DESCRIPTION
●The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode™ operation at light load for high efficiency.
●FEATURES
●• D-CAP2™ Mode Enables Fast Transient Response
●• Low Output Ripple and Allows Ceramic Output Capacitor
●• Wide VCC Input Voltage Range: 4.5 V to 18 V
●• Wide VIN Input Voltage Range: 2 V to 18 V
●• Output Voltage Range: 0.76 V to 5.5 V
●• Highly Efficient Integrated FET’s Optimized for Lower Duty Cycle Applications
● – 160 mΩ (High Side) and 110 mΩ (Low Side)
●• High Efficiency, less than 10 μA at shutdown
●• Auto-Skip Eco-Mode™ for High Efficiency at Light Load
●• High Initial Bandgap Reference Accuracy
●• Adjustable Soft Start
●• Pre-Biased Soft Start
●• 700-kHz Switching Frequency (fSW)
●• Cycle By Cycle Over Current Limit
●• Power Good Output
●• Auto-Skip Mode
●APPLICATIONS
●• Wide Range of Applications for Low Voltage System
● – Digital TV Power Supply
● – High Definition Blu-ray Disc™ Players
● – Networking Home Terminal
● – Digital Set Top Box (STB)
