TPS53819ARGTR datasheet(10/43 Pages) TI

Part #	TPS53819ARGTR

Description	High-Performance, Eco-mode, Single Synchronous Step-Down Controller with PMBus

Download	43 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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10 / 43 page

V

IN = 12 V, V OUT = 1.2 V, I OUT = 0 A, 425 kHz, FCCM

EN (5 V/div)

VOUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

Time (4 ms/div)

V

IN = 12 V, V OUT = 1.2 V, I OUT = 20 A, 425 kHz,

EN (5 V/div)

VOUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

Time (40 µs/div)

V

IN = 12 V, V OUT = 1.2 V, I OUT = 0 A, 425 kHz, FCCM

EN (5 V/div)

V

OUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

0.5 V pre-biased

Time (0.4 ms/div)

V

IN = 12 V, V OUT = 1.2 V, I OUT = 0 A, 425 kHz, DCM

EN (5 V/div)

VOUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

Time (4 ms/div)

V

IN = 12 V, V OUT = 1.2 V, I OUT = 20 A, 425 kHz

EN (5 V/div)

VOUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

Time (0.4 ms/div)

V

IN = 12 V, V OUT = 1.2 V, I OUT = 0 A, 425 kHz, DCM

EN (5 V/div)

V

OUT (0.5 V/div)

SW (10 V/div)

PGOOD (5 V/div)

0.5 V pre-biased

Time (0.4 ms/div)

TPS53819A

SLUSB56 – NOVEMBER 2012

www.ti.com

TYPICAL CHARACTERISTICS (continued)

Figure 7. Full-Load Start-Up Waveforms

Figure 8. Pre-Bias Start-Up Waveforms with DCM

Figure 9. Pre-Bias Start-Up Waveforms with FCCM

Figure 10. No-Load Shutdown Waveforms with DCM

Figure 11. No-Load Shutdown Waveforms with FCCM

Figure 12. Full-Load Shutdown Waveforms

10

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