Texas Instruments TPS61241 | Demoboard LAUNCHXL-F28P65X

Beschreibung

The TPS6124x device is a highly efficient synchronous step-up DC-DC converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-Polymer battery. The TPS6124x supports output currents up to 450 mA. The TPS61240 has an input valley current limit of 500 mA, and the TPS61241 has an input valley current of 600 mA.With an input voltage range of 2.3 V to 5.5 V, the device supports batteries with extended voltage range and are ideal to power portable applications like mobile phones and other portable equipment. The TPS6124x boost converter is based on a quasi-constant on-time valley current mode control scheme.The TPS6124x presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS6124x is shut down.During light loads the device will automatically pulse skip allowing maximum efficiency at lowest quiescent currents. In the shutdown mode, the current consumption is reduced to less than 1 µA.TPS6124x allows the use of small inductors and capacitors to achieve a small solution size. During shutdown, the load is completely disconnected from the battery. The TPS6124x is available in a 6-pin DSBGA and 2-mm × 2-mm WSON package

Eigenschaften

Efficiency > 90% at Nominal Operating ConditionsTotal DC Output Voltage Accuracy 5.0 V±2%Typical 30-µA Quiescent CurrentBest in Class Line and Load TransientWide VIN Range From 2.3 V to 5.5 VOutput Current up to 450 mAAutomatic PFM/PWM Mode TransitionLow Ripple Power Save Mode for ImprovedEfficiency at Light LoadsInternal Softstart, 250-μs Typical Start-Up Time3.5-MHz Typical Operating FrequencyLoad Disconnect During ShutdownCurrent Overload and Thermal ShutdownProtectionThree Surface-Mount External ComponentsRequired (One MLCC Inductor, Two CeramicCapacitors)Total Solution Size <13 mm2Available in a 6-Pin DSBGA and 2-mm × 2-mmWSON Package

Typische Anwendungen

• Air conditioner outdoor unit
• Solar power optimizer
• Textile machine
• Door operator drive control
• CNC control
• Industrial AC-DC
• Welding machine
• Central inverter

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers