- 您现在的位置：买卖IC网 > PDF目录1809 > IR3624MPBF (International Rectifier)IC REG CTRLR BUCK PWM VM 10-MLPD PDF资料下载
参数资料
| 型号： | IR3624MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 16/21页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 10-MLPD |
| 标准包装： | 100 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 660kHz |
| 占空比： | 71% |
| 电源电压： | 4.5 V ~ 14 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 ~ 125°C |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 管件 |
| 配用： | IRPP3624-12A-ND - KIT REF DES 12A 1PH SYNC BUCK |
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 below shows the
compensation types and location of crossover
frequency.
The following design rules will give a crossover
frequency approximately one-tenth of the
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
Compensator
type
TypII(PI)
TypeIII(PID)
Method A
TypeIII(PID)
Method B
F ESR vs. F o
F LC <F ESR <F o <F s/2
F LC <F o <F ESR <F s/2
F LC <F o <F s/2 <F ESR
Output
capacitor
Electrolytic
, Tantalum
Tantalum,
ceramic
Ceramic
overall stability.
Desired Phase Margin:
1 ? Sin Θ
F Z 2 = F o *
1 + Sin Θ
F Z 2 = 16 kHz
Θ max =
π
3
Table1- The compensation type and location
F P 2 = F o *
1 + Sin Θ
1 ? Sin Θ
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.
F P 2 = 224 kHz
Select : F Z1 = 0 . 5 * F Z 2 and F P3 = 0.5 * F s
For this design we have:
R 3 ≥
2
g m
; R 3 ≥ 2K ? ; Select : R 3 = 5K ?
V in =13.2V
V o =1.8V
V osc =1.25V
Calculate C 4 , C 3 and C 7 :
V ref =0.6V
g m =1000umoh
L o =0.82uH
C 4 =
1
2 π * F Z1 * R 3
; C 4 = 3.96nF, Select : C 4 = 3.9nF
C o =2x22uF, ESR=1.5mOhm
F s =600kHz
These result to:
C 3 =
1
2 π * F P 3 * R 3
; C 3 = 106 pF , Select : C 3 = 100 pF
F LC =26.5kHz
F ESR =2.4MHz
C 7 =
2 π * F o * L o * C o * V osc
R 3 * V in
; C 10 = 0 . 26 nF ,
F s/2 =300kHz
Select crossover frequency:
F o < F ESR and F o ≤ ( 1/5 ~ 1/10 ) * F s
Select : C 7 = 0 . 33 nF
Calculate R 10 , R 8 and R 9 :
Fo=60kHz
Since: F LC <F o <F s/2 <F ESR , typeIII method B is
R 10 =
1
2 π * C 7 * F P 2
; R 10 = 2 . 1 K ? , Select : R 10 = 2 K ?
selected to place the poles and zeros.
R 8 =
1
2 π * C 7 * F Z 2
? R 10 ; R 8 = 28 K ? , Select : R 8 = 28 K ?
R 9 =
V ref
V o ? V ref
* R 8 ; R 9 = 14 K ? , Select : R 9 = 14 K ?
16
相关PDF资料 |
PDF描述 |
|---|---|
| IR3628MPBF | IC CTLR PWM BUCK SYNC 12-MLPD |
| IR3629AMTRPBF | IC CTLR PWM SYNC BUCK 12-MLPD |
| IR3637ASTRPBF | IC REG CTRLR BUCK PWM VM 8-SOIC |
| IR3637STRPBF | IC REG CTRLR BUCK PWM VM 8-SOIC |
| IR3638STRPBF | IC REG CTRLR BUCK PWM VM 14-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3624MTRPBF | 功能描述:开关变换器、稳压器与控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 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 |
| IR3628MPBF | 功能描述:IC CTLR PWM BUCK SYNC 12-MLPD RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| IR3628MTRPBF | 功能描述:电压模式 PWM 控制器 HI FREQ SYNC PWM 600kHz 5 or 12V 0.6 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| IR3629 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT |
| IR3629A | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER WITH POWER GOOD OUTPUT |
发布紧急采购，3分钟左右您将得到回复。