SNOU192A December   2021  – December 2021 LM74502

 

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2.5 Test Points:

Table 2-1 lists the LM74502EVM board input and output connector functionality. Table 2-2 and Table 2-3 describe the test points description and the jumper functionality of the EVM respectively.

Table 2-1 Connectors: Input and Output

Channel

Connector

Description

1

J1

Power input connector to the positive rail of the input power supply

J5

Ground connection for the power supply

J2

Power output connector to the positive side of the load

J6

Ground connection for the load

2

J7

Power input connector to the positive rail of the input power supply

J11

Ground connection for the power supply

J8

Power output connector to the positive side of the load

J12

Ground connection for the load

Table 2-2 Test Points Description

Test Point

Name

Description

TP1

VIN1

Input power supply to the EVM – channel 1

TP2

VOUT1

Output from the EVM – channel 1

TP5

GATE1

Output of controller’s gate pin – channel 1

TP6

OV1

Adjustable input at the overvoltage pin – channel 1

TP7

VS1

Power supply to the controller – channel 1

TP8

EN/UVLO1

EN/UVLO input to the controller – channel 1

TP9

VIN2

Input power supply to the EVM – channel 2

TP10

VOUT2

Output from the EVM – channel 2

TP13

GATE2

Output of controller’s gate pin – channel 2

TP14

OV2

Adjustable input at the overvoltage pin – channel 2

TP15

VS2

Power supply to the controller – channel 2

TP16

EN/UVLO2

EN/UVLO input to the controller – channel 2

TP3, TP4, TP11, TP12

PGND

Test point for EVM ground

Table 2-3 Jumpers and LED Description

Jumpers

Description

J4

OV protection setting channel 1

  • 1-2 sets the device in OV cutoff mode

  • 2-3 sets the device in OV clamp mode

J3

Enables LED indication for output – channel 1

J10

OV protection setting channel 2

  • 1-2 sets the device in OV cutoff mode

  • 2-3 sets the device in OV clamp mode

J9

Enables LED indication for output – channel 2