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| 型号： | SSL1522T/N2,518 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HI PWR AC IN 14-SOIC |
| 标准包装： | 1 |
| 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： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SO |
| 包装： | 标准包装 |
| 产品目录页面： | 845 (CN2011-ZH PDF) |
| 其它名称： | 568-4414-6 |
NXP Semiconductors
SSL152x
SMPS ICs for mains LED drivers
Figure 5 shows a typical curve for a reflected output voltage N × V o of 80 V. This voltage is
the output voltage V o (see Figure 6 ) transferred to the primary side of the transformer with
the factor N (determined by the turns ratio of the transformer). Figure 5 shows that the
system switches at the 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.
40
phase
(deg)
20
0
? 20
mgt424
? 40
0
200
400
600
800
f (kHz)
Fig 5.
Typical phase of drain ringing at switch-on (at N × V o = 80 V)
8.5 Demagnetization
The system operates in discontinuous conduction mode all the time. As long as the
secondary stroke has not ended, the oscillator will not start a new primary stroke. During
the first t sup(xfmr_ring) seconds, demagnetization recognition is suppressed. This
suppression may be necessary in applications where the transformer has a large leakage
inductance and at low output voltages.
8.6 Minimum and maximum duty factor
The minimum duty factor of the switched mode power supply is 0 %. The maximum duty
factor is set to 75 % (typical value at 100 kHz oscillation frequency).
8.7 OverCurrent Protection (OCP)
The cycle-by-cycle peak drain current limit circuit uses the external source resistor R I to
measure the current. The circuit is activated after the leading edge blanking time t leb . The
protection circuit limits the source voltage to V SOURCE(max) and thus limits the primary peak
current.
8.8 Short-circuit winding protection
The short-circuit winding protection circuit is also activated after the leading edge blanking
time. If the source voltage exceeds the short-circuit winding protection voltage V swp , the IC
stops switching. Only a power-on reset will restart normal operation. The short-circuit
winding protection also protects in case of a secondary diode short-circuit.
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 |
|---|---|
| SSL1523 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SSL1523 high power factor 5 W LED driver for universal |
| SSL1523AP/N2,112 | 功能描述:LED照明驱动器 SMPS 276V 1.9mA 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 |
| SSL1523DB/UNIVMAINS,598 | 制造商:NXP Semiconductors 功能描述:- Boxed Product (Development Kits) 制造商:NXP Semiconductors 功能描述:Univ. Mains hi PF 5W LED Drvr demo brd |
| SSL1523P | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:SMPS ICs for mains LED drivers |
| SSL1523P/N2 | 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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