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AC/DC & DC/DC controllers (external FET)

UCC28950-Q1

AKTIV

Vollbrücken-PWM-Controller für die Automobilindustrie, 8 V bis 20 V, mit Phasenverschiebung und sync

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Datenblatt

UCC28950-Q1

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Vin (max) (V) 17 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Automotive Duty cycle (max) (%) 97
Vin (max) (V) 17 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Automotive Duty cycle (max) (%) 97
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40ºC to 125ºC Ambient
      Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Enhanced Wide-Range Resonant Zero-Voltage Switching (ZVS) Capability
  • Direct Synchronous Rectifier (SR) Control
  • Light-Load Efficiency Management Including
    • Burst Mode Operation
    • Discontinuous Conduction Mode (DCM), Dynamic SR On/Off Control
      With Programmable Threshold
    • Programmable Adaptive Delay
  • 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
  • 150-µA 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: –40ºC to 125ºC Ambient
      Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Enhanced Wide-Range Resonant Zero-Voltage Switching (ZVS) Capability
  • Direct Synchronous Rectifier (SR) Control
  • Light-Load Efficiency Management Including
    • Burst Mode Operation
    • Discontinuous Conduction Mode (DCM), Dynamic SR On/Off Control
      With Programmable Threshold
    • Programmable Adaptive Delay
  • 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
  • 150-µA Start-Up Current
  • VDD Undervoltage Lockout
  • Wide Temperature Range, –40°C to 125°C

The UCC28950-Q1 enhanced phase-shifted controller builds upon Texas Instruments’ industry-standard UCCx895 phase-shifted controller family with enhancements that offer best-in-class efficiency in today’s high-performance power systems. The UCC28950-Q1 implements advanced control of the full bridge along with active control of the synchronous-rectifier output stage.

The primary-side signals allow programmable delays to ensure ZVS operation over wide load-current and input-voltage ranges, while the load current naturally tunes the secondary-side switching delays of the synchronous rectifiers, maximizing overall system efficiency.

The UCC28950-Q1 also offers multiple light-load management features, including burst mode and dynamic SR on/off control when transitioning in and out of discontinuous-current-mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads.

In addition, the UCC28950-Q1 includes support for peak current along with voltage-mode control, programmable switching frequency up to 1 MHz, and a wide set of protection features including cycle-by-cycle current limit, UVLO, and thermal shutdown. It is easy to arrange 90-degree phase-shifted interleaved synchronized operation between two converters.

The UCC28950-Q1 is available in a TSSOP-24 package.

The UCC28950-Q1 enhanced phase-shifted controller builds upon Texas Instruments’ industry-standard UCCx895 phase-shifted controller family with enhancements that offer best-in-class efficiency in today’s high-performance power systems. The UCC28950-Q1 implements advanced control of the full bridge along with active control of the synchronous-rectifier output stage.

The primary-side signals allow programmable delays to ensure ZVS operation over wide load-current and input-voltage ranges, while the load current naturally tunes the secondary-side switching delays of the synchronous rectifiers, maximizing overall system efficiency.

The UCC28950-Q1 also offers multiple light-load management features, including burst mode and dynamic SR on/off control when transitioning in and out of discontinuous-current-mode (DCM) operation, ensuring ZVS operation is extended down to much lighter loads.

In addition, the UCC28950-Q1 includes support for peak current along with voltage-mode control, programmable switching frequency up to 1 MHz, and a wide set of protection features including cycle-by-cycle current limit, UVLO, and thermal shutdown. It is easy to arrange 90-degree phase-shifted interleaved synchronized operation between two converters.

The UCC28950-Q1 is available in a TSSOP-24 package.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet UCC28950-Q1, Green Phase-Shifted Full-Bridge Controller with Synchronous Rectif datasheet (Rev. B) 15 Sep 2012
Application note UCC28950 600W Phase Shifted Full Bridge Design Review/Application Report (Rev. D) PDF | HTML 04 Mär 2022
Application note Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 13 Nov 2017
More literature Design review of a 2-kW parallelable power supply module 17 Aug 2016
More literature Design review of a 2-kW parallelable power supply module (PPT) 17 Aug 2016
EVM User's guide 600-W, Phase-Shifted, Full-Bridge Converter (Rev. A) 19 Mai 2010

Design und Entwicklung

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

Evaluierungsplatine

UCC28950EVM-442 — UCC28950-Evaluierungsmodul für 600-W-Vollbrückenwandler mit Phasenverschiebung

The UCC28950EVM-442 is a 600-W phase-shifted full-bridge converter that converts a 370 V to 410-V DC input to a regulated 12-V output. This converter was designed to maintain ZVS down to 50% load. This 600-W EVM was designed to demonstrate how the UCC28950 control device could be used in (...)

Benutzerhandbuch: PDF
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Berechnungstool

SLUC210 — UCC28950 MathCAD Design Tool

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UCC28950 — Grüner phasenverschobener Vollbrückenregler mit synchroner Gleichrichtungsregelung UCC28950-Q1 — Vollbrücken-PWM-Controller für die Automobilindustrie, 8 V bis 20 V, mit Phasenverschiebung und sync
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Berechnungstool

SLUC222 — UCC28950 Excel Design Tool

Unterstützte Produkte und Hardware

Unterstützte Produkte und Hardware

Produkte
AC/DC & DC/DC controllers (external FET)
UCC28950 — Grüner phasenverschobener Vollbrückenregler mit synchroner Gleichrichtungsregelung UCC28950-Q1 — Vollbrücken-PWM-Controller für die Automobilindustrie, 8 V bis 20 V, mit Phasenverschiebung und sync
Hardware-Entwicklung
Evaluierungsplatine
UCC28950EVM-442 — UCC28950-Evaluierungsmodul für 600-W-Vollbrückenwandler mit Phasenverschiebung
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TSSOP (PW) 24 Optionen anzeigen
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  • Qualifikationszusammenfassung
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