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LM61495-Q1

ACTIVE

10-A automotive buck converter optimized for power density and low EMI

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Data sheet

LM61495-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 5 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed, Wettable flanks package EMI features Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34.2 Iq (typ) (µA) 5 Duty cycle (max) (%) 98
VQFN-HR (RPH) 16 15.75 mm² 4.5 x 3.5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Input voltage range from 3 V to 36 V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 25 class 5 compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable 400 kHz and 2.2 MHz fixed or adjustable from 200 kHz – 2.2 MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency solution
    • 95% efficient for an 8-A load
    • 5-µA input current while unloaded in auto mode
    • <1-µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5-mm × 3.5-mm wettable flank QFN package
    • ϴJA = 21.6°C/W, measured on LM61495RPHEVM
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Input voltage range from 3 V to 36 V
  • RESET output with filter and delayed release
  • Designed for low EMI:
    • CISPR 25 class 5 compliant EVM
    • Pin-configurable spread spectrum
    • Adjustable SW node rise time
    • Above and below AM band operation: pin configurable 400 kHz and 2.2 MHz fixed or adjustable from 200 kHz – 2.2 MHz
    • Low EMI symmetrical pinout
    • Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
  • High-efficiency solution
    • 95% efficient for an 8-A load
    • 5-µA input current while unloaded in auto mode
    • <1-µA shutdown current (typical)
  • High power density
    • Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
    • 4.5-mm × 3.5-mm wettable flank QFN package
    • ϴJA = 21.6°C/W, measured on LM61495RPHEVM

The LM6x4xx-Q1 buck regulator family are automotive-focused regulators providing either fixed or an adjustable output voltage which can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range of 3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device incorporates pin selectable spread spectrum, and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±4% (typical), drastically reducing peak emissions through a combination of triangular and pseudorandom modulation, and includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output, with filtering and delayed release, gives a true indication of system status. In auto mode the device automatically transitions between Fixed frequency Pulse Width Modulation (FPWM) and Pulse Frequency Modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.

The LM6x4xx-Q1 buck regulator family are automotive-focused regulators providing either fixed or an adjustable output voltage which can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range of 3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device incorporates pin selectable spread spectrum, and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±4% (typical), drastically reducing peak emissions through a combination of triangular and pseudorandom modulation, and includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output, with filtering and delayed release, gives a true indication of system status. In auto mode the device automatically transitions between Fixed frequency Pulse Width Modulation (FPWM) and Pulse Frequency Modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.
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Technical documentation

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Type Title Date
* Data sheet LM62460-Q1, LM61480-Q1, and LM61495-Q1 Pin-Compatible 6-A/8-A/10-A Automotive Buck Converter Optimized for Power Density and Low EMI datasheet (Rev. D) PDF | HTML 19 Aug 2021
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 28 Nov 2023
Application note How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck PDF | HTML 16 Aug 2023
Product overview Mobileye EyeQ6L – Semi Discrete Power Tree PDF | HTML 05 Aug 2022
Application note Using the LM61460-Q1 and LM61495-Q1 in USB Type-C Applications PDF | HTML 15 Dec 2021
More literature Advanced Power-Converter Features for Reducing EMI PDF | HTML 07 Dec 2021
Application note Configuring LM62460 for Dual-Phase Operation PDF | HTML 12 Aug 2021
Functional safety information LM62460-Q1, LM61480-Q1, LM61495-Q1 Functional Safety, FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 05 Apr 2021
EVM User's guide LM61495-Q1EVM EVM User’s Guide (Rev. A) PDF | HTML 23 Mar 2021
Technical article Lowering audible noise in automotive applications with TI’s DRSS technology PDF | HTML 18 Mar 2021
Analog Design Journal The pros and cons of spread‐spectrum implementation methods in buck regulators 18 Mar 2021
White paper 透過節省時間和成本的創新技術 降低電源中的EMI 04 Dec 2020
White paper 전원 공급 장치의 EMI 절감을 위한 시간 및 비용 효율적 혁신 04 Dec 2020
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 18 Nov 2020

Design & development

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

Evaluation board

LM61495RPHEVM — LM61495-Q1 synchronous 10-A, 400-kHz step-down converter evaluation module

The LM61495RPHEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM61495-Q1 synchronous step-down converter.  The LM61495-Q1 provides exceptional efficiency, low IQ, and low EMI in a small solution size.
User guide: PDF | HTML
Not available on TI.com
Simulation model

LM61495-Q1 PSpice Transient Model (Rev. A)

SNVMC15A.ZIP (224 KB) - PSpice Model
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Calculation tool

SNVR498 — LM61495-Q1 Design Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
LM61480-Q1 — 8-A automotive buck converter optimized for power density and low EMI LM61495-Q1 — 10-A automotive buck converter optimized for power density and low EMI LM62460-Q1 — 6-A automotive buck converter optimized for power density and low EMI
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Reference designs

PMP23241 — Synchronous inverting buck-boost converter with adjustable output reference design

This reference design uses the LM61495-Q1 synchronous buck regulator. This device features internal top and bottom field-effect transistors (FET), which are configured as a synchronous inverting buck-boost converter to provide an adjustable output between –7.5V and –12V capable of delivering a (...)
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RPH) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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