TPS65270 Series

2 Buck Converter with 4.5V to 16V Input Voltage, 2A/3A Output Current

Catalog(3 parts)

Part	Main Purpose	Voltage - Input▲▼	Voltage - Input▲▼	Outputs and Type▲▼	Outputs and Type	Frequency - Switching▲▼	Frequency - Switching▲▼	Utilized IC / Part	Supplied Contents	Current - Output▲▼	Voltage - Output▲▼	Board Type	Package / Case	Output Configuration	Topology	Operating Temperature▲▼	Operating Temperature▲▼	Voltage - Output (Min/Fixed)▲▼	Supplier Device Package	Output Type	Voltage - Input (Min)▲▼	Voltage - Input (Max)▲▼	Number of Outputs▲▼	Function	Mounting Type
Texas Instruments TPS65270EVM TPS65270 - DC/DC, Step Down 2, Non-Isolated Outputs Evaluation Board	DC/DC, Step Down	4.5 V	16 V	2 ul	Non-Isolated	300000 Hz	1400000 Hz	TPS65270	Board(s)	2 A, 3 A	1.2000000476837158 V, 1.7999999523162842 V	Fully Populated
Texas Instruments TPS65270RGER Buck Switching Regulator IC Positive Adjustable 0.8V 2 Output 2A, 3A 24-VFQFN Exposed Pad						300000 Hz	1400000 Hz			2 A, 3 A			24-VFQFN Exposed Pad	Positive	Buck	85 °C	-40 °C	0.800000011920929 V	24-VQFN (4x4)	Adjustable	4.5 V	18 V	2 ul	Step-Down	Surface Mount
Texas Instruments TPS65270RGET Buck Switching Regulator IC Positive Adjustable 0.8V 2 Output 2A, 3A 24-VFQFN Exposed Pad						300000 Hz	1400000 Hz			2 A, 3 A			24-VFQFN Exposed Pad	Positive	Buck	85 °C	-40 °C	0.800000011920929 V	24-VQFN (4x4)	Adjustable	4.5 V	18 V	2 ul	Step-Down	Surface Mount

Key Features

• Wide Input Supply Voltage Range: 4.5 V to 18 V0.8 V, ±1% Accuracy ReferenceUp to 2-A (Buck 1) and 3-A (Buck 2) Maximum Continuous Output Loading CurrentLow-Power Pulse Skipping Mode to Achieve High Light Load EfficiencyAdjustable Switching Frequency 300 kHz to 1.4 MHz Set by External ResistorStartup With a Prebiased Output VoltageDedicated Enable and Soft Start for Each BuckPeak Current-Mode Control With Simple Compensation CircuitCycle-by-Cycle Overcurrent Protection180° Out-of-Phase Operation to Reduce Input Capacitance and Power Supply Induced NoiseAvailable in 24-Lead Thermally Enhanced HTSSOP (PWP) and VQFN 4-mm × 4-mm (RGE) PackagesWide Input Supply Voltage Range: 4.5 V to 18 V0.8 V, ±1% Accuracy ReferenceUp to 2-A (Buck 1) and 3-A (Buck 2) Maximum Continuous Output Loading CurrentLow-Power Pulse Skipping Mode to Achieve High Light Load EfficiencyAdjustable Switching Frequency 300 kHz to 1.4 MHz Set by External ResistorStartup With a Prebiased Output VoltageDedicated Enable and Soft Start for Each BuckPeak Current-Mode Control With Simple Compensation CircuitCycle-by-Cycle Overcurrent Protection180° Out-of-Phase Operation to Reduce Input Capacitance and Power Supply Induced NoiseAvailable in 24-Lead Thermally Enhanced HTSSOP (PWP) and VQFN 4-mm × 4-mm (RGE) Packages

Description

The TPS65270 is a monolithic, dual synchronous buck regulator with a wide operating input voltage that can operate in 5-V, 9-V, 12-V, or 15-V bus voltages and battery chemistries. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application. The TPS65270 features a precision 0.8-V reference and can produce output voltages up to 15 V. Each converter features an enable pin that allows dedicated control of each channel that provides flexibility for power sequencing. Soft-start time in each channel can be adjusted by choosing different external capacitors. TPS65270 is also able to start up with a prebiased output. The converter begins switching when output voltage reaches the prebiased voltage. Constant frequency peak current-mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle overcurrent protection and hiccup mode operation limits MOSFET power dissipation in short-circuit or overloading fault conditions. Low-side reverse current protection also prevents excessive sinking current from damaging the converter. The switching frequency of the converters can be set from 300 KHz to 1.4 MHz with an external resistor. Two converters have 180° out-of-phase clock signals to minimize the input filter requirements and alleviate EMI and input capacitor requirements. TPS65270 also features a light-load pulse skipping mode (PSM). The PSM mode allows a power loss reduction on the input power supplied to the system at light loading in order to achieve light-load high efficiency. The TPS65270 is available in a 24-pin, thermally enhanced HTSSOP (PWP) package and 24-pin VQFN (RGE) package. The TPS65270 is a monolithic, dual synchronous buck regulator with a wide operating input voltage that can operate in 5-V, 9-V, 12-V, or 15-V bus voltages and battery chemistries. The converters are designed to simplify its application while giving the designer the option to optimize their usage according to the target application. The TPS65270 features a precision 0.8-V reference and can produce output voltages up to 15 V. Each converter features an enable pin that allows dedicated control of each channel that provides flexibility for power sequencing. Soft-start time in each channel can be adjusted by choosing different external capacitors. TPS65270 is also able to start up with a prebiased output. The converter begins switching when output voltage reaches the prebiased voltage. Constant frequency peak current-mode control simplifies the compensation and provides fast transient response. Cycle-by-cycle overcurrent protection and hiccup mode operation limits MOSFET power dissipation in short-circuit or overloading fault conditions. Low-side reverse current protection also prevents excessive sinking current from damaging the converter. The switching frequency of the converters can be set from 300 KHz to 1.4 MHz with an external resistor. Two converters have 180° out-of-phase clock signals to minimize the input filter requirements and alleviate EMI and input capacitor requirements. TPS65270 also features a light-load pulse skipping mode (PSM). The PSM mode allows a power loss reduction on the input power supplied to the system at light loading in order to achieve light-load high efficiency. The TPS65270 is available in a 24-pin, thermally enhanced HTSSOP (PWP) package and 24-pin VQFN (RGE) package.