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参数资料
| 型号： | IRU3048CFTR |
| 厂商： | International Rectifier |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 16TSSOP |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 3 |
| 频率 - 最大： | 220kHz |
| 占空比： | 90% |
| 电源电压： | 4.2 V ~ 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： | 0°C ~ 70°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 剪切带 (CT) |
| 产品目录页面： | 1384 (CN2011-ZH PDF) |
| 其它名称： | *IRU3048CFTR IRU3048CFCT |
IRU3048
Layout Consideration
The layout is very important when designing high fre-
quency switching converters. Layout will affect noise
pickup and can cause a good design to perform with
less than expected results.
Start to place the power components, make all the con-
nection in the top layer with wide, copper filled areas.
The inductor, output capacitor and the MOSFET should
be close to each other as possible. This helps to reduce
the EMI radiated by the power traces due to the high
switching currents through them. Place input capacitor
TYPICAL APPLICATION
12V to 3.3V @ 4A
12V to 1.8V @ 4A
3.3V to 2.5V @ 2A
12V
directly to the drain of the high-side MOSFET, to reduce
the ESR replace the single input capacitor with two par-
allel units. The feedback part of the system should be
kept away from the inductor and other noise sources,
and be placed close to the IC. In multilayer PCB use
one layer as power ground plane and have a control cir-
cuit ground (analog ground), to which all signals are ref-
erenced. The goal is to localize the high current path to
a separate loop that does not interfere with the more
sensitive analog control function. These two grounds
must be connected together on the PC board layout at a
single point.
D1
BAT54S
C2
33uF
L1
1uH
C3
0.1uF
C1
1uF
VcH1
VcH2
C6
47uF
C7
1uF
C8
1uF
Vcc
HDrv1
1/2 of Q2
IRF7313
L3
C11, C12
2x 150uF
C10
10uH
3.3V @ 4A
C13
3.3V
470pF
1uF
C9
47uF
Q1
IRLR2703
R2
10 V
V OUT3
LDrv1
PGnd
1/2 of Q2
IRF7313
R4
4.7 V
R6
1.65K
R5
2.5V @ 2A
C14
1uF
1K
C15
47uF
R7
1K
Fb3
U1
IRU3048
Fb1
C16
47uF
C17
1uF
R8
1K
C18
1800pF
R9
43.2K
Comp1
HDrv2
1/2 of Q3
IRF7313
C20
L4
6.8uH
C21, C22
2x 150uF
1.8V @ 4A
C23
470pF
1uF
C19
3900pF
R11
16.2K
Comp2
LDrv2
1/2 of Q3
IRF7313
R13
4.7 V
R14
C24
SS
Gnd
Fb2
442 V
0.1uF
R15
1K
Figure 8 - Typical application of IRU3048 in an on-board DC-DC converter
using a single 12V supply for switcher.
Rev. 1.7
09/12/02
www.irf.com
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRU3048CS | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER |
| IRU3048CSTR | 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5 |
| IRU3048CSTRPBF | 制造商:International Rectifier 功能描述:Dual Synchronous PWM Controller Circuitry and LDO Controller 16-Pin SOIC N T/R |
| IRU3055 | 制造商:IRF 制造商全称:International Rectifier 功能描述:5-BIT PROGRAMMABLE 3-PHASE SYNCHRONOUS BUCK CONTROLLER IC |
| IRU3055CQ | 制造商:IRF 制造商全称:International Rectifier 功能描述:5-BIT PROGRAMMABLE 3-PHASE SYNCHRONOUS BUCK CONTROLLER IC |
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