TPS63027 Series

High Efficiency 4.5A Switch Single-Inductor Buck-Boost Converter

Catalog

High Efficiency 4.5A Switch Single-Inductor Buck-Boost Converter

Part	Package / Case	Voltage - Output (Min/Fixed)	Frequency - Switching	Number of Outputs	Supplier Device Package	Topology	Output Type	Output Configuration	Mounting Type	Voltage - Output (Max) [Max]	Function	Synchronous Rectifier	Voltage - Input (Max) [Max]	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Min) [Min]	Main Purpose	Board Type	Outputs and Type	Outputs and Type	Supplied Contents	Regulator Topology	Voltage - Output	Voltage - Input [Min]	Voltage - Input [Max]	Utilized IC / Part
Texas Instruments TPS63027YFFR	25-UFBGA DSBGA	1 V	2.5 MHz	1	25-DSBGA	Buck-Boost	1.81 mOhm	Positive	Surface Mount	5.5 V	Step-Up/Step-Down		5.5 V	2 A	85 °C	-40 °C	2.3 V
Texas Instruments TPS63027EVM-870			2.5 MHz											2 A				DC/DC Step Up or Down	Fully Populated	Non-Isolated	1	Board(s)	Buck-Boost	3.3 V	2.3 V	5.5 V	TPS63027

Catalog

High Efficiency 4.5A Switch Single-Inductor Buck-Boost Converter

Key Features

• Real Buck or Boost Operation with Automatic and Seamless Transition Between Buck and Boost Operation2.3 V to 5.5 V Input Voltage Range1.0V to 5.5V Output Voltage Range2 A Continuous Output Current : VIN≥ 2.5 V, VOUT= 3.5 VEfficiency up to 96%2.5MHz Typical Switching Frequency35-µA Operating Quiescent CurrentIntegrated Soft StartPower Save ModeTrue Shutdown FunctionOutput Capacitor Discharge FunctionOver-Temperature Protection and Over-Current ProtectionWide Capacitance SelectionSmall 2.1 mm × 2.1 mm, 25-pin WCSPReal Buck or Boost Operation with Automatic and Seamless Transition Between Buck and Boost Operation2.3 V to 5.5 V Input Voltage Range1.0V to 5.5V Output Voltage Range2 A Continuous Output Current : VIN≥ 2.5 V, VOUT= 3.5 VEfficiency up to 96%2.5MHz Typical Switching Frequency35-µA Operating Quiescent CurrentIntegrated Soft StartPower Save ModeTrue Shutdown FunctionOutput Capacitor Discharge FunctionOver-Temperature Protection and Over-Current ProtectionWide Capacitance SelectionSmall 2.1 mm × 2.1 mm, 25-pin WCSP

Description

The TPS63027 is a high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2 A in boost mode and as high as 4 A in buck mode. The maximum average current in the switches is limited to a typical value of 4.5 A. The TPS63027 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 25-pin WCSP package measuring 2.1 mm × 2.1 mm. The TPS63027 is a high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2 A in boost mode and as high as 4 A in buck mode. The maximum average current in the switches is limited to a typical value of 4.5 A. The TPS63027 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 25-pin WCSP package measuring 2.1 mm × 2.1 mm.