TPS40170 Series

4.5 V to 60 V Wide-Input Synchronous PWM Buck Controller

Catalog(3 parts)

Part	Voltage - Input▲▼	Voltage - Input▲▼	Voltage - Output▲▼	Supplied Contents	Board Type	Current - Output▲▼	Main Purpose	Utilized IC / Part	Outputs and Type	Outputs and Type▲▼	Frequency - Switching▲▼	Frequency - Switching▲▼	Frequency - Switching▲▼	Grade	Function	Duty Cycle (Max)▲▼	Output Configuration	Package / Case	Control Features	Output Type	Operating Temperature▲▼	Operating Temperature▲▼	Topology	Number of Outputs▲▼	Output Phases▲▼	Supplier Device Package	Mounting Type	Qualification	Voltage - Supply (Vcc/Vdd)▲▼	Voltage - Supply (Vcc/Vdd)▲▼
Texas Instruments TPS40170EVM-597 TPS40170 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board	36 V	10 V	5 V	Board(s)	Fully Populated	10 A	DC/DC, Step Down	TPS40170	Non-Isolated	1 ul	300000 Hz
Texas Instruments TPS40170EVM-578 TPS40170 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board	60 V	10 V	5 V	Board(s)	Fully Populated	6 A	DC/DC, Step Down	TPS40170	Non-Isolated	1 ul		600000 Hz	100000 Hz
Texas Instruments TPS40170QRGYRQ1 Buck Regulator Positive Output Step-Down DC-DC Controller IC 20-VQFN (3.5x4.5)												600000 Hz	100000 Hz	Automotive	Step-Down	0.949999988079071 ul	Positive	20-VFQFN Exposed Pad	Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking	Transistor Driver	125 °C	-40 °C	Buck	1 ul	1 ul	20-VQFN (3.5x4.5)	Surface Mount	AEC-Q100	60 V	4.5 V

Key Features

• New, similar products available:LM514575-V synchronous buck controller with wide input voltage and duty cycle rangesLM5146100-V synchronous buck DC/DC controller with wide duty-cycle rangeWide input voltage range from 4.5 V to 60 VReference voltage of 600 mV with 1% accuracyProgrammable UVLO and hysteresisVoltage mode control with voltage feed forwardProgrammable frequency between 100 kHz and 600 kHzBi-directional -frequency synchronization with primary and secondary optionLow-side FET sensing overcurrent protection and high-side FET sensing short-circuit protection with integrated thermal compensationProgrammable closed loop soft-startSupports pre-biased outputsThermal shutdown at 165°C with hysteresisVoltage trackingPower goodENABLE with 1-µA low current shutdownLDO output of 8.0 V and 3.3 VIntegrated Bootstrap Diode20-Pin 3.5 mm × 4.5 mm VQFN (RGY) packageCreate a Custom Design with WEBENCH ToolsNew, similar products available:LM514575-V synchronous buck controller with wide input voltage and duty cycle rangesLM5146100-V synchronous buck DC/DC controller with wide duty-cycle rangeWide input voltage range from 4.5 V to 60 VReference voltage of 600 mV with 1% accuracyProgrammable UVLO and hysteresisVoltage mode control with voltage feed forwardProgrammable frequency between 100 kHz and 600 kHzBi-directional -frequency synchronization with primary and secondary optionLow-side FET sensing overcurrent protection and high-side FET sensing short-circuit protection with integrated thermal compensationProgrammable closed loop soft-startSupports pre-biased outputsThermal shutdown at 165°C with hysteresisVoltage trackingPower goodENABLE with 1-µA low current shutdownLDO output of 8.0 V and 3.3 VIntegrated Bootstrap Diode20-Pin 3.5 mm × 4.5 mm VQFN (RGY) packageCreate a Custom Design with WEBENCH Tools

Description

TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power density, high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz. The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (UVLO), programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control. TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the primary and other downstream controllers acting as secondaries synchronized to the primary in-phase or 180° out-of-phase. Secondary controllers can be synchronized to an external clock within ±30% of the free-running switching frequency. New products (LM5145andLM5146) offer reduced BOM cost, higher efficiency, and reduced design size among many other features. TPS40170 is a full-featured, synchronous PWM buck controller that operates at an input voltage between 4.5 V and 60 V and is optimized for high-power density, high-reliability DC-DC converter applications. The controller implements voltage-mode control with input voltage feed-forward compensation that enables instant response to input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz. The TPS40170 has a complete set of system protection and monitoring features such as programmable undervoltage lockout (UVLO), programmable overcurrent protection (OCP) by sensing the low-side FET, selectable short-circuit protection (SCP) by sensing the high-side FET and thermal shutdown. The ENABLE pin allows for system shutdown in a low-current (1 µA typical) mode. The controller supports pre-biased output, provides an open-drain PGOOD signal, and has closed-loop soft-start, output voltage tracking and adaptive dead-time control. TPS40170 provides accurate output voltage regulation through 1% ensured accuracy. Additionally, the controller implements a novel scheme of bi-directional synchronization with one controller acting as the primary and other downstream controllers acting as secondaries synchronized to the primary in-phase or 180° out-of-phase. Secondary controllers can be synchronized to an external clock within ±30% of the free-running switching frequency. New products (LM5145andLM5146) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.