收藏本站
参数资料
型号： IR3622AMTRPbF
厂商： International Rectifier
英文描述： HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING
中文描述： 高频2相，单或双输出同步降压控制器，输出跟踪和排序
文件页数： 15/33页
文件大小： 690K
代理商： IR3622AMTRPBF
IR3622AMPbF
www.irf.com
To cancel one of the LC filter poles, place the
zero before the LC filter resonant frequency pole:
Using equations (18) and (20) to calculate C9.
One more capacitor is sometimes added in
parallel with C
9 and R4. This introduces one more
pole which is mainly used to suppress the
switching noise.
The additional pole is given by:
The pole sets to one half of switching frequency
which results in the capacitor C
POLE:
For a general solution for unconditional stability
for any type of output capacitors in a wide range
of ESR values, we should implement local
feedback with a compensation network (typeIII).
The typically used compensation network for
voltage-mode controller is shown in figure 21.
In such configuration, the transfer function is
given by:
The error amplifier gain is independent of the
transconductance under the following condition:
By replacing Z
in and Zf according to figure 15, the
transformer function can be expressed as:
-(20)
-
C
L
2
1
75
0
F
75
F
o
z
LC
z
*
.
%
π
=
As known, transconductance amplifier has high
impedance (current source) output, which needs
to be considered when loading the E/A output. If
the source/sink output current capability is
exceeded the amplifier will not be able to swing
its output voltage over the necessary range.
The compensation network has three poles and
two zeros and they are expressed as follows:
Cross over frequency is expressed as:
C
R
2
1
F
POLE
9
POLE
9
4
P
+
=
*
π
2
F
For
F
R
*
1
C
1
F
R
1
C
s
P
s
4
9
s
4
POLE
<<
=
*
π
VOUT
VREF
R5
R6
R8
C10
C12
C11
R7
Ve
FZ1
FZ2
FP2
FP3
E/A
Zf
ZIN
Frequency
Gain(dB)
H(s) dB
Fb
Comp
Fig. 21: Compensation network with local
feedback and its asymptotic gain plot
IN
m
f
m
o
e
Z
g
1
Z
g
1
V
+
=
22
(
)
[]
)
(
*
)
(
*
)
(
)
(
10
8
12
11
12
11
7
8
6
10
11
7
12
11
6
C
sR
1
C
sR
1
R
sC
1
C
sR
1
C
sR
1
s
H
+
+
=
6
10
8
6
10
2
z
11
7
1
z
12
7
12
11
12
11
7
3
P
10
8
2
P
1
P
R
C
2
1
R
C
2
1
F
C
R
2
1
F
C
R
2
1
C
R
2
1
F
C
R
2
1
F
0
F
*
)
(
*
π
+
=
+
=
o
osc
in
10
7
o
C
L
2
1
V
C
R
F
*
π
=
-(21)
-
1
Z
*
g
and
1
Z
*
g
in
m
f
m
>>
F
R
2
1
C
z
4
9
*
π
=
相关PDF资料
PDF描述
IR3628MPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
IR3628MTRPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
IR3629AMPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT
IR3629AMTRPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT
IR3629A HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT
相关代理商/技术参数
参数描述
IR3622MPBF 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
IR3622MTRPBF 功能描述:开关变换器、稳压器与控制器 HI FREQ 2-PHASE Single or Dual SYNCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
IR3623MPBF 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR)
IR3623MPBF_1 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING
IR3623MTRPBF 功能描述:开关变换器、稳压器与控制器 HI FREQ 2-PHASE Single or Dual SYNCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*