Phase Shift Resonant Controller

The UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combi- nation with resonant, zero-voltage switching for high efficiency performance at high frequencies. This family of circuits may be configured to provide control in either voltage or current mode operation, with a separate over-current shutdown for fast fault protection. A programmable time delay is provided to insert a dead-time at the turn-on of each output stage. This delay, providing time to allow the resonant switching action, is independently controllable for each output pair (A-B, C-D). With the Oscillator capable of operation at frequencies in excess of 2MHz, overall switching frequencies to 1MHz are practical. In addition to the stan- dard free running mode, with the CLOCKSYNC pin, the user may configure these devices to accept an external Clock synchronization signal, or may lock together up to 5 units with the operational frequency determined by the fastest device. Protective features include an undervoltage lockout which maintains all out- puts in an active-low state until the supply reaches a 10.75V threshold. 1.5V hysteresis is built in for reliable, boot-strapped chip supply. Over-current protection is provided, and will latch the outputs in the OFF state within 70nsec of a fault. The current-fault circuitry implements full-cycle restart operation By Texas Instruments
UC1876 's PackagesUC1876 's pdf datasheet
UC3875QPTR PLCC
UC1877
UC1878
UC2877
UC2878
UC3878




UC1876 Pinout, Pinouts
UC1876 pinout,Pin out
This is one package pinout of UC1876,If you need more pinouts please download UC1876's pdf datasheet.

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