參數(shù)資料
型號(hào)： SP61346
英文描述： Dual Supply Synchronous Buck Controller
中文描述： 雙電源同步降壓控制器
文件頁(yè)數(shù)： 12/14頁(yè)
文件大?。?/td> 188K
代理商： SP61346
12
Date: 2/16/06
SP6134 Dual Supply, Synchronous Buck Controller Copyright 2006 Sipex Corporation
APPLICATIONS INFORMATION: Continued
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
C
OUT
R
ESR
The next step is to calculated the complex con-
jugate poles contributed by the LC output filter,
P(LC)
=
1
2
π
L C
OUT
Fr(Hz)
Error Amplify Gain
Condition:
20 Log (RZ2/R1)
(dB)
1
1
1
1
1
Bode Plot of Type III Error Amplify Compensation.
When the output capacitors are of a Ceramic
Type, the SP6134
EB
Evaluation Board requires
a Type III compensation circuit to give a phase
boost of 180
°
in order to counteract the effects of
an under damped resonance of the output filter
at the double pole frequency.
Table 1. Input and Output Stage Components Selection Charts.
INDUCTORS - SURFACE MOUNT
Inductor Specification
Inductance
(uH)
Manufacturer/Part No.
Series R
m
4.30
4.50
8.60
I
SAT
(a)
Size
Inductor Type
Manufaturer
Website
LxW(mm)
Ht.(mm)
2.7
2.7
3.3
Easy Magnet SC5018-2R7M
TDK RLF 12560T-2R7N110
Coilcraft DO5010P-332HC
12.0
12.2
17.0
12.6x12.6
12.5x12.8
14.7x15.2
4.5
6.0
8.0
Shielded Ferrite Core
Shielded Ferrite Core
Unshielded Ferrite Core
inter-technical.com
tdk.com
coilcraft.com
1.2
1.2
1.5
1.9
Easy Magnet SC5018-1R2M
Inter-Technical SC4015-1R2M
Coilcraft DO5010P-152HC
TDK RLF 12560T-1R9N120
1.96
4.37
4.00
3.60
CAPACITORS -SURFACE MOUNT
20.0
17.0
25.0
13.2
12.6x12.6
10.0x10.0
14.7x15.2
12.5x12.8
4.5
3.8
8.0
6.0
Shielded Ferrite Core
Shielded Ferrite Core
Unshielded Ferrite Core
Shielded Ferrite Core
inter-technical.com
inter-technical.com
coilcraft.com
tdk.com
Capacitance
(uF)
22
47
Manufacturer/Part No.
ESR
(max)
0.002
0.002
Ripple Current
(A)@45
°
C
4.00
4.00
Size
Voltage
(V)
16.0
6.3
Capacitor
Type
X5R Ceramic
X5R Ceramic
Manufaturer
Website
tdk.com
LxW(mm) Ht.(mm)
3.2x2.5
3.2x2.5
TDK C3225X5R1C226M
TDK C3225X5ROJ476M
2.0
2.5
tdk.com
MOSFET - Surface Mount
MOSFET
Manufacturer/Part No.
RDS (on)
(max)
0.006
ID Current
(A)
14.50
Qg
Qg
Voltage Foot Print
(V)
30.0
SO-8
Manufaturer
Website
nC(Typ)
43
nC(Max)
60.0
N-Channel
Fairchild Semi FDS6676S
fairchildsemi.com
N-Channel
N-Channel
Note: Components highlighted in Bold are those used on the SP6134 Evaluation Board.
Fairchild Semi FD7088N3
Vishay Si4336DY
0.005
0.004
21.10
25.0
37
32
48.0
50.0
30.0
30.0
SO-8
SO-8
fairchildsemi.com
vishay.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SP6134CU 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Dual Supply Synchronous Buck Controller
SP6134CU/TR 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Dual Supply Synchronous Buck Controller
SP6134CU-L 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 Dual-Supply Synchronous, Cntrllr 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(kāi)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
SP6134CU-L/TR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 Dual-Supply Synchronous, Cntrllr 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(kāi)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
SP6134EB 功能描述:電壓模式 PWM 控制器 Dual Supply Sync Buck Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開(kāi)關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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