TPS65320 Series
Automotive 3.6V to 36V, 3.2A Buck Converter with Auto-Sourced 280mA LDO Regulator
Manufacturer: Texas Instruments
Catalog(4 parts)
| Part | Qualification | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Package / Case▲▼ | Package / Case▲▼ | Package / Case | Voltage/Current - Output 1▲▼ | Voltage/Current - Output 1▲▼ | Voltage/Current - Output 1▲▼ | Mounting Type | Number of Outputs▲▼ | w/Supervisor▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Grade | w/Sequencer▲▼ | Voltage/Current - Output 2▲▼ | Voltage/Current - Output 2▲▼ | Voltage/Current - Output 2▲▼ | Supplier Device Package | w/LED Driver▲▼ | Topology | Main Purpose | Supplied Contents | Voltage - Output▲▼ | Frequency - Switching▲▼ | Board Type | Utilized IC / Part | Voltage - Input▲▼ | Voltage - Input▲▼ | Current - Output▲▼ | Outputs and Type▲▼ | Outputs and Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS65320CQPWPRQ1PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 100kHz ~ 2.5MHz 14-HTSSOP | AEC-Q100 | 100000 Hz | 2500000 Hz | 0.004399999976158142 m | 0.004394200164824724 m | 14-PowerTSSOP | 1.100000023841858 V | 3.200000047683716 A | 20 V | Surface Mount | 2 ul | -40 °C | 125 °C | 3.5999999046325684 V | 36 V | Automotive | 5.5 V | 0.2800000011920929 A | 1.100000023841858 V | 14-HTSSOP | Linear (LDO) (1), Step-Down (Buck) (1) | ||||||||||||||
Texas Instruments TPS65320EVMTPS65320 - DC/DC, Step Down with LDO 2, Non-Isolated Outputs Evaluation Board | DC/DC, Step Down with LDO | Board(s) | 3.299999952316284 V, 5 V | 110000 Hz, 400000 Hz, 2100000 Hz | Fully Populated | TPS65320 | 40 V | 3.5999999046325684 V | 0.2800000011920929 A, 3.200000047683716 A | 2 ul | Non-Isolated | ||||||||||||||||||||||||
Texas Instruments TPS65320DQPWPRQ1PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 100kHz ~ 2.5MHz 14-HTSSOP | AEC-Q100 | 100000 Hz | 2500000 Hz | 0.004399999976158142 m | 0.004394200164824724 m | 14-PowerTSSOP | 1.100000023841858 V | 3.200000047683716 A | 20 V | Surface Mount | 2 ul | -40 °C | 125 °C | 3.5999999046325684 V | 36 V | Automotive | 5.5 V | 0.2800000011920929 A | 1.100000023841858 V | 14-HTSSOP | Linear (LDO) (1), Step-Down (Buck) (1) | ||||||||||||||
Texas Instruments TPS65320BQPWPRQ1PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 100kHz ~ 2.5MHz 14-HTSSOP | AEC-Q100 | 100000 Hz | 2500000 Hz | 0.004399999976158142 m | 0.004394200164824724 m | 14-PowerTSSOP | 1.100000023841858 V | 3.200000047683716 A | 20 V | Surface Mount | 2 ul | -40 °C | 125 °C | 3.5999999046325684 V | 40 V | Automotive | 5.5 V | 0.2800000011920929 A | 1.100000023841858 V | 14-HTSSOP | Linear (LDO) (1), Step-Down (Buck) (1) |
Key Features
• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BOne High-VIN Step-Down Converter3.6- to 40-V Input Range250-mΩ High-Side MOSFET3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable100-kHz to 2.5-MHz Adjustable Switch-Mode FrequencyLess Than 140-µA Operating Quiescent CurrentOne Low-Dropout Voltage Regulator (LDO)280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load ConditionInput Supply Auto-Source to Balance Efficiency and Low Standby CurrentPower-Good Output (Push-Pull)Low-Dropout Voltage of 300 mV at IOUT= 200 mA (Typical)Overcurrent Protection for Both RegulatorsOvertemperature Protection14-Pin HTSSOP Package With PowerPAD PackageAll trademarks are the property of their respective owners.Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C4BOne High-VIN Step-Down Converter3.6- to 40-V Input Range250-mΩ High-Side MOSFET3.2-A Maximum Load Current, 1.1- to 20-V Output Adjustable100-kHz to 2.5-MHz Adjustable Switch-Mode FrequencyLess Than 140-µA Operating Quiescent CurrentOne Low-Dropout Voltage Regulator (LDO)280-mA Current Capability With 28-μA (Typical) Operating Quiescent Current in No-Load ConditionInput Supply Auto-Source to Balance Efficiency and Low Standby CurrentPower-Good Output (Push-Pull)Low-Dropout Voltage of 300 mV at IOUT= 200 mA (Typical)Overcurrent Protection for Both RegulatorsOvertemperature Protection14-Pin HTSSOP Package With PowerPAD PackageAll trademarks are the property of their respective owners.
Description
AI
The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.
The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.
The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.
The TPS65320-Q1 device is a combination of a 40-V, 3.2-A, DC-DC step-down converter and a low-dropout (LDO) regulator. The DC-DC step-down converter, referred to as the buck regulator, has an integrated high-side MOSFET. The LDO regulator also has an integrated MOSFET and a low-input supply current of 28-μA (typical) in a no-load condition. Furthermore, the LDO regulator has an active-low, push-pull reset output pin. To reduce heat, the input supply of the LDO regulator can auto-source from the input voltage to the output of the buck regulator. The low-voltage tracking feature can eliminate the need to use a boost converter during cold-crank conditions.
The buck regulator has a switching frequency range from 100 kHz to 2.5 MHz that provides a flexible design to fix system requirements. The external loop compensation allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input supply current to less than 140 μA.
The device has built-in protection features such as soft start, current limit, thermal sensing, and shutdown because of excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device at a too-low supply voltage.