
- Stock: In Stock
- Brand: Unbranded
- Model: 1-CHIP1151
- SKU: 1-CHIP1151
Realtime Stock
Controller IC Chip - TPS51220A 51220A QFN-32 chip for laptop- Integrated portable calculator chip(SKU.1-CHIP1151)
Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
The TPS51220A is a dual synchronous buck regulator controller with two 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 TPS51220A supports high efficiency, fast transient response, and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 32 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 wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out-of-phase. The TPS51220A can also synchronize to the extemal clock, and the interleaving ratio can be adjusted by its duty. The TPS51220A is available in the 32-pin 5x5/4 x4 OFN package and is specified from —40°C to 85°C.
• Input Voltage Range: 4.5 V to 32 V • Output Voltage Range: 1 V to 12 V • Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audiow Skip) • Programmable Droop Compensation • Voltage Servo Adjustable Soft Start • 200-kHz to 1-MHz Fixed-Frequency PWM Selectable Current/ D-CAP'" Mode Architecture • 180° Phase Shift Between Channels • Resistor or Inductor DCR Current Sensing • Adaptive Zero Crossing Circuit
Powergood Output for Each Channel OCL/OVP/UVP/UVLO Protections (OVP Disable Option) • Thermal Shutdown (Non-Latch) • Output Discharge Function (Disable Option) • Integrated Boot Strap MOSFET Switch • QFN-32 (RTV/RSN) Package
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