SNOU192 User guide

SNOU192A December 2021 – December 2021 LM74502

1
2
1. 3
2. 4
5
1. 6
2. 7
3. 8
4. 9
5. 10
11
12
1. 13
2. 14
3. 15
4. 16
17
1. 18
2. 19
3. 20
4. 21
5. 22
6. 23
24
1. 25
2. 26
27

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