DESCRIPTION
●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 combination 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.
●FEATURES
●•Zero to 100% Duty Cycle Control
●•Programmable Output Turn-On Delay
●•Compatible with Voltage or Current Mode Topologies
●•Practical Operation at Switching Frequencies to 1MHz
●•Four 2A Totem Pole Outputs
●•10MHz Error Amplifier
●•Undervoltage Lockout
●•Low Startup Current –150µA
●•Outputs Active Low During UVLO
●•Soft-Start Control
●•Latched Over-Current Comparator With Full Cycle Restart
●•Trimmed Reference
