TPS61130_15 Datasheet, PDF (1/33 Pages) Texas Instruments – Synchronous SEPIC and Flyback Converter

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS61130, TPS61131, TPS61132
SLVS431C – JUNE 2002 – REVISED SEPTEMBER 2015
TPS6113x Synchronous SEPIC and Flyback Converter
With 1.1-A Switch and Integrated LDO
1 Features
•1 Synchronous, Up to 90% Efficient, SEPIC
Converter With 300-mA Output Current From
2.5-V Input
• Integrated 200-mA Reverse Voltage Protected
LDO for DC-DC Output Voltage Post Regulation
or Second Output Voltage
• 40-μA (Typical) Quiescent Current
• Input Voltage Range: 1.8 V to 5.5 V
• Fixed and Adjustable Output Voltage Options up
to 5.5 V
• Power Save Mode for Improved Efficiency at Low-
Output Power
• Low Battery Comparator
• Power Good Output
• Low EMI-Converter (Integrated Antiringing Switch)
• Load Disconnect During Shutdown
• Overtemperature Protection
• Available in a Small 4-mm × 4-mm VQFN-16 or in
a TSSOP-16 Package
2 Applications
• All Single Cell Li, Dual or Triple Cell Battery or
USB Powered Products as MP-3 Player, PDAs,
and Other Portable Equipment
• Dual Input or Dual Output Mode
• High Efficient Li-Ion to 3.3-V Conversion
Typical Application Schematic
22 µH
1.8 V up to 6 V
Input
10 µF
VBAT
LBI
SWN
SWP
VOUT
TPS61130
FB
Control
Inputs
OFF
OFF
OFF
ON
SKIPEN
ON
EN
ON
LDOEN
PGOOD
LBO
LDOIN
LDOOUT
LDOSENSE
GND PGND
22 µH
10 µF
V_Out1
e.g. 3.3 V
up to 300 mA
100 µF
Control
Outputs
V_Out2
e.g. 1.5 V
up to 300 mA
2.2 µF
3 Description
The TPS6113x devices provide a complete power
supply solution for products powered by either a one-
cell Li-Ion or Li-Polymer, or two- to four-cell Alkaline,
NiCd, or NiMH batteries. The devices can generate
two regulated output voltages. It provides a simple
and efficient buck-boost solution for generating 3.3 V
out of an input voltage that can be both higher and
lower than the output voltage. The converter provides
a maximum output current of at least 300 mA with
supply voltages down to 1.8 V. The implemented
SEPIC converter is based on a fixed frequency,
pulse-width-modulation (PWM) controller using a
synchronous rectifier to obtain maximum efficiency.
The maximum peak current in the SEPIC switch is
limited to a value of 1600 mA.
The converter can be disabled to minimize battery
drain. During shutdown, the load is completely
disconnected from the battery. A low-EMI mode is
implemented to reduce ringing, and in effect, lower
radiated electromagnetic energy when the converter
enters the discontinuous conduction mode. A power
good output at the SEPIC stage provides additional
control of any connected circuits like cascaded power
supply stages, or microprocessors.
The built-in LDO can be used for a second output
voltage derived either from the SEPIC output or
directly from the battery. The output voltage of this
LDO can be programmed by an external resistor
divider or is fixed internally on the chip. The LDO can
be enabled separately, that is, using the power good
of the SEPIC stage. The device is packaged in a 16-
pin VQFN package measuring 4 mm × 4 mm (RSA)
or in a 16-pin TSSOP (PW) package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61130
TSSOP (16)
VQFN (16)
5.00 mm × 4.40 mm
4.00 mm × 4.00 mm
TPS61131
TPS61132
TSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.