參數(shù)資料
型號(hào)： tDa 4601
廠商： SIEMENS AG
英文描述： Control ICs for Switched-Mode Power Supplies(應(yīng)用于開關(guān)電源的控制類芯片)
中文描述： 控制芯片的開關(guān)電源（應(yīng)用于開關(guān)電源的控制類芯片）
文件頁(yè)數(shù)： 19/26頁(yè)
文件大?。?/td> 1384K
代理商： TDA 4601
Semiconductor Group
25
TDA 4601
Notes on Application Circuit 4
Improved Load Control and Short-Circuit Characteristics
Turn-on is the same as for circuit 3.
To make the price more attractive, switching transistor BU 508 A was selected.
To ensure optimum standby conditions, the capacitance between pins 2 and 3 was increased to
100 pF.
Z- diode
C
6.2
transfers control voltage
V
cont
directly to pin 3 resulting in improved load control.
Design and coupling conditions of various flyback transformers were sometimes a reason for
overshoot spectra, which, despite the RC-attenuating element 33
x 22 nF and the 10-k
resistor,
even penetrated across the feedback winding 9/15 to the zero passage indicator input (pin 2) and
activated double and multiple pulses in the IC. Double and multiple pulses, however, lead to
magnetic saturation in the flyback transformer and thus increase the risk of damaging the switched-
mode power supply.
The larger the quantities of power to be passed, the more easily overshoots are generated. This
can be observed around the point of return. The switched-mode power supply, however, reduces
its own power to a minimum in all cases of overload or short-circuit. A series resonant circuit, whose
resonance corresponds to the transformer’s selfoscillation, was created by combination of the
4.7-
μ
H inductance and the 22-nF capacitance. This resonant circuit short-circuits overshoots via a
33-
resistor.
f
2
π
LC
-----------------
500 kHz
≈
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA4601-D 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Control ICs for Switched-Mode Power Supplies
TDA4605 功能描述:視頻 IC SMPS Controller RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TDA4605_03 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS
TDA46052 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TDA4605-2 功能描述:軟開關(guān) PWM 控制器 CTRL IC FOR SWITCH MODE PWR SUPPLIES RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
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