See datasheet for actual packaging/pinout drawings

Package | PIN:

PW | 24

Temp:

Q (-40 to 125)

ECO Plan:

Green (RoHS & no Sb/Br)

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UCC28951QPWRQ1-Phase-Shifted Full-Bridge Controller for Wide Input Voltage Range

The UCC28951-Q1 device is a new enhanced version of the UCC28950-Q1; it is a fully compatible drop-in replacement for the UCC28950-Q1. Reference application note Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 (SLUA853) for choosing the controller to best fit your application. The UCC28951-Q1 implements advanced control of the full-bridge along with active control of the synchronous rectifier (SR) output stage.

Programmable delays ensure ZVS operation over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side SRs, maximizing overall system efficiency.

The UCC28951-Q1 offers multiple light-load management features including burst mode and dynamic SR on/off control when transitioning in and out of Discontinuous Current Mode (DCM) operation.

In addition, the UCC28951-Q1 includes support for current or voltage mode control. Programmable switching frequency up to 1 MHz and a wide set of protection features including cycle-by-cycle current limit, UVLO, and thermal shutdown.

The UCC28951-Q1 is available in 24-pin TSSOP package and is RoHS compliant.

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