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

LM26420-Q1

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Zweifacher synchroner DC/DC-Wandler, 2 A, Zulassung für die Automobilindustrie, hoher Wirkungsgrad

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TPS62442-Q1 AKTIV 2,75-V-zu-6-V-Zweifach-Abwärtswandler mit 2-A- oder 3-A- und 1-A-Ausgang mit einstellbarer Frequenz Next generation dual buck with smaller size wand broader VIN range.

LM26420-Q1

AKTIV
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Produktdetails

Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 2200 Features Enable, Light Load Efficiency, Light load efficiency, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0009
Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 2200 Features Enable, Light Load Efficiency, Light load efficiency, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Rating Automotive Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0009
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 WQFN (RUM) 16 16 mm² 4 x 4
  • Qualified for automotive applications
  • AEC Q100-qualified with the following results:
    • Device temperature grade 0 (Q0): –40°C to +150°C ambient operating temperature
    • Device temperature grade 1 (Q1): –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Compliant with CISPR25 class 5 conducted emissions
  • Input voltage range of 3 V to 5.5 V
  • Output voltage range of 0.8 V to 4.5 V
  • 2-A Output current per regulator
  • Fixed 2.2-MHz switching frequency
  • 0.8 V, 1.5% Internal voltage reference
  • Internal soft start
  • Independent power good and precision enable for each output
  • Current mode, PWM operation
  • Thermal shutdown
  • Overvoltage protection
  • Start-up into prebiased output loads
  • Regulators are 180° out of phase
  • Create a custom design using the LM26420-Q1 with the WEBENCH® Power Designer
  • Qualified for automotive applications
  • AEC Q100-qualified with the following results:
    • Device temperature grade 0 (Q0): –40°C to +150°C ambient operating temperature
    • Device temperature grade 1 (Q1): –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Compliant with CISPR25 class 5 conducted emissions
  • Input voltage range of 3 V to 5.5 V
  • Output voltage range of 0.8 V to 4.5 V
  • 2-A Output current per regulator
  • Fixed 2.2-MHz switching frequency
  • 0.8 V, 1.5% Internal voltage reference
  • Internal soft start
  • Independent power good and precision enable for each output
  • Current mode, PWM operation
  • Thermal shutdown
  • Overvoltage protection
  • Start-up into prebiased output loads
  • Regulators are 180° out of phase
  • Create a custom design using the LM26420-Q1 with the WEBENCH® Power Designer

The LM26420-Q1 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.

Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420-Q1 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.

Because its switching frequency is ensured to be greater than 2 MHz, the LM26420-Q1 can be used in automotive applications without causing interference in the AM frequency band.

The LM26420-Q1 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.

Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420-Q1 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.

Because its switching frequency is ensured to be greater than 2 MHz, the LM26420-Q1 can be used in automotive applications without causing interference in the AM frequency band.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM26420-Q1 Dual 2-A, Automotive-Qualified, High-Efficiency Synchronous DC/DC Converter datasheet (Rev. B) PDF | HTML 18 Mai 2020
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Functional safety information LM26420-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 23 Apr 2020
Test report Automotive Wide-VIN to Point-of-Load Power Supply Reference Design (Rev. A) 26 Mär 2020
Technical article Build a sub-20W CISPR25 Class 5 power design for automotive infotainment processor PDF | HTML 02 Mai 2017
Technical article Spread Spectrum: Headache tablet or vitamin pill? PDF | HTML 18 Mai 2015
EVM User's guide AN-1870 LM26420 Evaluation Board (Rev. B) 24 Apr 2013
Application note AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) 23 Apr 2013

Design und Entwicklung

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

Evaluierungsplatine

LM26420XMHEVAL — Evaluierungsplatine für synchrone eTSSOP-Abwärtswandler, LM26420 2,2 MHz

The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

LM26420XSQEVAL — LM26420 2,2 MHz, LLP-Synchron-Abwärtswandler – Evaluierungsplatine

The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

TPS92662AEVM6-104 — TPS92662A-Q1 Sechskanal-Matrix-Evaluierungsmodul

The TPS92662AEVM6-104 consists of 66 invidividually controllable LEDs configured into a six channel application. This evaluation module shows the versatility and configurability of the TPS92662A-Q1 LED Matrix Manager Device. Using the companion control PCB, 6CHAUTOECU-899, and the TPS92662AEVM (...)
Anfordern
Evaluierungsplatine

TPS92663EVM6-901 — TPS92663-Q1 Sechs-Kanal-Matrix – Evaluierungsmodul

The TPS92663EVM6-901 consists of 63 individually controllable LEDs configured into a six channel application. This evaluation module shows the versatility and configurability of the TPS92663-Q1 LED Matrix Manager Device. Using the companion control PCB, 6CHAUTOECU-899, and the TPS92663EVM Software (...)
Anfordern
Referenzdesigns

TIDA-00746 — 17-W-System-Level-Power-Referenzdesign für Infotainment-Prozessoren in der Automobilindustrie

TIDA-00746 is a 17W system-optimized SMPS design for automotive infotainment processor power. The design has been tested for and passed CISPR25 Class 5 conducted EMI  limits.  All buck converters used in this design is switching above AM band (>1.85MHz).

The design is divided into four major blocks:
  1. (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-050040 — Referenzdesign für LED-Scheinwerfer-Treibermodul für den Halogenersatz für die Automobilindustrie

This reference design showcases the TPS92682 and the TPS92520 as a fully self functional three-channel LED driver for headlight applications.  The design is intended to be a low-cost halogen headlight module replacement compatible with an automotive body control module.  The three LED (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP15023 — Referenzdesign für Stromversorgung mit breitem VIN-Bereich und Point-of-Load mit Frontend-Schaltungs

This automotive point-of-load power supply reference design features complete front-end protection in a small overall solution 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 (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-050030 — Referenzdesign für zweistufiges Matrix-kompatibles Fahrzeugscheinwerfer-Steuergerät mit 120 W

This reference design details a headlight ECU using an interleaved boost in voltage regulation mode feeding four synchronous buck channels. This design is also capable of matrix headlight control and is mounted to a heatsink and enclosure to emulate an automotive headlight ECU. The TPS92682-Q1 is (...)
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
Referenzdesigns

TIDA-01492 — Referenzdesign für integriertes Stromversorgungs-Frontend und Mehrphasen-Prozessorstromversorgung im

This processor supply reference design is an automotive power solution for use in high performance, 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
Referenzdesigns

PMP4442 — Referenzdesign einer Stromversorgungslösung für I.MX6 Quad-Core-Prozessor im Automobilbereich

The PMP4442 reference design is an low-cost discrete power solution to power I.MX6 quad core. All the DCDC regulators are running at 2MHz to avoid the AM band interference and provide low solution size. The first stage DCDC converter can support wide Vin range from 6V to 42V, which can support (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00804 — i.MX6 Quad-Core-Prozessor-Leistung für die Automobilindustrie – Referenzdesign

The TIDA-00804 reference design is a low-cost discrete power solution for the i.MX6Q quad core application processor. All the DCDC regulators operate at frequencies above the AM radio broadcast band to avoid interference with the radio and to provide a small solution size due to smaller filter (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP10652 — System-Level-Referenzdesign für ein 30-W-ADAS-System mit den erforderlichen Schutzmaßnahmen für die

PMP10652 is a System optimized (CISPR 25 Class 3) 30W design for Surround View ADAS system.

The design has various protections such as Load dump through TVS (ISO pulse testing), Reverse Voltage (Innovative Smart diode with very low Iq), Battery Disconnect Switch with OVP protection (PFET) and is EMI (...)

Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP8750 — Dual-Synchron-Abwärtsregler mit hoher Schaltfrequenz, 2,5 V@1,0 A und 1,8 V@1,0 A – Referenzdesign

This design is a synchronous buck converter for automotive applications. It uses the LM26420XSQ to deliver two output voltage of 2.5V@1.0A and 1.8V@1.0A. The switching frequency is 2.2MHz.
Test report: PDF
Schaltplan: PDF
Gehäuse Pins Herunterladen
HTSSOP (PWP) 20 Optionen anzeigen
WQFN (RUM) 16 Optionen anzeigen
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Bestellen & Qualität

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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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  • Werksstandort
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