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DFE252012F-R47M Datasheet(PDF) 88 Page - Analog Devices |
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DFE252012F-R47M Datasheet(HTML) 88 Page - Analog Devices |
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88 / 122 page  BITFIELD BITS TYPE DESCRIPTION DECODE M3_BBRK 7:6 O Buck Master3 Body-Braking Control Setting 0x0 = Disable. 0x1 = Body braking for 8μs. 0x2 = Body braking for 8μs followed by FPWM for 8μs. 0x3 = Reserved. M3_ADIS10 0 5 O Buck Master3 100Ω Active Discharge 0x0 = Disable. 0x1 = Enable. M3_ADIS1 4 O Buck Master3 1Ω Active Discharge: Note that 1Ω active discharge must be disabled when falling slew-rate function of corresponding output is disabled (M3_FSREN = 0) 0x0 = Disable. 0x1 = Enable (active for 1ms after soft-stop is completed). M3_FTRAK 3 O Buck Master3 Internal Frequency Tracking Control 0x0 = Disable. 0x1 = Enable. M3_REFRE SH 2 O Buck Master3 Bootstrap Refresh Interval Control 0x0 = 128μs. 0x1 = 10μs. M3_FSREN 1 O Buck Master3 Falling Slew-Rate Control 0x0 = Disable (buck does not sink current from COUT in skip or LP-skip mode). 0x1 = Enable (buck operates in FPWM mode to sink current from COUT when its VOUT(TARGET) is lower than the actual VOUT). M3_FPWM 0 O Buck Master3 Forced-PWM Control 0x0 = Disable (automatic skip mode operation under light load condition). 0x1 = Enable (OR logic with FPWM_M3 input). M3_CFG4 (0x4A) BIT 7 6 5 4 3 2 1 0 Field M3_SS_ENV[1:0] M3_SS_FREQ[1:0] M3_SSM_PAT[1:0] M3_FREQ[1:0] Reset 0x0 0x0 0x0 0x1 Access Type Write, Read Write, Read Write, Read Write, Read BITFIELD BITS TYPE DESCRIPTION DECODE M3_SS_EN V 7:6 O Buck Master3 Spread Spectrum Envelope Setting 0x0 = Disable. 0x1 = ±8%. 0x2 = ±12%. 0x3 = ±16%. M3_SS_FR EQ 5:4 O Buck Master3 Spread Spectrum Frequency Setting 0x0 = 1kHz. 0x1 = 3kHz. 0x2 = 5kHz. 0x3 = 7kHz. M3_SSM_P AT 3:2 O Buck Master3 Spread Spectrum Pattern Setting 0x0 = Triangular pattern (0001b to 1111b). 0x1 = Pseudo-random polynomial (x4 + x + 1). 0x2 = Pseudo-random polynomial (x4 + x3 + 1). 0x3 = Pseudo-random polynomial (alternating x4 + x + 1 and x4 + x3 + 1 every cycle). MAX77542 16VIN/16A, Quad-Phase High-Efficiency Buck Converter www.analog.com Analog Devices | 88 |
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