TPS62090, TPS62091
TPS62092, TPS62093
www.ti.com
SLVSAW2A –MARCH 2012–REVISED MARCH 2012
3A High Efficient Synchronous Step Down Converter with DCS™ Control
Check for Samples: TPS62090, TPS62091, TPS62092, TPS62093
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FEATURES
DESCRIPTION
The TPS6209x device family is a high frequency
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2.5 V to 6 V Input Voltage Range
DCS™ Control
synchronous step down converter optimized for small
solution size, high efficiency and suitable for battery
powered applications. To maximize efficiency, the
converter operates in PWM mode with a nominal
switching frequency of 2.8 MHz/1.4 MHz and
automatically enters Power Save Mode operation at
light load currents. When used in distributed power
supplies and point of load regulation, the device
allows voltage tracking to other voltage rails and
tolerates output capacitors ranging from 10 µF up to
150 µF and beyond. Using the DCS™ Control
topology the device achieves excellent load transient
performance and accurate output voltage regulation.
95% Converter Efficiency
Power Save Mode
20 µA Operating Quiescent Current
100% Duty Cycle for Lowest Dropout
2.8 MHz/1.4 MHz Typical Switching Frequency
0.8 V to VIN Adjustable Output Voltage
Fixed Output Voltage Versions
Output Discharge Function
Adjustable Softstart
The output voltage start-up ramp is controlled by the
softstart pin, which allows operation as either a
standalone power supply or in tracking configurations.
Power sequencing is also possible by configuring the
Enable and Power Good pins. In Power Save Mode,
the device operates at typically 20 µA quiescent
current. Power Save Mode is entered automatically
and seamlessly maintaining high efficiency over the
entire load current range.
Two Level Short Circuit Protection
Output Voltage Tracking
Wide Output Capacitance Selection
Available in 3x3mm 16 Pin QFN Package
APPLICATIONS
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Distributed Power Supplies
Notebook, Netbook Computers
Hard Disk Drivers
Processor Supply
Battery Powered Applications
100
95
90
85
80
75
70
65
L1
470nH
TPS62090
PVIN
Vin
2.5V to 6V
Vout
1.8V/3A
12
11
1
SW
SW
2
C1
10mF
C2
22mF
PVIN
10
13
7
16
5
AVIN
EN
VOS
FB
R3
500k
C3
10nF
4
PG
FREQ
AGND
CP
CN
SS
Power Good
3
8
C4
VOUT = 3.3 V
L = 1 µH
f = 1.4 MHz
VIN = 3.7 V
VIN = 4.2 V
VIN = 5 V
60
55
50
10nF
9
6
PGND PGND
14 15
100m
1
10
100
1k
10k
I load (mA)
G002
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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.
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All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated
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