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| 型号： | IRU3007CWTR |
| 厂商： | International Rectifier |
| 文件页数： | 15/17页 |
| 文件大小： | 0K |
| 描述： | IC CTRL/REG SYNC BUCK 28-SOIC |
| 标准包装： | 1,000 |
| 应用： | 控制器，Intel Pentium? II |
| 输入电压： | 5V，12V |
| 输出数： | 4 |
| 输出电压： | 1.3 V ~ 3.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 带卷 (TR) |
IRU3007
Start the layout by first placing the power components:
9) Place R12 and C10 close to pin 23 and R9 and C5
close to pin 9.
1) Place the input capacitors C3 and C14 and the high
side MOSFETs, Q1 and Q3 as close to their respec-
10) Place C9 close to pin 12
tive input caps as possible.
Component connections:
2) Place the synchronous MOSFET, Q2 and the Q3 as
close to each other as possible with the intention
that the source of Q3 and drain of the Q4 has the
shortest length. Repeat this for the Q1 and D1 for the
non-synchronous.
3) Place the snubber R15 and C13 between Q4 and Q3.
Repeat this for R1 and C4 with respect to the Q1 and
D1 for the non-synchronous.
4) Place the output inductor , L3 and the output capaci-
tors, C16 between the MOSFET and the load with
output capacitors distributed along the slot 1 and
close to it. Repeat this for L2 with respect to the C1
for the non-synchronous.
Note: It is extremely important that no data bus should
be passing through the switching regulator section spe-
cifically close to the fast transition nodes such as PWM
drives or the inductor voltage.
Using the 4 layer board, dedicate one layer to ground,
another layer as the power layer for the 5V, 3.3V, Vcore,
1.5V and if it is possible, for the 2.5V.
Connect all grounds to the ground plane using direct
vias to the ground plane.
Use large low inductance/low impedance plane to con-
nect the following connections either using component
side or the solder side.
5) Place the bypass capacitors, C8 and C19 right next
to 12V and 5V pins. C8 next to the 12V, pin 28 and
C19 next to the 5V, pin 11.
6) Place the IRU3007 such that the pwm output drives,
pins 27 and 25 are relatively short distance from gates
of Q3 and Q4. The non-synch MOSFET must also
be situated such that the distance from its gate to
the pin 1 of the IRU3007 is also relatively short.
7) Place all resistor dividers close to their respective
feedback pins.
a) C14 to Q3 Drain and C3 to Q1 drain
b) Q3 Source to Q4 Drain and Q1 Source to D1
cathode
c) Q4 drain to L3 and D1 cathode to L2
d) L3 to the output capacitors, C16 and L2 to the
output capacitors, C1
e) C16 to the load, slot 1
f) Input filter L1 to the C16 and C3
g) C1 to Q2 drain
h) C17 to the Q2 source
I) A minimum of 0.2 inch width trace from the C18
capacitor to pin 16
8) Place the 2.5V output capacitor, C18 close to the pin
16 of the IC and the 1.5V output capacitor, C17 close
to the Q2 MOSFET.
Connect the rest of the components using the shortest
connection possible.
Note: It is better to place the 1.5V linear regulator
components close to the IRU3007 and then run a
trace from the output of the regulator to the load.
However, if this is not possible then the trace from
the linear drive output pin, pin 18 must be run away
from any high frequency data signals.
It is critical, to place high frequency ceramic capaci-
tors close to the clock chip and termination resistors
to provide local bypassing.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information
Data and specifications subject to change without notice. 02/01
Rev. 2.1
08/20/02
www.irf.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRU3008CWTR | 功能描述:IC REG 24-SOIC(W) RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| IRU3010CW | 制造商:International Rectifier 功能描述:SWITCHING CONTROLLER |
| IRU3010CWTR | 功能描述:IC REG BUCK SYNC 20SOIC(W) RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:20 系列:SIMPLE SWITCHER® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:12V 输入电压:4 V ~ 60 V PWM 型:电压模式 频率 - 开关:52kHz 电流 - 输出:1A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:16-DIP 其它名称:*LM2575HVN-12LM2575HVN-12 |
| IRU3011 | 制造商:IRF 制造商全称:International Rectifier 功能描述:5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| IRU3011CW | 功能描述:IC CTRL SYNC BUCK 5BIT 20-SOIC RoHS:否 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) |
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