TPS51220RHBR

Product Summary

The TPS51220RHBR is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5V/3.3V system controller, enabling designers to cost effectively complete 2-cells to 4-cells notebook system power supply. The TPS51220RHBR supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltages ranging from 4.5V to 28V, and output voltages from 1V to 12V. 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 applications of the TPS51220RHBR include Notebook Computer System and I/O Bus, Point of Load in LCD TV, MFP.

Parametrics

TPS51220RHBR absolute maximum ratings: (1)VI, Input voltage range, VIN: -0.3 to 30 V; VBST1, VBST2: -0.3 to 35 V; VBST1, VBST2: -0.3 to 7 V; SW1, SW2: -2 to 30 V; CSP1, CSP2, CSN1, CSN2: -1 to 13.5 V; EN, EN1, EN2, VFB1, VFB2, TRIP, SKIPSEL1, SKIPSEL2, FUNC: -0.3 to 7 V; V5SW: -0.3 to 7 V; V5SW (to VREG5): -7 to 7 V; (2)VO, Output voltage range, DRVH1, DRVH2: -2 to 35 V; DRVH1, DRVH2: -0.3 to 7 V; DRVL1, DRVL2, COMP1, COMP2, VREG5, RF, VREF2, PGOOD1, PGOOD2: -0.3 to 7 V; VREG3: -0.3 to 3.6 V; (3)TJ, Operating junction temperature range: -40 to 125℃; (4)Tstg, Storage temperature: -55 to 150℃.

Features

TPS51220RHBR features: (1)Input Voltage Range: 4.5V to 28V; (2)Output Voltage Range: 1V to 12V; (3)Selectable Light Load Operation(Continuous/Auto Skip/Out-Of-Audio Skip); (4)Programmable Droop Compensation; (5)Voltage Servo Adjustable Soft Start; (6)200kHz to 1MHz Fixed Frequency PWM; (7)Selectable Current/D-CAP; (8)Mode Architecture; (9)180° Phase Shift Between Channels; (10)Resistor or Inductor DCR Current Sensing; (11)Powergood Output for Each Channel; (12)OCL/OVP/UVP/UVLO Protections(OVP Disable Option); (13)Thermal Shutdown (Non-Latch); (14)Output Discharge Function (Disable Option); (15)Integrated Boot Strap MOSFET Switch; (16)QFN32 (RHB).

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