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.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | UCCx895 BiCMOS Advanced Phase-Shift PWM Controller datasheet (Rev. Q) | PDF | HTML | 09 Okt 2019 |
| Application note | UCC2895 Layout and Grounding Recommendations | 09 Apr 2009 | ||
| EVM User's guide | UCC3895EVM-001 Configuring The UCC3895 For Direct Control Driven Synchronous Re (Rev. B) | 02 Dez 2008 | ||
| Application note | Current Doubler Rectifier Offers Ripple Current Cancellation | 21 Sep 2004 | ||
| Application note | Synchronous Rectifiers of a Current Doubler | 27 Feb 2003 | ||
| Application note | UCC3895 CD Output Asymmetric Duty Cycle Operation | 21 Aug 2002 | ||
| Application note | A Power Management Solution for Efficient, Multiple Output Applications | 04 Okt 2001 | ||
| Application note | A Comparison Between the BiCMOS UCC3895 Phase Shift Controller and the UC3875 | 22 Feb 2001 | ||
| Application note | DN-63 The Current-Doubler Rectifier: An Alternative Rectification Technique | 12 Jan 2001 |
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The UCC3895EVM-001 is an isolated 48V input phase shifted full bridge converter providing an output of 3.3V at 15A. Using the AB outputs of the UCC3895, a novel technique for direct control driven synchronous rectification is demonstrated.
| Gehäuse | Pins | Herunterladen |
|---|---|---|
| CDIP (J) | 20 | Optionen anzeigen |
| LCCC (FK) | 20 | Optionen anzeigen |
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