Product Summary

The TPS51020 is a multi-function dualsynchronous step-down controller for notebook system power. The TPS51020 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. The applications of the TPS51020 include Notebook Computers System Bus and I/O and DDR I or DDR II Termination

Parametrics

TPS51020 absolute maximum ratings: (1)Input voltage range, VBST1, VBST2: -0.3 to 35V; VBST1, VBST2 (with respect to LL ): -0.3 to 7V; VIN, TRIP1, TRIP2, ENBL1, ENBL2, DDR: -0.3 to 30V; SKIP, INV1, INV2: -0.3 to 7V; (2)Ouput voltage range, OUT1_U, OUT2_U: -1 to 35V; OUT1_U, OUT2_U (with respect to LL ): -0.3 to 7 V; LL1, LL2: -1 to 30V; REF_X: -0.3 to 15V; PGOOD, VO1_VDDQ, VO2, OUT1_D, OUT2_D, COMP1, COMP2, VREG5, SSTRT1, SSTRT2: -0.3 to 7V; OUTGND1, OUTGND2: -0.3 to 0.3V; (3)Output current range, VREG5: 70mA; REF_X: 7mA; (4)Operating free-air temperature range, TA: -40 to 85℃; (5)Storage temperature range, Tstg: -55 to 150℃; (6)Junction temperature range, TJ: -40 to 125℃; (7)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 300℃.

Features

TPS51020 features: (1)Wide Input Voltage Range: 4.5-V to 28-V; (2)Selectable Dual and DDR Modes; (3)Selectable Fixed Frequency Voltage Mode; (4)Integrated Selectable Output Discharge; (5)Advanced Power Good Logic Monitors both Channels; (6)Selectable Autoskip Mode; (7)Integrated Boot Strap Diodes; (8)180° Phase Shift Between Channels; (9)Integrated 5-V, 60-mA Regulator; (10)Input Feedforward Control; (11)1% Internal 0.85-V Reference; (12)RDS(on) Overcurrent Detection (4200 ppm/℃); (13)Integrated OVP, UVP and Power Good Timers; (14)30-pin TSSOP Package.

Diagrams

TPS51020 simplified application diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TPS51020
TPS51020

Other


Data Sheet

Negotiable 
TPS51020DBT
TPS51020DBT

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DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1: $3.37
1-25: $2.75
25-100: $2.12
100-250: $1.99
TPS51020DBTG4
TPS51020DBTG4

Texas Instruments

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Data Sheet

0-1: $3.83
1-25: $2.75
25-100: $2.30
100-250: $1.99
TPS51020DBTR
TPS51020DBTR

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DC/DC Switching Controllers Dual DDR selectable Sync buck Controller

Data Sheet

0-1575: $1.60
1575-2000: $1.58
TPS51020DBTRG4
TPS51020DBTRG4

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Data Sheet

0-1570: $1.61
1570-2000: $1.61
TPS51020EVM-001
TPS51020EVM-001

Texas Instruments

Power Management IC Development Tools TPS51020-001 Eval Mod

Data Sheet

0-1: $33.48