- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述：具有死区时间控制的初级侧推挽振荡器
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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.
- 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
- Topology
- Full-Bridge, Half-Bridge, Push-Pull
- Duty cycle (Max) (%)
- 50
- Supply voltage (Max) (V)
- 14
- UVLO thresholds on/off (V)
- 10.5/8.0
- Features
- Dead Time Control, Soft Start, Synchronization Pin
- Operating temperature range (C)
- -40 to 105
- Rating
- Catalog
- Frequency (Max) (kHz)
- 1000
- Gate drive (Typ) (A)
- 1
UCC28089的完整型号有：UCC28089D、UCC28089DR，以下是这些产品的关键参数及官网采购报价：
UCC28089D，工作温度：-40 to 105，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28089D的批量USD价格：1.008（1000+）
UCC28089DR，工作温度：-40 to 105，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28089DR的批量USD价格：.84（1000+）
UCC28089D，工作温度：-40 to 105，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28089D的批量USD价格：1.008（1000+）
UCC28089DR，工作温度：-40 to 105，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC28089DR的批量USD价格：.84（1000+）
