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參數資料
| 型號： | TPS54320RHL |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, PQCC14 |
| 封裝： | 3.50 X 3.50 MM, GREEN, PLASTIC, QFN-14 |
| 文件頁數： | 1/39頁 |
| 文件大小： | 1358K |
| 代理商： | TPS54320RHL |
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0
0.5
1
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Load Current - A
Efficiency
-
%
VOUT = 5 V
VOUT = 3.3 V
VOUT = 1.8 V
VIN = 12 V,
Fsw = 500 kHz
PH
PVIN
GND
BOOT
VSENSE
COMP
TPS54320
EN
RT/CLK
SS/TR
Exposed
Thermal
Pad
Css
Rrt
R3
C1
Cboot
Co
Lo
R1
R2
Cin
C2
VIN
VIN
VOUT
PWRGD
www.ti.com
SLVS982A – AUGUST 2010 – REVISED SEPTEMBER 2010
4.5V to 17V Input, 3A Synchronous Step Down SWIFT Converter
Check for Samples: TPS54320
1
FEATURES
Power Good Output for Undervoltage and
Overvoltage Monitoring
2
Integrated 57m
/ 50m MOSFETs
Adjustable Input Undervoltage Lockout
Split Power Rail: 1.6V to 17V on PVIN
Supported by SwitcherPro Software Tool
200kHz to 1.2MHz Switching Frequency
For SWIFT Documentation and
Synchronizes to External Clock
SwitcherPro, visit http://www.ti.com/swift
0.8V Voltage Reference With ±1% Accuracy
Low 2A Shutdown Quiescent Current
APPLICATIONS
Hiccup Overcurrent Protection
Broadband, Networking & Communication
Monotonic Start-Up into Prebiased Outputs
Infrastructure
Automated Test and Medical Equipment
–40°C to 150°C Operating Junction
Temperature Range
DSP and FPGA Point-of-Load Applications
from 12-V Bus
Pin-to-Pin Compatible with the TPS54620
Adjustable Slow Start/Power Sequencing
DESCRIPTION
The TPS54320 is a full featured 17V, 3A synchronous step down converter which is optimized for small designs
through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved
through current mode control, which reduces component count, and by selecting a high switching frequency,
reducing the inductor's footprint.
The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone
power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and
the open drain power good pins.
Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced
by a low-side sourcing current limit which prevents current runaway. Hiccup protection will be triggered if the
overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die
temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14 pin, 3.5mm x 3.5mm
QFN, thermally enhanced package.
WHITE SPACE
SIMPLIFIED SCHEMATIC
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
SwitcherPro, SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2010, 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 |
|---|---|
| TPS54320RHLR | 功能描述:直流/直流開關轉換器 4.5-17V Inp3A Sync Step Down Cnvrtr 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 |
| TPS54320RHLT | 功能描述:直流/直流開關調節器 4.5-17V Inp3A Sync Step Down Cnvrtr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS54320RHLT | 制造商:Texas Instruments 功能描述:IC SYNC STEP-DOWN CONTROLLER 1.2MHZ Q 制造商:Texas Instruments 功能描述:IC, SYNC STEP-DOWN CONTROLLER, 1.2MHZ, QFN-14 |
| TPS54325 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5-V to 18-V, 3-A OUTPUT SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET (SWIFT?) |
| TPS54325_10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5-V to 18-V, 3-A OUTPUT SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET (SWIFT?) |
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