- 您现在的位置：买卖IC网 > Datasheet目录363 > SSL1623PH/N1,112 (NXP Semiconductors)IC LED DRVR HIG PWR AC IN 16-DIP Datasheet资料下载
参数资料
| 型号： | SSL1623PH/N1,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/18页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HIG PWR AC IN 16-DIP |
| 标准包装： | 1,000 |
| 恒定电流： | 是 |
| 拓扑： | 交直流离线开关，反激式，PWM |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 频率： | 10kHz ~ 200kHz |
| 电源电压： | 80 VAC ~ 276 VAC |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-DIP |
| 包装： | 管件 |
NXP Semiconductors
SSL1623PH
SMPS IC for mains LED drivers
8.4 Valley switching
A new cycle is started at the primary stroke when the switch is switched on (see Figure 3 ).
After a certain time (determined by the RC oscillator voltage and the internal regulation
level), the switch is turned off and the secondary stroke starts. The internal regulation
level is determined by the voltage on pin REG. After the secondary stroke, the DRAIN
voltage shows an oscillation with a frequency approximately equal to the value given by
Equation 1 .
-----------------------------
1
2 π × L p C p
(1)
Where:
L p is the primary self-inductance on the drain node.
C p is the parasitic capacitance on the drain node.
As soon as the oscillator voltage is high again and the secondary stroke has ended, the
circuit waits for a low drain voltage before starting a new primary stroke.
The primary stroke starts some time before the actual valley at low ringing frequencies,
and some time after the actual valley at high ringing frequencies. Figure 4 shows a typical
curve for a reflected voltage N × V o of 80 V. This voltage is the output voltage V o (see
Figure 5 ) transferred to the primary side of the transformer with the factor N (determined
by the turns ratio of the transformer). Figure 4 shows that the system switches exactly at
minimum drain voltage for ringing frequencies of 480 kHz, thus reducing the switch-on
losses to a minimum. At 200 kHz, the next primary stroke is started at 33 ° before the
valley. The switch-on losses are still reduced significantly.
primary
stroke
secondary
stroke
secondary
ringing
drain
valley
secondary
stroke
A
RC
regulation level
B
oscillator
col007
A: Start of new cycle with valley switching.
B: Start of new cycle in a classical system.
Fig 3.
Signals for valley switching
SSL1623PH
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 13 September 2010
? NXP B.V. 2010. All rights reserved.
6 of 18
相关PDF资料 |
PDF描述 |
|---|---|
| SSL1750T/N1,518 | IC LED DRVR HI PWR AC IN 16-SOIC |
| SSL2103T/1,518 | IC LED DRIVER SMPS DIMM 14SOIC |
| SSL21081T/1,118 | IC LED DRIVER 300V 8-SOIC |
| SSL21153T/1,118 | IC DRIVER LED SSL 7SOIC |
| SSL3250AHN/C1,528 | IC LED DRVR PHOTO FLASH 16-HVQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SSL1750 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS control IC for LED drivers |
| SSL1750T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS control IC for LED drivers |
| SSL1750T/DB/120V,598 | 制造商:NXP Semiconductors 功能描述:- Boxed Product (Development Kits) 制造商:NXP 功能描述:NXP SSL1750T/DB/120V,598 Development Kits 制造商:NXP Semiconductors 功能描述:Demonstration Board for SSL1750 Series SMPS IC Led Driver 制造商:NXP Semiconductors 功能描述:75W 120V triac dimmable LED Drvr 制造商:NXP 功能描述:Demonstration Board for SSL1750 Series SMPS IC Led Driver |
| SSL1750T/DB/230V,598 | 制造商:NXP Semiconductors 功能描述:- Boxed Product (Development Kits) 制造商:NXP 功能描述:NXP SSL1750T/DB/230V,598 Development Kits 制造商:NXP Semiconductors 功能描述:75W 230V triac dimmable LED Drvr |
| SSL1750T/N1 | 制造商:NXP Semiconductors 功能描述:IC LED DRIVER AC INPUT 16SOIC |
发布紧急采购，3分钟左右您将得到回复。