- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69061 > PM6681ATR (STMICROELECTRONICS) 0.4 A DUAL SWITCHING CONTROLLER, QCC32 PDF資料下載
參數(shù)資料
| 型號： | PM6681ATR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.4 A DUAL SWITCHING CONTROLLER, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件頁數(shù)： | 25/47頁 |
| 文件大?。?/td> | 2762K |
| 代理商： | PM6681ATR |
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頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當(dāng)前第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
PM6681A
Design guidelines
31/47
Equation 15
If hard saturation inductors are used, the inductor saturation current should be much greater
than the maximum inductor peak current Ipeak:
Equation 16
Using soft saturation inductors it's possible to choose inductors with saturation current limit
nearly to Ipeak. Below there is a list of some inductor manufacturers.
9.3
Output capacitor
The selection of the output capacitor is based on the ESR value Rout and the voltage rating
rather than on the capacitor value Cout.
The output capacitor has to satisfy the output voltage ripple requirements. Lower inductor
value can reduce the size of the choke but increases the inductor current ripple
I
L.
Since the voltage ripple VRIPPLEout is given by:
Equation 17
A low ESR capacitor is required to reduce the output voltage ripple. Switching sections can
work correctly even with 20 mV output ripple.
However, to reduce jitter noise between the two switching sections it's preferable to work
with an output voltage ripple greater than 30 mV. If lower output ripple is required, a further
compensation network is needed (see Closing the integrator loop paragraph).
Finally the output capacitor choice deeply impacts on the load transient response (see Load
transient response paragraph). Below there is a list of some capacitor manufacturers.
Table 11.
Inductor manufacturer
Manufacturer
Series
Inductor value
(uH)
RMS current
(A)
Saturation current
(A)
Coilcraft
SER1360
1 to 8
6 to 9.5
7 to 31
Coilcraft
MLC
0.7 to 4.5
13.6 to 17.3
11.5 to 26
TDK
RLF12560
1 to 10
7.5 to 14.4
7.5 to 18.5
`
V
L
f
V
I
max
IN
OUT
sw
OUT
max
IN
(max)
L
×
=
2
(max)
I
(max)
I
L
LOAD
peak
+
=
L
out
RIPPLEout
I
R
V
×
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PMA4118HSF/C | 1-OUTPUT 18 W DC-DC REG PWR SUPPLY MODULE |
| PMA4118LSF/B | 1-OUTPUT 14.4 W DC-DC REG PWR SUPPLY MODULE |
| PMA4218GSF/B | 1-OUTPUT 21.6 W DC-DC REG PWR SUPPLY MODULE |
| PMA4118LSF/C | 1-OUTPUT 14.4 W DC-DC REG PWR SUPPLY MODULE |
| PMA4118HSF/B | 1-OUTPUT 18 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| PM6685_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual step-down main supply controller with auxilary voltages for notebook system power |
| PM6685TR | 功能描述:DC/DC 開關(guān)控制器 Monolithic VR 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 |
| PM6686 | 制造商:STMicroelectronics 功能描述: |
| PM6686TR | 功能描述:DC/DC 開關(guān)控制器 Step-down Controller w/adj. voltages-dual 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)。