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TPS61170 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. TPS61170
Description  1.2A High Voltage Boost Converter in 2x2mm2 QFN Package
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPS61170 Datasheet(HTML) 1 Page - Texas Instruments

 
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1
FEATURES
DESCRIPTION
APPLICATIONS
VIN5V
L1
10 H
m
D1
VIN
SW
FB
GND
CTRL
COMP
C2
4.7 F
m
C3
680 pF
TPS 61170
R1
87.6kW
VOUT 12V/300mA
R2
10kW
R3
10kW
C1
4.7 F
m
L1: TOKO#A915_Y-100M
C1:MurataGRM188R61A475K
C2:MurataGRM21BR61E475K
D1: ONsemiMBR0540T1
*R3,C3:CompensationRCnetwork
TPS61170
SLVS789 – NOVEMBER 2007
www.ti.com
1.2A High Voltage Boost Converter in 2x2mm2 QFN Package
• 3-V to 18-V Input Voltage Range
• High Output Voltage: Up to 38 V
The TPS61170 is a monolithic high voltage switching
regulator with integrated 1.2-A, 40-V power MOSFET.
• 1.2-A integrated Switch
It
can
be
configured
in
several
standard
• 1.2-MHz Fixed Switching Frequency
switching-regulator topologies, including boost and
• 12 V at 300 mA and 24 V at 150 mA from 5-V
SEPIC. The device has a wide input-voltage range to
Input (Typical)
support applications with input voltage from multi-cell
batteries or regulated 5-V, 12-V power rails.
• Up to 93% Efficiency
The TPS61170 uses a 1.2-MHz switching frequency,
• On-The-Fly Output Voltage Reprogramming
allowing the use low-profile inductors and low-value
• Skip-Switching Cycle for Output Regulation at
ceramic input and output capacitors. The external
Light Load
loop
compensation
gives
the
user
flexibility
to
• Built-in Soft Start
optimize loop compensation and transient response.
The device has built-in protection features, such as
• 6-Pin, 2 mm × 2 mm QFN Package
pulse-by-pulse overcurrent limit, soft start and thermal
shutdown.
• 5-V to 12-V and 24-V, 12-V to 24-V Boost
The feedback reference voltage of the FB pin is
Converter
1.229V. It can be lowered using a 1-wire digital
interface (Easyscale™ protocol) through the CTRL
• Buck Boost Regulation Using SEPIC Topology
pin. Alternatively, a pulsewidth-modulation (PWM)
• ADSL Modems
signal can be applied to the CTRL pin. The duty cycle
of the signal reduces the feedback reference voltage
proportionally.
The TPS61170 is available in a 6-pin 2 mm
× 2 mm
QFN package, allowing a compact power-supply
solution.
Figure 1. Typical Application
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007, 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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