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UC2856Q

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工作温度范围为 -40°C 至 125°C 的 40V、1.5A 电流模式 1MHz PWM 控制器

产品详情

Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 UVLO thresholds on/off (V) 7.7/7 Operating temperature range (°C) -40 to 125 Rating Automotive Gate drive (typ) (A) 1.5 Vin (max) (V) 40
Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 UVLO thresholds on/off (V) 7.7/7 Operating temperature range (°C) -40 to 125 Rating Automotive Gate drive (typ) (A) 1.5 Vin (max) (V) 40
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Pin-for-Pin Compatible With the UC2846
  • 65-ns Typical Delay From Shutdown to
    Outputs and 50-ns Typical Delay From
    Sync to Outputs
  • Improved Current Sense Amplifier With
    Reduced Noise Sensitivity
  • Differential Current Sense With 3-V
    Common Mode Range
  • Trimmed Oscillator Discharge Current for
    Accurate Deadband Control
  • Accurate 1-V Shutdown Threshold
  • High Current Dual Totem Pole
    Outputs (1.5-A peak)
  • TTL Compatible Oscillator SYNC Pin
    Thresholds
  • 4-kV ESD Protection

  • Pin-for-Pin Compatible With the UC2846
  • 65-ns Typical Delay From Shutdown to
    Outputs and 50-ns Typical Delay From
    Sync to Outputs
  • Improved Current Sense Amplifier With
    Reduced Noise Sensitivity
  • Differential Current Sense With 3-V
    Common Mode Range
  • Trimmed Oscillator Discharge Current for
    Accurate Deadband Control
  • Accurate 1-V Shutdown Threshold
  • High Current Dual Totem Pole
    Outputs (1.5-A peak)
  • TTL Compatible Oscillator SYNC Pin
    Thresholds
  • 4-kV ESD Protection

The UC2856 is a high performance version of the popular UC2846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the current sense output is slew rate limited to reduce noise sensitivity. Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

A low impedance TTL compatible sync output has been implemented with a 3-state function when used as a sync input.

Internal chip grounding has been improved to minimize internal noise caused when driving large capacitive loads. This, in conjunction with the improved differential current sense amplifier, results in enhanced noise immunity.

Other features include a trimmed oscillator current (8%) for accurate frequency and dead time control; a 1 V, 5% shutdown threshold; and 4 kV minimum ESD protection on all pins.

The UC2856 is a high performance version of the popular UC2846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the current sense output is slew rate limited to reduce noise sensitivity. Fast 1.5-A peak output stages have been added to allow rapid switching of power FETs.

A low impedance TTL compatible sync output has been implemented with a 3-state function when used as a sync input.

Internal chip grounding has been improved to minimize internal noise caused when driving large capacitive loads. This, in conjunction with the improved differential current sense amplifier, results in enhanced noise immunity.

Other features include a trimmed oscillator current (8%) for accurate frequency and dead time control; a 1 V, 5% shutdown threshold; and 4 kV minimum ESD protection on all pins.

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类型 标题 下载最新的英语版本 日期
* 数据表 UC2856Q: Improved Current Mode PWM Controller 数据表 (Rev. A) 2011年 5月 26日

设计和开发

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封装 引脚 下载
SOIC (DW) 16 查看选项

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包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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