
80
70
60
EN55015A
50
6DB
40
30
20
10
0
-10
-20
9
kHz
Date: 2.JUL.2012
30
MHz
15:02:41
Figure 66 – Conducted EMI, 16 V LED Load, 230 VAC, 60 Hz, and EN55015 B Limits.
Page 47 of 50
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
13 線電壓突波
The unit was subjected to ±2500 V 100 kHz ring wave and ±2 kV differential surge at 230
VAC using 10 strikes at each condition.A test failure was defined as a non-recoverable
interruption of output requiring supply repair or recycling of input voltage.
Level
(V)
Input
Voltage
(VAC)
Injection
Location
Injection
Phase
(°)
+2500
230
L1, L2
0
-2500
230
L1, L2
0
+2500
230
L1, L2
90
-2500
230
L1, L2
90
Level
(V)
+2 kV
-2 kV
+2 kV
-2 kV
Input
Voltage
(VAC)
230
230
230
230
Injection
Location
L1, L2
L1, L2
L1, L2
L1, L2
Injection
Phase
(°)
0
0
90
90
Type
100 kHz Ring
Wave (500 A)
100 kHz Ring
Wave (500 A)
100 kHz Ring
Wave (500 A)
100 kHz Ring
Wave (500 A)
Test Result
(Pass/Fail)
Pass
Pass
Pass
Pass
Type
Test Result
(Pass/Fail)
Surge (2)
Surge (2)
Surge (2)
Surge (2)
Pass
Pass
Pass
Pass
Figure 67 – Peak Rectified Input Voltage (Trace 1) and U1 Drain-Source Voltage (Trace 2) after 90˚ 2 kV
Differential Surge at the Input.Maximum Drain to Source Voltage Measured was 704 V.
Power Integrations, Inc.
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
14 修訂記錄
日期
19-Oct-12
Page 49 of 50
作者
CA
修訂
1.0
Description and Changes
Initial Release
Reviewed
Apps & Mktg
Power Integrations
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DER-344 12.8 W Tapped Buck LED Driver Using LNK414EG
19-Oct-12
如需最新更新,請造訪我們的網站: www.powerint.com
Power Integrations 保留隨時更改產品以提高可靠性或可製造性的權利。Power Integrations 對因使用此處所說明的任何
裝置或電路所造成的損失概不負責。POWER INTEGRATIONS 在此不作任何保證,並明確否認所有保證,包括但不限
於適售性、針對特定用途的適用性以及不侵犯第三方權利等默示保證。
專利資訊
本處所述的產品和應用 (包括 PI 裝置 IC 之外的變壓器結構和電路) 可能包含 Power Integrations 的一項或多項美國及國
外專利,或是正在申請的美國及國外專利。www.powerint.com 上提供了 Power Integrations 專利的完整清單。Power
Integrations 授予其客戶某些特定專利權的授權,詳情請參閱 <http://www.powerint.com/ip.htm>。
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HiperPFS、HiperTFS、HiperLCS、Qspeed、EcoSmart、Clampless、E-Shield、Filterfuse、StackFET、PI Expert 和 PI FACTS
均為 Power Integrations, Inc. 的商標。其他商標為其個別公司之財產。©Copyright 2013 Power Integrations, Inc.
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