UC1875-SP - Texas Instruments

UC1875-SP Phase Shift Resonant Controller

The UC1875-SP 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 circuit may be configured to provide control in either voltage .

Features

•1 QML-V Qualified, SMD 5962-94555
• Rad-Tolerant: 50 kRad (Si) TID (1)
• Zero to 100% Duty Cycle Control
• Programmable Output Turn-On Delay
• Compatible with Voltage or Current Mode Topologies
• Practical Operation at Switching Frequencies to 1 MHz
• Four 2-A Totem Pole Outputs
• 10-MHz Error Amplifier
• Undervoltage Lockout (UVLO)
• Low Startup Current
  – 150 µA
• Outputs Active Low During UVLO
• Soft-Start Control
• Latched Overcurrent Comparator With Full Cycle Restart
• Trimmed Reference 2 Applications Power FPGAs (1) Radiation tolerance is a typical value based upon initial device qualif.