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SLUUCB4 June 2020 TPS25980

TPS25980EVM: Evaluation Module for TPS25980x efuse

4.1 Physical Access

Table 2 lists the TPS25980EVM eFuse Evaluation Board input and output connector functionality. Table 3 and Table 4 describe the test point availability and the jumper functionality. Table 5 describes the auto-retries and retry-delay settings.

Table 2. Input and Output Connector Functionality

Connector	Label	Description
J1	VIN	Power input connector to the positive rail of the input power supply
J3	PGND	Ground connection for the power supply
J2	VOUT	Power output connector to the positive side of the load
J5	PGND	Ground connection for the load

Table 3. Test Points Description

Test Points	Label	Description
TP1	VIN	Input power supply to the EVM
TP2	VOUT	Output from the EVM
TP3	EN/UVP	Active high enable and undervoltage input
TP4	VCC_EXT	External power supply input for Power Good pullup
TP5	PG	Power Good test point
TP6	LDSTRT	Load handshake signal input point
TP7	PGND	System ground
TP8	GND	GND(IC GND)
TP9	GND	GND(IC GND)
TP10	GND	GND(IC GND)
TP11	ITIMER	Fault timer voltage
TP12	ILIM	Sets current limit threshold
TP13	RETRY_DLY	Sets retry delay time
TP14	DVDT	Output voltage ramp control
TP15	IMON	Load current monitor

Table 4. Jumper and LED Descriptions

Jumper	Label	Description
J4	NRETRY	NRETRY setting number of auto-retries. Please refer Table 5 for details 1-2 Position shorts to ground 3-4 Position sets 68 nF
J6	IMON	Current scale setting 1-2 Position sets 0.13 V/A 3-4 Position sets 0.25 V/A
J7	PG Pull-Up	PG Pull-Up voltage setting 1-2 Position sets external source “VCC_EXT” 3-4 Position sets 3.3 V
J8	LDSTRT	LDSTRT setting Install J8 to disable the LDSTRT function OPEN J8 to feed LDSTRT signal externally
J9	ITIMER	ITIMER setting (sets delay before entering into current limit) OPEN sets ‘0’sec delay 1-2 Position sets 200 µs delay 3-4 Position sets 2 ms delay 5-6 Position sets 20 ms delay
J10	ILIM	Current Limit Setting OPEN disables the device 1-2 Position sets Rilim to short and disables the device 3-4 Position sets 3 A 5-6 Position sets 5 A 7-8 Position sets 8 A
J11	RETRY_DLY	Retry delay setting OPEN sets 200 µs 1-2 Position sets “NO auto-retry” (latches OFF the device) 3-4 Position sets 1 s retry delay 5-6 Position sets 50 ms retry delay
J12	DVDT	Output voltage slew rate setting 1-2 Position sets 1.5 V/ms 3-4 Position sets 0.5 V/ms
D3 (GREEN – LED)	D3	Power good indicator. LED turns on when the internal FET fully turns ON

Table 5. Auto-retries and Retry Delay Settings

RETRY_DLY (J11 Position)	Retry Delay	NRETRY (J4 Position)	Number of Auto-Retries
OPEN	200 µs	OPEN	4
		1-2	Infinite
		2-3	16
1-2 Position	Latches OFF	X	0
3-4 Position	1 s	OPEN	4
		1-2	Infinite
		2-3	16
5-6 Position	50 ms	OPEN	4
		1-2	Infinite
		2-3	64