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| 型号： | IP1201PBF |
| 厂商： | International Rectifier |
| 文件页数： | 13/29页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 30A 198BGA |
| 产品变化通告： | (EP) Parts Discontinuation 25/May/2012 |
| 标准包装： | 10 |
| 系列： | iPOWIR™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 3.3 V |
| 输入电压： | 3.14 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 400kHz |
| 电流 - 输出： | 30A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 198-BGA（159 凸块） |
| 包装： | 散装 |
| 供应商设备封装： | BGA（15.5x9.25） |
| 配用： | IRDCIP1201-A-ND - BUCK CONV REF DESIGN KIT IP1201 |
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iP1201PbF
iP1201PbF User?s Design Guidelines
iP1201
The iP1201PbF can be configured as a dual channel
15A or parallel single 30A power block consisting of
optimized power semiconductors, PWM control and
its associated passive components. It is based on a
synchronous buck topology and offers an optimized
solution where space, efficiency and noise caused by
parasitics are of concern. The phase shifted, two out-
put power block operates with fixed frequency voltage
mode control and can be configured to operate as a
dual output or paralleled single output with current shar-
ing. The iP1201PbF components are integrated in a
ball grid array (BGA) package.
SS1/SS2
10
Iss
iP1201PbF
Css
V IN
The input operating voltage range of the iP1201PbF is
3.14V to 5.5V. Both channels of the power block have a
common input.
For applications where the input bus voltage is less
than 3.5V, A and B pins should be shorted. For input
voltages greater than 3.5V, A and B pins should be
disconnected and floating. Voltages at A and B pins
are internally generated, no external voltage source
should be connected to either one of these pins. A
Power-On-Reset is performed when V IN falls below
2.5V.
Enabling the Outputs
The ENABLE pin turns on and turns off both outputs
of the iP1201PbF simultaneously. The iP1201PbF out-
puts will be turned off by pulling the ENABLE pin to V IN .
ENABLE low will start the outputs. The converter can
also be shutdown by pulling the soft-start pins to
PGND through a logic level MOSFET the drain of
which connects to the soft start pin (see Fig.14).
This feature can be useful if sequencing or different
start-up timing of the outputs are required. In situa-
tions where the output has undergone a latched shut-
down due to overvoltage or overcurrent, cycling
ENABLE will reset the outputs. Cycling soft start pins
will not unlatch the outputs.
Dual Soft Start
The Soft Start function provides a controlled rise of
the output voltage, thus limiting the inrush current
during start-up. The iP1201 PbF provides two indepen-
dent soft start functions. The soft start pins can be
connected to the soft start capacitors to provide
www.irf.com
Fig. 14: Soft Start/Enable Circuit
different start-up and sequencing profiles.
Each soft start function has an internal 25uA +/-20%
current source that charges the external soft start
capacitor C ss up to 3V. During power-up, the output
voltage starts ramping up only after the charging
voltage across the C ss capacitor has reached a
0.8Vtyp threshold, as shown in Fig. 15.
3V
0.8Vtyp
V Css
V OUT
Fig. 15: Power Up Threshold
This threshold voltage should be taken into consid-
eration when designing sequencing profiles using
the iP1201PbF as it will effect start-up delays and ramp-
times.
To ensure complete discharge of the soft start ca-
pacitor C ss, it is recommended to add a 1M ? resis-
tor directly across C ss .
For proper implementation of sequencing of out-
puts using the iP1201PbF, refer to IR Application Note
AN-1053 - Power sequencing techniques using
iP1201 and iP1202.
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IP1201TR | 功能描述:开关变换器、稳压器与控制器 DUAL OUTPUT 2-Phase 3.14 to 5V 400kHz 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 |
| IP1201TRPBF | 功能描述:开关变换器、稳压器与控制器 DUAL OUTPUT 2-Phase 3.14 to 5V 400kHz 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 |
| IP1202 | 功能描述:开关变换器、稳压器与控制器 DUAL OUTPUT 2-Phase 5.5V to 13.2V 15A 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 |
| IP1202PBF | 功能描述:开关变换器、稳压器与控制器 DUAL OUTPUT 2-Phase 5.5V to 13.2V 15A 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 |
| IP1202PBF-EL | 制造商:International Rectifier 功能描述: |
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