SBOU079D july   2009  – july 2023 INA220 , INA220-Q1

 

  1.   1
  2.   INA220 Evaluation Module
  3.   Trademarks
  4. 1Overview
    1. 1.1 INA220EVM Hardware
    2. 1.2 Related Documentation from Texas Instruments
    3. 1.3 Information About Cautions and Warnings
  5. 2System Setup
    1. 2.1 Theory of Operation for INA220_Test_Board Hardware
    2. 2.2 Signal Definitions of J1 (25-Pin Male DSUB)
    3. 2.3 Theory of Operation For USB_DIG_Platform
  6. 3INA220EVM (Rev A) Hardware Setup
    1. 3.1 Electrostatic Discharge Warning
    2. 3.2 Typical Hardware Connections
    3. 3.3 Connecting the Hardware
    4. 3.4 Connecting Power
    5. 3.5 Connecting the USB Cable to the INA220EVM
    6. 3.6 INA220 Jumper Settings
    7. 3.7 Connecting External Power to the INA220EVM
    8. 3.8 Connecting External Signals to the INA220EVM
  7. 4INA220 Software Overview
    1. 4.1 INA220EVM Software Install
    2. 4.2 Starting the INA220EVM Software
    3. 4.3 Using the INA220 Software
      1. 4.3.1 Overview Tab
      2. 4.3.2 Config Tab
      3. 4.3.3 Calibration Tab
      4. 4.3.4 Scaling Tab
      5. 4.3.5 Graph Tab
      6. 4.3.6 Registers Tab
      7. 4.3.7 EVM Controls Pull-Down Menu
      8. 4.3.8 Software Revision
  8. 5Bill of Materials
  9. 6Revision History

3.6 INA220 Jumper Settings

Figure 3-4 shows the default jumpers configuration for the INA220EVM. In general, the jumper settings of the USB DIG Platform will not need to be changed, but you may want to change some of the jumpers on the INA220_Test_Board to match your specific configuration. For instance, you may wish to set a specific I2C address.

GUID-C860C614-4B5C-42C3-9987-33F57D3A788F-low.pngFigure 3-4 INA220EVM Default Jumper Settings

Table 3-1 explains the function of the jumpers on the INA220_Test_Board.

Table 3-1 INA220_Test_Board Jumper Functions

JUMPER

DEFAULT

PURPOSE

JMP1VDUTThis jumper determines the source for the INA220 power supply. In the Vdut position, the USB DIG board supplies the power to the INA220. In the Vs_Ext position, an external supply connected to the INA220 T3 terminal supplies power.
JMP2, JMP3JMP2 (GND)A0 address input selection. This jumper determines which signal is connected to the A0 pin of the INA220.
JMP4, JMP5JMP4 (GND)A1 address input selection. This jumper determines which signal is connected to the A1 pin of the INA220.

Table 3-2 summarizes the function of the USB DIG platform jumpers. For most applications, the default jumper position will be used. Table 3-3 and Table 3-4 describe the options for the power-supply configuration. For example, the logic power supply can be changed from the default of 5 V to 3 V. A separate document (SBOU058) details the operation and design of the USB DIG platform.

Table 3-2 USB DIG Platform Jumper Settings
JUMPERDEFAULTPURPOSE
JUMP1EXTThis jumper selects external power or bus power. External power is applied on J5 (on USB DIG board) or T3 (9 VDC). Bus power is 5 V from the USB. External power is typically used because the USB power is noisy.
JUMP2EXTSame as JUMP1.
JUMP3EE ONThis jumper determines where the TUSB3210 will load the USB DIG Platform firmware upon power-up or reset. The EE Off position is used for development for development or firmware updates.
JUMP4, JUMP5L, LThis jumper sets the address for the USB board. Only change from the default setting if using multiple boards.
JUMP95 VThis jumper selects the voltage of the device under test supply (VDUT = 5 V or 3 V). This jumper is typically the only jumper that is changed for most applications.
JUMP10WP ONThis jumper write-protects the firmware EEPROM.
JUMP11WP ONThis jumper write-protects the calibration EEPROM.
JUMP13RegThis jumper uses the regulator output to generate the VDUT supply. The USB can be used as the VDUT supply.
JUMP149 VThis jumper uses the external power (9 V as apposed to the bus)
JUMP17BUSWhile in the BUS position, VDUT operation is normal. While in the VRAW position, the VDUT supply is connected to an external source. This flexibility allows for any value of VDUT between 3 V and 5 V.
CAUTION:

When JUMP17 is in the VRAW position, adjusting the VDUT voltage beyond the 3 V to 5 V range will damage the EVM.

JUMP18VDUTThis jumper connects the pullup on the GPIO to the VDUT supply or the VCC supply.
Table 3-3 Power-Supply Jumper Configuration #1

MODE

JUMPER

COMMENT

External Power—5V
(default jumper settings)		JUMP17 = BUS (not used)
JUMP13 = REG
JUMP14 = 9 V
JUMP1 = EXT
JUMP2 = EXT
JUMP6 = 5 V
JUMP7 = REF		In this mode, all power is supplied to the EVM by J5 (on USB DIG board) or T3. The external supply must be between 5.8 V and 10.4 V for proper operation. All digital I/Os are regulated to 5 V using U19 (REG101).
External Power—3V
(typical jumper settings)		JUMP17 = BUS (not used)
JUMP13 = REG
JUMP14 = 9 V
JUMP1 = EXT
JUMP2 = EXT
JUMP6 = 3 V
JUMP7 = REF		In this mode, all power is supplied to the EVM by J5 (on USB DIG board) or T3. The external supply must be between 5.8 V and 10.4 V for proper operation. All digital I/Os are regulated to 3 V using U19 (REG101).
External Power—Variable SupplyJUMP17 = Vraw
JUMP13 = BUS
JUMP14 = 9 V (not used)
JUMP1 = EXT
JUMP2 = EXT
JUMP6 = 5 V (not used)
JUMP7 = REG (ratiometric mode)		In this mode, all the digital I/Os are referenced to the supply that is attached to either J5 (on USB DIG board) or T3.
CAUTION:

It is absolutely critical that the supply voltage does not exceed 5.5 V in this mode.

The supply is directly applied to devices with 5.5 V absolute maximum ratings. This mode of operation is useful when a device supply other than 3.0 V or 5.0 V is required.
Table 3-4 Power-Supply Jumper Configuration #2

MODE

JUMPER

COMMENT

Bus Power—5VJUMP17 = BUS
JUMP13 = BUS
JUMP14 = 9 V (not used)
JUMP1 = BUS
JUMP2 = BUS
JUMP6 = 5 V (not used)
JUMP7 = REG (ratiometric mode, 5-V supply)		In this mode, the USB bus completely powers the EVM. The USB bus is regulated by the controller (computer) to be 5 V. This mode relies upon external regulation. This mode is recommended only when an external 9-V supply is not available. If an external 9-V supply is available, use either External Power—5V mode or External Power—3V mode.
Bus Power—3VJUMP17 = BUS (not used)
JUMP13 = REG
JUMP14 = BUS
JUMP1 = BUS
JUMP2 = BUS
JUMP6 = 3 V
JUMP7 = REG (ratiometric mode, 5-V supply)		In this mode, the USB bus completely powers the EVM. The regulator (U19, REG101) generates a 3-V supply for all digital I/O.