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参数资料
| 型号： | SSL1523P/N2,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HIGH PWR AC IN 8-DIP |
| 标准包装： | 2,000 |
| 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： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 其它名称： | SSL1523P/N2112-CHP |
NXP Semiconductors
SSL152x
SMPS ICs for mains LED drivers
8.4 Valley switching
A new cycle is started when the primary switch is switched on (see Figure 4 ). After a
certain time (determined by the oscillator voltage RC 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 = primary self-inductance
C p = parasitic capacitance on drain node
As soon as the oscillator voltage becomes high again and after the secondary stroke has
ended, the circuit waits for a low drain voltage before starting a new primary stroke.
Figure 4 shows the drain voltage together with the valley signal, the signal indicating the
secondary stroke and the RC voltage.
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.
primary
stroke
secondary
stroke
secondary
ringing
drain
valley
secondary
stroke
A
RC
regulation level
B
oscillator
mgt423
A: Start of new cycle with valley switching.
B: Start of new cycle in a classical system.
Fig 4.
Signals for valley switching
SSL152X
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 17 September 2010
? NXP B.V. 2010. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SSL152X | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS ICs for mains LED drivers |
| SSL152X_09 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS ICs for mains LED drivers |
| SSL1623PH | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS ICs for mains LED drivers |
| SSL1623PH/N1 | 功能描述:LED照明驱动器 SSL DRIVER RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| SSL1623PH/N1,112 | 功能描述:LED照明驱动器 SSL DRIVER RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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