UCC28951-Q1

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Vollbrückencontroller mit umweltfreundlicher Phasenverschiebung für den Automobilbereich und SR-Steu

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Datenblatt

document-pdfAcrobat UCC2895x-Q1 Automotive Phase-Shifted Full-Bridge Controller for Wide-Input Voltage Range Applications datasheet (Rev. C) (Englisch) PDF | HTML

UCC28951-Q1

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Topology

Phase-shifted full bridge

Control mode

Current

Features

Adjustable switching frequency, Current limiting, Enable/Shutdown, Error amplifier, Green mode, Light-load efficiency, Programmable slope compensation, SR logic, Soft start, Soft switching, Synchronization pin, Thermal shutdown

Duty cycle (max) (%)

97

Topology

Phase-shifted full bridge

Control mode

Current

Features

Adjustable switching frequency, Current limiting, Enable/Shutdown, Error amplifier, Green mode, Light-load efficiency, Programmable slope compensation, SR logic, Soft start, Soft switching, Synchronization pin, Thermal shutdown

Duty cycle (max) (%)

97

TSSOP (PW)

24

49.92 mm² (7.8 mm × 6.4 mm)

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level H2
- Device CDM ESD classification level C3B
Enhanced zero-voltage switching (ZVS) range
Direct synchronous rectifier (SR) control
Light-load efficiency management including:
- Burst mode operation
- Discontinuous conduction mode (DCM), dynamic SR on/off control
Average- or peak-current mode control with programmable slope compensation and voltage-mode control
Closed-loop soft-start and enable function
Programmable switching frequency up to 1 MHz with bidirectional synchronization
(±3%) cycle-by-cycle current limit protection with hiccup mode support
150µA start-up current
VDD undervoltage lockout
Wide temperature range: –40°C to +125°C

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level H2
- Device CDM ESD classification level C3B
Enhanced zero-voltage switching (ZVS) range
Direct synchronous rectifier (SR) control
Light-load efficiency management including:
- Burst mode operation
- Discontinuous conduction mode (DCM), dynamic SR on/off control
Average- or peak-current mode control with programmable slope compensation and voltage-mode control
Closed-loop soft-start and enable function
Programmable switching frequency up to 1 MHz with bidirectional synchronization
(±3%) cycle-by-cycle current limit protection with hiccup mode support
150µA start-up current
VDD undervoltage lockout
Wide temperature range: –40°C to +125°C

The UCC28951-Q1 controller is an enhanced version of the UCC28950-Q1. It is a fully compatible drop-in replacement for the UCC28950-Q1. Refer to application note Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 to determine which controller to use.The UCC2895x-Q1 devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.

ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.

Easily get started with the UCC2895x-Q1 600W phase shifted full bridge design review/application note,

The 24-pin, TSSOP package complies with RoHS requirements.

The UCC28951-Q1 controller is an enhanced version of the UCC28950-Q1. It is a fully compatible drop-in replacement for the UCC28950-Q1. Refer to application note Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 to determine which controller to use.The UCC2895x-Q1 devices use advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage.

ZVS operation ensured over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency.

Easily get started with the UCC2895x-Q1 600W phase shifted full bridge design review/application note,

The 24-pin, TSSOP package complies with RoHS requirements.

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Technische Dokumentation

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*	Datenblatt	UCC2895x-Q1 Automotive Phase-Shifted Full-Bridge Controller for Wide-Input Voltage Range Applications datasheet (Rev. C)	PDF \| HTML	17.10.2024
	Anwendungshinweis	UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D)	PDF \| HTML	04.03.2022
	Informationen zur funktionalen Sicherheit	UCC28951-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	30.09.2020
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Design und Entwicklung

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