SLVUCA4 August   2021 TPS1653

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 REACH Compliance
    2. 1.2 EVM Features
    3. 1.3 Applications
  3. 2Description
  4. 3General Configurations
    1. 3.1 Physical Access
    2. 3.2 Test Equipment
      1. 3.2.1 Power Supplies
      2. 3.2.2 Meters
      3. 3.2.3 Oscilloscope
      4. 3.2.4 Loads
    3. 3.3 Test Setup
    4. 3.4 Test Procedure
      1. 3.4.1 Preliminary Tests
      2. 3.4.2 UVLO Tests
      3. 3.4.3 Current Limit Test with Step Load of 4 A to 7 A
      4. 3.4.4 Output Short-Circuit Protection Test
      5. 3.4.5 Start-Up With Short-Circuit On Output
  5. 4EVM Board Assembly Drawings and Layout
    1. 4.1 PCB Drawings
  6. 5Schematics
  7. 6Bill of Materials

3.1 Physical Access

Table 3-1 lists the TPS1653EVM input and output connector functionality, Table 3-2 describes the test point availability, and Table 3-3 describes the jumper functionality.

Table 3-1 Input and Output Connector Functionality
ConnectorLabelDescription
T1CH1VIN1(+), GND(–)CH1 input power supply to the EVM
T2VOUT1(+), GND(–)CH1 output from the EVM
T3CH2VIN2(+), GND(–)CH2 input power supply to the EVM
T4VOUT2(+), GND(–)CH2 output from the EVM
Table 3-2 Test Points Description
Channel Test Points Label Description
CH1 TP1

VIN1

 CH1 system power supply input
TP2 VOUT1 CH1 output voltage
TP3 PGOOD1 CH1 output power good
TP4 FLTb1 CH1 fault indicator
TP5

ENb1

CH1 Active low enable input control

TP6

 SHDNb1 CH1 shutdown input
TP7 IMON1 CH1 output current monitor

TP8, TP9, TP10

 GND

GND
CH2 TP11

VIN2

 CH2 system power supply input
TP12

VOUT2

 CH2 output voltage
TP13 PGOOD2 CH2 output power good
TP14 FLTb2 CH2 fault indicator
TP15 ENb2 CH2 Active low enable input control
TP16 IMON2 CH2 output current monitor
TP17 SHDNb2 CH2 shutdown input
TP18, TP19, TP20

GND

GND
Table 3-3 Jumper and LED Descriptions
Jumper Label Description
J1 J1 CH1 fault LED pulled to VIN1, if installed
J2 J2 CH1 output power good indicator LED pulled to VOUT1, if installed

J3

J3

CH1 UVLO setting: 1-2 position sets 4.5 V as input UVLO and 2-3 position sets 43 V as input UVLO
J4 J4 CH1 current limit setting
1-2 position sets 4.5 A
3-4 position sets 3 A
5-6 position sets 2 A
7-8 position sets 1 A
9-10 position sets 0.6 A
J5 J5

Disables CH1 device if J5 is open and ENb1 is pulled > 1.25 V
J6 J6 CH1 MODE selection
Open position sets latch-off mode
Closed position sets auto-retry mode
J7 J7 CH2 fault LED pulled to VIN1, if installed
J8 J8 CH2 output power good indicator LED pulled to VOUT1, if installed

J9

J9

 CH2 UVLO setting: 1-2 position sets 4.5 V as input UVLO and 2-3 position sets 43 V as input UVLO

J10

J10

 Disables CH2 device if J10 is open and ENb1 is pulled > 1.25 V
J11 J11 CH2 current limit setting
1-2 position sets 4.5 A
3-4 position sets 3 A
5-6 position sets 2 A
7-8 position sets 1 A
9-10 position sets 0.6 A
J12 J12 CH2 MODE selection
Open position sets latch-off mode
Closed position sets auto-retry mode
D3, 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, overload, short circuit, and thermal shutdown.
D4, D8 (GREEN-LED) Output power indicator CH1, CH2 output power good indicators, respectively. LED turns on whenever the output voltage is close to the VIN.