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參數資料
| 型號： | TPS51427RHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 1/41頁 |
| 文件大小： | 2040K |
| 代理商： | TPS51427RHBR |
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1
FEATURES
DESCRIPTION
APPLICATIONS
TPS51427
www.ti.com................................................................................................................................................ SLUS819B – APRIL 2008 – REVISED SEPTEMBER 2008
DUAL D-CAP SYNCHRONOUS STEP-DOWN CONTROLLER
FOR NOTEBOOK POWER RAILS
23
Fixed-Frequency Emulated On-Time Control;
Frequency Selectable from Three Options
The TPS51427 is a dual synchronous step-down
controller
designed
for
notebook
and
mobile
D-CAP Mode Enables Fast Transient
communications applications. This device is part of a
Response Less than 100 ns
low-cost suite of notebook power bus regulators that
Advanced Ramp Compensation Allows Low
enables system designs with low external component
Output Ripple with Minimal Jitter
counts.
The
TPS51427
includes
two
Selectable PWM-Only/OOA/Auto-Skip Modes
pulse-width-modulation (PWM) controllers, SMPS1
and SMPS2. The output of SMPS1 can be adjusted
Wide Input Voltage Range: 5.5 V to 28 V
from 0.7 V to 5.9 V, while the output of SMPS2 can
Dual Fixed or Adjustable SMPS:
be adjusted from 0.5 V to 2.5 V. This device also
–
0.7 V to 5.9 V (Channel1)
features a low-dropout (LDO) regulator that provides
a 5-V/3.3-V output, or adjustable from 0.7-V to 4.5-V
–
0.5 V to 2.5 V (Channel2)
output via LDOREFIN. The fixed-frequency emulated
Fixed 3.3-V/5-V, or Adjustable Output 0.7-V to
adaptive on-time control supports seamless operation
4.5-V LDO; Capable of Sourcing 100 mA
between PWM mode under heavy load conditions
Fixed 3.3-VREF Output Capable of Sourcing
and reduced frequency operation at light loads for
10 mA
high-efficiency down to the milliampere range. An
integrated boost switch enhances the high-side
Temperature Compensated Low-Side R
DS(on)
MOSFET to further improve efficiency. The main
Current Sensing
control loop is the D-CAP mode that is optimized
Adaptive Gate Drivers with Integrated Boost
for low equivalent series resistance (ESR) output
Switch
capacitors such as POSCAP or SP-CAP. Advanced
ramp compensation minimizes jitter without degrading
Bootstrap Charge Auto Refresh
line and load regulation. RDS(on) current sensing
Integrated Soft Start, Tracking Soft Stop
methods offers maximum cost saving.
Independent PGOOD and EN for Each Channel
The TPS51427 supports supply input voltages that
range from 5.5 V to 28 V. It is available in the 32-pin,
5-mm
×
5-mm
QFN
package
(Green,
RoHs-
Notebook I/O and System Bus Rails
compliant, and Pb-free). The device is specified from
Graphics Application
–40°C to +85°C.
PDAs and Mobile Communication Devices
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
D-CAP, OOA are trademarks of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS51427RHBRG4 | 功能描述:DC/DC 開關控制器 Dual D-Cap Sync Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS51427RHBT | 功能描述:DC/DC 開關控制器 Dual D-Cap Synch Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS51427RHBTG4 | 功能描述:DC/DC 開關控制器 Dual D-Cap Sync Step Down Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS51461 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3-V/5-V Input, 6-A, D-CAP+? Mode Synchronous Step-Down Integrated FETs Converter |
| TPS51461RGER | 功能描述:直流/直流開關轉換器 3.3-5Vin,6A,D-CAP Mode Sync Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
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