TPS65279 Series
4.5-V to 18-V Input, Dual 5-A Synchronous Step-Down Converter
Manufacturer: Texas Instruments
Catalog(4 parts)
| Part | Mounting Type | Function | Package / Case | Package / Case▲▼ | Voltage - Input (Min)▲▼ | Voltage - Input (Max)▲▼ | Topology | Voltage - Output (Min/Fixed)▲▼ | Synchronous Rectifier▲▼ | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Number of Outputs▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Output (Max)▲▼ | Supplier Device Package | Output Configuration | Current - Output▲▼ | Output Type | Board Type | Outputs and Type▲▼ | Outputs and Type | Supplied Contents | Utilized IC / Part | Main Purpose | Contents | Frequency - Switching▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ | Voltage - Output▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS65279VDAPRBuck Switching Regulator IC Positive Adjustable (Programmable) 0.68V 2 Output 5A 32-PowerTSSOP (0.240", 6.10mm Width) | Surface Mount | Step-Down | 32-PowerTSSOP | 0.006095999851822853 m, 0.006099999882280827 m | 4.5 V | 18 V | Buck | 0.6800000071525574 V | 1600000 Hz | 200000 Hz | 2 ul | 85 °C | -40 °C | 1.950000047683716 V | 32-HTSSOP | Positive | 5 A | Adjustable (Programmable) | ||||||||||||
5 A | Fully Populated | 2 ul | 2 Non-Isolated Outputs, Non-Isolated | Board(s) | TPS65279 | DC/DC, Step Down | Board(s) | 500000 Hz | 18 V | 4.5 V | 1.2000000476837158 V, 1.7999999523162842 V | |||||||||||||||||||
Texas Instruments TPS65279DAPBuck Switching Regulator IC Positive Adjustable 0.6V 2 Output 5A 32-PowerTSSOP (0.240", 6.10mm Width) | Surface Mount | Step-Down | 32-PowerTSSOP | 0.006095999851822853 m, 0.006099999882280827 m | 4.5 V | 18 V | Buck | 0.6000000238418579 V | 1600000 Hz | 200000 Hz | 2 ul | 125 °C | -40 °C | 32-HTSSOP | Positive | 5 A | Adjustable | |||||||||||||
Texas Instruments TPS65279RHHRBuck Switching Regulator IC Positive Adjustable 0.6V 2 Output 5A 36-VFQFN Exposed Pad | Surface Mount | Step-Down | 36-VFQFN Exposed Pad | 4.5 V | 18 V | Buck | 0.6000000238418579 V | 1600000 Hz | 200000 Hz | 2 ul | 125 °C | -40 °C | 36-VQFN (6x6) | Positive | 5 A | Adjustable |
Key Features
• 4.5-V to 18-V Wide Input Voltage RangeProgrammable Slew Rate Control for OutputVoltage TransitionUp to 5-A Maximum Continuous Output Current inBuck 1 and Buck 2Buck 1 and Buck 2 can be Paralleled to Deliver upto 10-A CurrentPulse Skipping Mode to Achieve High Efficiency inLight LoadAdjustable Switching Frequency200 kHz to 1.6 MHz Set by External ResistorDedicated Enable and Soft-Start for Each BuckPeak Current-Mode Control With SimpleCompensation CircuitCycle-by-Cycle Overcurrent 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 VQFN 6-mm × 6-mm (RHH)Packages4.5-V to 18-V Wide Input Voltage RangeProgrammable Slew Rate Control for OutputVoltage TransitionUp to 5-A Maximum Continuous Output Current inBuck 1 and Buck 2Buck 1 and Buck 2 can be Paralleled to Deliver upto 10-A CurrentPulse Skipping Mode to Achieve High Efficiency inLight LoadAdjustable Switching Frequency200 kHz to 1.6 MHz Set by External ResistorDedicated Enable and Soft-Start for Each BuckPeak Current-Mode Control With SimpleCompensation CircuitCycle-by-Cycle Overcurrent 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 VQFN 6-mm × 6-mm (RHH)Packages
Description
AI
TPS65279 is a monolithic dual synchronous buck converter with wide 4.5-V to 18-V 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.
Two bucks in TPS65279 can be paralleled to delivery up to 10-A load current by using current sharing mode, connect ISHARE pin high. Two phase operation in current sharing reduces system filtering capacitance and inductance, alleviates EMI and improves output voltage ripple and noise.
TPS65279 features a dedicated enable pin. An 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 overcurrent protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions.
Low-side reverse overcurrent protection also prevents excessive sinking current from damaging the converter. TPS65279 also features a light load pulse skipping mode (PSM) controlled by MODE pin configuration.
The TPS65279 is available in a 32-pin thermally-enhanced HTSSOP (DAP) package and 36-pin 6-mm × 6-mm VQFN (RHH) package.
TPS65279 is a monolithic dual synchronous buck converter with wide 4.5-V to 18-V 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.
Two bucks in TPS65279 can be paralleled to delivery up to 10-A load current by using current sharing mode, connect ISHARE pin high. Two phase operation in current sharing reduces system filtering capacitance and inductance, alleviates EMI and improves output voltage ripple and noise.
TPS65279 features a dedicated enable pin. An 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 overcurrent protection and hiccup mode operation limit MOSFET power dissipation in short circuit or over loading fault conditions.
Low-side reverse overcurrent protection also prevents excessive sinking current from damaging the converter. TPS65279 also features a light load pulse skipping mode (PSM) controlled by MODE pin configuration.
The TPS65279 is available in a 32-pin thermally-enhanced HTSSOP (DAP) package and 36-pin 6-mm × 6-mm VQFN (RHH) package.