- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383238 > L6919CDTR (意法半導(dǎo)體) CAP 20PF 50V 5% C0G SMD-0805 TR-7-PL SN100 PDF資料下載
參數(shù)資料
| 型號： | L6919CDTR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | CAP 20PF 50V 5% C0G SMD-0805 TR-7-PL SN100 |
| 中文描述： | 5位可編程雙相與動態(tài)VID管理控制器 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大小： | 558K |
| 代理商： | L6919CDTR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
L6919C
10/32
Figure 3. Soft Start
Figure 4. Drivers peak current: High Side (left) and Low Side (right)
DRIVER SECTION
The integrated high-current drivers allow using different types of power MOS (also multiple MOS to reduce the
R
dsON
), maintaining fast switching transition.
The drivers for the high-side mosfets use BOOTx pins for supply and PHASEx pins for return. The drivers for
the low-side mosfets use VCCDRV pin for supply and PGND pin for return. A minimum voltage of 4.6V at VC-
CDRV pin is required to start operations of the device.
The controller embodies a sophisticated anti-shoot-through system to minimize low side body diode conduction
time maintaining good efficiency saving the use of Schottky diodes. The dead time is reduced to few nanosec-
onds assuring that high-side and low-side mosfets are never switched on simultaneously: when the high-side
mosfet turns off, the voltage on its source begins to fall; when the voltage reaches 2V, the low-side mosfet gate
drive is applied with 30ns delay. When the low-side mosfet turns off, the voltage at LGATEx pin is sensed. When
it drops below 1V, the high-side mosfet gate drive is applied with a delay of 30ns. If the current flowing in the
inductor is negative, the source of high-side mosfet will never drop. To allow the turning on of the low-side mos-
fet even in this case, a watchdog controller is enabled: if the source of the high-side mosfet don't drop for more
than 240ns, the low side mosfet is switched on so allowing the negative current of the inductor to recirculate.
This mechanism allows the system to regulate even if the current is negative.
V
IN
=V
CCDR
V
LGATEx
PGOOD
V
OUT
t
t
t
t
2V
Turn ON threshold
2048 Clock Cycles
Timing Diagram
Acquisition:
CH1 = PGOOD; CH2 = V
OUT
; CH4 = LGATEx
CH3 = HGATE1; CH4 = HGATE2
CH3 = LGATE1; CH4 = LGATE2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6920DB | Synchronous rectifier step up converter |
| L6920DBTR | Synchronous rectifier step up converter |
| L6920DTR | 1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
| L6920D | 1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
| L6920 | 1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6919E | 功能描述:DC/DC 開關(guān)控制器 5-Bit Dual Ph Contlr 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 |
| L6919ETR | 功能描述:DC/DC 開關(guān)控制器 5-Bit Dual Ph Contlr 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 |
| L-692 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:Common Mode Inductor |
| L6920 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
| L6920D | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 0.6 to 5.5V Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。