SLVA339A Datasheet, PDF (3/9 Pages) Texas Instruments – High-Vin, High-Efficiency Power Solution Using DC/DC Converter With DVFS

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3 Features
The design uses the following high-efficiency dc/dc converters with integrated FETs.
INPUT VOLTAGE
OUTPUT VOLTAGES
Core 1.2 V at 600 mA
Fixed 1.2 V + VRTC at 251 mA
1.8 V at 230 mA
3.3 V at 115 mA
HIGH EFFICIENCY (With DVFS)
~12 V/3.3 V
TPS62353
TPS62232
TPS62231
TPS62111
Features
In the preceding table, VRTC is included in the STATIC12 (fixed 1.2-V) group.
TPS62353
• 88% efficiency at 3-MHz operation
• Output peak current up to 800 mA
• 3-MHz fixed frequency operation
• Best in class load and line transient
• ±2% PWM dc voltage accuracy
• Efficiency optimized Power-Save mode
• Transient optimized Power-Save mode
• Fixed 1.2-V output eliminates need for external voltage-setting resistors
• Available in a 10-pin QFN (3 × 3 mm) 12-pin NanoFree™ (CSP) packaging
TPS62231 and TPS62232
• 3-MHz switch frequency
• Up to 94% efficiency
• Output peak current up to 500 mA
• Small external output filter components (1 mH/4.7 mF)
• Small 1 × 1,5 × 0,6 mm 3 SON package
• Fixed 1.8-V and 1.2-V output, respectively, eliminates need for external voltage-setting resistors
TPS62111
• High-efficiency synchronous step-down converter with up to 95% efficiency
• Up to 1.5-A output current
• High efficiency over a wide load-current range due to PFM/PWM operation mode
• Fixed 3.3-V output eliminates need for external voltage-setting resistors
More information on the devices can be found in the data sheets.
• TPS62111, SLVS585
• TPS62231 and TPS62232, SLVS941
• TPS62353, SLVS540
SLVA339A – June 2009 – Revised May 2010
High-Vin, High-Efficiency Power Solution Using DC/DC Converters With DVFS
3
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