參數(shù)資料
型號(hào)： L6730
廠商： 意法半導(dǎo)體
英文描述： Adjustable step-down controller with synchronous rectification
中文描述： 可調(diào)式降壓同步整流控制器
文件頁(yè)數(shù)： 32/52頁(yè)
文件大?。?/td> 1370K
代理商： L6730
Device description
L6730 - L6730B
32/52
5.14.2 No-Sink at zero current operation
The L6730 can work in no-sink mode. If output current is zero the converter skip some pulses
and works with a lower switching frequency. Between two pulses can pass a relatively long time
(say 200-300μs) during which there’s no switching activity and the current into the inductor is
zero. In this condition the phase node is at the output voltage and in some cases this is not
enough to keep the bootstrap cap charged. For example, if Vout is 3.3V the voltage across the
bootstrap cap is only 1.7V. The high-side MOSFET cannot be effectively turned-on and the
regulation can be lost. Thanks to the “bootstrap anti-discharging system” the bootstrap cap is
always kept charged. The following picture shows the behaviour of the device in the following
conditions: 12V
3.3V@0A.
It can be observed that between two pulses trains the low-side is turned-on in order to keep the
bootstrap cap charged.
Figure 26. 12V -> 3.3V@0A in no-sink
Pulse train
Minimum Bootstrap Voltage
V
PHASE
V
BOOT
I
L
相關(guān)PDF資料
PDF描述
L6730B Adjustable step-down controller with synchronous rectification
L6730BTR Adjustable step-down controller with synchronous rectification
L6730TR Adjustable step-down controller with synchronous rectification
L6740L Hybrid controller (4+1) for AMD SVID and PVID processors
L6740LTR Hybrid controller (4+1) for AMD SVID and PVID processors
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6730_09 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification
L6730B 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
L6730BTR 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
L6730C 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無(wú) 升壓:無(wú) 回掃:是 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁(yè)面:1316 (CN2011-ZH PDF)
L6730CQ 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification
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

*
*
*