background image

TB2

PSU

V

CC2

V

E

E

2

G

N

D

2

V

C

C

2

TB2

PSU

V

CC2

V

EE

2

G

N

D

2

V

C

C

2

V

EE2

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EVM Setup and Precautions

2

EVM Setup and Precautions

2.1

Power Supply Connections

Figure 1

illustrates the EVM power supply schematic.

Figure 1. ISO5851 EVM Power Supply Schematic

The primary side of the EVM (V

CC1

) operates from a single 3-V to 5.5-V power supply and connected via

TB3. Test point (TP8) is available for monitoring the primary power supply.

The EVM provides connections for evaluating the output side (V

CC2

, V

EE2

) with either a bipolar or unipolar

power supply, from a minimum 15-V to maximum 30-V. For unipolar operation, connect V

EE2

to GND2

through a wire-bridge between pin 2 and pin 3 of TB2, as shown in

Figure 2

. V

CC2

and V

EE2

can be

monitored via TP17 and TP19, respectively.

Figure 2. Output Power Supply for Unipolar (Left) or Bipolar (Right) Operation

3

SLLU218 – June 2015

ISO5851 Evaluation Module

Submit Documentation Feedback

Copyright © 2015, Texas Instruments Incorporated

Summary of Contents for ISO5851

Page 1: ...ections 3 2 2 Signal Connections 4 3 Example Measurements 5 4 Printed Circuit Board 8 4 1 ISO5851 Operation 8 4 2 ISO5851 EVM Bill of Materials 11 List of Figures 1 ISO5851 EVM Power Supply Schematic...

Page 2: ...solation barrier pulling the FLT output at the primary side low and blocking the isolator input The FLT output condition is latched and can be reset through a low active pulse at the RST input When th...

Page 3: ...vailable for monitoring the primary power supply The EVM provides connections for evaluating the output side VCC2 VEE2 with either a bipolar or unipolar power supply from a minimum 15 V to maximum 30...

Page 4: ...stors R3 R12 control the rise and fall times of the output These resistors can be modified by the user to alter the turn on and turn off characteristics of the output The EVM also allows for evaluatio...

Page 5: ...LAMP feature can be disabled by removing R6 CLAMP can be monitored via TP14 and a signal can be applied directly to the CLAMP pin via JMP4 3 Example Measurements Figure 4 illustrates measurements perf...

Page 6: ...of the DESAT FLT and RST pins IN is set to 5 VDC and an 10 s pulse is applied to RST On the rising edge of RST the fault is cleared and the DESAT capacitor begins to charge As the DESAT pin reaches t...

Page 7: ...m Example Measurements Figure 7 ISO5851 EVM DESAT and Reset with Bipolar Output Supply 7 SLLU218 June 2015 ISO5851 Evaluation Module Submit Documentation Feedback Copyright 2015 Texas Instruments Inco...

Page 8: ...M schematic shown in Figure 3 and the bill of materials given in Table 2 to become familiar with the PCB components and layout The following table pertains to the labels on the EVM board Figure 8 Give...

Page 9: ...male header and installing a shorting jumper between pin 1 and pin 2 on JMP3 disables the DESAT function 4 1 2 3 Load As shipped the ISO5851EVM does not have an IGBT installed The user can evaluate d...

Page 10: ...GND1 Side 1 TP8 Supply VCC1 Side 1 TP9 Ground GND1 Side 1 TP10 Input COLLECTOR VOLTAGE Side 2 TP11 Input EMITTER VOLTAGE Side 2 TP12 Output GATE VOLTAGE Side 2 TP13 Input DESAT Side 2 TP14 Input CLAMP...

Page 11: ...der 3x1 Samtec Inc HTSW 103 07 G S 19 1 P1 GND2 Emerson Network Power 108 0740 001 20 1 P2 COLLECTOR 50 V DC MAX Emerson Network Power 108 0740 001 21 2 Q1 Q2 IGBT DNI DNI 22 2 R1 R2 10 k Vishay Dale...

Page 12: ...ing the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repa...

Page 13: ...transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indic...

Page 14: ...ified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors current sens...

Page 15: ...REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE L...

Page 16: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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