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PTH05060YAH Datasheet(PDF) 9 Page - Texas Instruments |
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PTH05060YAH Datasheet(HTML) 9 Page - Texas Instruments |
9 / 19 page www.ti.com Designing for Very Fast Load Transients PTH03060Y PTH05060Y, PTH12060Y SLTS222A–MARCH 2004–REVISED OCTOBER 2005 APPLICATION INFORMATION (continued) Table 1. Input/Output Capacitors (continued) Capacitor Characteristics Quantity Capacitor Vendor, Vendor Working Max ESR Max Ripple Physical Value Input Output Type/Series (Style) Part Number Voltage at 100 kHz Current at 85°CSize (µF) Bus Bus (V) (Ω) (Irms) (mA) (mm) Panasonic, Poly-Aluminum: S/SE (SMD) 6.3 180 0.005 4000 7,.3×4,3×4,2 2 N/R(2) EEFSE0J181R Sanyo SEPC, Os-con (Radial) 16 470 0.010 6100 10×13 1 ≤1 16SEPC470M SVP (SMD) 6.3 470 0.015 4210 8×11,9 1 ≤2 6SVP470M TPE, Poscap (SMD) 6.3 330 0.025 2400 7.3×4.3 1 ≤3 6TPE330ML AVX, Tantalum 7.3L ×5.7W TPS Series III 10 470 0.045 1915 1 ≤5 TPSE477M010R0045 ×4.1H TPS (SMD) 10 470 0.100 1432 1 ≤5 TPSV477M010R0100 Kemet, Poly-Tantalum 4.3W ×7.3L T520 (SMD) 10 330 0.040 1800 1 1 T520X337M010AS ×4.0H T530 (SMD) 10 330 0.010 >5200 1 ≤1 T530X337M010ASE010 Vishay-Sprague 595D, Tantalum (SMD) 10 330 0.100 1040 1 ≤5 595D377x0010D2T 594D, Tantalum (SMD) 10 330 0.045 2360 1 ≤5 594D337X0016R2T 7.2L×6W 94SA,Poly-Aluminum (SMD) 6.3 330 0.025 3500 1 ≤3 94SA337X06R3FBP ×4.1H 94SVP, Poly-Aluminum 6.3 470 0.017 3960 10 ×10,5 1 ≤2 94SVP477X06R3E12 (SMD) 8,3x12 Kemet, Ceramic X5R (SMD) 16 10 0.002 – 3225 mm 1 ≤5 C1210C106M4PAC 6.3 47 0.002 3225 mm 1 ≤5 C1210C476K9PAC Murata, Ceramic X5R (SMD) 6.3 100 0.002 – 3225 mm 1(3) ≤3 GRM32ER60J107M 6.3 47 3225 mm 1(3) ≤5 GRM32ER60J476M 16 22 1(3) ≤5 GRM32ER61C226K 16 10 1(3) ≤5 GRM32DR61C106K TDK, Ceramic X5R (SMD) 6.3 100 0.002 – 3225 mm 1(3) ≤3 C3225X5R0J107MT 6.3 47 3225 mm 1(3) ≤5 C3225X5R0J476MT 16 22 1(3) ≤5 C3225X5R1C226MT 16 10 1(3) ≤5 C3225X5R1C106MT (2) N/R – Not recommended. The capacitor does not meet the minimum operating limits. (3) A ceramic capacitor may be used to compliment electrolytic types at the input to further reduce high-frequency ripple current. The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of 1 A/µs. The typical voltage deviation for this load transient is given in the data sheet specification table using the optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter's regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation with any DC/DC converter once the speed of the transient exceeds its bandwidth capability. If the target application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the capacitors selected. If the transient performance requirements exceed that specified in the data sheet, or the total amount of load capacitance is above 5500 µF, the selection of output capacitors becomes more important. 9 |
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