LM5171-Q1
Bidirektionaler 80-V-Zwei-Kanal-Abwärts-/Aufwärtsregler für die Automobilindustrie
LM5171-Q1
- AEC-Q100 qualified for automotive applications:
- Device temperature grade 1: –40°C to +125°C ambient operating range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Functional Safety-Capable
- 85V HV-port and 80V LV-port max ratings
- 1% Typical accuracy of bidirectional current regulation
- 1% Typical accuracy of channel current monitoring
- I2C interface for monitoring and diagnosis
- Built-in 3.5V 1% reference voltage
- Integrated 5V 10mA bias supply
- 5A peak half-bridge gate drivers
- Programmable or adaptive dead-time control
- Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
- Independent channel enabling control inputs
- Integrated both current and voltage loop control
- Programmable cycle-by-cycle peak current limit
- Over-temperature shutdown
- HV and LV port overvoltage protection
- Dynamically selectable diode emulation and forced PWM operation modes
- Programmable soft-start timer
- Support both multiphase and independent channel operations
- Support urgent shutdown latch
The LM5171-Q1 controller provides the high voltage and precision elements of a dual-channel bidirectional converter. Examples include dual battery systems. The LM5171-Q1 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171-Q1 also supports independent channel bi-directional operations making it versatile as standalone controller operating as multiphase Buck/Boost or independent Buck or Boost.
The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | LM5171-Q1 Dual Channel Bidirectional Controller datasheet (Rev. A) | PDF | HTML | 18 Jul 2023 |
Functional safety information | LM5171-Q1 Functional Safety FIT, FMD, and Pin FMA (Rev. A) | PDF | HTML | 06 Okt 2023 | |
Certificate | LM5171EVM-BIDIR EU Declaration of Conformity (DoC) | 05 Mai 2023 | ||
Application note | U-140 Average Current Mode Control of Switching Power Supplies | 05 Sep 1999 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LM5171EVM-BIDIR — LM5171 Evaluierungsmodul
PMP41079 — Zweiphasiger, verschachtelter Aufwärtswandlerr Referenzdesign für Klasse-H-Audioverstärker<
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
HTQFP (PHP) | 48 | Ultra Librarian |
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- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
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