TPS40055-EP Series

Enhanced Product Wide Input Synchronous Buck Controller

Catalog

Enhanced Product Wide Input Synchronous Buck Controller

Part	Control Features	Frequency - Switching [Max]	Output Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Function	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Package / Case	Package / Case	Output Phases	Topology	Duty Cycle (Max) [Max]	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Supplied Contents	Main Purpose	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Current - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Board Type	Regulator Topology	Frequency - Switching
Texas Instruments TPS40055MPWPREP	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive	125 °C	-55 °C	1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP
Texas Instruments TPS40055PWPRG4	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive			1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP	85 °C	-40 °C
Texas Instruments TPS40055EVM-002																				Board(s)	DC/DC Step Down	10 V	40 V	5 V	3 A	Non-Isolated	1	TPS40055	Fully Populated	Buck	300 kHz
Texas Instruments TPS40055EVM-001																				Board(s)	DC/DC Step Down	10 V	14 V	1.8 V	15 A	Non-Isolated	1	TPS40055	Fully Populated	Buck	300 kHz
Texas Instruments TPS40055PWPG4	Current Limit Enable Frequency Control Soft Start	1 MHz	Transistor Driver	8 V	40 V	Step-Down	Positive			1	16-PowerTSSOP	0.173 in 4.4 mm Width	1	Buck	94 %	Surface Mount	16-HTSSOP	85 °C	-40 °C

Catalog

Enhanced Product Wide Input Synchronous Buck Controller

Key Features

• Operating Input Voltage 8 V to 40 VInput Voltage Feed-Forward Compensation< 1 % Internal 0.7-V ReferenceProgrammable Fixed-Frequency Up to 1-MHz Voltage Mode ControllerInternal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs16-Pin PowerPAD Package™ (ηJC= 25°C/W)Thermal ShutdownExternally SynchronizableProgrammable High-Side Sense Short-Circuit ProtectionProgrammable Closed-Loop Soft-StartTPS40055 Source/SinkSUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONSControlled BaselineOne Assembly/Test SiteOne Fabrication SiteAvailable in Military (–55°C/125°C) Temperature Range(1)Extended Product Life CycleExtended Product-Change NotificationProduct TraceabilityAPPLICATIONSPower ModulesNetworking/TelecomIndustrial/Servers(1)Additional temperature ranges available - contact factoryOperating Input Voltage 8 V to 40 VInput Voltage Feed-Forward Compensation< 1 % Internal 0.7-V ReferenceProgrammable Fixed-Frequency Up to 1-MHz Voltage Mode ControllerInternal Gate Drive Outputs for High-Side and Synchronous N-Channel MOSFETs16-Pin PowerPAD Package™ (ηJC= 25°C/W)Thermal ShutdownExternally SynchronizableProgrammable High-Side Sense Short-Circuit ProtectionProgrammable Closed-Loop Soft-StartTPS40055 Source/SinkSUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONSControlled BaselineOne Assembly/Test SiteOne Fabrication SiteAvailable in Military (–55°C/125°C) Temperature Range(1)Extended Product Life CycleExtended Product-Change NotificationProduct TraceabilityAPPLICATIONSPower ModulesNetworking/TelecomIndustrial/Servers(1)Additional temperature ranges available - contact factory

Description

The TPS40055 is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS40055 family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation. The TPS40055 are also synchronizable to an external supply. The TPS40055 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronousrectifier conduction. The TPS40055 uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range and fast response to input line transients with near constant gain with input variation which eases loop compensation. Theexternally programmable current limit provides pulse-by-pulse current limit, as well as a hiccup mode operation utilizing an internal fault counter for longer duration overloads. The TPS40055 is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS40055 family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation. The TPS40055 are also synchronizable to an external supply. The TPS40055 incorporates MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronousrectifier conduction. The TPS40055 uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range and fast response to input line transients with near constant gain with input variation which eases loop compensation. Theexternally programmable current limit provides pulse-by-pulse current limit, as well as a hiccup mode operation utilizing an internal fault counter for longer duration overloads.