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UCC28089

ACTIVO

Oscilador de inserción-extracción del lado primario con control de tiempo muerto

Detalles del producto

Topology Full bridge, Half bridge, Push pull Control mode Current Features Dead time control, Soft start, Synchronization pin Duty cycle (max) (%) 50
Topology Full bridge, Half bridge, Push pull Control mode Current Features Dead time control, Soft start, Synchronization pin Duty cycle (max) (%) 50
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Push-Pull Oscillator With Programmable Deadtime
  • High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
  • Can be Used in Push-Pull, Half-Bridge, or Full-Bridge Topologies
  • Oscillator Synchronization Output
  • Low Start-Up Current of 130 µA and 1.4-mA Typical Run Current
  • Over-Current Shutdown
  • Digitally Controlled Over-Current/Retry Feature
  • Undervoltage Lockout With Hysteresis
  • APPLICATIONS
    • High Efficiency Cascaded Converters
    • Inverters
    • Electronic Ballasts
    • Uninterruptable Power Supplies (UPS)
    • AC or DC Links

  • Push-Pull Oscillator With Programmable Deadtime
  • High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
  • Can be Used in Push-Pull, Half-Bridge, or Full-Bridge Topologies
  • Oscillator Synchronization Output
  • Low Start-Up Current of 130 µA and 1.4-mA Typical Run Current
  • Over-Current Shutdown
  • Digitally Controlled Over-Current/Retry Feature
  • Undervoltage Lockout With Hysteresis
  • APPLICATIONS
    • High Efficiency Cascaded Converters
    • Inverters
    • Electronic Ballasts
    • Uninterruptable Power Supplies (UPS)
    • AC or DC Links

The UCC28089 is a versatile BiCMOS controller for dc-to-dc or off-line fixed-frequency switching power supplies. The UCC28089 has dual alternating output stages in dual-alternating push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop and duty cycle is limited to less than 50%.

The UCC28089 is optimized for use as the primary-side companion controller for a cascaded converter that has secondary-side control. The device incorporates dead-time programming. The synchronization output also provides dead-time information. The retry and soft-start duration scales with the oscillator clock frequency for high performance fault recovery.

The UCC28089 also provides primary side under-voltage protection (UVLO), and over-current protection. Both the soft start and retry after fault durations scale with oscillator frequency for high performance. The turn-on/off UVLO thresholds are 10.5 V/8.0 V.

The UCC28089 is a versatile BiCMOS controller for dc-to-dc or off-line fixed-frequency switching power supplies. The UCC28089 has dual alternating output stages in dual-alternating push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop and duty cycle is limited to less than 50%.

The UCC28089 is optimized for use as the primary-side companion controller for a cascaded converter that has secondary-side control. The device incorporates dead-time programming. The synchronization output also provides dead-time information. The retry and soft-start duration scales with the oscillator clock frequency for high performance fault recovery.

The UCC28089 also provides primary side under-voltage protection (UVLO), and over-current protection. Both the soft start and retry after fault durations scale with oscillator frequency for high performance. The turn-on/off UVLO thresholds are 10.5 V/8.0 V.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos Primary-Side Push-Pull Oscillator with Dead-Time Control datasheet (Rev. A) 25/08/2006
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018

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