LM61460-Q1

AKTIV

Rauscharmer synchroner Abwärtswandler mit 3 V bis 36 V und 6 A für die Automobilindustrie

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Datenblatt

document-pdfAcrobat LM61460-Q1 Automotive 3-V to 36-V, 6-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. F) (Englisch) PDF | HTML

LM61460-Q1

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Automotive

Topology

Buck

Iout (max) (A)

6

Vin (max) (V)

36

Vin (min) (V)

3

Vout (max) (V)

34

Vout (min) (V)

1

Features

Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package

EMI & noise features

Low parasitic Hotrod packaging, Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000008

Duty cycle (max) (%)

98

TI functional safety category

Functional Safety-Capable

Rating

Automotive

Topology

Buck

Iout (max) (A)

6

Vin (max) (V)

36

Vin (min) (V)

3

Vout (max) (V)

34

Vout (min) (V)

1

Features

Enable, Fixed soft start, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Spread Spectrum, Synchronous rectification, Wettable flanks package

EMI & noise features

Low parasitic Hotrod packaging, Spread Spectrum

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000008

Duty cycle (max) (%)

98

TI functional safety category

Functional Safety-Capable

VQFN-HR (RJR)

14

14 mm² (4 mm × 3.5 mm)

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, T_J
Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra low EMI requirements
- Hotrod™ package and parallel input path minimize switch node ringing
- Spread spectrum reduces peak emissions
- Adjustable SW node rise time
Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- V_OUT adjustable from 1 V to 95% of V_IN
- 0.4-V dropout with 4-A load (typical)
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 83% PFM efficiency at 1-mA, 13.5 V_IN, 5 V_OUT
- External bias option for improved efficiency
Suitable for scalable power supplies
- Pin compatible with:
  - LM61440-Q1 (36 V, 4 A, adjustable f_SW)
  - LM62440-Q1 (36 V, 4 A, fixed f_SW)
  - LMQ61460-Q1 (36 V, 6 A, internal caps)

AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +150°C, T_J
Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra low EMI requirements
- Hotrod™ package and parallel input path minimize switch node ringing
- Spread spectrum reduces peak emissions
- Adjustable SW node rise time
Designed for automotive applications
- Supports 42-V automotive load dump
- ±1% total output regulation accuracy
- V_OUT adjustable from 1 V to 95% of V_IN
- 0.4-V dropout with 4-A load (typical)
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 83% PFM efficiency at 1-mA, 13.5 V_IN, 5 V_OUT
- External bias option for improved efficiency
Suitable for scalable power supplies
- Pin compatible with:
  - LM61440-Q1 (36 V, 4 A, adjustable f_SW)
  - LM62440-Q1 (36 V, 4 A, fixed f_SW)
  - LMQ61460-Q1 (36 V, 6 A, internal caps)

The LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

The LM61460-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The LM61460-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61460-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

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Technische Dokumentation

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	Whitepaper	Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A)	PDF \| HTML	28.11.2023
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	Anwendungshinweis	How to Migrate Between LM614xx and LM624xx Product Families	PDF \| HTML	01.11.2021
	Informationen zur funktionalen Sicherheit	LM614xx-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B)	PDF \| HTML	15.09.2021
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	Technischer Artikel	How device-level features and package options can help minimize EMI in automotive	PDF \| HTML	21.08.2020
	Technischer Artikel	Optimizing flip-chip IC thermal performance in automotive designs	PDF \| HTML	11.12.2019
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	Technischer Artikel	Effects of IC package on EMI performance	PDF \| HTML	22.05.2018
	Technischer Artikel	Designing USB into challenging automotive applications	PDF \| HTML	04.04.2018
	Anwendungshinweis	Designing High Performance, Low-EMI, Automotive Power Supplies		30.09.2017

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM61460EVM — Evaluierungsmodul für 36-V-, 6-A-, 5-V-Synchron-Abwärtswandler mit niedrigem EMI-Wert, 400 kHz

Das LM61460-Evaluierungsmodul (EVM) ist eine vollständig bestückte und getestete Platine zur Evaluierung des Synchron-Abwärtswandlers LM61460. Der LM61460 bietet einen hervorragenden Wirkungsgrad, einen niedrigen Ruhestrom und geringe EMI-Werte bei einer kleinen Lösungsgröße.

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