TPS40170-Q1 Series

Automotive 4.5V to 60V Synchronous Buck Controller with Voltage Tracking

Catalog

Automotive 4.5V to 60V Synchronous Buck Controller with Voltage Tracking

Part	Supplied Contents	Utilized IC / Part	Current - Output	Frequency - Switching [Max]	Frequency - Switching [Min]	Board Type	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Main Purpose	Regulator Topology	Output Phases	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Topology	Qualification	Grade	Output Type	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Package / Case	Function	Duty Cycle (Max)	Number of Outputs	Supplier Device Package	Control Features
Texas Instruments TPS40170EVM-578	Board(s)	TPS40170	6 A	600 kHz	100 kHz	Fully Populated	Non-Isolated	1	10 V	60 V	5 V	DC/DC Step Down	Buck
Texas Instruments TPS40170QRGYRQ1				600 kHz	100 kHz									1	-40 °C	125 ¯C	Surface Mount	Buck	AEC-Q100	Automotive	Transistor Driver	Positive	4.5 V	60 V	20-VFQFN Exposed Pad	Step-Down	95 %	1	20-VQFN (3.5x4.5)	Current Limit Enable Frequency Control Power Good Soft Start Tracking
Texas Instruments TPS40170RGYR				600 kHz	100 kHz									1	-40 °C	125 ¯C	Surface Mount	Buck			Transistor Driver	Positive	4.5 V	60 V	20-VFQFN Exposed Pad	Step-Down	95 %	1	20-VQFN (3.5x4.5)	Current Limit Enable Frequency Control Power Good Soft Start Tracking
Texas Instruments TPS40170RGYT				600 kHz	100 kHz									1	-40 °C	125 ¯C	Surface Mount	Buck			Transistor Driver	Positive	4.5 V	60 V	20-VFQFN Exposed Pad	Step-Down	95 %	1	20-VQFN (3.5x4.5)	Current Limit Enable Frequency Control Power Good Soft Start Tracking

Catalog

Automotive 4.5V to 60V Synchronous Buck Controller with Voltage Tracking

Key Features

• New, similar products available:LM5145-Q175-V synchronous buck controller with wide input voltage and duty cycle rangesLM5146-Q1100-V synchronous buck DC/DC controller with wide duty-cycle rangeQualified for automotive applicationsAEC-Q100 qualified with the following resultsDevice temperature grade 1: –40°C to 125°C ambient operating temperature rangeDevice HBM ESD classification level 1CDevice CDM ESD classification level C4BWide-input voltage range from 4.5 V to 60 V600-mV reference voltage with 1% accuracyProgrammable UVLO and hysteresisVoltage-mode control with voltage feed-forwardProgrammable frequency between 100 kHz and 600 kHzBidirectional 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 shutdown8-V and 3.3-V LDO outputIntegrated bootstrap diode20-pin 4.5-mm × 3.5-mm VQFN (RGY) packageNew, similar products available:LM5145-Q175-V synchronous buck controller with wide input voltage and duty cycle rangesLM5146-Q1100-V synchronous buck DC/DC controller with wide duty-cycle rangeQualified for automotive applicationsAEC-Q100 qualified with the following resultsDevice temperature grade 1: –40°C to 125°C ambient operating temperature rangeDevice HBM ESD classification level 1CDevice CDM ESD classification level C4BWide-input voltage range from 4.5 V to 60 V600-mV reference voltage with 1% accuracyProgrammable UVLO and hysteresisVoltage-mode control with voltage feed-forwardProgrammable frequency between 100 kHz and 600 kHzBidirectional 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 shutdown8-V and 3.3-V LDO outputIntegrated bootstrap diode20-pin 4.5-mm × 3.5-mm VQFN (RGY) package

Description

The TPS40170-Q1 device 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 an input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz. The TPS40170-Q1 device has a complete set of system protection and monitoring features such as programmable 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. The TPS40170-Q1 device provides accurate output-voltage regulation within 1% accuracy. Additionally, the controller implements a novel scheme of bidirectional 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 (LM5145-Q1andLM5146-Q1) offer reduced BOM cost, higher efficiency, and reduced design size among many other features. The TPS40170-Q1 device 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 an input voltage change. The switching frequency is programmable from 100 kHz to 600 kHz. The TPS40170-Q1 device has a complete set of system protection and monitoring features such as programmable 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. The TPS40170-Q1 device provides accurate output-voltage regulation within 1% accuracy. Additionally, the controller implements a novel scheme of bidirectional 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 (LM5145-Q1andLM5146-Q1) offer reduced BOM cost, higher efficiency, and reduced design size among many other features.