Silicon Laboratories Si886 Series User Manual Download Page 7 | Manualshive

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Silicon Laboratories Si886 Series User Manual Download Page 7

Si886xxISO-EVB

Rev. 0.1

7

5. Si886xxISO-EVB Layout

Figure 3. Si886xxISO-EVB Layout

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Summary of Contents for Si886 Series

Page 1: ...886XXISO EVB USER S GUIDE Description This document describes the operation of the Si886xxISO EVB Kit Contents The Si886xxISO Evaluation Kit contains the following items Si886xxISO EVB Si88621ED IS installed on the evaluation board Si886xxISO EVB Overview Downloaded from Arrow com ...

Page 2: ...up to 5 W to an external load connected to terminal block J2 LED D22 above the terminal block J2 illuminates when the dc dc converter is operating VIN and VOUT test points are available along the upper edge of the EVB 1 2 Digital Isolator Supplies The A side power is provided by a regulator circuit referenced to VREGA pin of the Si888621ED IS VIN is stepped down from 24 V to approximately 4 3 V an...

Page 3: ...disabled the B side can be powered by an active high digital input on the B side Ensure B2 input is tri state or driven low when VDDB is left floating or grounded 2 2 3 3 V DC DC Converter Output To change VOUT to 3 3 V change R5 to 43 2 k and R6 to 20 0 k 2 3 Alternate Supply for VDDA To bypass the regulator circuit and supply VDDA from a separate supply remove Q2 and connect positive power suppl...

Page 4: ...lator Connector JP2 GNDA through 499 A2 Not Installed Digital Isolator Connector JP5 B1 GNDB through 499 Not Installed Digital Isolator Connector JP6 B2 GNDB through 499 Not Installed Digital Isolator Connector JP9 GNDA SHDN VDDA Installed SHDN GNDA DC DC Converter Enabled JP10 VIN GNDA Not Installed DO NOT SHORT test points only JP11 GNDB VOUT Not Installed DO NOT SHORT test points only JP13 VDDB...

Page 5: ...J2 TP1 VIN TP3 VOUT TP5 SH JP1 JP2 JP5 JP6 1 2 J1 1 2 VIN J2 1 2 VOUT VOUT VIN This is an OUTPUT Valid range 24V 10 U1 Si88621 VIN GNDA VOUT GNDB B1 A1 B2 SHDN A2 VDDA JP9 HEADER 1x3 1 2 3 D20 28V R21 69 8K JP10 JP11 JS9 Figure 1 Si886xxISO EVB Schematic 1 of 2 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Page 6: ...3 2k and R6 to 20 0k Default EVB Converter Configuration VIN 24V 10 VOUT 5V GNDA R6 13 3K R5 49 9K C14 0 1uF Q1 FDT3612 ISOLATION U1 Si88621 VDDA 4 VDDB 19 NC 17 RSNS 2 GNDP 1 SH_FC 7 SS 8 B1 12 B2 11 A1 9 A2 10 NC 14 NC 13 ESW 3 VREGA 6 COMP 15 GNDB 20 GNDA 5 VSNS 16 VREGB 18 C4 10uF JS13 JP13 C9 0 1uF C11 1 5nF Figure 2 Si886xxISO EVB Schematic 2 of 2 Downloaded from Arrow com Downloaded from Ar...

Page 7: ...SO EVB Layout Figure 3 Si886xxISO EVB Layout Top Bottom Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Page 8: ...te On LTST C190KRKT J1 J2 CONN TERM BLOCK 2POS 5MM PCB Phoenix Contact 1729018 JP1 JP2 JP5 JP6 JP10 JP11 JP13 Header 2x1 0 1 pitch Tin Plated Samtec TSW 102 07 T S JP9 Header 3x1 0 1 pitch Tin Plated Samtec TSW 103 07 T S JS9 JS13 Shunt 1x2 0 1 pitch Tin plating Samtec SNT 100 BK T MH1 MH2 MH3 MH4 HDW Screw 4 40 x 1 4 Pan Head Slotted Nylon Richco Plastic Co NSS 4 4 01 Q1 TRANSISTOR MOSFET N CHNL ...

Page 9: ...e 1902D T1 TRANSFORMER Flyback 25 μH Primary 500 nH Leakage 3 1 SMT UMEC UTB02205s TP1 TP2 TP3 TP4 TP5 TP19 TP20 TP33 TESTPOINT BLACK PTH Kobiconn 151 203 RC U1 IC ISOLATOR DC DC External Switch Freq Control 2 Digital Ch SO20 WB Silicon Labs Si88621ED IS Table 3 Si886xxISO EVB Bill of Materials Part Reference Description Manufacturer Manufacturer Part Number Downloaded from Arrow com Downloaded fr...

Page 10: ...ion Si886xxISO KIT Si886xx dc dc digital isolator evaluation board kit Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Page 11: ...itten consent of Silicon Labs A Life Support System is any product or system intended to support or sustain life and or health which if it fails can be reasonably expected to result in significant personal injury or death Silicon Labs products are not designed or authorized for military applications Silicon Labs products shall under no circumstances be used in weapons of mass destruction including...

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