Startseite Energiemanagement AC/DC- und DC/DC-Controller (externer FET)

UCC2895-Q1

AKTIV

Erweiterte BiCMOS-PWM-Controller mit Phasenverschiebung für die Automobil-Elektronik, von 9 V bis 17

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
UCC28951-Q1 AKTIV Vollbrückencontroller mit umweltfreundlicher Phasenverschiebung für den Automobilbereich und SR-Steu SR control, better light load efficiency, and programmable delays for ZVS

Produktdetails

Vin (max) (V) 16.5 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Automotive Features Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin Duty cycle (max) (%) 100
Vin (max) (V) 16.5 Operating temperature range (°C) -40 to 125 Control mode Current Topology Phase-shifted full bridge Rating Automotive Features Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin Duty cycle (max) (%) 100
SOIC (DW) 20 131.84 mm² 12.8 x 10.3
  • Qualified for Automotive Applications
  • Programmable Output Turn-On Delay
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak-Current-Mode, or Average-Current-Mode Control
  • Programmable Soft Start/Soft Stop and Chip Disable Via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During Undervoltage Lockout (UVLO)
  • Qualified for Automotive Applications
  • Programmable Output Turn-On Delay
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak-Current-Mode, or Average-Current-Mode Control
  • Programmable Soft Start/Soft Stop and Chip Disable Via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During Undervoltage Lockout (UVLO)

The UCC2895-Q1 is a phase-shift pulse-width modulation (PWM) controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant-frequency PWM in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The device can be used either as a voltage-mode or current-mode controller.

Although the UCC2895-Q1 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because it is built using the BCDMOS process, it operates with dramatically less supply current than its bipolar counterparts. The UCC2895-Q1 can operate with a maximum clock frequency of 1 MHz.

The UCC2895-Q1 is a phase-shift pulse-width modulation (PWM) controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant-frequency PWM in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The device can be used either as a voltage-mode or current-mode controller.

Although the UCC2895-Q1 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because it is built using the BCDMOS process, it operates with dramatically less supply current than its bipolar counterparts. The UCC2895-Q1 can operate with a maximum clock frequency of 1 MHz.

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Technische Dokumentation

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* Data sheet BiCMOS Advanced Phase-Shift PWM Controller datasheet (Rev. C) 02 Aug 2012

Design und Entwicklung

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