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參數資料
| 型號： | XC9106D |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| 中文描述： | PWM控制，PWM / PFM切換控制，升壓DC / DC轉換器 |
| 文件頁數： | 7/8頁 |
| 文件大?。?/td> | 109K |
| 代理商： | XC9106D |
Preliminary
"
FUNCTIONAL SETTINGS
< Output Voltage Setting>
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of RFB1
and RFB2. The sum of RFB1 and RFB2 should normally be 2 M
or less. The range of reference voltage of the series can be varied externally
from 0.8V to 2.5V.
VOUT = Vref applied voltage x (RFB1 + RFB2) / RFB2
fzfb = 30kHz (L=10
μ
H)
RFB1 : 270k
RFB2 : 30k
fzfb = 20kHz (L=22
μ
H)
CFB :
20pF
(fzfb = 30kHz, L = 10
μ
H)
fzfb = 10kHz (L=47
μ
H)
27pF
(fzfb = 20kHz, L = 22
μ
H)
56pF
(fzfb = 10kHz, L = 47
μ
H)
< The use of ceramic capacitor CL >
The circuit of the XC9106/9107 series is organized by a specialized circuit which reenacts negative feedback of both voltage and current. Also by
insertion of approximately 100m
of a low and inexpensive sense resistor as current sense, a high degree of stability is possible even using a
ceramic capacitor, a condition which used to be difficult to achieve. Compared to a tantalum condenser, because the series can be operated in a
very small capacity, it is suited to use of the ceramic capacitor which is cheap and small.
"
RECOMMENDED COMPONENTS
Tr:
*When a MOSFET is used :
2SK2159 (NEC N-Channel Power MOSFET)
Note* : With direct voltages over 4.5V, use the
XP161A11A1PR.
*When a NPN Tr. Is used :
2SD1628 (Sanyo)
Rb
: 500
(adjust with Tr's HFE or load)
Cb
: 2200pF (ceramic type)
Cb
≤
1 / (2
π
×
Rb
×
FOSC
×
0.7)
SD:
L, CL :
MA2Q737 (Schottky Diode type, MATSUSHITA)
Adjust as below according to the condition and peripheral components
When Ceramic capacitor is used :
L :
22
μ
H (SUMIDA CDRH5D28, FOSC = 100kHz)
10
μ
H (SUMIDA CDRH5D18, FOSC = 300kHz)
CL :
10V 10
μ
F (Ceramic capacitor, LMK325BJ106ML, TAIYOYUDEN)
Use the formula below when step-up ratio and output current is large.
CL = (CL standard value)
×
(IOUT(mA) / 300mA
×
VOUT / VIN)
RSENSE :
100m
(FOSC = 300kHz)
50m
(FOSC = 100kHz)
When Tantalum capacitor is used :
L:
22
μ
H (SUMIDA CDRH5D28, FOSC = 300kHz)
47
μ
H (SUMIDA CDRH5D28, FOSC = 100kHz)
Except when IOUT(mA) / 100mA
×
VOUT / VIN > 2
→
22
μ
H
CL:
16V 47
μ
F (tantalum type NIPPONCHEMI 16MCE476MD2)
Use the formula below when step-up ratio and output current is large.
CL = (CL standard value)
×
(IOUT(mA) / 300mA
×
VOUT / VIN)
RSENSE:
Not required, but short out the wire.
When AL Electrolytic capacitor is used :
L:
22
μ
H (SUMIDA CDRH5D28, FOSC = 300kHz)
47
μ
H (SUMIDA CDRH5D28, FOSC = 100kHz)
Except when IOUT(mA) / 100mA
×
VOUT / VIN > 2
→
22
μ
H
CL:
16V 100
μ
F (AL electrolytic type) + 10V 2.2
μ
F (ceramic type)
Strengthen appropriately when step-up ratio and output current is large.
RSENSE:
Not required, but short out the wire.
CFB:
Set up so that fzfb = 100kHz.
7
XC9106 / 07 Series
PWM Control, PWM/PFM Switching Control,
Step-up DC/DC Converters
Externally Applied Reference Voltage (Vref)
The value of CFB1, speed-up capacitor for phase compensation, should result in fzfb = 1/(2
π ×
CFB
×
RFB1) equal to 5 to 30kHz. Adjustments are
required depending on the application, value of inductance (L), and value of load capacity (CL).
Semiconductor Ltd.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| XC9106D1DL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1DR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1ML | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D1MR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
| XC9106D3DL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:PWM Control, PWM/PFM Switching Control, Step-up DC/DC Converters |
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