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參數(shù)資料
| 型號(hào)： | L6910TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION |
| 中文描述： | 可調(diào)降壓控制器采用同步整流 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 453K |
| 代理商： | L6910TR |
L6910A L6910
16/21
5A Demo Board Description
The demo board shows the operation of the device in a general purpose application. The interanl reference is
used for the regulation. The external power mosfets are included in one SO8 package to save space and in-
crease power density.The 12V input rail supplies the device while the power conversion starts from the 5V input
rail. The device is also able to operate with a single supply voltage; in this case the jumper J1on the board bot-
tom has to be closed and a 5V to 12V input can be directly connected to the V
IN
input.
Figure 14. 5A Demo Board Schematic
Figure 15. PCB and Components Layouts
Efficiency
Figure 16 shows the measured efficiency versus load current for different values of output voltage. The measure
was done at 5V and 12V input for different values of the output voltage (2.5V, 3.3V and 5V only when Vin=12V).
Output voltage has been changed modifying the value of R1 in the demo board as reported in the part list.
L1
R7
C1,C2
C7
C3, C4
Q1/2
Q1/1
13
14
10
11
3
1
U1
L6910
VIN (+5V)
VOUT
PWRGD
6
12
5
4
2
15
7
9
VCC
GND
VREF
SS
OSC
OCSET
UGATE
PHASE
LGATE
PGND
PGOOD
VFB
COMP
C19
R1
C9
C6
D1
GNDIN
GNDOUT
R2
C8
C5
R6
C18
8
R5
R3
R4
C20
EAREF
BOOT
R9
R8
R10
D2
C10
R11
GNDCC
J1
VCC (+12V)
Component Side
Solder Side
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6911 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE POWER SUPPLY CONTROLLER FOR PENTIUM II PROCESSOR |
| L6911A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| L6911B | 制造商:STMicroelectronics 功能描述: |
| L6911C | 功能描述:DC/DC 開關(guān)控制器 5B PROGRAMMABLE 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 |
| L6911CTR | 功能描述:DC/DC 開關(guān)控制器 5B PROGRAMMABLE 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 |
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