參數(shù)資料
型號(hào)： PM6686
廠商： STMICROELECTRONICS
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, QCC32
封裝： 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32
文件頁(yè)數(shù)： 36/50頁(yè)
文件大?。?/td> 1066K
代理商： PM6686
PM6686
Application information
Doc ID 15281 Rev 4
41/50
The power dissipation of the low-side MOSFET is given by:
Equation 17
Maximum conduction losses occur at the maximum input voltage:
Equation 18
Choose a synchronous rectifier with low RDS(on). When high-side MOSFET turns on, the
fast variation of the phase node voltage can bring up even the low-side gate through its
gate-drain capacitance CRSS, causing cross-conduction problems. Choose a low-side
MOSFETs that minimizes the ratio CRSS/CGS (CGS = CISS - CRSS).
Below there is a list of some possible low-side MOSFETs.
Dual N-channel MOSFETs can be used in applications with a maximum output current of
about 3 A. Below there is a list of some MOSFETs manufacturers.
Table 17.
High-side MOSFET manufacturer
Manufacturer
Type
Gate charge (nC)
RDS(on) (mΩ) Rated reverse voltage (V)
ST
STS12NH3LL
10
8
30
ST
STS17NH3LL
18
4
30
Table 18.
Low-side MOSFET manufacturer
Manufacturer
Type
RDS(on) (mΩ)
Rated reverse voltage
(V)
ST
STS17NF3LL
5.5
0.047
30
ST
STS25NH3LL
3.5
0.011
30
Table 19.
Dual MOSFET manufacturer
Manufacturer
Type
RDS(on) (mΩ)
Gate charge
(nC)
Rated reverse voltage
(V)
ST
STS8DNH3LL
25
10
30
ST
STS4DNF60L
65
32
60
conduction
DLowSide
P
=
2
LOAD
max
IN
OUT
DSon
conduction
(max)
I
V
1
R
P
×
×
=
GS
RSS
C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6686TR 功能描述:DC/DC 開(kāi)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(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
PM6-6F-L 功能描述:端子 Metric Fork Terminal non-insulated, 4.0 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類(lèi)型:Crimp
PM6-6R-D 制造商:Panduit Corp 功能描述:
PM6-6R-L 功能描述:端子 Metric Ring Terminal non-insulated, 2.5 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類(lèi)型:Crimp
PM6-6R-X 功能描述:端子 Metric Ring Terminal non-insulated, 2.5 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類(lèi)型:Crimp
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