SI8285_86-KIT

UG169: Si8285/86-EVB User's Guide This document describes the operation of the Si8285_86-EVB. KEY POINTS The Si8285_86 Evaluation Kit contains the following items: • Si8285_86-EVB • Si8285CD-IS and Si8286CD-IS installed on the evaluation board. • Discusses hardware overview and setup, including: • Si8285/86 low voltage side connections. • Si8285/86 isolated gate drive connections. • Offers alternative configurations. • Demonstrates driver functionality. • Shows Si8285/86-EVB schematics and silkscreen/copper layout. • Includes a bill of materials and ordering guide. 1 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 1 UG169: Si8285/86-EVB User's Guide • Overview and Setup 1. Overview and Setup 1.1 Hardware Si8285/86-EVB can be used to demonstrate the isolated gate drive capabilities of the installed Si8285CD-IS and Si8286CD-IS, as well as their features specific to driving MOSFETs and IGBTs. The EVB is split into two halves that operate independently—one for Si8285 and the other for Si8286. Si8285 Low Voltage Side Connections Supply power to the input side of Si8285 by applying 3 to 5.5 VDC to VDDA at terminal block J1. LED D1 above terminal block J1 illuminates to show power applied. J7–J11 single pin headers provide access to the IN+, IN–, RSTb inputs, and FLTb and RDY outputs of the Si8285. These signals can be brought out to an external microcontroller using a ribbon cable (not supplied). FLTb output signal has a pull-up resistor to VDDA and is open drain output. This allows multiple gate drivers' FLTb outputs to share the same microcontroller input. Driver functionality can be exercised without a microcontroller by applying a GNDA referenced PWM signal from a function generator to the IN+ and IN– inputs. Maximum input voltage is VDDA. Si8285 Isolated Gate Drive Connections Supply power to the output side of the Si8285 by applying VDDB, VMID, and VSSB at terminal block J3. In typical MOSFET driver applications, VMID = VSSB. When driving IGBTs, typical values for VDDB and VSSB IGBTs are +15 V and –9 V, with respect to VMID. LED D2 above terminal block J3 illuminates to show power applied. There are four different load options for the Si8285 gate driver: 1. Through holes for a MOSFET or an IGBT in a TO-247 package (not supplied) at Q1. 2. Through holes for a MOSFET or an IGBT in a TO-220 package (not supplied) at Q2. 3. Through holes for a capacitor (not supplied) at C8. 4. Pads for a 1206-size surface mount capacitor (not supplied) at C9. From top to bottom, the through holes for the transistor leads are Source, Drain, and Gate. Load transistors are biased by applying voltage across VPWR and VMID terminals of J2. This voltage should not exceed the rated VDS of the transistor or the 300 V blocking voltage rating of installed D3. Supply voltage constraints are summarized in Table 1.1 Supply Voltage Constraints on page 3. Note: Si8285 can drive the gate of either high-side or low-side MOSFET or IGBT in a bridge configuration. When used as a high-side gate driver, VMID is connected to the load. When used as a low-side gate driver, VMID is the return for the load. For capacitive loads, capacitor value should be chosen to match the gate capacitance of the desired transistor. Si8286 Low Voltage Side Connections Supply power to the input side of Si8286 by applying 3 to 5.5 VDC to VDDA at terminal block J4. LED D4 above terminal block J4 illuminates to show power applied. J14-J17 single pin headers provide access to the IN+, IN–, RSTb input, and the FLTb output of the Si8286. These signals can be brought out to an external microcontroller using a ribbon cable (not supplied). FLTb output signal has a pull-up resistor to VDDA and is an open drain output. This allows multiple gate drivers' FLTb outputs to share the same microcontroller input. 2 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 2 UG169: Si8285/86-EVB User's Guide • Overview and Setup Si8286 Isolated Gate Drive Connections Supply power to the output side of the Si8286 by applying VDDB, VMID, and VSSB at terminal block J6. In typical MOSFET driver applications, VMID = VSSB. When driving IGBTs, typical values for VDDB and VSSB IGBTs are +15 V and –9 V, with respect to VMID. LED D5 above terminal block J6 illuminates to show power applied. There are four different load options for Si8286 gate driver: 1. Through holes for a MOSFET or an IGBT in a TO-247 package (not supplied) at Q3. 2. Through holes for a MOSFET or an IGBT in a TO-220 package (not supplied) at Q4. 3. Through holes for a capacitor (not supplied) at C17. 4. Pads for a 1206-size surface mount capacitor (not supplied) at C18. From top to bottom, the through holes for the transistor leads are Source, Drain, and Gate. Load transistors are biased by applying voltage across VPWR and VMID terminals of J5. This voltage should not exceed the rated VDS of the transistor or the 300 V blocking voltage rating of installed D6. Note: Si8286 can drive the gate of either high-side or low-side MOSFET or IGBT in a bridge configuration. When used as a high-side gate driver, VMID is connected to the load. When used as a low-side gate driver, VMID is the return for the load. For capacitive loads, capacitor value should be chosen to match the gate capacitance of the desired transistor. Supply voltage constraints are summarized in the table below. Table 1.1. Supply Voltage Constraints 3.0 V ≤ VDDA – GNDA ≤ 5.5 V VSSB ≤ VMID < VDDB UVLO+ < VDDB – VSSB < 30 V VPWR < VDS (Q) VPWR < 300 V |GNDA-VSSB| < 5 kV Note: 1. UVLO+ for the Si8285CD-IS and Si8286CD-IS is 12.3 V typically. 1.2 Alternative Configurations Positive Voltage Gate Drive Only The standard configuration for the gate driver is to apply positive voltage, VDDB–VMID, to the gate during the high drive portion of the PWM cycle and negative voltage, VSSB–VMID, during the low drive portion of the PWM cycle. Alternatively, if only positive drive voltage is desired, short VSSB and VMID at terminals 2 and 3 of J3/J6. Prototyping Area If additional components are needed to evaluate the gate drive function for a particular load, there is a prototyping area just below Q1 and Q3 locations. 3 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 3 UG169: Si8285/86-EVB User's Guide • Overview and Setup 1.3 Demonstrating Driver Functionality Even with no load connected, the basic functionality of the Si8285 can be demonstrated: 1. Apply 5 V to VDDA. D1 will illuminate. 2. Apply 15 V between VDDB and VMID. Apply –9 V between VMID and VSSB (VMID 9 V higher than VSSB). D2 will illuminate. 3. Short VPWR to VMID using a wire between the terminals of J2. This disables desaturation detection and allows for normal operation of the Si8285. 4. Since both sides have been powered on, RDY will output 5 V, which can be observed at J9. 5. Apply 5 V to both J10, IN+ and J11, IN–. The Si8285 will drive low and –9 V can be observed across C8. 6. Apply 5 V to J10, IN+ and 0 V to J11, IN–. The Si8285 will drive high and +15 V can be observed across C8. 7. Remove the short between VPWR and VMID at J2. 8. With no path for the DSAT current, the voltage at the DSAT pin rises and the Si8285 will drive the output low and will drive FLTb to 0 V, which can be observed at J8. 9. Once again, place the short back between VPWR and VMID at J2. Drive RSTb input to 0 V. This clears the fault and 5 V will be observed on J8, FLTb. Using the same method, Si8286 basic functionality can also be demonstrated: 1. Apply 5 V to VDDA. D4 will illuminate. 2. Apply 15 V between VDDB and VMID. Apply –9 V between VMID and VSSB. D5 will illuminate. 3. Short VPWR to VMID using a wire between the terminals of J5. This disables desaturation detection and allows for normal operation of the Si8286. 4. Apply 5 V to both J14, IN+ and J15, IN–. The Si8286 will drive low and –9 V can be observed across C17. 5. Apply 5 V to J14, IN+ and 0 V to J15, IN–. The Si8286 will drive high and +15 V can be observed across C17. 6. Remove the short between VPWR and VMID at J5. 7. With no path for the DSAT current, the voltage at the DSAT pin rises and the Si8286 will drive the output low and will drive FLTb to 0 V, which can be observed at J17. 8. Once again, place the short between VPWR and VMID at J5. Drive RSTb input to 0 V. This clears the fault and 5 V will be observed on J17, FLTb. 1.4 Quick Reference Table Table 1.2. Test Point Descriptions 4 Test Point Description Referenced to TP1 DSAT (Si8285) VMID TP2 DSAT (Si8286) VMID Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 4 UG169: Si8285/86-EVB User's Guide • Schematics 2. Schematics SF1 SF2 8285_VPWR J2 1 2 8285_VDDA J1 1 2 Si8285 8285_VMID 8285_VPWR 8285_VDDA VDDA VPWR VDDB 8285_VDDB VMID 8285_VMID 8285_VDDB 8285_GNDA GNDA J3 1 2 3 VSSB 8285_VSSB 8285_GNDA 8285_VMID 8285_VSSB 8286_VPWR 8286_VDDA J4 1 2 J5 Si8286 VDDA 8286_GNDA GNDA 1 2 8286_VPWR 8286_VDDA VPWR VDDB 8286_VDDB VMID 8286_VMID 8286_VMID 8286_VDDB VSSB 8286_VSSB 8286_GNDA J6 1 2 3 8286_VMID 8286_VSSB SF3 SF4 Figure 2.1. Si8285/86-EVB Top Level Schematic 5 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 5 UG169: Si8285/86-EVB User's Guide • Schematics VPWR VPWR VDDA VDDB VDDA VDDB VDDB VDDA R2 10K R1 10K GNDA VMID D2 RED D1 RED VSSB VSSB TP1 DSAT VDDA U1 R6 10K R7 10K C1 10uF C2 0.1uF 2 3 RST FLT RDY IN+ IN - J7 1 J8 1 J9 1 J10 1 J11 1 4 5 6 7 8 R3 GNDA NC VDDA DSAT NC RST FLT RDY ISOLATION 1 VDDB VH VL CLMP IN+ VMID IN - VSSB 16 100 D3 C3 390pF 15 ES1F DSAT VDDB 14 13 R4 10 VH 12 R5 10 VL 11 CLMP 10 VMID 9 C4 0.1uF C5 10uF C6 0.1uF C7 10uF Si8285CD- IS VSSB VPWR 2 4 6 8 10121416 DSAT J12 1 3 5 7 9 111315 NI VH VL CLMP 2 4 6 8 10121416 Q1 TO- 247 NI VMID J13 1 3 5 7 9 111315 NI VPWR DSAT VH VH VL VL CLMP VMID C8 NI C9 NI CLMP Q2 TO- 220 NI VMID Figure 2.2. Si8285 Circuit Schematic 6 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 6 UG169: Si8285/86-EVB User's Guide • Schematics VPWR VPWR VDDA VDDB VDDA VDDB VDDB VDDA R9 10K R8 10K GNDA VMID D5 RED D4 RED VSSB VSSB IN - J14 1 TP2 DSAT U2 J15 1 1 2 VDDA 3 4 R12 10K R13 10K C11 10uF C12 0.1uF 5 6 RST FLT J16 1 J17 1 7 8 R10 IN+ VMID IN VDDA GNDA RST FLT NC NC NC ISOLATION IN+ DSAT VDDB VDDB VO VSSB VSSB 16 100 D6 ES1F DSAT C10 100pF 15 VMID 14 VDDB 13 12 11 R11 10 VO 10 9 C13 0.1uF C14 10uF C16 0.1uF C15 10uF VSSB Si8286CD - IS VPWR 2 4 6 8 10121416 DSAT J18 1 3 5 7 9 111315 Q3 TO-247 NI VO 2 4 6 8 10121416 VMID J19 1 3 5 7 9 111315 VPWR DSAT VO C17 NI VMID C18 NI VO Q4 TO-220 NI VMID Figure 2.3. Si8286 Circuit Schematic 7 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 7 UG169: Si8285/86-EVB User's Guide • Layout 3. Layout Figure 3.1. Si8285/86-EVB Top Silkscreen Figure 3.2. Si8285/86-EVB Top Copper 8 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 8 UG169: Si8285/86-EVB User's Guide • Layout Figure 3.3. Si8285/86-EVB Bottom Silkscreen Figure 3.4. Si8285/86-EVB Bottom Copper 9 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 9 UG169: Si8285/86-EVB User's Guide • Bill of Materials 4. Bill of Materials Table 4.1. Si8285/86-EVB Bill of Materials Part Reference Description Manufacturer Manufacturer Part Number C1, C11 CAP, 10 μF, 16 V, ±10%, X5R, 0805 Venkel C0805X5R160-106K C2, C6, C12 CAP, 0.1 μF, 16 V, ±10%, X7R, 0402 Venkel C0402X7R160-104K CAP, 390 pF, 100 V, ±20%, X7R, 0805 Venkel C0805X7R101-391M C4, C13, C16 CAP, 0.1 μF, 50 V, ±10%, X7R, 0603 Venkel C0603X7R500-104K C5, C7, C14, C15 CAP, 10 μF, 25 V, ±20%, X6S, 0805 Venkel C0805X6S250-106M C10 CAP, 100 pF, 200 V, ±5%, NP0 HIGH Q, 0805 Venkel C0805HQN201-101J D1, D2, D4, D5 LED, RED, 631 nM, 20 mA, 2 V, 54mcd, 0603 LITE-ON TECHNOLOGY CORP LTST-C190KRKT Fairchild ES1F C3 D3, D6 DIO, FAST, 300 V, 1.0A, SMA J1, J2, J4, J5 Terminal Block, 2 pos, 6.35 mm, 10-30AWG, 300 V, 32 A Phoenix Contact 1714955 J3, J6 Terminal Block, 3 pos, 6.35 mm, 10-30AWG, 300V, 32 A Phoenix Contact 1714968 J7, J8, J9, J10, J11, J14, J15, J16, J17 Header, Single Pin, Tin Plated Samtec TSW-101-07-T-S R1, R2, R6, R7, R8, R9, R12 RES, 10 K, 1/16 W, ±1%, ThickFilm, 0603 Venkel CR0603-16W-1002F RES, 100 Ω, 1/10 W, ±1%, ThickFilm, 0805 Venkel CR0805-10W-1000F RES, 10 Ω, 1/4 W, ±1%, ThickFilm, 1206 Venkel CR1206-4W-10R0F 3M SJ61A6 TESTPOINT, WHITE, PTH Kobiconn 151-201-RC U1 IC, 4 AMP ISODRIVER, 12 V UVLO, 5KV, SOW16 Skyworks Si8285CD-IS U2 IC, 4 AMP ISODRIVER, 12 V UVLO, 5KV, SOW16 Skyworks Si8286CD-IS R13 R3, R10 R4, R5, R11 SF1, SF2, SF3, SF4 TP1, TP2 10 HDW, BUMPON CYLINDRICAL, 0.312 x 0.215, BLK Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 10 UG169: Si8285/86-EVB User's Guide • Ordering Guide 5. Ordering Guide Table 5.1. Si8285/86-EVB Ordering Guide Ordering Part Number (OPN) Si8285_86-KIT 11 Description Si8285/Si8286 Isolated gate driver evaluation board kit. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 20, 2021 11 Connecting Everyone and Everything, All the Time Portfolio Quality Support & Resources www.skyworksinc.com www.skyworksinc.com/quality www.skyworksinc.com/support Copyright © 2021 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. 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