Startseite Energiemanagement AC/DC & DC/DC converters (integrated FET)
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AC/DC & DC/DC converters (integrated FET)

LMS3655-Q1

AKTIV

Synchroner Abwärtswandler, 400 kHz (5,5 A, 36 V)

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LM61460-Q1 AKTIV 3-V bis 36-V, 6-A, rauscharmer Synchron-Abwärtswandler für die Automobilindustrie Smaller solution size, higher efficiency and lower EMI.

LMS3655-Q1

AKTIV
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Produktdetails

Iout (max) (A) 5.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 15 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000015
Iout (max) (A) 5.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 500 Features Enable, Fixed Output, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package Control mode current mode Vout (min) (V) 1 Vout (max) (V) 15 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000015
VQFN-HR (RNL) 22 20 mm² 5 x 4
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM classification level 2
    • Device CDM classification level C6
  • 96% Peak efficiency while converting 12 V to 5 V
  • Low EMI and minimized switch node ringing
  • 400-kHz (±10%) fixed switching frequency
  • –40°C to +150°C junction temperature range
  • External frequency synchronization
  • RESET output with internal filter and 3-ms release timer
  • Automatic light load mode for improved efficiency
  • Pin-selectable forced PWM mode
  • Built-In compensation, soft start, current limit, thermal shutdown, and UVLO
  • 0.35-V dropout with 3.5-A Load at 25°C (Typical)
  • 18-µA IQ_VIN: quiescent current at 3.3 VOUT and no load (typical)
  • Output voltage: 5 V, 3.3 V, and ADJ (1 V to 20 V)
  • ±1.5% reference voltage tolerance
  • Create a custom design using the LMS3655-Q1 with the WEBENCH Power Designer
  • AEC-Q100-qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM classification level 2
    • Device CDM classification level C6
  • 96% Peak efficiency while converting 12 V to 5 V
  • Low EMI and minimized switch node ringing
  • 400-kHz (±10%) fixed switching frequency
  • –40°C to +150°C junction temperature range
  • External frequency synchronization
  • RESET output with internal filter and 3-ms release timer
  • Automatic light load mode for improved efficiency
  • Pin-selectable forced PWM mode
  • Built-In compensation, soft start, current limit, thermal shutdown, and UVLO
  • 0.35-V dropout with 3.5-A Load at 25°C (Typical)
  • 18-µA IQ_VIN: quiescent current at 3.3 VOUT and no load (typical)
  • Output voltage: 5 V, 3.3 V, and ADJ (1 V to 20 V)
  • ±1.5% reference voltage tolerance
  • Create a custom design using the LMS3655-Q1 with the WEBENCH Power Designer

The LMS3635-Q1 and LMS3655-Q1 synchronous buck regulators are optimized for high performance applications, providing an output voltage of 3.3 V, 5 V, or an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655-Q1 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.

The LMS3635-Q1 and LMS3655-Q1 synchronous buck regulators are optimized for high performance applications, providing an output voltage of 3.3 V, 5 V, or an adjustable output of 1 V to 20 V. Seamless transition between PWM and PFM modes, along with a low quiescent current, ensures high efficiency and superior transient responses at all loads.

Advanced high-speed circuitry allows the LMS3655-Q1 to regulate an input of 24 V to an output of 3.3 V at a fixed frequency of 400 kHz while also enabling a continuous load current of 5.5 A. An innovative frequency foldback architecture allows this device to regulate a 3.3-V output from an input voltage of only 3.5 V. The input voltage can range up to 36 V, with transient tolerance up to 42 V, easing input surge protection design.

An open-drain reset output, with built-in filtering and delay, provides a true indication of system status. This feature negates the requirement for an additional supervisory component, saving cost and board space.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LMS3635-Q1 3.5-A, LMS3655-Q1 5.5-A, 36-V Synchronous, 400-kHz Step-Down Converter datasheet (Rev. C) PDF | HTML 01 Aug 2021
White paper Time-Saving and Cost-Effective Innovations for EMI Reduction (Rev. A) PDF | HTML 28 Nov 2023
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 15 Apr 2021
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 11 Dez 2019
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 09 Mai 2019
EVM User's guide LMS36x5-Q1 EVM User's Guide (Rev. A) 13 Apr 2018
Technical article Designing USB into challenging automotive applications PDF | HTML 04 Apr 2018
Application note Designing High Performance, Low-EMI, Automotive Power Supplies 30 Sep 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

DS90UB971-Q1EVM — DS90UB971-Q1-Evaluierungsmodul

Das Evaluierungsmodul (EVM) DS90UB971-Q1 ist ein funktionsfähiges Platinendesign zur Evaluierung des Serializers DS90UB971-Q1 FPD-Link IV. Der Serializer DS90UB971-Q1 repräsentiert die erste Generation von FPD-Link IV Serializern und wurde zur Unterstützung von Ultra-Highspeed-Sensoren entwickelt, (...)
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Evaluierungsplatine

LMS3655AQEVM — LMS3655-Q1 5,5 A, 5 V, 400 kHz, Synchron-Abwärtswandler – Evaluierungsmodul

The LMS3655AQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655 automotive integrated buck converter. For optimized EMI performance, the EVM has an EMI filter on the back side that assists with noise reduction. The user can choose to bypass that EMI filter (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LMS3655MQEVM — LMS3655-Q1 5,5 A, 5 V, Synchron-Abwärtswandler, 400 kHz – Evaluierungsmodul

The LMS3655MQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655-Q1 automotive integrated buck converter. For optimized EMI performance, the LMS3655-Q1 has Spread Spectrum built in and the  EVM has an EMI filter on the back side that assists with noise reduction. The (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LMS3655NQEVM — LMS3655-Q1 5,5 A, 3,3 V, 400 kHz, Synchron-Abwärtswandler – Evaluierungsmodul

The LMS3655NQEVM evaluation module (EVM) demonstrates the capabilities of the LMS3655-Q1 automotive integrated buck converter. For optimized EMI performance, the LMS3655-Q1 has Spread Spectrum built in and the  EVM has an EMI filter on the back side that assists with noise reduction. The (...)
Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

LMS36553-Q1 PSpice Transient Model

SNAM217.ZIP (105 KB) - PSpice Model
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LMS36553-Q1 Unencrypted PSpice Transient Model

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Simulationsmodell

LMS36555-Q1 PSpice Transient Model

SNAM213.ZIP (108 KB) - PSpice Model
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Simulationsmodell

LMS36555-Q1 Unencrypted PSpice Transient Model

SNAM214.ZIP (7 KB) - PSpice Model
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Simulationsmodell

LMS3655A-Q1 PSpice Transient Model

SNAM216.ZIP (157 KB) - PSpice Model
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Simulationsmodell

LMS3655A-Q1 Unencrypted PSpice Transient Model

SNAM215.ZIP (7 KB) - PSpice Model
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Referenzdesigns

PMP20249 — Referenzdesign für automobiles USB-Doppelladegerät gemäß CISPR 25 Klasse 4 mit vollständigem Fronten

PMP20249 is an EMI optimized design for dual automotive USB charger system utilizing the LMS3635 and LMS3655 regulator ICs (400kHz fully-integrated synchronous buck for automotive application) and TPS2549 USB switch (TPS2549-Q1 automotive USB charging port controller with integrated power switch (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01388 — CISPR 25 Klasse 5-Referenzdesign für duale USB-Ladegeräte für die Automobilindustrie mit vollständig

TIDA-01388 is a 21 W dual automotive USB charger solution featuring complete front end protection with small size. The system can clamp fast high-voltage electrical transients and maintain operation through these events. It can also properly respond to a reverse battery polarity event and shut down (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01253 — Referenzdesign für zwei Remote- und lokalen USB-Anschluss gemäß CISPR 25 Klasse 4 für die Automobili

This automotive media port design allows customers to accelerate media port systems by taking advantage of a complete reference design comprising analog AEC-100-qualified integrated circuits (ICs). The reference design is specified for automotive media ports that require both local-port and (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01524 — Referenzdesign für hocheffizientes Stromversorgungs-Frontend und Mehrphasen-Prozessorstromversorgung

This processor supply reference design is an automotive power solution for use in highperformance, single-core-voltage application processors in advanced driver assistance systems (ADASs). This design can support core supply currents up to 10 A at 0.9 V. The design can also operate with a wide (...)
Design guide: PDF
Schaltplan: PDF
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Bestellen & Qualität

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