ISO5500EVM

User's Guide SLLU136A – September 2011 – Revised November 2012 ISO5500EVM This document describes the ISO5500 Evaluation Module (EVM) and allows designers to analyze and evaluate the Texas Instruments ISO5500 Isolated Gate Driver. The ISO5500EVM can be used to evaluate device parameters while acting as a guide for board layout. The board allows the user to evaluate device performance using a simulated (10-nF) IGBT load installed on the board, or to install an IGBT or MOSFET (TO-247 package) onto the board and drive it with the ISO5500. 1 2 Contents Introduction .................................................................................................................. 1.1 Overview ............................................................................................................ 1.2 ISO5500EVM Kit Contents ....................................................................................... Printed-Circuit Board ....................................................................................................... 2.1 ISO5500 Operation ................................................................................................ 2.2 Schematic and Bill of Materials .................................................................................. 1 1 2 2 2 5 List of Figures 1 2 3 4 ........................................................................ High-Side Interconnection Diagram ...................................................................................... Low-Side Interconnection Diagram ....................................................................................... Component Changes to Change Turnon/Turnoff ....................................................................... ISO5500 Pinout and Functional Block Diagram 2 4 4 5 List of Tables 1 Test Points ................................................................................................................... 5 2 Bill of Materials .............................................................................................................. 6 1 Introduction 1.1 Overview This ISO5500EVM was designed to allow the user to evaluate the performance and features of the ISO5500. This includes the IGBT desaturation protection (DESAT) and the UVLO circuit that ensures a sufficient gate voltage is available to drive the IGBT or MOSFET. The printed-circuit board (PCB) also includes provisions to adjust the turnon/turnoff characteristics by changing the loading between the ISO5500 output and the IGBT (or MOSFET) gate. The EVM kit includes the ISO5500 data sheet. Figure 1 shows the device pinout and the functional block diagram. QuietZone is a trademark of 3M. SLLU136A – September 2011 – Revised November 2012 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated ISO5500EVM 1 Printed-Circuit Board www.ti.com DEVICE PINOUT 1 2 3 4 5 6 7 8 VIN+ VE VIN- VEE VCC1 16 15 14 DESAT VCC2 13 VC 12 VOUT 11 NC VEE 10 GND1 VEE 9 GND1 RESET FAULT Figure 1. ISO5500 Pinout and Functional Block Diagram 1.2 ISO5500EVM Kit Contents • • • 2 ISO5500EVM printed-circuit board with ISO5500DW installed (P/N 6512405) ISO5500EVM User’s Guide (This document) ISO5500 data sheet Printed-Circuit Board The ISO5500 is an isolated gate driver with several important features. The printed-circuit board (PCB) has been designed to support this device and to allow the user to evaluate its basic operation and features. The left side of the PCB contains the interface to the input, control, and status functions of the integrated circuit (IC). The right side of the PCB has been designed to interface to an IGBT (or MOSFET). No electrical connections exist between the right and left sides of the PCB. Refer to the ISO5500EVM schematic and bill of materials to become familiar with the PCB components and layout. The PCB files (Gerber/ODB) are available from Texas Instruments on request. 2.1 ISO5500 Operation 2.1.1 Left-Side Operation: DC Power, Control, and Status 2.1.1.1 DC Power The left side of the ISO5500 (and therefore the PCB) can be operated using either a +3.3-V (±10%) or +5V (±10%) dc power supply. The small amount of dc current required (