TPS51220RHBR Datasheet

Current Mode PWM Controllers


The TPS51220RHBR is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220RHBR supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a widevariety of other applications. TPS51220RHBR Features •Resistor or Inductor DCR Current Sensing•QFN-32 (RHB)•Integrated Boot Strap MOSFET Switch•Output Discharge Function (Disable Option)•Thermal Shutdown (Non-Latch)•Powergood Output for Each Channel TPS51220RHBR Applications •Notebook Computer System and I/O Bus•Point of Load in LCD TV, MFP


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Manufacturer information

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