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| 型號： | SP6139EU-L |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | LEAD FREE, MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大小： | 142K |
| 代理商： | SP6139EU-L |
11
Date: 11/14/05
SP6139 Wide Input, 1.3MHz Synchronous PWM Controller
Copyright 2005 Sipex Corporation
APPLICATIONS INFORMATION
The goal of loop compensation is to manipulate
loop frequency response such that its gain crosses
over 0db at a slope of -20db/dec. The first step
of compensation design is to pick the loop
crossover frequency. High crossover frequency
is desirable for fast transient response, but often
jeopardizes the system stability. Crossover fre-
quency should be higher than the ESR zero but
less than 1/5 of the switching frequency. The
ESR zero is contributed by the ESR associated
with the output capacitors and can be deter-
mined by:
Z(ESR) =
1
2
π COUT RESR
The next step is to calculate the complex conju-
gate poles contributed by the LC output filter,
P(LC) =
1
2
π
L COUT
Frequency
(Hz)
Error Amplify Gain
Bandwidth Product
Condition:
C22 >> CP1, R1 >> RZ3
20 Log (RZ2/R1)
Gain
(dB)
1/6.28(R22)
(CZ2)
1/6.28
(R1)
(CZ3)
1/6.28
(R1)
(CZ2)
1/6.28
(RZ2)
(CP1)
1/6.28
(RZ3)
(CZ3)
Bode Plot of Type III Error Amplify Compensation.
When the output capacitors are of Ceramic type,
the SP6139 Evaluation Board requires a Type
III compensation circuit to give a phase boost of
180
° in order to counteract the effects of an
underdamped resonance of the output filter at
the double pole frequency.
Table 1. Input and Output Stage Component Selection Charts.
INDUCTORS - SURFACE MOUNT
Inductor Specification
Inductance
Manufacturer/Part No.
Series R
ISAT
Size
Inductor Type
Manufacturer
(uH)
m
(a)
LxW(mm)
Ht.(mm)
Website
2.7
Easy Magnet SC5018-2R7M
4.30
12.0
12.6x12.6
4.5
Shielded Ferrite Core
inter-technical.com
2.7
TDK RLF 12560T-2R7N110
4.50
12.2
12.5x12.8
6.0
Shielded Ferrite Core
tdk.com
3.3
Coilcraft DO5010P-332HC
8.60
17.0
14.7x15.2
8.0
Unshielded Ferrite Core
coilcraft.com
1.2
Easy Magnet SC5018-1R2M
1.96
20.0
12.6x12.6
4.5
Shielded Ferrite Core
inter-technical.com
1.2
Inter-Technical SC4015-1R2M
4.37
17.0
10.0x10.0
3.8
Shielded Ferrite Core
inter-technical.com
1.5
Coilcraft DO5010P-152HC
4.00
25.0
14.7x15.2
8.0
Unshielded Ferrite Core
coilcraft.com
1.9
TDK RLF 12560T-1R9N120
3.60
13.2
12.5x12.8
6.0
Shielded Ferrite Core
tdk.com
CAPACITORS -SURFACE MOUNT
Capacitance
Manufacturer/Part No.
ESR
Ripple Current
Size
Voltage
Capacitor
Manufacturer
(uF)
(max)
(A)@45°C
LxW(mm) Ht.(mm)
(V)
Type
Website
22
TDK C3225X5R1C226M
0.002
4.00
3.2x2.5
2.0
16.0
X5R Ceramic
tdk.com
47
TDK C3225X5ROJ476M
0.002
4.00
3.2x2.5
2.5
6.3
X5R Ceramic
tdk.com
MOSFET - Surface Mount
MOSFET
Manufacturer/Part No.
RDS (on)
ID Current
Qg
Voltage
Foot Print
Manufacturer
(max)
(A)
nC(Typ)
nC(Max)
(V)
Website
N-Channel
Fairchild Semi FDS6676S
0.006
14.50
43
60.0
30.0
SO-8
fairchildsemi.com
N-Channel
Fairchild Semi FD7088N3
0.005
21.10
37
48.0
30.0
SO-8
fairchildsemi.com
N-Channel
Vishay Si4336DY
0.004
25.0
32
50.0
30.0
SO-8
vishay.com
Note: Components highlighted in Bold are those used on the SP6139 Evaluation Board.
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| SP6201ER-L-ADJ | 2.7 V-6 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8 |
| SP6341EK1-L-Z-J-D/TR | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| SP6341EK1-L-T-A-C | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6139EU-L/TR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Wide Input, 1.3MHz Synchronous RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| SP615 | 制造商:Power-One 功能描述: 制造商:Power-One 功能描述:POWER SUPPLY |
| SP6153ER1-L | 制造商:Exar Corporation 功能描述: |
| SP615BABT | 制造商:Power-One 功能描述: |
| SP618 | 制造商:Power-One 功能描述: |
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