TPS65320D-Q1 Series

Automotive 3.6V to 36V, 3.2A buck converter with auto-sourced 280mA LDO regulator

Catalog

Automotive 3.6V to 36V, 3.2A buck converter with auto-sourced 280mA LDO regulator

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Voltage/Current - Output 2 [Max]	Voltage/Current - Output 2	Voltage/Current - Output 2 [Min]	Number of Outputs	Qualification	Topology	Voltage/Current - Output 1 [Max] [custom]	Voltage/Current - Output 1 [custom]	Voltage/Current - Output 1 [Min] [custom]	Package / Case	Package / Case [y]	Package / Case [x]	Supplier Device Package	Grade	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Board Type	Voltage - Input [Min]	Voltage - Input [Max]	Outputs and Type	Outputs and Type	Current - Output	Frequency - Switching	Main Purpose	Utilized IC / Part	Regulator Topology	Voltage - Output	Supplied Contents
Texas Instruments TPS65320CQPWPRQ1	2.5 MHz	100 kHz	-40 °C	125 °C	5.5 V	280 mA	1.1 V	2	AEC-Q100	Linear (LDO) (1) Step-Down (Buck) (1)	20 V	3.2 A	1.1 V	14-PowerTSSOP	4.4 mm	0.173 in	14-HTSSOP	Automotive	Surface Mount	3.6 V	36 V
Texas Instruments TPS65320EVM																						Fully Populated	3.6 V	40 V	2	Non-Isolated	3.2 A 280 mA	2.1 MHz 110 kHz 400 kHz	DC/DC Step Down with LDO	TPS65320	Buck	3.3 V 5 V	Board(s)
Texas Instruments TPS65320DQPWPRQ1	2.5 MHz	100 kHz	-40 °C	125 °C	5.5 V	280 mA	1.1 V	2	AEC-Q100	Linear (LDO) (1) Step-Down (Buck) (1)	20 V	3.2 A	1.1 V	14-PowerTSSOP	4.4 mm	0.173 in	14-HTSSOP	Automotive	Surface Mount	3.6 V	36 V
Texas Instruments TPS65320BQPWPRQ1	2.5 MHz	100 kHz	-40 °C	125 °C	5.5 V	280 mA	1.1 V	2	AEC-Q100	Linear (LDO) (1) Step-Down (Buck) (1)	20 V	3.2 A	1.1 V	14-PowerTSSOP	4.4 mm	0.173 in	14-HTSSOP	Automotive	Surface Mount	3.6 V	40 VDC
Texas Instruments TPS65320C-EVM																						Fully Populated	3.6 V	40 V	2	Non-Isolated	3.2 A 280 mA	2.1 MHz 110 kHz 400 kHz	DC/DC Step Down with LDO	TPS65320C-Q1	Buck	3.3 V 5 V	Board(s)
Texas Instruments TPS65320QPWPRQ1	2.5 MHz	100 kHz	-40 °C	125 °C	5.5 V	280 mA	1.1 V	2	AEC-Q100	Linear (LDO) (1) Step-Down (Buck) (1)	20 V	3.2 A	1.1 V	14-PowerTSSOP	4.4 mm	0.173 in	14-HTSSOP	Automotive	Surface Mount	3.6 V	40 VDC

Catalog

Automotive 3.6V to 36V, 3.2A buck converter with auto-sourced 280mA LDO regulator

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 DC-DC ConverterInput Range of 3.6 V to 36 V250-mΩ High-Side MOSFETMaximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 VAdjustable Switching Frequency 100 kHz to 2.5 MHzSynchronizes to External ClockHigh Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control SchemeMaximum 140-µA Operating Quiescent CurrentOne Low-Dropout Voltage (LDO) RegulatorInput Range of 3 V to 20 V, With Auto-Source to Balance Efficiency and Lower Standby Current280-mA Current Capability With Typical 35-µA Quiescent Current in No-Load ConditionPower-Good Output (Push-Pull)Low-Dropout Voltage of 300 mV atIO= 200 mA (Typical)Overcurrent Protection for Both RegulatorsOvertemperature Protection14-Pin HTSSOP Package With PowerPAD™ Integrated Circuit PackageQualified 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 DC-DC ConverterInput Range of 3.6 V to 36 V250-mΩ High-Side MOSFETMaximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 VAdjustable Switching Frequency 100 kHz to 2.5 MHzSynchronizes to External ClockHigh Efficiency at Light Loads With Pulse-Skipping Eco-mode™ Control SchemeMaximum 140-µA Operating Quiescent CurrentOne Low-Dropout Voltage (LDO) RegulatorInput Range of 3 V to 20 V, With Auto-Source to Balance Efficiency and Lower Standby Current280-mA Current Capability With Typical 35-µA Quiescent Current in No-Load ConditionPower-Good Output (Push-Pull)Low-Dropout Voltage of 300 mV atIO= 200 mA (Typical)Overcurrent Protection for Both RegulatorsOvertemperature Protection14-Pin HTSSOP Package With PowerPAD™ Integrated Circuit Package

Description

The TPS65320D-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET. The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET with an active-low, push-pull reset output pin. The input supply of the LDO regulator auto-source from the output of the buck regulator when it is in operation. Low-voltage tracking feature enables TPS65320D-Q1 to track the input supply during cold-crank conditions. The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit 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 maximum 140 µA. The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low. The TPS65320D-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET. The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET with an active-low, push-pull reset output pin. The input supply of the LDO regulator auto-source from the output of the buck regulator when it is in operation. Low-voltage tracking feature enables TPS65320D-Q1 to track the input supply during cold-crank conditions. The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit 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 maximum 140 µA. The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.