SLVUBX9 October   2020 TPS2640

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  3. 2Description
  4. 3Schematics
  5. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
    3. 4.3 Test Setup
    4. 4.4 Test Procedure
      1. 4.4.1 Preliminary Tests
      2. 4.4.2 Output Voltage Start-Up Time Test
      3. 4.4.3 Current Limit and Fault Responses Test
      4. 4.4.4 Output Short-Circuit Protection Test
      5. 4.4.5 Reverse Polarity Test
        1. 4.4.5.1 Overvoltage Clamp Response
  6. 5EVM Board Assembly Drawings and Layout Guidelines
    1. 5.1 PCB Drawings
  7. 6Bill Of Materials (BOM)

4.1 Physical Access

Table 4-1 lists the TPS2640EVM input and output connector functionality, Table 4-2 describes the test point availability, and Table 4-3 describes the jumper functionality.

Table 4-1 Input and Output Connector Functionality
Connector Label Description
T1 CH1 VIN1(+), GND(–) CH1 input power supply to the EVM
T2 VOUT1(+), GND(–) CH1 output from the EVM
T3 CH2 VIN2(+), GND(–) CH2 input power supply to the EVM
T4 VOUT2(+), GND(–) CH2 output from the EVM
Table 4-2 Test Points Description
Channel Test Points Label Description
CH1 TP1 FLTb1 CH1 fault indicator
TP2 VIN1 CH1 power supply input
TP3 VOUT1 CH1 output voltage
TP4 SHDNb1 CH1 shutdown input
TP5 IMON1 CH1 output current monitor
TP7, TP8, TP9 GND GND
CH2 TP10 FLTb2 CH2 fault indicator
TP11 VIN2 CH2 power supply input
TP12 VOUT2 CH2 output voltage
TP13 SHDNb2 CH2 shutdown input
TP14 IMON2 CH2 output current monitor
TP16, TP17, TP18 GND GND
Table 4-3 Jumper and LED Descriptions
Jumper Label Description
J1 J1 CH1 fault LED pulled to VIN1, if installed
J2 J2 CH1 output power indicator LED pulled to VOUT1, if installed
J3 J3 CH1 bulk output capacitor connects to VOUT1, if installed
J4 MODE CH1 MODE selection
1-2 position sets latch-off mode
2-3 position sets auto-retry mode
Open position sets circuit breaker with auto-retry mode
J5 ILIM CH1 current limit setting
1-2 position sets 2.23 A
3-4 position sets 1.5 A
5-6 position sets 1 A
7-8 position sets 0.2 A
J6 UVLO CH1 UVLO setting
Sets internal UVLO (15 V), if installed
J7 OVP CH1 OVP setting
1-2 position sets Vout OVP (38 V) and 2-3 sets VIN OVP at 34.8 V
J8 J8 CH2 fault LED pulled to VIN2, if installed
J9 J9 CH2 output power indicator LED pulled to VOUT2, if installed
J10 J10 CH2 bulk output capacitor connects to VOUT1, if installed
J11 MODE CH2 MODE selection
1-2 position sets latch-off mode
2-3 position sets auto-retry mode
Open position sets circuit breaker with auto-retry mode
J12 ILIM CH2 current limit setting
1-2 position sets 2.23 A
3-4 position sets 1.5 A
5-6 position sets 1 A
7-8 position sets 0.2 A
J13 UVLO CH2 UVLO setting
Sets internal UVLO (15 V), if installed
J14 OVP CH2 OVP setting
1-2 position sets Vout OVP (38 V) and 2-3 sets Vin OVP at 34.8 V
J15 J15 CH1 input capacitor connects to VIN1, if installed
J16 J16 CH1 input capacitor connects to VIN2, if installed
D1, D7 (RED-LED) Fault LED CH1, CH2 fault indicators, respectively. LED turns on when the internal MOSFET is disabled due to any fault condition such as undervoltage, overvoltage, overload, short circuit, reverse current, and thermal shutdown.
D6, D9 (GREEN-LED) Output power indicator CH1, CH2 output power indicators, respectively. LED turns on whenever the output voltage is available.