UCC28089

AKTIV

Primärseitiger Push-Pull-Oszillator mit Totzeitsteuerung

Produktdetails

Vin (max) (V) 14 Operating temperature range (°C) -40 to 105 Control mode Current Topology Full bridge, Half bridge, Push pull Rating Catalog Duty cycle (max) (%) 50
Vin (max) (V) 14 Operating temperature range (°C) -40 to 105 Control mode Current Topology Full bridge, Half bridge, Push pull Rating Catalog Duty cycle (max) (%) 50
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet Primary-Side Push-Pull Oscillator with Dead-Time Control datasheet (Rev. A) 25 Aug 2006
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

Design und Entwicklung

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