- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98055 > PM6680ATR (STMICROELECTRONICS) 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 PDF資料下載
參數(shù)資料
| 型號： | PM6680ATR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, VFQFPN-32 |
| 文件頁數(shù)： | 17/48頁 |
| 文件大?。?/td> | 1932K |
| 代理商： | PM6680ATR |
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頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當前第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頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
Device description
PM6680A
24/48
7.6
Current limit
The current-limit circuit employs a "valley" current-sensing algorithm. During the conduction
time of the low side MOSFET the current flowing through it is sensed. The current-sensing
element is the low side MOSFET on-resistance (Figure 33).
An internal 100 A current source is connected to CSENSE pin and determines a voltage
drop on RCSENSE. If the voltage across the sensing element is greater than this voltage
drop, the controller doesn't initiate a new cycle. A new cycle starts only when the sensed
current goes below the current limit.
Since the current limit circuit is a valley current limit, the actual peak current limit is greater
than the current limit threshold by an amount equal to the inductor ripple current.
Moreover the maximum DC load is equal to the valley current limit plus half of the inductor
ripple current:
Equation 6
The output current limit depends on the current ripple, as shown in Figure 34:
Figure 34.
Current waveforms in current limit conditions
Figure 33.
Rsense sensing technique
LGATE
HGATE
CSENSE
PHASE
Rcsense
RDSon
HS
LS
2
I
(max)
I
L
Lvalley
LOAD
+
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PM6680A | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6680TR | 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6685TR | DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6686 | SWITCHING CONTROLLER, QCC32 |
| PM75B6L1C060 | AC MOTOR CONTROLLER, DMA19 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6680TR | 功能描述:DC/DC 開關(guān)控制器 No Rsense dual StepDwn 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 |
| PM6681A | 功能描述:DC/DC 開關(guān)控制器 Dual Synch CTRLR Adj Voltage LDO 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 |
| PM6681A_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual synchronous step-down controller with adjustable LDO |
| PM6681ATR | 功能描述:DC/DC 開關(guān)控制器 DUAL STEP-DOWN CONTROLLER W/ADJ LDO 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 |
| PM6685 | 功能描述:DC/DC 開關(guān)控制器 Dual 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。