TPS40090-Q1 Series

Automotive 4.5V to 15V Multiphase Synchronous Buck Controller

Catalog

Automotive 4.5V to 15V Multiphase Synchronous Buck Controller

Part	Function	Supplier Device Package	Frequency - Switching [Max]	Frequency - Switching [Min]	Control Features	Duty Cycle (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Topology	Output Phases	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Number of Outputs	Output Type	Output Configuration	Package / Case	Package / Case	Utilized IC / Part	Voltage - Output	Voltage - Input [Min]	Voltage - Input [Max]	Board Type	Current - Output	Outputs and Type	Outputs and Type	Main Purpose	Regulator Topology	Supplied Contents	Grade	Qualification
Texas Instruments TPS40090PWR	Step-Down	24-TSSOP	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	85 °C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	24-TSSOP	0.173 in 4.4 mm
Texas Instruments TPS40090RHDR	Step-Down	28-VQFN (5x5)	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	85 °C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	28-VFQFN Exposed Pad
Texas Instruments TPS40090RHDT	Step-Down	28-VQFN (5x5)	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	85 °C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	28-VFQFN Exposed Pad
Texas Instruments TPS40090PWG4	Step-Down	24-TSSOP	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	85 °C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	24-TSSOP	0.173 in 4.4 mm
Texas Instruments TPS40090EVM-001																			TPS40090	1.5 V	10.5 V	14.5 V	Fully Populated	100 A	Non-Isolated	1	DC/DC Step Down	Buck	Board(s)
Texas Instruments TPS40090PW	Step-Down	24-TSSOP	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	85 °C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	24-TSSOP	0.173 in 4.4 mm
Texas Instruments TPS40090QPWRQ1	Step-Down	24-TSSOP	1.2 MHz	100 kHz	Current Limit Enable Frequency Control Power Good Soft Start	87.5 %	125 ¯C	-40 °C	Surface Mount	Buck	4	15 V	4.5 V	4	PWM Signal	Positive	24-TSSOP	0.173 in 4.4 mm												Automotive	AEC-Q100

Catalog

Automotive 4.5V to 15V Multiphase Synchronous Buck Controller

Key Features

• Two-, Three-, or Four-Phase Operation5-V to 15-V Operating RangeProgrammable Switching Frequency Up to 1-MHz/PhaseCurrent Mode Control With Forced Current Sharing(1)1% Internal 0.7-V ReferenceResistive Divider Set Output VoltageTrue Remote Sensing Differential AmplifierResistive or DCR Current SensingCurrent Sense Fault ProtectionProgrammable Load LineCompatible with UCC37222 Predictive Gate Drive™ Technology Drivers24-Pin Space-Saving TSSOP Package28-Pin QFN PackageTPS40090: Binary OutputsTPS40091: 3-State OutputsAPPLICATIONSInternet ServersNetwork EquipmentTelecommunications EquipmentDC Power Distributed Systems(1)Patent pending.Predictive Gate Drive is a trademark of Texas Instruments.Two-, Three-, or Four-Phase Operation5-V to 15-V Operating RangeProgrammable Switching Frequency Up to 1-MHz/PhaseCurrent Mode Control With Forced Current Sharing(1)1% Internal 0.7-V ReferenceResistive Divider Set Output VoltageTrue Remote Sensing Differential AmplifierResistive or DCR Current SensingCurrent Sense Fault ProtectionProgrammable Load LineCompatible with UCC37222 Predictive Gate Drive™ Technology Drivers24-Pin Space-Saving TSSOP Package28-Pin QFN PackageTPS40090: Binary OutputsTPS40091: 3-State OutputsAPPLICATIONSInternet ServersNetwork EquipmentTelecommunications EquipmentDC Power Distributed Systems(1)Patent pending.Predictive Gate Drive is a trademark of Texas Instruments.

Description

The TPS40090 is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency. Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180° out of phase, a three-phase design operates 120° out of phase, and a four-phase design operates 90° out of phase, as shown in Figure 1. The number of phases is programmed by connecting the deactivated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be deactivated. The TPS40090 uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed in series with output inductors or, for improved efficiency, by using the DCR (direct current resistance) of the filter inductors. The latter method involves generation of a current proportional signal with an R-C circuit (shown in Figure 11). The R-C values are selected by matching the time constants of the R-C circuit and the inductor; R-C = L/DCR. With either current sense method, the current signal is amplified and superimposed on the amplified voltage error signal to provide current mode PWM control. An output voltage droop can be programmed to improve the transient window and reduce size of the output filter. Other features include a single voltage operation, a true differential sense amplifier, a programmable current limit, soft-start, and a power good indicator. The TPS40090 is a two-, three-, or four-phase programmable synchronous buck controller that is optimized for low-voltage, high-current applications powered by a 5-V to 15-V distributed supply. A multi-phase converter offers several advantages over a single power stage including lower current ripple on the input and output capacitors, faster transient response to load steps, improved power handling capabilities, and higher system efficiency. Each phase can be operated at a switching frequency up to 1-MHz, resulting in an effective ripple frequency of up to 4-MHz at the input and the output in a four-phase application. A two-phase design operates 180° out of phase, a three-phase design operates 120° out of phase, and a four-phase design operates 90° out of phase, as shown in Figure 1. The number of phases is programmed by connecting the deactivated phase PWM output to the output of the internal 5-V LDO. In two-phase operation the even phase outputs should be deactivated. The TPS40090 uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed in series with output inductors or, for improved efficiency, by using the DCR (direct current resistance) of the filter inductors. The latter method involves generation of a current proportional signal with an R-C circuit (shown in Figure 11). The R-C values are selected by matching the time constants of the R-C circuit and the inductor; R-C = L/DCR. With either current sense method, the current signal is amplified and superimposed on the amplified voltage error signal to provide current mode PWM control. An output voltage droop can be programmed to improve the transient window and reduce size of the output filter. Other features include a single voltage operation, a true differential sense amplifier, a programmable current limit, soft-start, and a power good indicator.