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参数资料
| 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： | 20/36页 |
| 文件大小： | 1595K |
| 代理商： | L6599ADTR |
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L6599A
Application information
Doc ID 15308 Rev 5
27/36
Figure 29.
Soft-start and delayed shutdown upon overcurrent timing diagram
This function is realized with pin 2 (DELAY), by means of a capacitor CDelay and a parallel
resistor RDelay connected to ground. As the voltage on the ISEN pin exceeds 0.8 V the first
OCP comparator, in addition to discharging CSS, turns on an internal current generator that
sources 150 A from the DELAY pin and charges CDelay. During an overload/short-circuit
the OCP comparator and the internal current source will be repeatedly activated and CDelay
will be charged with an average current that depends essentially on the time constant of the
current sense filtering circuit, on CSS and the characteristics of the resonant circuit; the
discharge due to RDelay can be neglected, considering that the associated time constant is
typically much longer.
This operation will go on until the voltage on CDelay reaches 2 V, which defines the time TSH.
There is not a simple relationship that links TSH to CDelay, thus it is more practical to
determine CDelay experimentally. As a rough indication, with CDelay = 1 F TSH will be in the
order of 100 ms.
Once CDelay is charged at 2 V the internal switch that discharges CSS is forced low
continuously regardless of the OCP comparator’s output, and the 150 A current source is
continuously on, until the voltage on CDelay reaches 3.5 V. This phase lasts:
Equation 9
with TMP is expressed in ms and CDelay in F. During this time the L6599A runs at a
resonant circuit. As the voltage on CDelay is 3.5V, the L6599A stops switching and the
PFC_STOP pin is pulled low. Also the internal generator is turned off, so that CDelay will now
be slowly discharged by RDelay. The IC will restart when the voltage on CDelay will be less
than 0.3 V, which will take:
Equation 10
Delay
MP
C
10
T
=
Delay
3
.
0
5
.
3
Delay
STOP
C
R
5
.
2
ln
C
R
T
≈
=
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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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