TPS40077 Series

4.5-V to 28-V, synchronous buck controller with voltage feed forward in HTSSOP package

Catalog

4.5-V to 28-V, synchronous buck controller with voltage feed forward in HTSSOP package

Part	Regulator Topology	Frequency - Switching	Voltage - Output	Outputs and Type	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Utilized IC / Part	Main Purpose	Supplied Contents	Current - Output	Board Type	Function	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case	Package / Case	Output Configuration	Number of Outputs	Supplier Device Package	Frequency - Switching [Max]	Output Phases	Output Type	Control Features	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Duty Cycle (Max) [Max]
Texas Instruments TPS40077EVM-001	Buck	300 kHz	1.8 V	Non-Isolated	1	16 V	8 V	TPS40077	DC/DC Step Down	Board(s)	10 A	Fully Populated
Texas Instruments TPS40077PWP													Step-Down	Buck	85 °C	-40 °C	Surface Mount	16-PowerTSSOP	0.173 in 4.4 mm Width	Positive	1	16-HTSSOP	1 MHz	1	Transistor Driver	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	93 %
Texas Instruments TPS40077PWPG4													Step-Down	Buck	85 °C	-40 °C	Surface Mount	16-PowerTSSOP	0.173 in 4.4 mm Width	Positive	1	16-HTSSOP	1 MHz	1	Transistor Driver	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	93 %
Texas Instruments TPS40077PWPR													Step-Down	Buck	85 °C	-40 °C	Surface Mount	16-PowerTSSOP	0.173 in 4.4 mm Width	Positive	1	16-HTSSOP	1 MHz	1	Transistor Driver	Current Limit Frequency Control Power Good Soft Start	4.5 V	28 V	93 %

Catalog

4.5-V to 28-V, synchronous buck controller with voltage feed forward in HTSSOP package

Key Features

• Operation Over 4.5-V to 28-V Input RangeProgrammable, Fixed-Frequency, up to 1-MHz, Voltage-Mode ControllerPredictive Gate-Drive Anti-Cross-Conduction Circuitry<1% Internal 700-mV ReferenceInternal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs16-Pin PowerPAD™ PackageThermal Shutdown ProtectionPre-Bias CompatiblePower-Stage Shutdown CapabilityProgrammable High-Side Sense Short-Circuit ProtectionOperation Over 4.5-V to 28-V Input RangeProgrammable, Fixed-Frequency, up to 1-MHz, Voltage-Mode ControllerPredictive Gate-Drive Anti-Cross-Conduction Circuitry<1% Internal 700-mV ReferenceInternal Gate-Drive Outputs for High-Side and Synchronous N-Channel MOSFETs16-Pin PowerPAD™ PackageThermal Shutdown ProtectionPre-Bias CompatiblePower-Stage Shutdown CapabilityProgrammable High-Side Sense Short-Circuit Protection

Description

The TPS40077 is a mid-voltage, wide-input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user-programmable functions, including soft start, undervoltage lockout (UVLO), operating frequency, voltage feed-forward, and high-side, FET-sensed, short-circuit protection. The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than the pre-bias voltage. Voltage feed-forward provides good response to input transients and provides a constant PWM gain over a wide input-voltage operating range to ease compensation requirements. Programmable short-circuit protection provides fault-current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 16-pin PowerPAD package gives good thermal performance and a compact footprint. The TPS40077 is a mid-voltage, wide-input (4.5-V to 28-V), synchronous, step-down controller, offering design flexibility for a variety of user-programmable functions, including soft start, undervoltage lockout (UVLO), operating frequency, voltage feed-forward, and high-side, FET-sensed, short-circuit protection. The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-loop soft start is greater than the pre-bias voltage. Voltage feed-forward provides good response to input transients and provides a constant PWM gain over a wide input-voltage operating range to ease compensation requirements. Programmable short-circuit protection provides fault-current limiting and hiccup recovery to minimize power dissipation with a shorted output. The 16-pin PowerPAD package gives good thermal performance and a compact footprint.