- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384586 > L6730 (意法半導(dǎo)體) Adjustable step-down controller with synchronous rectification PDF資料下載
參數(shù)資料
| 型號： | L6730 |
| 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)式降壓同步整流控制器 |
| 文件頁數(shù)： | 33/52頁 |
| 文件大小： | 1370K |
| 代理商： | L6730 |
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頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁當(dāng)前第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頁第48頁第49頁第50頁第51頁第52頁
L6730 - L6730B
Application details
33/52
6
Application details
6.1
Inductor design
The inductance value is defined by a compromise between the transient response time, the
efficiency, the cost and the size. The inductor has to be calculated to maintain the ripple current
(
I
L
) between 20% and 30% of the maximum output current. The inductance value can be
calculated with the following relationship:
Where F
SW
is the switching frequency, V
IN
is the input voltage and V
OUT
is the output voltage.
Figure 27.
shows the ripple current vs. the output voltage for different values of the inductor,
with V
IN
= 5V and V
IN
= 12V at a switching frequency of 400kHz.
Increasing the value of the inductance reduces the current ripple but, at the same time,
increases the converter response time to a load transient. If the compensation network is well
designed, during a load transient the device is able to set the duty cycle to 100% or to 0%.
When one of these conditions is reached, the response time is limited by the time required to
change the inductor current. During this time the output current is supplied by the output
capacitors. Minimizing the response time can minimize the output capacitor size.
Figure 27. Inductor current ripple.
Vin
Vout
I
Fsw
Vout
Vin
L
L
(6)
0
1
2
3
4
5
6
7
8
0
1
2
3
4
OUTPUT VOLTAGE (V)
I
V in = 5 V , L = 5 0 0 n H
V in = 5 V , L = 1 .5 u H
V in = 1 2 V , L = 2 u H
V in = 1 2 V , L = 1 u H
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6730B | Adjustable step-down controller with synchronous rectification |
| L6730BTR | Adjustable step-down controller with synchronous rectification |
| L6730TR | Adjustable step-down controller with synchronous rectification |
| L6740L | Hybrid controller (4+1) for AMD SVID and PVID processors |
| L6740LTR | Hybrid controller (4+1) for AMD SVID and PVID processors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6730_09 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification |
| L6730B | 功能描述:DC/DC 開關(guān)控制器 Adjustable 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 |
| L6730BTR | 功能描述:DC/DC 開關(guān)控制器 Adjustable 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 |
| L6730C | 功能描述:IC REG CTRLR BUCK PWM VM 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁面:1316 (CN2011-ZH PDF) |
| L6730CQ | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。