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參數(shù)資料
| 型號： | L6730TR |
| 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 |
| 文件頁數(shù)： | 26/52頁 |
| 文件大小： | 1370K |
| 代理商： | L6730TR |
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Device description
L6730 - L6730B
26/52
If the current is higher than the valley OCP threshold during the off-time, the high-side
MOSFET(s) will not be turned ON. In this way the maximum current can be limited (
Figure 21.
).
During the constant-current-protection if the Vout becomes lower than 80% of the programmed
value an UV (under-voltage) is detected and the device enters in HICCUP mode. The under-
voltage-lock-out (UVLO) is adjustable by the multifunction pin (see
Chapter 5.10 on page 27
).
It’s possible to set two different thresholds:
4.2V for 5V Bus
8.6V for 12V Bus
●
●
Working with a 12V BUS, setting the UVLO at 8.6V can be very helpful to limit the input current
in case of BUS fall.
5.9
Adjustable masking time
By connecting the masking time pin to V
CCDR
or GND it is possible to select two different values
for the peak current protection leading edge blanking time. This is useful to avoid any false OCP
trigger due to spikes and oscillations generated at the turn-on of the high-side MOSFET(s). The
amount of this noise depends very much on the layout, MOSFETs, free-wheeling diode,
switched current, and input voltage.
When good layout and medium current are used, the minimum masking time can be chosen,
while in case of higher noise, it is better to select the maximum masking time. By connecting
the t
MASK
pin to V
CCDR
the masking time is about 400ns, while connecting it to GND results in
about 260ns masking time.
Figure 21. Valley OCP (L6730B).
V
OUT
I
L
T
OFF
T
OFF
Valley th
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6731B | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Adj. Step-Down w/ Synch Rectification 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 |
| L6731BTR | 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| L6731D | 功能描述:DC/DC 開關(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 |
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