TPS56628 Series

4.5-V to 18-V, 6-A synchronous buck converter with eco-mode

Catalog

4.5-V to 18-V, 6-A synchronous buck converter with eco-mode

Part	Current - Output	Voltage - Input (Max) [Max]	Supplier Device Package	Output Type	Number of Outputs	Function	Voltage - Input (Min) [Min]	Output Configuration	Package / Case [y]	Package / Case [x]	Package / Case	Topology	Frequency - Switching	Voltage - Output (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Regulator Topology	Utilized IC / Part	Main Purpose	Voltage - Output	Voltage - Input [Max]	Voltage - Input [Min]	Outputs and Type	Outputs and Type	Supplied Contents	Board Type
Texas Instruments TPS56628DDAR	6 A	18 V	8-SO PowerPad	Adjustable	1	Step-Down	4.5 V	Positive	3.9 mm	0.154 in	8-PowerSOIC	Buck	650 kHz	5.5 V	85 °C	-40 °C	Surface Mount
Texas Instruments TPS56628DDA	6 A	18 V	8-SO PowerPad	Adjustable	1	Step-Down	4.5 V	Positive	3.9 mm	0.154 in	8-PowerSOIC	Buck	650 kHz	5.5 V	85 °C	-40 °C	Surface Mount
Texas Instruments TPS56628EVM-534	6 A												650 kHz					Buck	TPS56628	DC/DC Step Down	1.05 V	18 V	4.5 V	Non-Isolated	1	Board(s)	Fully Populated

Catalog

4.5-V to 18-V, 6-A synchronous buck 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 5.5 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 36 mΩ (High Side) and 28 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyPre-Biased Soft Start650-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitAuto-Skip Eco-mode for High Efficiency at Light LoadPower Good OutputFixed Soft Start: 1.0 msD-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 5.5 VHighly Efficient Integrated FETs Optimizedfor Lower Duty Cycle Applications– 36 mΩ (High Side) and 28 mΩ (Low Side)High Efficiency, less than 10 µA at shutdownHigh Initial Bandgap Reference AccuracyPre-Biased Soft Start650-kHz Switching Frequency (fSW)Cycle By Cycle Over Current LimitAuto-Skip Eco-mode for High Efficiency at Light LoadPower Good OutputFixed Soft Start: 1.0 ms

Description

The TPS56628 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS56628 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 TPS56628 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 TPS56628 to maintain high efficiency during lighter load conditions. The TPS56628 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 5.5 V. The TPS56628 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C. The TPS56628 is an adaptive on-time D-CAP2 mode synchronous buck converter. The TPS56628 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 TPS56628 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 TPS56628 to maintain high efficiency during lighter load conditions. The TPS56628 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 5.5 V. The TPS56628 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.