LMR38020
SIMPLE SWITCHER®-Leistungswandler mit 4,2 V bis 80 V, 2 A, synchroner Abwärtswandler mit 40 μA Ruhes
LMR38020
- Functional Safety-Capable
- Configured for rugged industrial applications
- 4.2-V to 80-V input voltage range
- 2-A continuous output current
- Ultra-low 40-µA operating quiescent current
- > 1.5-mm distance between VIN and GND pin
- 200-kHz to 2.2-MHz adjustable switching frequency
- Frequency synchronization to external clock
- Spread spectrum option for reduced EMI
- 97% maximum duty cycle
- Support start-up with pre-biased output
- ±1.0% tolerance voltage reference at room temperature
- Precision enable
- Easy to use device with integrated compensation network enabling low BOM count
- Integrated synchronous rectification
- 8-pin HSOIC with PowerPAD™ integrated circuit package
- PFM and forced PWM (FPWM) options
- Available in 1-A, LMR38010
- Create a custom design using the LMR38020 with the WEBENCH Power Designer
The LMR38020 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020 operates during input voltage dips as low as 4.2 V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input industrial applications and MHEV/EV systems.
The LMR38020 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured 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.
The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020 is available in an 8-pin HSOIC PowerPAD integrated circuit package.
Technische Dokumentation
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | LMR38020 4.2-V to 80-V, 2-A, Synchronous SIMPLE SWITCHER Power Converter with 40-µA IQ datasheet (Rev. E) | PDF | HTML | 18 Sep 2023 |
| Application note | Designing an Isolated Buck Converter using the LMR38020 | PDF | HTML | 30 Aug 2023 | |
| Application note | Auxiliary Power Supply Design Based on LMR38020 Fly-Buck in Solar Micro Inverter | PDF | HTML | 29 Aug 2023 | |
| EVM User's guide | LMR38020EVM User Guide (Rev. A) | PDF | HTML | 19 Sep 2022 | |
| Functional safety information | LMR380x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 02 Nov 2021 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LMR38020EVM — LMR38020 Evaluierungsmodul SIMPLE SWITCHER®-Abwärts-Spannungswandler mit 80 V, 2 A, 2,2 MHz und 40 μ
LMR38020QEVM — LMR38020-Q1 SIMPLE SWITCHER®-Leistungswandler, 80 V, 2 A, synchroner Abwärtswandler, 40 µA Ruhestrom
TIDA-010950 — Referenzdesign für Dämpfer- und EEV-Controller mit Leistungsregelung und Hall-Effekt-Positionserf
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
Empfohlene Produkte können Parameter, Evaluierungsmodule oder Referenzdesigns zu diesem TI-Produkt beinhalten.
Support und Schulungen
TI E2E™-Foren mit technischem Support von TI-Ingenieuren
Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.
Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support.