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| 型号： | L6599ADTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO16 |
| 封装： | ROHS COMPLIANT, SOP-16 |
| 文件页数： | 22/36页 |
| 文件大小： | 1595K |
| 代理商： | L6599ADTR |
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L6599A
Application information
Doc ID 15308 Rev 5
29/36
Figure 30.
Line sensing function: internal block diagram and timing diagram
With reference to Figure 28, the following relationships can be established for the ON
(VinON) and OFF (VinOFF) thresholds of the input voltage:
Equation 11
which, solved for RH and RL, yield:
Equation 12
While the line undervoltage is active the start-up generator keeps on working but there is no
PWM activity, thus the Vcc voltage (if not supplied by another source) continuously
oscillates between the start-up and the UVLO thresholds, as shown in the timing diagram of
.
As an additional measure of safety (e.g. in case the low-side resistor is open or missing, or
in non-power factor corrected systems in case of abnormally high input voltage) if the
voltage on the pin exceeds 7 V the L6599A is shutdown. If its supply voltage is always above
the UVLO threshold, the IC will restart as the voltage falls below 7 V.
The LINE pin, while the device is operating, is a high impedance input connected to high
value resistors, thus it is prone to pick up noise, which might alter the OFF threshold or give
origin to undesired switch-off of the IC during ESD tests. It is possible to bypass the pin to
ground with a small film capacitor (e.g. 1-10 nF) to prevent any malfunctioning of this kind. If
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1
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13
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相关代理商/技术参数 |
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| L6599AFD | 功能描述:Power Supply Controller Resonant Converter Controller 16-SO 制造商:stmicroelectronics 系列:- 包装:管件 零件状态:有效 应用:谐振转换器控制器 电压 - 输入:- 电压 - 电源:8.85 V ~ 16 V 电流 - 电源:3.5mA 工作温度:-50°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商器件封装:16-SO 标准包装:50 |
| L6599AN | 功能描述:电压模式 PWM 控制器 Hi-Volt resonant controller, 500KHz RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| L6599ATD | 功能描述:电压模式 PWM 控制器 Sgl Output 13.3 V 200 KHz SOIC-16 Nrw RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| L6599ATDTR | 功能描述:开关变换器、稳压器与控制器 IMPROVED High-Volt RESONANT CONTROLLER RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6599ATN | 制造商:STMicroelectronics 功能描述: |
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