SLVUD10A August 2024 – September 2024 TPS25772-Q1
This section goes over the jumper settings of the EVM. To reference the default jumper configurations, see Table 2-1.
Jumper | Connection | Description |
---|---|---|
J1 | Jumper not installed | NTC not connected to onboard PTC or I2C digital potentiometer |
J6 | Jumpers installed between pins 9-10 and 11-12 | PCB EEPROM connected to the TPS25772-Q1 via I2C1 |
J7 | Jumper not installed | TPS25772-Q1 configured to boot from EEPROM |
J9 | Jumpers installed between pins 1-2 and 7-8 | I2C1 connected to the Aardvark connector (J10) |
J15 | Jumper installed between pins 2-3 | SYNC pin of TPS25772-Q1 connected to the TPS55288-Q1 |
J18 | Installed | IRQ1 Connected to MCU used by GUI |
J19 | Not installed | GPIO9/IRQ1 not connected to TPS55288-Q1 |
J20 | Jumper installed between pins 2-3 | TPS55288-Q1 enabled when the TPS25772-Q1 is powered |
The J7 jumper selects the Boot Mode and I2C address for the TPS25772-Q1. The TVSP Selection headers and jumper settings are shown in Figure 2-2 and described in Table 2-2 below.
See the SYNC(i) Frequency Ranges table in the TPS25772-Q1 Automotive Dual USB Type-C® Power Delivery Controller with BuckBoost Regulator data sheet for TVSP Selection Description.
Pins | Name | Logic Level | Boot Mode |
---|---|---|---|
Open | SEL0 | 3.3V | EEPROM Boot and 22h/26h I2C address |
1-2 | SEL1 | 3.3V | External HUB/MCU Boot and 23h/27h I2C address |
3-4 | SEL2 | 1.8V | EEPROM Boot and 22h/26h I2C address |
5-6 | SEL3 | 1.8V | External HUB/MCU Boot and 23h/27h I2C address |
7-8 | SEL4 | 3.3V | EEPROM Boot and 23h/27h I2C address |
9-10 | SEL5 | 3.3V | External HUB/MCU Boot and 22h/26h I2C address |
11-12 | SEL6 | 1.8V | EEPROM Boot and 23h/27h I2C address |
13-14 | SEL7 | 1.8V | External HUB/MCU Boot and 22h/26h I2C address |
15-16(1) | SEL8 | 3.3V | Firmware update mode |
The J14 jumpers can be used to choose the VCONN source and enable external 5V, 3.3V and 1.1V auxiliary power. The 3.3V and 1.1V voltages supply power to the USB HUB and MCU. To make sure the EVM has full function, TI recommends to connect all pins. The power supply control headers and jumper settings are shown in Figure 2-3 and described in Table 2-3.
Pins | Label | Description |
---|---|---|
1-2 | 5V EN | Enable buck regulator (U7) to generate VCC5V |
3-4 | 5V-LDO | Connect LDO_5V (pin 21 of TPS25771-Q1) to VCC5V |
5-6 | 3V3 1V1 EN | Enable the LDOs (U8 & U9) to generate VCC3V3 and VCC1V1 for Hub (U13) and MCU (U17) |
The J6 jumpers expand the I2C1 connections of TPS25772-Q1 and can connect to the GPIO expander, I2C temperature sensor and EEPROM. Since the I2C1 bus can support multiple targets, TI recommends to connect all pins. The I2C Connection headers and jumper settings are shown in Figure 2-4 and described in Table 2-4.
Pins | Label | Description |
---|---|---|
1-2 and 3-4 | TCA640 GPIO | Connect the I2C1 bus of theTPS25772-Q1 to the TCA640 GPIO expander (J4) |
4-5 and 7-8 | LM75 Temp Sense | Connect the TPS25772-Q1's I2C1 bus to the LM75 temperature sensor (U4) |
9-10 and 10-11 | EEPROM | Connect the I2C1 bus of the TPS25772-Q1 to the EEPROM (U3) |
The J15, J18, J19, and J20 jumpers can be used to select the TPS55288-Q1's configuration settings and the GPIO9 signal path of theTPS25772-Q1. The Power Supply Control headers and jumper settings are shown in Figure 2-5 and described in Table 2-5, Table 2-6, Table 2-7, and Table 2-8.
Pins | Description/Label |
---|---|
1-2 | Connect C75 capacitor to the DITH/SYNC pin of the TPS55288-Q1 to set a dithering frequency |
2-3 | Connect the SYNC pin of the TPS25772-Q1 to the DITH/SYNC pin of the TPS55288-Q1 |
Pins | Description/Label |
---|---|
1-2 | Connect GPIO9 of TPS25772-Q1 to the IRQ1 pin of the MCU |
Open | Disconnect GPIO9 of TPS25772-Q1 from the IRQ1 pin of the MCU |
Pins | Description/Label |
---|---|
1-2 | Connect GPIO9 of TPS25772-Q1 to N-FET (Q8) gate to discharge Port B VBUS |
2-3 | Connect to route GPIO9 of TPS25772-Q1 to the J20 header |
Pins | Description/Label |
---|---|
1-2 | Connect GPIO9 of TPS25772-Q1 to the EN pin of the TPS55288-Q1 |
2-3 | Connect LDO_3V3 of TPS25772-Q1 to the EN pin of the TPS55288-Q1 |
Open | Leave open to connect the EN pin of the TPS55288-Q1 to a resistor divider from VIN. The R97 and R99 resistors are DNP by default |
The J1 header is used to verify the Thermal Foldback function. The NTC pin detects the voltage of an external NTC circuit and can be connected to a thermistor (NTC or PTC) divider or NTC_VAR. NTC_VAR is the output of TPL0102 (U5), which is a I2C digital potentiometer. The divider footprints allow the use of either PTC or NTC resistors to match what is used in the system represented. Another option is to remove the jumper and directly connect pin 2 of the J1 header to an external voltage. This combination is used to test the Thermal Foldback function. The thermistor assembled on the EVM is a positive temperature coefficient (PTC). The NTC Selection header and jumper settings are shown in Figure 2-6 and described in Table 2-9 below.
Pins | Label | Description |
---|---|---|
1-2 | NTC | Connect PTC resistors to TPS25772-Q1 NTC pin |
2-3 | NTC VAR | Connect the I2C digital potentiometer to the NTC pin |
The J5 jumper can be used to select and route either the IRQ or NTC pin of the TPS25772-Q1to the Alert pin of the TMP75B-Q1. The TMP75B-Q1 Alert Connection headers and jumper settings are shown in Figure 2-7 and described in Table 2-10.
Pins | Label | Description |
---|---|---|
1-2 | IRQ | Connect the Alert pin (active low) of TMP75B-Q1 to the IRQ pin (GPIO9 of TPS25772-Q1) |
3-4 | NTC | Connect the Alert pin (active low) of TMP75B-Q1 to the NTC pin of TPS25772-Q1 |
5-6 | NTC | Connect the inverted (active high) Alert pin of TMP75B-Q1 to the NTC pin of TPS25772-Q1 |