TPS65276V Series

4.5-V to 18-V Input, Dual (6-A and 3.5-A) Synchronous Step-Down Converter with I2C Control

Catalog

4.5-V to 18-V Input, Dual (6-A and 3.5-A) Synchronous Step-Down Converter with I2C Control

Part	Supplier Device Package	Voltage - Output (Min/Fixed)	Topology	Number of Outputs	Voltage - Input (Min) [Min]	Output Type	Voltage - Input (Max) [Max]	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Frequency - Switching [Min]	Frequency - Switching [Max]	Package / Case	Package / Case [x]	Package / Case [y]	Mounting Type	Current - Output	Function	Voltage - Output (Max) [Max]	Regulator Topology	Frequency - Switching	Supplied Contents	Outputs and Type	Outputs and Type	Utilized IC / Part	Main Purpose	Voltage - Output	Voltage - Input [Max]	Voltage - Input [Min]	Board Type
Texas Instruments TPS65276VDAPR	32-HTSSOP	0.68 V	Buck	2	4.5 V	Programmable	18 V	Positive	85 °C	-40 °C	200 kHz	1.6 MHz	32-PowerTSSOP	0.24 in	6.1 mm	Surface Mount	3.5 A 6 A	Step-Down	1.95 V
Texas Instruments TPS65276VRHHR	36-VQFN (6x6)	0.68 V	Buck	2	4.5 V	Programmable	18 V	Positive	85 °C	-40 °C	200 kHz	1.6 MHz	36-VFQFN Exposed Pad			Surface Mount	3.5 A 6 A	Step-Down	1.95 V
Texas Instruments TPS65276EVM																	3.5 A 6 A			Buck	500 kHz	Board(s)	2	Non-Isolated	TPS65276	DC/DC Step Down	1.2 V 1.8 V	18 V	4.5 V	Fully Populated
Texas Instruments TPS65276VRHHT	36-VQFN (6x6)	0.68 V	Buck	2	4.5 V	Programmable	18 V	Positive	85 °C	-40 °C	200 kHz	1.6 MHz	36-VFQFN Exposed Pad			Surface Mount	3.5 A 6 A	Step-Down	1.95 V

Catalog

4.5-V to 18-V Input, Dual (6-A and 3.5-A) Synchronous Step-Down Converter with I2C Control

Key Features

• 4.5-V to 18-V Wide Input Voltage RangeI2C Controlled 7-Bits VID ProgrammableOutput Voltage from 0.68 V to 1.95 V with 10-mVSteps for Each Buck; Output Voltage Can DividerProgrammable Slew Rate Control for Output VoltageTransitionUp to 6-A Maximum Continuous Output Current inBuck 1 and 3.5-A in Buck 2I2C Compatible Interface With Standard Mode(100 kHz) and Fast Mode (400 kHz)I2C Read Back Power Good Status andDie Temperature WarningPulse Skipping Mode to Achieve High Efficiencyin Light LoadAdjustable Switching Frequency 200 kHz - 1.6 MHzSet by External ResistorDedicated Enable and Soft-Start for Each BuckPeak Current-Mode Control with Simple CompensationCircuitCycle-by-Cycle Over Current Protection180° Out-of-Phase Operation to Reduce InputCapacitance and Power Supply Induced NoiseOver Temperature ProtectionAvailable in 32-Pin Thermally Enhanced HTSSOP (DAP)and 36-Pin QFN 6-mm x 6-mm (RHH) Packages4.5-V to 18-V Wide Input Voltage RangeI2C Controlled 7-Bits VID ProgrammableOutput Voltage from 0.68 V to 1.95 V with 10-mVSteps for Each Buck; Output Voltage Can DividerProgrammable Slew Rate Control for Output VoltageTransitionUp to 6-A Maximum Continuous Output Current inBuck 1 and 3.5-A in Buck 2I2C Compatible Interface With Standard Mode(100 kHz) and Fast Mode (400 kHz)I2C Read Back Power Good Status andDie Temperature WarningPulse Skipping Mode to Achieve High Efficiencyin Light LoadAdjustable Switching Frequency 200 kHz - 1.6 MHzSet by External ResistorDedicated Enable and Soft-Start for Each BuckPeak Current-Mode Control with Simple CompensationCircuitCycle-by-Cycle Over Current Protection180° Out-of-Phase Operation to Reduce InputCapacitance and Power Supply Induced NoiseOver Temperature ProtectionAvailable in 32-Pin Thermally Enhanced HTSSOP (DAP)and 36-Pin QFN 6-mm x 6-mm (RHH) Packages

Description

TPS65276V is a monolithic dual synchronous buck converter with wide 4.5V to 18V operating input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode control is designed to simplify its application while giving the designers options to optimize their usage according to the target applications. Each buck converter in TPS65276V has external feedback resistors that can be used for setting the initial start up voltage. The feedback voltage reference for this start-up option is 0.6 V. Once the VID DAC is updated via the I2C, the buck converter switches feedback resistors from external to internal. The output voltage in each buck can be programmable from 0.68 V to 1.95 V in 10-mV steps with I2C Controlled 7-Bits VID. Each buck converter in TPS65276V can also be I2C controlled for enabling/disabling output voltage, setting the pulse skipping mode and reading the power good status and die temperature warning. The switching frequency of the converters can be set from 200 kHz to 1.6 MHz with an external resistor. Two converters have clock signal with 180° out-of-phase. TPS65276V features dedicated enable pin when I2C interface is not used. Independent soft-start pin provides flexibility in power up programmability. Constant frequency peak current mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle over current protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions. Low side reverse over current protection also prevents excessive sinking current from damaging the converter. TPS65273V also features a light load pulse skipping mode (PSM) that can be controlled by I2C or MODE pin configuration. The PSM mode allows a power loss reduction on the input power supplied to the system to achieve high efficiency at light loading. The TPS65273V is available in a 32-pin thermally enhanced HTSSOP (DAP) package and 36-pin QFN 6-mm × 6-mm (RHH) package. TPS65276V is a monolithic dual synchronous buck converter with wide 4.5V to 18V operating input voltage range that encompassed most intermediate bus voltage operating off 5-, 9-, 12- or 15-V power bus or battery. The converter with constant frequency peak current mode control is designed to simplify its application while giving the designers options to optimize their usage according to the target applications. Each buck converter in TPS65276V has external feedback resistors that can be used for setting the initial start up voltage. The feedback voltage reference for this start-up option is 0.6 V. Once the VID DAC is updated via the I2C, the buck converter switches feedback resistors from external to internal. The output voltage in each buck can be programmable from 0.68 V to 1.95 V in 10-mV steps with I2C Controlled 7-Bits VID. Each buck converter in TPS65276V can also be I2C controlled for enabling/disabling output voltage, setting the pulse skipping mode and reading the power good status and die temperature warning. The switching frequency of the converters can be set from 200 kHz to 1.6 MHz with an external resistor. Two converters have clock signal with 180° out-of-phase. TPS65276V features dedicated enable pin when I2C interface is not used. Independent soft-start pin provides flexibility in power up programmability. Constant frequency peak current mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle over current protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions. Low side reverse over current protection also prevents excessive sinking current from damaging the converter. TPS65273V also features a light load pulse skipping mode (PSM) that can be controlled by I2C or MODE pin configuration. The PSM mode allows a power loss reduction on the input power supplied to the system to achieve high efficiency at light loading. The TPS65273V is available in a 32-pin thermally enhanced HTSSOP (DAP) package and 36-pin QFN 6-mm × 6-mm (RHH) package.