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參數(shù)資料
| 型號： | M62216GP |
| 廠商： | Mitsubishi Electric Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Low Voltage Operation STEP-UP DC-DC Converter |
| 中文描述： | 低電壓工作升壓DC - DC轉換器 |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 72K |
| 代理商： | M62216GP |
MITSUBISHI SEMICONDUCTOR<STD-Linear IC>
M62216FP/GP
( / 8 )
Low Voltage Operation STEP-UP DC-DC Converter
Equation for Constants Calculation
Notice)
V
F
: Forward voltage of external diode.
V
CE(sat)
: Saturation voltage of external transistor.
V
BE
: Voltage between Base - Emitter of external transistor.
h
FE
: h
FE
of external transistor at saturating.
A
1
: Ratio of current into DRIVE1 terminal.
(A
1
= 0.8 ~ 0.9)
A
2
: Ratio of current into DRIVE2 terminal.
(A
2
= 1 - A
1
)
A
3
: Ratio of current into DRIVE2 terminal.
(A
3
= 0.1 ~ 0.2)
Set R2 to several K
~ several 10ths k
.
Set current into DRIVE2 terminal more than 100μA.
(Ipk / h
FE
) * A2
≥
100μA, (Ipk / h
FE
) * A3
≥
100μA,.
Set
Io to 1/ 5 ~ 1/ 3 of maximum load current.
The maximum rating of current of external parts (transistor,
diode and inductor) are 1.5 to 2 times of Ipk.
Application Circuit 1
V
O
+ V
F
- V
IN
Application Circuit 2
V
O
+ V
F
- V
IN
V
IN
- V
CE(sat)
1
V
O
+ V
F
- V
IN
V
IN
- V
CE(sat)
1
V
IN
- V
CE(sat)
1
fosc
T
ON
+ T
OFF
T
ON
T
OFF
fosc
fosc
1 +
T
ON
+ T
OFF
T
ON
T
OFF
1
1 +
T
ON
+ T
OFF
T
ON
T
OFF
1
1 +
- T
OFF(MIN)
fosc
1
- T
OFF(MIN)
fosc
- T
OFF(MIN)
fosc
2 * 1 + T
B
)
OFF
(V
IN
- V
CE(sat)
)
2
* T
ON(MAX)
2
* fosc
T
ON
2 * 1 + T
OFF
(V
IN
- V
CE(sat)
)
2
* T
ON(MAX)
2
* fosc
T
ON
2 * 1 + T
OFF
(V
IN
- V
CE(sat)
)
2
* T
ON(MAX)
2
* fosc
T
ON
2 * Vo * Io
2 * Vo * Io
2 * Vo * (Io + I
B
)
- 1 * R2
Vo
V
REF
- 1 * R2
Vo
V
REF
- 1 * R2
Vo
V
REF
V
IN
- (V
BE
+ V
sat1
)
(Ipk / h
FE
) * A1
Standard Application Circuit
T
ON
+T
OFF
Constants
T
ON
T
OFF(MIN)
T
ON(MAX)
Ipk
L
(MIN)
R1
R
D1
R
D2
T
OFF
V
o
- (V
BE
+ V
sat1
)
(Ipk / h
FE
) * A1
V
o
- (V
BE
+ V
sat1
)
(Ipk / h
FE
) * A1
V
o
- (V
BE
+ V
sat2
)
(Ipk / h
FE
) * A2
V
o
- (V
BE
+ V
sat2
)
(Ipk / h
FE
) * A2
V
IN
- (V
BE
+ V
sat2
)
(Ipk / h
FE
) * A2
STEP-DOWN Circuit
V
O
+ V
F
T
ON
+T
OFF
Constants
T
ON
T
OFF(MIN)
T
ON(MAX)
Ipk
L
(MIN)
R1
R
D1
R
D2
T
OFF
V
IN
- V
CE(sat) - Vo
1
fosc
T
ON
+ T
OFF
T
ON
T
OFF
1 +
- T
OFF(MIN)
fosc
1
2 * Io
Io
(V
IN
- V
CE(sat)
- Vo) * T
ON(MAX)
- 1 * R2
Vo
V
REF
V
o
- V
BE
- V
sat1
Ipk / h
FE
V
IN
- V
sat2
(Ipk / h
FE
) * A3
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相關代理商/技術參數(shù) |
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|---|---|
| M62220FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:3.3 V Fixed Output Voltage DC/DC Converter |
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