參數(shù)資料
型號(hào)： TPS40074RHL
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 2 A SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, PQCC20
封裝： PLASTIC, QFN-20
文件頁數(shù)： 1/37頁
文件大?。?/td> 448K
代理商： TPS40074RHL
www.ti.com
FEATURES
APPLICATIONS
DESCRIPTION
1
2
3
4
19
18
17
16
SYNC
PGD
LVBP
RT
SA
SAO
GND
SS
TPS40074
15
14
13
12
KFF
ILIM
VDD
HDRV
5
6
7
8
FB
COMP
PGND
LDRV
9 DBP
20
SA+
10
SW
11
BOOST
SYNC IN
PowerGood OUT
VOUT+
(at Load)
VOUT
(at Load)
UDG04075
VIN
VOUT+
VOUT
TPS40074
SLUS617–APRIL 2005
MIDRANGE INPUT SYNCHRONOUS BUCK CONTROLLER
WITH VOLTAGE FEED-FORWARD
The TPS40074 uses voltage feed-forward control
techniques to provide good line regulation over a
Operation Over 4.5-V to 28-V Input Range
wide input voltage range, and fast response to input
Fixed-Frequency Voltage-Mode Controller
line transients. Voltage feed-forward also provides
nearly constant power stage gain with input variation
Integrated Unity Gain Amplifier for Remote
to ease loop compensation of wide input range
Output Sensing
designs. The externally programmable short circuit
Predictive Gate Drive Generation II for
protection provides fault current limiting, as well as
Improved Efficiency
hiccup mode operation for low power dissipation in
<1% Internal 700-mV Reference
the presence of a shorted output. The TPS40074 is
packaged in a 20-pin QFN package for better thermal
Input Voltage Feed Forward Control
performance at higher voltages and frequencies, as
Prebiased Output Compatible
well as reduced footprint.
Internal Gate Drive Outputs for High-Side and
Synchronous N-Channel MOSFETs
SIMPLIFIED APPLICATION DIAGRAM
Switching Frequency Programmable to 1 MHz
20-Pin QFN Package
Thermal Shutdown Protection
Software Design Tool and EVM Available
Power Modules
Networking/Telecom
Industrial
Servers
The TPS40074 is a mid voltage, wide input (4.5-V to
28-V), synchronous, step-down controller, offering
design flexibility for a variety of user programmable
functions, including; soft start, UVLO, operating fre-
quency, voltage feed-forward and high-side FET
sensed short circuit protection.
The TPS40074 incorporates MOSFET gate drivers
for external N-channel high side and synchronous
rectifier (SR) MOSFETs. The gate drive logic incor-
porates second generation predictive anti-cross con-
duction circuitry to prevent simultaneous high side
and
synchronous
rectifier
conduction,
while
minimizing to eliminating current flow in the body
diode of the SR FET. The TPS40074 allows for
starting into pre-biased outputs by not allowing the
synchronous rectifier FET to turn on until the com-
manded voltage during soft start is greater than the
existing pre-bias voltage.
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2005, 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.
相關(guān)PDF資料
PDF描述
TPS40075RHLR 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC20
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TPS40077PWPR 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS40074RHLR 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40074RHLRG4 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40074RHLT 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40074RHLTG4 功能描述:DC/DC 開關(guān)控制器 Mid Input Sync Buck w/Vltg Feed-Fwd RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
TPS40075 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD
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