參數(shù)資料
型號(hào)： PM6686
廠商： STMICROELECTRONICS
元件分類： 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
文件頁數(shù)： 37/50頁
文件大?。?/td> 1066K
代理商： PM6686
Diode selection
PM6686
42/50
Doc ID 15281 Rev 4
11
Diode selection
11.1
Freewheeling diode
A rectifier across the low-side MOSFET is recommended. The rectifier works as a voltage
clamp across the synchronous rectifier and reduces the negative inductor swing during the
dead time between turning the high-side MOSFET off and the synchronous rectifier on. It
can increase the efficiency of the switching section, since it reduces the low-side switch
losses. A Schottky diode is suitable for its low forward voltage drop (0.3 V). The diode
reverse voltage must be greater than the maximum input voltage. A minimum recovery
reverse charge is preferable. Below there is a list of some Schottky diode manufacturers.
11.2
Charge pump diode
The charge pump capacitors are fed by the current supplied by LGATE1 (output of the low-
side driver for the section 1). Dual in package diodes, in series configuration, could be used
to reduce the area occupation.
Table 20.
Schottky diode manufacturer
Manufacturer
Series
Forward voltage
(V)
Rated reverse
voltage (V)
Reverse current
(
μA)
ST
STPS1L30M
0.34
30
0.00039
ST
STPS1L20M
0.37
20
0.000075
Table 21.
Schottky diode manufacturer
Manufacturer
Series
Forward voltage
(V)
Rated reverse
voltage (V)
Max forward
current (A)
ST
BAT54S
0.24
40
0.3
ST
BAR43A
0.35
30
0.1
ST
BAS69-04
0.35
15
0.01
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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
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 端接類型:Crimp
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