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參數(shù)資料
| 型號： | IR3624MPBF |
| 廠商： | International Rectifier |
| 英文描述： | HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER |
| 中文描述： | 高頻同步PWM降壓控制器 |
| 文件頁數(shù)： | 16/21頁 |
| 文件大小： | 803K |
| 代理商： | IR3624MPBF |
IR3624MPBF
Based on the frequency of the zero generated by
output capacitor and its ESR versus crossover
frequency, the compensation type can be
different.
The
table
compensation types and location of crossover
frequency.
below
shows
the
The following design rules will give a crossover
frequency
approximately
switching frequency. The higher the band width,
the potentially faster the load transient response.
The DC gain will be large enough to provide high
DC-regulation accuracy (typically -5dB to -12dB).
The phase margin should be greater than 45
o
for
overall stability.
one-tenth
of
the
Desired Phase Margin:
Ceramic
F
LC
<F
o
<F
s/2
<F
ESR
TypeIII(PID)
Method B
Tantalum,
ceramic
F
LC
<F
o
<F
ESR
<F
s/2
TypeIII(PID)
Method A
Electrolytic
, Tantalum
F
LC
<F
ESR
<F
o
<F
s/2
TypII(PI)
Output
capacitor
F
ESR
vs. F
o
Compensator
type
16
K
K
K
K
π
2
K
2
K
1
.
π
2
π
2
π
2
π
2
Θ
Θ
Θ
Θ
14
R
Select
,
14
R
;
R
V
V
V
R
28
R
:
Select
,
28
R
;
R
F
C
1
R
R
Select
,
2
R
F
C
1
R
R
and
R
,
R
Calculate
nF
33
.
0
C
Select
,
nF
26
.
0
C
;
V
R
V
C
L
F
C
pF
100
C
Select
,
pF
106
C
;
R
F
1
C
3.9nF
C
Select
3.96nF,
C
R
F
*
1
C
:
C
and
C
C
Calculate
5K
R
Select
;
2K
R
g
2
R
F
*
0.5
F
and
F
5
.
0
F
:
Select
kHz
224
F
Sin
1
Sin
1
F
F
kHz
16
F
Sin
1
Sin
1
F
F
9
9
8
ref
o
ref
9
8
8
10
2
Z
7
8
10
10
2
P
7
10
9
8
10
7
10
in
3
osc
o
o
*
o
7
3
3
3
3
P
3
4
4
3
Z1
4
7
3
4
3
3
m
3
s
P3
2
Z
Z1
2
P
o
2
P
2
Z
o
2
Z
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
≥
≥
=
=
=
+
=
=
+
=
*
*
*
*
*
:
*
*
*
*
*
*
*
*
*
*
3
π
Θ
=
max
Table1- The compensation type and location
of F
ESR
versus F
o
The details of these compensation types are
discussed in application note AN-1043 which can
be downloaded from IR Web-Site.
For this design we have:
V
in
=13.2V
V
o
=1.8V
V
osc
=1.25V
V
ref
=0.6V
g
m
=1000umoh
L
o
=0.82uH
C
o
=2x22uF, ESR=1.5mOhm
F
s
=600kHz
These result to:
F
LC
=26.5kHz
F
ESR
=2.4MHz
F
s/2
=300kHz
Select crossover frequency:
Fo=60kHz
Since:
F
LC
<F
o
<F
s/2
<F
ESR
, typeIII method B is
selected to place the poles and zeros.
(
1/5
)
s
o
ESR
F
o
F
1/10
~
F
and
F
*
≤
<
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| IR3624MTRPBF | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IR3628MPBF | 功能描述:IC CTLR PWM BUCK SYNC 12-MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| IR3628MTRPBF | 功能描述:電壓模式 PWM 控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(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 |
| IR3629 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT |
| IR3629A | 制造商:IRF 制造商全稱:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT |
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