- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384864 > R1224N502M (Ricoh Co., Ltd.) PWM/VFM step-down DC/DC Converter PDF資料下載
參數(shù)資料
| 型號： | R1224N502M |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | PWM/VFM step-down DC/DC Converter |
| 中文描述： | 脈寬調(diào)制/ VFM的降壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 11/42頁 |
| 文件大?。?/td> | 876K |
| 代理商： | R1224N502M |
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頁當(dāng)前第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
R1224N
In the continuous mode, when Equation 1 is solved for ton and assumed that the solution is tonc,
tonc
=
T
×
V
OUT
/V
IN
.....................................................................................Equation 2
When ton<tonc, the mode is the discontinuous mode, and when ton
=
tonc, the mode is the continuous mode.
OUTPUT CURRENT AND SELECTION OF EXTERNAL COMPONENTS
When Lx Tr. is ON:
(Wherein, Ripple Current P-P value is described as I
RP
, ON resistance of Lx Tr. is described as Rp the direct
current of the inductor is described as R
L
.)
V
IN
=
V
OUT
+
(Rp
+
RL)
×
I
OUT
+
L
×
I
RP
/ton .................................................Equation 3
When Lx Tr. is OFF:
L
×
I
RP
/toff
=
V
F
+
V
OUT
+
R
L
×
I
OUT
............................................................ Equation 4
Put Equation 4 to Equation 3 and solve for ON duty, ton/(toff+ton)
=
D
ON
,
D
ON
=
(V
OUT
+
V
F
+
R
L
×
I
OUT
)/(V
IN
+
V
F
Rp
×
I
OUT
)......................................Equation 5
Ripple Current is as follows;
I
RP
=
(V
IN
V
OUT
Rp
×
I
OUT
R
L
×
I
OUT
)
×
D
ON
/f/L........................................Equation 6
Wherein, peak current that flows through L, Lx Tr., and SD is as follows;
ILmax
=
I
OUT
+
I
RP
/2............................................................................ Equation 7
Consider ILmax, condition of input and output and select external components.
ì
The above explanation is directed to the calculation in an ideal case in continuous mode.
11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R1224N552E | PWM/VFM step-down DC/DC Converter |
| R1224N552F | PWM/VFM step-down DC/DC Converter |
| R1224N552G | PWM/VFM step-down DC/DC Converter |
| R1224N552H | PWM/VFM step-down DC/DC Converter |
| R1224N552L | PWM/VFM step-down DC/DC Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R122BA19.38.62 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導(dǎo)線 >> 多芯導(dǎo)線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
| R122BA19.40.62 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導(dǎo)線 >> 多芯導(dǎo)線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
| R122BA19.41.01 | 功能描述:2C/12 19/.0185BC UNSH CL3R RoHS:是 類別:線纜，導(dǎo)線 >> 多芯導(dǎo)線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
| R122BA19.41.06 | 功能描述:12 AWG 2C 19/25 BC .009" PVC RoHS:是 類別:線纜，導(dǎo)線 >> 多芯導(dǎo)線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
| R122BA19.41.62 | 功能描述:2C/12 19/.0185BC UNSH CL3R RoHS:是 類別:線纜，導(dǎo)線 >> 多芯導(dǎo)線 系列:* 標(biāo)準(zhǔn)包裝:1 系列:* |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。