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NEW LM5012-Q1 ACTIVE Automotive, 6-V to 100-V input, 2.5-A non-synchronous buck DC/DC converter Higher input voltage rating, easy to use SO-8 package and low IQ.

Product details

Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 2 Vout (max) (V) 60 Iout (max) (A) 2 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Operating temperature range (°C) -40 to 125 Rating Automotive Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (max) (%) 92
Vin (min) (V) 4.5 Vin (max) (V) 65 Vout (min) (V) 2 Vout (max) (V) 60 Iout (max) (A) 2 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Light load efficiency, Pre-bias soft start, Synchronous rectification Operating temperature range (°C) -40 to 125 Rating Automotive Regulated outputs (#) 1 Control mode Constant on-time (COT) Duty cycle (max) (%) 92
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • AEC-Q100 Qualified for Automotive Applications
    • Temperature Grade 1: –40°C ≤ TA ≤ 125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C5
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Meets CISPR 25 EMI Standard
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • 14-Pin HTSSOP Package, 0.65-mm Pitch
  • Create a Custom Design Using the LM5160-Q1 With the WEBENCH® Power Designer
  • AEC-Q100 Qualified for Automotive Applications
    • Temperature Grade 1: –40°C ≤ TA ≤ 125°C
    • HBM ESD Classification Level 2
    • CDM ESD Classification Level C5
  • Wide 4.5-V to 65-V Input Voltage Range
  • Integrated High-Side and Low-Side Switches
    • No External Schottky Diode Required
  • 2-A Maximum Load Current
  • Meets CISPR 25 EMI Standard
  • Adaptive Constant On-Time Control
    • No External Loop Compensation
    • Fast Transient Response
  • Selectable Forced PWM or DCM Operation
    • FPWM Supports Multi-Output Fly-Buck™
  • Nearly Constant Switching Frequency
    • Resistor Adjustable up to 1 MHz
  • Programmable Soft-Start Time
  • Prebiased Start-Up
  • ±1% Feedback Voltage Reference
  • Inherent Protection Features for Robust Design
    • Peak Current Limiting Protection
    • Adjustable Input UVLO and Hysteresis
    • VCC and Gate Drive UVLO Protection
    • Thermal Shutdown Protection With Hysteresis
  • 14-Pin HTSSOP Package, 0.65-mm Pitch
  • Create a Custom Design Using the LM5160-Q1 With the WEBENCH® Power Designer

The LM5160-Q1 is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160-Q1 is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 14-pin HTSSOP package with 0.65-mm pin pitch.

The LM5160-Q1 is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.

Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160-Q1 is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.

The LM5160-Q1 is qualified to automotive AEC-Q100 grade 1 and is available in 14-pin HTSSOP package with 0.65-mm pin pitch.

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Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5160DNTBKEVM — LM5160DNTBKEVM Wide Input 65V, 1.5A Synchronous Step-Down DC-DC Converter

 

The LM5160DNTBKEVM evaluation board provides a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 10V to 60V. The circuit delivers load currents to 1.5A. The application schematic is setup up (...)

User guide: PDF
Not available on TI.com
Evaluation board

LM5160DNTFBKEVM — LM5160DNTFBKEVM Fly-Buck Isolated Bias Supply Evaluation Board

The LM5160DNTFBK evaluation module is designed to operate from a 24V nominal bus with an input voltage range of 18V to 32V.  It is capable of supplying 12V/400 mA to the load at the isolated output.  The nominal switching frequency is 300kHz.  The high side and low side MOSFETs are (...)

User guide: PDF
Not available on TI.com
Simulation model

LM5160 PSpice Transient Model

SNVM692.ZIP (92 KB) - PSpice Model
Simulation model

LM5160 Unencrypted PSpice Transient Model

SNVM965.ZIP (3 KB) - PSpice Model
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Fly-Buck and Flyback Topology Selector

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.
Calculation tool

LM5160DNTBK-CALC — LM5160 Buck Regulator Quick Start Calculator

Welcome to the LM5160 Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM5160 65V, 1.5A COT Buck Regulator. As such, the user can expeditiously arrive at an optimized design to meet the (...)
Calculation tool

LM5160DNTFBK-CALC — LM5160 Fly-Buck Quick Start Calculator

Welcome to the LM5160 Fly-Buck Regulator Quick Start Design Tool. This stand-alone tool facilitates and assists the power supply engineer with design of a DC/DC Fly-Buck regulator based on the LM5160 65V, 1.5A COT Fly-Buck Regulator. As such, the user can expeditiously arrive at an optimized design (...)
Reference designs

TIDA-01418 — Automotive high voltage, high power motor driver reference design for HVAC compressor

This brushless DC (BLDC) motor reference design controls an automotive HVAC (heating, ventilation, and air conditioning) compressor by using the UCC27712-Q1 high-side and low-side gate driver followed by discrete insulated-gate bipolar transistor (IGBT) half bridges. This reference design uses (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP30227 — Automotive Isolated 15V/4.5W Bias Power Supply Reference Design

This reference design displays a power supply solution to generate an isolated 15V rail with a maximum load current of 300mA from an input voltage between 8V and 28V. It also contains an optional Buck converter on the secondary side to provide a 5V rail with 200mA load current for a microcontroller.
Test report: PDF
Schematic: PDF
Reference designs

PMP30165 — 5W Isolated Triple Output Inverting Fly-Buck-Boost Reference Design

The PMP30165 reference design is an inverting Fly-Buck-Boost Converter using the LM5160-Q1 to generate 3 isolated output voltages. The reference design accepts an input voltage of 10V to 14V. The LM5160-Q1 device is a 65V, 2-A synchronous step-down converter with integrated high-side and low-side (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP20330 — 5.5W Dual Output Industrial Isolated Flybuck Reference Design

PMP20330 is an isolated Flybuck converter utilizing the LM5160 for industrial applications. This design has a minimum operating input voltage of 18V and a maximum input voltage of 31V. The design is capable of sourcing 1A continuous current at 3.3Vout, and 0.5A continuous current at 5Vout. (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00794 — Thermal Protection Reference Design of IGBT Modules for HEV/EV Traction Inverters

The TIDA-00794 reference design is a temp sensing solution for IGBT thermal protection in HEV/EV traction inverter system. It monitors the IGBT temperature via the NTC thermistor integrated inside the IGBT module. It provides thermal shut down to the IGBT gate drivers once the NTC thermistor (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP15005 — Dual-Output Isolated Fly-Buck Reference Design With an Ultra-Small Coupled Inductor

PMP15005 uses the LM5160 in a Fly-Buck™ topology with the primary and secondary output both set to 5V nominal. The circuit accommodates a voltage input range from 14V to 36V, ideal for the 24-V nominal input rail. While the primary side is set at 5.4V nominally using the feedback resistors, (...)
Test report: PDF
Schematic: PDF
Package Pins Download
HTSSOP (PWP) 14 View options

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