UCC3895N

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UCC3895N

BiCMOS Advanced Phase Shift PWM Controller

Packaging

Package | PIN: N | 20
Temp: C (0 to 70)
Carrier: Partial Tube
Qty Price
1-9 $8.73
10-24 $7.85
25-99 $7.33
100-249 $6.57
250-499 $6.14
500-749 $5.34
750-999 $4.62
1000+ $4.53

Features

  • Programmable-Output Turnon Delay
  • Adaptive Delay Set
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak Current-Mode, or Average
    Current-Mode Control
  • Programmable Softstart, Softstop 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 UVLO

Texas Instruments  UCC3895N

The UCC3895 is a phase-shift 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. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.

While the UCC3895 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 the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.