TPS40322 Series

Dual Output or Two-phase Synchronous Buck Controller

Catalog

Dual Output or Two-phase Synchronous Buck Controller

Part	Board Type	Frequency - Switching	Supplied Contents	Outputs and Type	Outputs and Type	Voltage - Output	Current - Output	Main Purpose	Voltage - Input [Max]	Voltage - Input [Min]	Utilized IC / Part	Regulator Topology	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Type	Supplier Device Package	Frequency - Switching [Max]	Frequency - Switching [Min]	Function	Number of Outputs	Control Features	Package / Case	Output Phases	Topology	Mounting Type	Output Configuration
Texas Instruments TPS40322EVM-679	Fully Populated	500 kHz	Board(s)	2	Non-Isolated	1.2 V 1.8 V	10 A	DC/DC Step Down	15 V	8 V	TPS40322	Buck
Texas Instruments TPS40322EVM-074	Fully Populated	500 kHz	Board(s)	1	Non-Isolated	1.2 V	30 A	DC/DC Step Down	15 V	4.5 V	TPS40322	Buck
Texas Instruments TPS40322RHBR													-40 °C	125 ¯C	3 V	20 V	Transistor Driver	32-VQFN (5x5)	1 MHz	100 kHz	Step-Down	2	Current Limit Enable Frequency Control Phase Control Soft Start	32-VFQFN Exposed Pad	2	Buck	Surface Mount	Positive
Texas Instruments TPS40322RHBT													-40 °C	125 ¯C	3 V	20 V	Transistor Driver	32-VQFN (5x5)	1 MHz	100 kHz	Step-Down	2	Current Limit Enable Frequency Control Phase Control Soft Start	32-VFQFN Exposed Pad	2	Buck	Surface Mount	Positive

Catalog

Dual Output or Two-phase Synchronous Buck Controller

Key Features

• Dual-Output or Two-Phase Synchronous BuckController180° Out-of-Phase Reduces Input RippleInput Voltage Range: 3 V to 20 VOutput Voltage Range: 0.6 V to 5.6 VAdjustable Frequency: 100 kHz to 1 MHzBidirectional SYNC Pin With 0°/180° or 90°/270°Phase ShiftVoltage Mode Control With Input FeedforwardAccurate Current Sharing for Two-PhaseOperationIndividual Power Good OutputsIndividual Enable and Programmable Soft Start,With Pre-Bias Start-Up±0.5%, 600-mV ReferenceOutput UV/OV Protection and Input UndervoltageLockoutIndividual Overcurrent Limit SettingHiccup Overcurrent ProtectionAccurate Inductor DCR or Resistive CurrentSensingRemote Sense for Two-Phase ApplicationsInternal N-Channel FET DriversIntegrated Bootstrap SwitchesAvailable in 5-mm × 5-mm 32-Pin VQFN PackageDual-Output or Two-Phase Synchronous BuckController180° Out-of-Phase Reduces Input RippleInput Voltage Range: 3 V to 20 VOutput Voltage Range: 0.6 V to 5.6 VAdjustable Frequency: 100 kHz to 1 MHzBidirectional SYNC Pin With 0°/180° or 90°/270°Phase ShiftVoltage Mode Control With Input FeedforwardAccurate Current Sharing for Two-PhaseOperationIndividual Power Good OutputsIndividual Enable and Programmable Soft Start,With Pre-Bias Start-Up±0.5%, 600-mV ReferenceOutput UV/OV Protection and Input UndervoltageLockoutIndividual Overcurrent Limit SettingHiccup Overcurrent ProtectionAccurate Inductor DCR or Resistive CurrentSensingRemote Sense for Two-Phase ApplicationsInternal N-Channel FET DriversIntegrated Bootstrap SwitchesAvailable in 5-mm × 5-mm 32-Pin VQFN Package

Description

The TPS40322 device is a dual-output, synchronous buck controller. It can also be configured as a single-output, two-phase controller. The 180° out-of-phase operation reduces the input current ripple and extends the input capacitor lifetime. Bidirectional master and slave synchronization function provides evenly distributed phase shift for a four-output system that reduces input ripple further and attenuates the system noise. The wide input range can support 3.3-V, 5-V, and 12-V buses. The accurate reference voltage satisfies the precision voltage needed by ASICs and potentially reduces the output capacitance requirement. Separate PGOOD signals provide flexibility for system monitoring and sequencing. The two channels are independently controlled and each soft-start time is programmable. Voltage mode control is implemented to reduce noise sensitivity and also ensures low duty ratio conversion. The TPS40322 device is a dual-output, synchronous buck controller. It can also be configured as a single-output, two-phase controller. The 180° out-of-phase operation reduces the input current ripple and extends the input capacitor lifetime. Bidirectional master and slave synchronization function provides evenly distributed phase shift for a four-output system that reduces input ripple further and attenuates the system noise. The wide input range can support 3.3-V, 5-V, and 12-V buses. The accurate reference voltage satisfies the precision voltage needed by ASICs and potentially reduces the output capacitance requirement. Separate PGOOD signals provide flexibility for system monitoring and sequencing. The two channels are independently controlled and each soft-start time is programmable. Voltage mode control is implemented to reduce noise sensitivity and also ensures low duty ratio conversion.