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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： | 19/36页 |
| 文件大小： | 1595K |
| 代理商： | L6599ADTR |
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Application information
L6599A
26/36
Doc ID 15308 Rev 5
series to CA is small (not above some hundred Ω, just to limit current spiking) the circuit
operates like a capacitive current divider; CA will be typically selected equal to Cr/100 or
less and will be a low-loss type, the sense resistor RB will be selected as:
Equation 7
and CB will be such that RBCB is in the range of 10 /fmin.
If the resistor RA in series to CA is not small (in this case it will be typically selected in the ten
k
Ω), the circuit operates like a divider of the ripple voltage across the resonant capacitor Cr,
which, in turn, is related to its current through the reactance of Cr. Again, CA will be typically
selected equal to Cr/100 or less, this time not necessarily a low-loss type, while RB
(provided it is << RA) according to:
Equation 8
where the reactance of CA (XCA) and Cr (XCr) should be calculated at the frequency where
ICrpk = ICrpkx. Again, CB will be such that RBCB is in the range of 10 /fmin.
Whichever circuit one is going to use, the calculated values of Rs or RB should be
considered just a first cut value that needs to be adjusted after experimental verification.
OCP is effective in limiting primary-to-secondary energy flow in case of an overload or an
output short circuit, but the output current through the secondary winding and rectifiers
under these conditions might be so high to endanger converter’s safety if continuously
flowing. To prevent any damage during these conditions it is customary to force converter’s
intermittent operation, in order to bring the average output current to values such that the
thermal stress for the transformer and the rectifiers can be easily handled.
With the L6599A the designer can program externally the maximum time TSH that the
converter is allowed to run overloaded or under short circuit conditions. Overloads or short
circuits lasting less than TSH will not cause any other action, hence providing the system
with immunity to short duration phenomena. If, instead, TSH is exceeded an overload
protection (OLP) procedure is activated that shuts down the L6599A and, in case of
continuous overload/short circuit, results in continuous intermittent operation with a user-
defined duty cycle.
+
π
=
A
r
Crpkx
B
C
1
I
8
.
0
R
Cr
2
C
2
A
Crpkx
B
X
R
I
8
.
0
R
A
+
π
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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