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TPS51020

Texas Instruments
Part Number TPS51020
Manufacturer Texas Instruments
Description Step-Down Controller
Published Jun 6, 2022
Detailed Description TPS51020 ą SLUS564C − JULY 2003 − REVISED OCTOBER 2008 DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEPĆDOWN CONTR...
Datasheet PDF File TPS51020 PDF File

TPS51020
TPS51020

Overview
TPS51020 ą SLUS564C − JULY 2003 − REVISED OCTOBER 2008 DUAL, VOLTAGE MODE, DDR SELECTABLE, SYNCHRONOUS, STEPĆDOWN CONTROLLER FOR NOTEBOOK SYSTEM POWER FEATURES DESCRIPTION D Wide Input Voltage Range: 4.
5-V to 28-V D Selectable Dual and DDR Modes D Selectable Fixed Frequency Voltage Mode D Advanced Power Good Logic Monitors both Channels D Selectable Autoskip Mode D Integrated Boot Strap Diodes D 180° Phase Shift Between Channels D Integrated 5-V, 60-mA Regulator D Input Feedforward Control D 1% Internal 0.
85-V Reference D RDS(on) Overcurrent Detection (4200 ppm/°C) D Integrated OVP, UVP and Power Good Timers D 30-pin TSSOP Package The TPS51020 is a multi-function dualsynchronous step-down controller for notebook system power.
The part is specifically designed for high performance, high efficiency applications where the loss associated with a current sense resistor is unacceptable.
The TPS51020 utilizes feed forward voltage mode control to attain high efficiency without sacrificing line response.
Efficiency at light load conditions can be maintained high as well by incorporating autoskip operation.
A selectable, Suspend to RAM (STR) supported, DDR option provides a one chip solution for all switching applications from 5-V/3.
3-V supply to a complete DDR termination solution.
ORDERING INFORMATION APPLICATIONS D Notebook Computers System Bus and I/O TA −40°C to 85°C D DDR I or DDR II Termination VIN SIMPLIFIED VO1 APPLICATION DIAGRAM VO1 VIN VO2 VREG5 VO2 1 INV1 TPS51020 VBST1 30 2 COMP1 OUT1_U 29 3 SSTRT1 LL1 28 4 SKIP OUT1_D 27 5 VO1_VDDQ OUTGND1 26 6 DDR TRIP1 25 7 GND VIN 24 8 REF_X 9 ENBL1 10 ENBL2 TRIP2 23 22 VREG5 21 REG5_IN 11 VO2 12 PGOOD OUTGND2 20 OUT2_D 19 13 SSTRT2 LL2 18 14 COMP2 OUT2_U 17 15 INV2 VBST2 16 EXT_5V VIN PLASTIC TSSOP (DBT) TPS51020DBT TPS51020DBTR (T&R) VO1 VIN VREG5 VO2 UDG−03144 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texa...


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