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UG168: Si8284-EVB User's Guide
This document describes the operation of the Si8284-EVB.
The Si8284 Evaluation Kit contains the following items:
• Si8284-EVB
• Si8284CD-IS installed on the evaluation board.
silabs.com | Smart. Connected. Energy-friendly.
KEY POINTS
• Discusses hardware overview and setup,
including:
• Si8284 low voltage side connections.
• DC-DC operation.
• Si8284 isolated gate drive connections.
• Offers alternative configurations.
• Demonstrates driver functionality.
• Shows Si8284-EVB schematics and
silkscreen/copper layout.
• Includes the bill of materials and ordering
guide.
Rev. 0.1
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Summary of Contents for Silicon Laboratories Si8284-EVB
- Page 1 UG168: Si8284-EVB User's Guide This document describes the operation of the Si8284-EVB. KEY POINTS The Si8284 Evaluation Kit contains the following items: • Discusses hardware overview and setup, • Si8284-EVB including: • Si8284 low voltage side connections. • Si8284CD-IS installed on the evaluation board.
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Page 2: Overview And Setup
1. Overview and Setup 1.1 Hardware Si8284-EVB can be used to demonstrate the isolated gate drive capabilities of the installed Si8284CD-IS. The Si8284 includes a DC- DC converter used to supply isolated power to the gate driver. Si8284 Low Voltage Side Connections Supply power to the input side of Si8284 by applying 12 to 24 VDC to VDDP at terminal block J1. - Page 3 UG168: Si8284-EVB User's Guide Overview and Setup 1.2 Alternative Configurations Positive Voltage Gate Drive Only The standard configuration for the gate driver 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, remove R13 and install a 0 Ω...
- Page 4 VDDA VDDB VMID INPUT VDDA VMID VMID VDDA VMID GNDA VDDB INPUT VMID VSSB GNDA GNDA GNDA VSSB VMID VSSB VSSB GNDA OUTPUT BUMPER BUMPER Figure 2.1. Si8284-EVB Top Level Schematic silabs.com | Smart. Connected. Energy-friendly. Rev. 0.1 | 3...
- Page 5 UG168: Si8284-EVB User's Guide Schematics VPWR 1. DC/DC is built to drive gate to +15/ -9V 2. To operate with positive gate drive only: VPWR a. Remove R13 b. Install R19 = 0 Ohm VDDA VDDB c. Change divider VDDB-VSSB = (R1/R2 + 1) x 1.05V...
- Page 6 UG168: Si8284-EVB User's Guide Layout 3. Layout Figure 3.1. Si8284-EVB Top Silkscreen Figure 3.2. Si8284-EVB Top Copper silabs.com | Smart. Connected. Energy-friendly. Rev. 0.1 | 5...
- Page 7 UG168: Si8284-EVB User's Guide Layout Figure 3.3. Si8284-EVB Bottom Silkscreen Figure 3.4. Si8284-EVB Bottom Copper silabs.com | Smart. Connected. Energy-friendly. Rev. 0.1 | 6...
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Page 8: Bill Of Materials
UG168: Si8284-EVB User's Guide Bill of Materials 4. Bill of Materials Table 4.1. Si8284-EVB Bill of Materials Part Reference Description Manufacturer Manufacturer Part Number C2, C20 CAP, 100 pF, 50 V, ±20%, C0G, 0603 Venkel C0603C0G500-101M C3, C5, C7, C12, CAP, 10 μF, 50 V, ±20%, X7R, 1210... - Page 9 UG168: Si8284-EVB User's Guide Bill of Materials Part Reference Description Manufacturer Manufacturer Part Number RES, 0.1 Ω, 1/2 W, ±1%, ThickFilm, 1206 Venkel LCR1206-R100F RES, 10.0 Ω, 1/16 W, ±1%, ThickFilm, 0603 Venkel CR0603-16W-10R0F RES, 18.7K, 1/16 W, ±1%, ThickFilm, 0603...
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Page 10: Ordering Guide
UG168: Si8284-EVB User's Guide Ordering Guide 5. Ordering Guide Table 5.1. Si8284-EVB Ordering Guide Ordering Part Number (OPN) Description Si8284-KIT Si8284 Isolated gate driver evaluation board kit. silabs.com | Smart. Connected. Energy-friendly. Rev. 0.1 | 9... - Page 11 Trademark Information Silicon Laboratories Inc.® , Silicon Laboratories®, Silicon Labs®, SiLabs® and the Silicon Labs logo®, Bluegiga®, Bluegiga Logo®, Clockbuilder®, CMEMS®, DSPLL®, EFM®, EFM32®, EFR, Ember®, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZRadio®, EZRadioPRO®, Gecko®, ISOmodem®, Precision32®, ProSLIC®, Simplicity Studio®, SiPHY®, Telegesis, the Telegesis Logo®, USBXpress®...
- Page 12 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Silicon Laboratories Si8284-KIT SI8284-KIT...
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