TPS62097 Datasheet, PDF (1/28 Pages) Texas Instruments – TPS62097 2-A High Efficiency Step-Down Converter with iDCS-Control, Forced PWM Mode and Selective Switching Frequency

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TPS62097
SLVSCD6 – DECEMBER 2015
TPS62097 2-A High Efficiency Step-Down Converter with iDCS-Control, Forced PWM
Mode and Selective Switching Frequency
1 Features
•1 iDCS-Control Topology
• Forced PWM or Power Save Mode
• Up to 97% Efficiency
• 2.5-V to 6.0-V Input Voltage
• 0.8-V to V_IN Adjustable Output Voltage
• 1.8-V and 3.3-V Fixed Output Voltage
• ±1% Output Voltage Accuracy
• Hiccup Short Circuit Protection
• Programmable Soft Startup
• Output Voltage Tracking
• Selectable Switching Frequency
• 100% Duty Cycle for Lowest Dropout
• Output Discharge
• Power Good Output
• Thermal Shutdown Protection
• -40°C to 125°C Operating Junction Temperature
• Available in 2-mm x 2-mm VQFN Package
2 Applications
• Industrial Applications
• Programmable Logic Controllers (PLCs)
• Point of Load (POL) Regulators
• Solid State Drives (SSDs)
3 Description
The TPS62097 device is a synchronous step-down
converter optimized for high efficiency and noise
critical applications. The devices focus on high
efficiency conversion over a wide output current
range. At medium to heavy loads, the converter
operates in PWM mode and automatically enters
Power Save Mode operation at light load. The
switching frequency is selectable in the range of 1.5
MHz to 2.5 MHz by an external resistor. iDCS-Control
is able to be operated in forced PWM mode for low
noise operation with a fixed switching frequency.
To address the requirements of system power rails,
the internal compensation circuit allows a large
selection of external output capacitor values in
excess of 150 µF. To control the inrush current during
the startup, the device provides a programmable soft
startup by an external capacitor connected to the
SS/TR pin. The SS/TR pin is also used in voltage
tracking configurations. The device integrates short
circuit protection, power good and thermal shutdown
features. The device is available in a 2-mm x 2-mm
VQFN package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62097
TPS6209718
VQFN (11)
2.0 mm x 2.0 mm
TPS6209733
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1.8-V Output, PWM/PSM Mode Application
V_IN
2.5V to 6.0V
C1
10µF
C3
10nF
TPS6209718
PVIN
SW
AVIN VOS
EN
SS/TR
FB
MODE PG
AGND PGND
L1
1.0µH
V_IN
R3
100k
C2
22µF
V_OUT
1.8V/2A
POWER GOOD
1.8-V Output, PWM/PSM Mode Efficiency
100
90
80
70
60
1m
10m
100m
Load (A)
V_IN = 2.7 V
V_IN = 3.3 V
V_IN = 4.2 V
V_IN = 5.0 V
1
5
D003
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.