参数资料
型号: TPS54350PWPR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 6.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
封装: GREEN, PLASTIC, HTSSOP-16
文件页数: 1/32页
文件大小: 762K
代理商: TPS54350PWPR
TPS54350
SLVS456C OCTOBER 2003 REVISED OCTOBER 2004
4.5V TO 20V INPUT, 3A OUTPUT SYNCHRONOUS PWM
SWITCHER WITH INTEGRATED FET (SWIFT)
6,4 mm y 5,0 mm
FEATURES
D 100 m, 4.5-A Peak MOSFET Switch for High
Efficiency at 3-A Continuous Output Current
D Uses External Lowside MOSFET or Diode
D Output Voltage Adjustable Down to 0.891 V
With 1% Accuracy
D Synchronizes to External Clock
D 1805 Out of Phase Synchronization
D Wide PWM Frequency Fixed 250 kHz,
500 kHz or Adjustable 250 kHz to 700 kHz
D Internal Slow Start
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Adjustable Undervoltage Lockout
D 16-Pin TSSOP PowerPADE Package
APPLICATIONS
D Industrial & Commercial Low Power Systems
D LCD Monitors and TVs
D Computer Peripherals
D Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs and
Microprocessors
PH
VIN
PGND
BOOT
VSENSE
COMP
PWRPAD
VBIAS
ENA
PWRGD
Input
Voltage
Output
Voltage
LSG
TPS54350
SYNC
Simplified Schematic
DESCRIPTION
The TPS54350 is a medium output current synchronous
buck PWM converter with an integrated high side
MOSFET and a gate driver for an optional low side
external MOSFET. Features include a high performance
voltage
error
amplifier
that
enables
maximum
performance under transient conditions and flexibility in
choosing the output filter inductors and capacitors. The
TPS54350 has an under-voltage-lockout circuit to prevent
start-up until the input voltage reaches 4.5 V; an internal
slow-start circuit to limit in-rush currents; and a power good
output
to
indicate
valid
output
conditions.
The
synchronization feature is configurable as either an input
or an output for easy 180
° out of phase synchronization.
The TPS54350 device is available in a thermally
enhanced 16-pin TSSOP (PWP) PowerPAD
package.
TI provides evaluation modules and the SWIFT
Designer
software tool to aid in quickly achieving high-performance
power supply designs to meet aggressive equipment
development cycles.
50
55
60
65
70
75
80
85
90
95
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
EFFICIENCY
vs
LOAD CURRENT
VI = 12 V
VO = 5 V
fS = 250 kHz
Efficiency
%
IL Load Current A
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
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.
www.ti.com
Copyright
2003 2004, Texas Instruments Incorporated
PowerPAD and SWIFT are trademarks of Texas Instruments.
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TPS54350PWP 6.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
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