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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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TPS54613 Fiches technique(PDF) 8 Page - Texas Instruments |
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TPS54613 Fiches technique(HTML) 8 Page - Texas Instruments |
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8 / 16 page  TPS54610 SLVS398D − JUNE 2001 − REVISED JULY 2003 www.ti.com 8 APPLICATION INFORMATION Figure 10 shows the schematic diagram for a typical TPS54610 application. The TPS54610 (U1) can provide greater than 6 A of output current at a nominal output voltage of 3.3 V. For proper thermal performance, the exposed thermal PowerPAD underneath the integrated circuit package must be soldered to the printed-circuit board. VIN 24 23 22 21 20 VIN VIN VIN VIN 14 13 12 11 10 9 8 7 6 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 C8 10 µF C7 0.047 µF L1 4.7 µH C9 470 µF 4 V + C10 470 µF 4 V + C11 100 pF VO R5 1.74 k Ω C6 8200 pF R4 10 k Ω R3 3.74 k Ω R1 9.09 k Ω C5 5600 pF C3 120 pF R2 10 k Ω PWRGD C4 0.1 µF C1 0.047 µF C2 220 µF 10 V + VI Figure 10. Application Circuit COMPONENT SELECTION The values for the components used in this design example were selected using the SWIFT designer software tool. SWIFT designer provides a complete design environment for developing dc-dc converters using the TPS54610. INPUT FILTER The input to the circuit is a nominal 5 VDC. The input filter C2 is a 220- µF POSCAP capacitor, with a maximum allowable ripple current of 3 A. C8 provides high frequency decoupling of the TPS54610 from the input supply and must be located as close as possible to the device. Ripple current is carried in both C2 and C8, and the return path to PGND must avoid the current circulating in the output capacitors C9 and C10. FEEDBACK CIRCUIT The resistor divider network of R3 and R4 sets the output voltage for the circuit at 3.3 V. R4, along with R1, R5, C3, C5, and C6 form the loop compensation network for the circuit. For this design, a Type 3 topology is used. |
Numéro de pièce similaire - TPS54613 |
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Description similaire - TPS54613 |
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