參數(shù)資料
型號： PM6670
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 1.4 A SWITCHING CONTROLLER, QCC24
封裝： 4 X 4 MM, LEAD FREE, VFQFN-24
文件頁數(shù)： 40/53頁
文件大?。?/td> 799K
代理商： PM6670
Obsolete
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Product(s)
PM6670
Application information
45/53
Tested low-side MOSFETs are listed in Table 16.
Dual N-MOS can be used in applications with lower output current.
shows some suitable dual MOSFETs for applications requiring about 3A.
8.1.5
Diode selection
A rectifier across the synchronous switch 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.
Moreover it increases the efficiency of the system.
Choose a schottky diode as long as its forward voltage drop is very little (0.3V). The reverse
voltage should be greater than the maximum input voltage VINmax and a minimum recovery
reverse charge is preferable. Table 19 shows some evaluated diodes.
Table 17. Evaluated low-side MOSFETs
Manufacturer
Type
RDSon (m)
CGD \ CGS
Rated reverse voltage (V)
ST
STS12NH3LL
13.5
0.069
30
ST
STS25NH3LL
40
0.011
30
IR
IRF7811
24
0.054
30
Table 18. Suitable dual MOSFETs
Manufacturer
Type
RDSon (m)
Gate Charge (nC)
Rated reverse voltage (V)
ST
STS8DNH3LL
25
10
30
IR
IRF7313
46
33
30
Table 19. Evaluated recirculation rectifiers
Manufacturer
Type
Forward
voltage (V)
Rated reverse
voltage (V)
Reverse current (
A)
ST
STPS1L30M
0.34
30
0.00039
ST
STPS1L30A
0.34
30
0.00039
相關(guān)PDF資料
PDF描述
PM6675ASTR 3 A SWITCHING CONTROLLER, QCC24
PM6675AS 3 A SWITCHING CONTROLLER, QCC24
PM6675ATR SWITCHING CONTROLLER, QCC24
PM6675TR SWITCHING CONTROLLER, QCC24
PM6675 SWITCHING CONTROLLER, QCC24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6670AS 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl 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
PM6670ASTR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
PM6670ATR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
PM6670S 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl 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
PM6670STR 功能描述:DC/DC 開關(guān)控制器 Complete DDR2/3 Mem Pwr supply controllr 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
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