Manuale d’uso / di manutenzione del prodotto TPS54810 del fabbricante Texas Instruments
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TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUAR Y 2005 4-V TO 6-V INPUT , 8-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRA TED FETS (SWIFT ™ ) 6,4 mm X 9,7 mm FEA TURES D 30-m Ω MOSFET Switches for High Efficiency at 8-A Continuous Output D 0.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUAR Y 2005 www.ti.com 2 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 3 ELECTRICAL CHARACTERISTICS T J = − 40 ° C to 125 ° C, V I = 4 V to 6 V unless otherwise noted P ARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPL Y VOL T AGE, VIN Input voltage range, VIN 4.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUAR Y 2005 www.ti.com 4 ELECTRICAL CHARACTERISTICS CONTINUED T J = − 40 ° C to 125 ° C, V I = 4 V to 6 V unless otherwise noted P ARAMETER TEST C.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUAR Y 2005 www.ti.com 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 AGND VSENSE COMP PWRGD BOOT PH PH PH PH PH PH PH P.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 6 FUNCTIONAL BLOCK DIAGRAM Falling Edge Deglitch Enable Comparator 1.2 V VIN 3.8 V Hysteresis: 0.03 V 2.5 µ s Falling and Rising Edge Deglitch 2.5 µ s VIN UVLO Comparator Hysteresis: 0.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 7 TYPICAL CHARACTERISTICS Figure 1 0 10 20 30 40 50 60 − 40 − 15 10 35 60 85 1 10 135 V I = 5 V , I O = 8 A DRAIN-SOURCE ON-.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 8 APPLICA TION INFORMA TION Figure 9 shows the schematic diagram for a typical TPS54810 application. The TPS54810 (U1) can provide up to 8 A of output current at a nominal output voltage of 1.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 9 PCB LA YOUT Figure 10 shows a generalized PCB layout guide for the TPS54810 Th e VIN pins are connected together on the printed-circuit board (PCB) and bypassed with a low-ESR ceramic-bypass capacitor .
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 10 AGND BOOT VSENSE COMP PWRGD PH PH PH PH PH PH PH PH PH RT SYNC SS/ENA VBIAS VIN VIN VIN VIN VIN PGND PGND PGND PGND PGND VOUT.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 11 LA YOUT CONSIDERA TIONS FOR THERMAL PERFORMANCE For operation at full rated load current, the analog ground plane must provide adequate heat dissipating area.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 12 PERFORMANCE GRAPHS (FROM APPLICA TION CIRCUIT SHOWN IN FIGURE 9) Fi g ure 12 I O − Output Current − A Efficiency − % EFFICIENCY vs OUTPUT CURRENT 50 55 60 65 70 75 80 85 90 95 100 0246 8 1 0 V I = 5 V V O = 1.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 13 DET AILED DESCRIPTION Under V oltage Lock Out (UVLO) The TPS54810 incorporates an under voltage lockout circuit to keep the device disabled when the input voltage (VIN) is insufficient.
TPS54810 SL VS420B − MARCH 2002 − R EVISED FEBRUARY 2005 www.ti.com 14 particular application needs. T ype 2 or type 3 compensa- tion can be employed using external compensation components. PWM Control Signals from the error amplifier output, oscillator , and current limit circuit are processed by the PWM control logic.
PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3) TPS54810PWP ACTIVE HTSSOP PWP 28 50 Green (RoHS & no.
TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W (mm) Pin1 Quadrant TPS54810PWPR HTSSOP PWP 28 2000 330.0 16.4 6.9 10.2 1.8 12.0 16.
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS54810PWPR HTSSOP PWP 28 2000 346.0 346.0 33.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments TPS54810 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments TPS54810 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments TPS54810 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments TPS54810 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments TPS54810, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments TPS54810.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments TPS54810. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments TPS54810 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
