參數(shù)資料
型號(hào)： TPS43000PWRG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, TSSOP-16
文件頁(yè)數(shù)： 6/31頁(yè)
文件大?。?/td> 615K
代理商： TPS43000PWRG4
TPS43000
SLUS489 OCTOBER 2001
14
www.ti.com
APPLICATION INFORMATION
error amplifier
The TPS43000 uses voltage mode control for each of the topologies. The output voltage is sensed and fed back
to the FB pin (inverting input) and compared to an internal 800 mV reference connected to the non-inverting
input. The difference (i.e. error voltage), is amplified by the internal error amplifier. The output of the error
amplifier (COMP), is then compared to the oscillator sawtooth ramp to control the pulse width used to drive the
power switch (energizing MOSFET). The duty cycle is varied to regulate the output voltage. The higher the error
voltage, the longer the energizing MOSFET switch is on.
The transient response of a converter is a function of both small signal and large signal responses. The small
signal response is determined by the error amplifier’s loop compensation (feedback network), whereas the large
signal response is a function of the error amplifier’s gain bandwidth and slew rate (dv/dt) as well as the slew
rate of the inductor current (di/dt). The TPS43000 internal error amplifier has a 5-MHz unity gain bandwidth. This
almost assures that the loop bandwidth is limited by external circuit characteristics rather than error amplifier
limitations. The internal error amplifier is capable of sourcing and sinking an ensured 500
A, which assures
that even during large signal transients, external components determine circuit behavior. Using low feedback
capacitance allows the error amplifier to rapidly slew from one level to another, insuring excellent transient
response.
loop compensation
The voltage loop needs to be compensated to provide control loop stability margin, and to minimize the output
voltage overshoot/undershoot response to line and load transients. A Type III error amplifier compensation
network can be used to optimize the loop response for any of the topologies and operating modes implemented
with the TPS43000. The Type III amplifier circuit is shown in Figure 2. This configuration has a pole at the origin
and two zero-pole pairs. It can provide up to 180
° of phase boost.
VOUT
C3
RBIAS
VREF
R3
R1
C1
R2
+
C2
Figure 2. Type III Error Amplifier Compensation
Network
0 dB
Av1
Av2
fz1
fz2
fp1
fp2
Gain
d
B
Figure 3. Type III Error Amplifier Compensation
Gain Response
t Time ns
相關(guān)PDF資料
PDF描述
TPS5102IDBT 3 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30
TPS5102IDBTG4 3 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO30
TPS51116PWPR 6 A SWITCHING CONTROLLER, PDSO20
TPS51116RGER 6 A SWITCHING CONTROLLER, PQCC24
TPS51116PWPRG4 6 A SWITCHING CONTROLLER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS43060 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low Quiescent Current Synchronous Boost DC-DC Controller with Wide VIN Range
TPS43060EVM-199 功能描述:電源管理IC開(kāi)發(fā)工具 TPS43060 EVAL MOD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS43060RTER 功能描述:DC/DC 開(kāi)關(guān)控制器 Sync Boost Cntlr Wide Input Vtg 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
TPS43060RTET 功能描述:DC/DC 開(kāi)關(guān)控制器 Sync Boost Cntlr Wide Input Vtg 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
TPS43061EVM-198 功能描述:電源管理IC開(kāi)發(fā)工具 TPS43061 EVAL MOD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*