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TPS54616 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS54616 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 16 page TPS54610 SLVS398D − JUNE 2001 − REVISED JULY 2003 www.ti.com 11 Figure 21 shows the schematic diagram for a reduced size, high frequency application using the TPS54610. The TPS54610 (U1) can provide up to 6 A of output current at a nominal output voltage of 1.8 V. A small size 0.56 uH inductor is used and the switching frequency is set to 680 kHz by R1. The compensation network is optimized for fast transient response as shown in Figure 21. For good thermal performance, the PowerPAD underneath the integrated circuit TPS54610 needs to be soldered well to the printed-circuit board. Application information is available in TI literature number SLVA107, Designing for Small-Size, High-Frequency Applications With Swift Family of Synchronous Buck Regulators. 6 VIN 24 23 22 21 20 VIN VIN VIN VIN 14 13 12 11 10 9 8 7 PH PH PH PH PH PH PH PH PH 5 BOOT 19 18 17 16 15 PGND PGND PGND PGND PGND POWERPAD AGND VSENSE COMP PWRGD SS/ENA SYNC RT 28 27 26 VBIAS 25 4 3 2 1 U1 TPS54610PWP C7 0.047 µF L1 0.56 µH C8 150 µF + C9 150 µF + C10 1 pF VO R2 10 k Ω C5 470 pF R3 39 Ω R5 1.47 k Ω VI C1 10 µF C2 10 µF R4 2.4 Ω C11 3300 pF C3 0.047 µF C4 1 µF C6 470 pF R6 1.5 k Ω C12 0.012 µF R1 71.5 k Ω Figure 21. Small Size, High Frequency Design Figure 22 10 µs/div TRANSIENT RESPONSE, 1.5-A to 4.5-A STEP |
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