TPS54228 Series

4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-mode™

Catalog

4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-mode™

Part	Voltage - Output (Min/Fixed)	Package / Case [y]	Package / Case [x]	Package / Case	Mounting Type	Voltage - Output (Max) [Max]	Number of Outputs	Voltage - Input (Min) [Min]	Frequency - Switching	Voltage - Input (Max) [Max]	Topology	Function	Output Configuration	Supplier Device Package	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output	Voltage - Output	Board Type	Main Purpose	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Regulator Topology	Outputs and Type	Outputs and Type	Utilized IC / Part
Texas Instruments TPS54228DDA	0.76 V	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	7 V	1	4.5 V	700 kHz	18 V	Buck	Step-Down	Positive	8-SO PowerPad	Adjustable	85 °C	-40 °C	2 A
Texas Instruments TPS54228DRCT	0.76 V			10-VFDFN Exposed Pad	Surface Mount	7 V	1	4.5 V	700 kHz	18 V	Buck	Step-Down	Positive	10-VSON (3x3)	Adjustable	85 °C	-40 °C	2 A
Texas Instruments TPS54228DDAR	0.76 V	3.9 mm	0.154 in	8-PowerSOIC	Surface Mount	7 V	1	4.5 V	700 kHz	18 V	Buck	Step-Down	Positive	8-SO PowerPad	Adjustable	85 °C	-40 °C	2 A
Texas Instruments TPS54228D	0.76 V	3.9 mm	0.154 in	8-SOIC	Surface Mount	7 V	1	4.5 V	700 kHz	18 V	Buck	Step-Down	Positive	8-SOIC	Adjustable	85 °C	-40 °C	2 A
Texas Instruments TPS54228EVM-686									700 kHz									2 A	1.05 V	Fully Populated	DC/DC Step Down	Board(s)	18 V	4.5 V	Buck	Non-Isolated	1	TPS54228
Texas Instruments TPS54228DRCR	0.76 V			10-VFDFN Exposed Pad	Surface Mount	7 V	1	4.5 V	700 kHz	18 V	Buck	Step-Down	Positive	10-VSON (3x3)	Adjustable	85 °C	-40 °C	2 A

Catalog

4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-mode™

Key Features

• D-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VINInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 155 mΩ (High-Side) and 108 mΩ (Low-Side)High Efficiency, Less than 10 µA at ShutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPrebiased Soft Start700-kHz Switching Frequency (fSW)Cycle-by-Cycle Overcurrent LimitAuto-Skip Eco-Mode™ for High Efficiency at Light LoadD-CAP2™ Mode Enables Fast Transient ResponseLow Output Ripple and Allows Ceramic Output CapacitorWide VINInput Voltage Range: 4.5 V to 18 VOutput Voltage Range: 0.76 V to 7 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 155 mΩ (High-Side) and 108 mΩ (Low-Side)High Efficiency, Less than 10 µA at ShutdownHigh Initial Bandgap Reference AccuracyAdjustable Soft StartPrebiased Soft Start700-kHz Switching Frequency (fSW)Cycle-by-Cycle Overcurrent LimitAuto-Skip Eco-Mode™ for High Efficiency at Light Load

Description

The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C. The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.