參數(shù)資料
型號(hào)： L6731BTR
廠(chǎng)商： 意法半導(dǎo)體
英文描述： Transistor; Type: Amplifiers/Bipolar; VCEO (V): -25; Ic (A): -1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: -0.5; Package: TO-92Mod
中文描述： 可調(diào)式降壓同步整流專(zhuān)用的DDR控制器內(nèi)存
文件頁(yè)數(shù)： 19/24頁(yè)
文件大小： 311K
代理商： L6731BTR
L6731B
Application details
19/24
6.3
Input capacitors
The input capacitors have to sustain the RMS current flowing through them, that is:
Where D is the duty cycle. The equation reaches its maximum value, I
OUT
/2 with D = 0.5. The
losses in worst case are:
6.4
Compensation network
The loop is based on a voltage mode control (
Figure 18.
). The output voltage is regulated to the
internal/external reference voltage and scaled by the external resistor divider. The error
amplifier output V
COMP
is then compared with the oscillator triangular wave to provide a pulse-
width modulated (PWM) with an amplitude of V
IN
at the PHASE node. This waveform is filtered
by the output filter. The modulator transfer function is the small signal transfer function of V
OUT
/
V
COMP
. This function has a double pole at frequency F
LC
depending on the L-C
OUT
resonance
and a zero at FESR depending on the output capacitor's ESR. The DC Gain of the modulator is
simply the input voltage V
IN
divided by the peak-to-peak oscillator voltage: V
OSC
.
Figure 11. Compensation Network
)
1
D
D
Iout
Irms
=
2
)
5
Iout
ESR
P
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6731D 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6731DTR 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6732 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6732_08 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification
L6732_0906 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification
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