Datasheet SIC466, SiC467, SiC468, SiC469 (Vishay) - 9
| Manufacturer | Vishay |
| Description | 4.5 V to 60 V Input, 2 A, 4 A, 6 A, 10 A microBUCK DC/DC Converter |
| Pages / Page | 24 / 9 — SiC466, SiC467, SiC468, SiC469. Power Good. Fig. 8 - PGOOD Window and … |
| File Format / Size | PDF / 955 Kb |
| Document Language | English |
SiC466, SiC467, SiC468, SiC469. Power Good. Fig. 8 - PGOOD Window and Timing Diagram. SiC46x microBUCK FAMILY SCHEMATIC. SiC466
Model Line for this Datasheet
Text Version of Document
SiC466, SiC467, SiC468, SiC469
www.vishay.com Vishay Siliconix
Power Good
SiC46x’s power good is an open-drain output. Pull PGOOD pin high up to 5 V through a 10K resistor to use this signal. Power good window is shown in the Fig. 8. If voltage level VFB_Rising_Vth_OV (typ. = 0.96 V) VFB_Falling_Vth_OV on FB pin is out of this window, PG signal is de-asserted by (typ. = 0.91 V) pulling down to GND. To prevent false triggering during Vref (0.8 V) transient events, P VFB_Falling_Vth_UV GOOD has a 25 μs blanking time. V (typ. = 0.72 V) VFB_Rising_Vth_UV FB (typ. = 0.77 V) Pull-high PG Pull-low
Fig. 8 - PGOOD Window and Timing Diagram SiC46x microBUCK FAMILY SCHEMATIC
EN R_EN_H R_EN_L Heading 560K DNP t o 3 o 3. t NC PG b o F o μ R_ R_PGD _b 1 Notes in small C 0. 102K Css 33nF black text near 3 component EN 6 5 4 18 2 19 Rmode values refer to E2 E1 SS Mode 27 Vishay SiC46x S S NC 1 spreadsheet VCIN A A OOT OOD 2K B Cdd G 29 calcualtor VIN-PAD 26 PH PH P VDD references 7 VIN1 1μF +Vin 8 25 ILIMIT VIN2 6V to 60V Cin_D R_fsw 0.1μF 28 AGND-PAD
SiC466
FSW 24 30 PGND-PAD 52.3K
SiC467
9 23 AGND PGND1
SiC468
10 PGND2 R_FB_L
SiC469
VFB 22 11 PGND3 10K Cin 17 PGND 21 NC V 47μF R T L W1 W2 W3 OU G VD S S S V AGND 15 16 12 13 14 20 R_FB_H 52.3K Analog ground +VOUT = 5 V (A ), and power GND Cdrv ground (P ) L 0.1μF 64 μF 64 μF GND are tied internally 4.7μF Cout_D Cout_C Cout_B in the SiC46x PGND
Fig. 9 - SiC467 Configured for 6 V to 60 V Input, 5 V Output at 6 A, 500 kHz Operation with Power Save Mode Enabled all Ceramic Output Capacitance Design
S19-0911-Rev. E, 28-Oct-2019
9
Document Number: 76044 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
www.vishay.com Vishay Siliconix
Power Good
SiC46x’s power good is an open-drain output. Pull PGOOD pin high up to 5 V through a 10K resistor to use this signal. Power good window is shown in the Fig. 8. If voltage level VFB_Rising_Vth_OV (typ. = 0.96 V) VFB_Falling_Vth_OV on FB pin is out of this window, PG signal is de-asserted by (typ. = 0.91 V) pulling down to GND. To prevent false triggering during Vref (0.8 V) transient events, P VFB_Falling_Vth_UV GOOD has a 25 μs blanking time. V (typ. = 0.72 V) VFB_Rising_Vth_UV FB (typ. = 0.77 V) Pull-high PG Pull-low
Fig. 8 - PGOOD Window and Timing Diagram SiC46x microBUCK FAMILY SCHEMATIC
EN R_EN_H R_EN_L Heading 560K DNP t o 3 o 3. t NC PG b o F o μ R_ R_PGD _b 1 Notes in small C 0. 102K Css 33nF black text near 3 component EN 6 5 4 18 2 19 Rmode values refer to E2 E1 SS Mode 27 Vishay SiC46x S S NC 1 spreadsheet VCIN A A OOT OOD 2K B Cdd G 29 calcualtor VIN-PAD 26 PH PH P VDD references 7 VIN1 1μF +Vin 8 25 ILIMIT VIN2 6V to 60V Cin_D R_fsw 0.1μF 28 AGND-PAD
SiC466
FSW 24 30 PGND-PAD 52.3K
SiC467
9 23 AGND PGND1
SiC468
10 PGND2 R_FB_L
SiC469
VFB 22 11 PGND3 10K Cin 17 PGND 21 NC V 47μF R T L W1 W2 W3 OU G VD S S S V AGND 15 16 12 13 14 20 R_FB_H 52.3K Analog ground +VOUT = 5 V (A ), and power GND Cdrv ground (P ) L 0.1μF 64 μF 64 μF GND are tied internally 4.7μF Cout_D Cout_C Cout_B in the SiC46x PGND
Fig. 9 - SiC467 Configured for 6 V to 60 V Input, 5 V Output at 6 A, 500 kHz Operation with Power Save Mode Enabled all Ceramic Output Capacitance Design
S19-0911-Rev. E, 28-Oct-2019
9
Document Number: 76044 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
