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DFE252012F-R47M Datasheet(PDF) 14 Page - Analog Devices |
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DFE252012F-R47M Datasheet(HTML) 14 Page - Analog Devices |
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14 / 122 page  Electrical Characteristics—Quad-Phase Configurable Buck Converter (continued) (VSYS = VINx = 12V, VOUT1 = 0.8V (M1_RNG = 0x0), VOUT2 = 1.1V (M2_RNG = 0x1), VOUT3 = 1.8V (M3_RNG = 0x1), VOUT4 = 3.3V (M4_RNG = 0x2), single-phase configuration, VCE = 1.8V, VIO = 1.8V, TA = TJ = -40°C to +125°C, typical values are at TA = TJ = +25°C, unless otherwise noted. Note 2.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Ramp-Up Slew Rate (Note 6) ∆VOUT/∆t Mx_RU_SR[2:0] = 0x0 0.15 mV/μs Mx_RU_SR[2:0] = 0x1 0.625 Mx_RU_SR[2:0] = 0x2 1.25 Mx_RU_SR[2:0] = 0x3 2.5 Mx_RU_SR[2:0] = 0x4 5 Mx_RU_SR[2:0] = 0x5 10 Mx_RU_SR[2:0] = 0x6 20 Mx_RU_SR[2:0] = 0x7 40 Ramp-Down Slew Rate (Note 6) ∆VOUT/∆t Mx_RD_SR[2:0] = 0x0 -0.15 mV/μs Mx_RD_SR[2:0] = 0x1 -0.625 Mx_RD_SR[2:0] = 0x2 -1.25 Mx_RD_SR[2:0] = 0x3 -2.5 Mx_RD_SR[2:0] = 0x4 -5 Mx_RD_SR[2:0] = 0x5 -10 Mx_RD_SR[2:0] = 0x6 -20 Mx_RD_SR[2:0] = 0x7 -40 Slew-Rate Accuracy REFDAC slew-rate accuracy -5 +5 % Turn-On Delay tDLY Delay from rising edge of EN_Mx (MFIOx) signal to VOUTx ramping start-off VLx is pre-enabled 90 110 μs VLx is not pre- enabled 110 150 FREQUENCY TRACKING External Frequency Tracking Lockable Range (Note 6) FFTRAK Expressed as a percentage of the nominal frequency set by Mx_FREQ[1:0] 95 105 % SPREAD-SPECTRUM Modulation Frequency (Note 6) FSS_MOD Mx_SS_FREQ[1:0] = 0x0 1 kHz Mx_SS_FREQ[1:0] = 0x1 3 Mx_SS_FREQ[1:0] = 0x2 5 Mx_SS_FREQ[1:0] = 0x3 7 Modulation Envelope ΔFSS Mx_SS_ENV[1:0] = 0x1 ±8 % Mx_SS_ENV[1:0] = 0x2 ±12 Mx_SS_ENV[1:0] = 0x3 ±16 POWER-OK AND SHORT-CIRCUIT PROTECTION Power-OK Rising Threshold VPOK_R Expressed as a percentage of VOUT 77 82 87 % Power-OK Falling Threshold VPOK_F Expressed as a percentage of VOUT 73 78 83 % MAX77542 16VIN/16A, Quad-Phase High-Efficiency Buck Converter www.analog.com Analog Devices | 14 |
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