SLVUCE4A April   2022  – June 2022 TPS22811

 

  1.   TPS22811EVM: Evaluation Module for TPS22811 Load Switch
  2.   Trademarks
  3. 1Introduction
    1. 1.1 EVM Features
    2. 1.2 EVM Applications
  4. 2Description
  5. 3Schematic
  6. 4General Configurations
    1. 4.1 Physical Access
    2. 4.2 Test Equipment and Setup
      1. 4.2.1 Power Supplies
      2. 4.2.2 Meters
      3. 4.2.3 Oscilloscope
      4. 4.2.4 Loads
  7. 5Test Setup and Procedures
    1. 5.1 Hot-Plug Test
    2. 5.2 Overvoltage Test
  8. 6EVAL Board Assembly Drawings and Layout Guidelines
    1. 6.1 PCB Drawings
  9. 7Bill of Materials (BoM)
  10. 8Revision History

4.1 Physical Access

Table 4-1 lists the TPS22811EVM load switch Evaluation Board input and output connector functionality. Table 4-2 and Table 4-3 describe the test point availability and the jumper functionality. Table 4-4 describes the function of signal LEDs.

Table 4-1 Input and Output Connector Functionality

Channel

ConnectorLabelDescription
CH1J9VIN1(+), PGND(–)Input of CH1
J14VOUT1(+), PGND(–)Output of CH1
Table 4-2 Test Points Description

Channel

Test PointsLabelDescription

CH1

TP26

VIN1

CH1 input voltage

TP30

VOUT1

CH1 output voltage

TP24

EN/UVLO1CH1 EN/UVLO signal

TP25

OVLO1CH1 OVLO signal

TP16

dVdt1CH1 output voltage ramp control

TP17

IMON1CH1 current monitor

TP23

PG1

CH1 power good signal

Tp22

PGTH1

CH1 power good threshold signal

TP21

VCC_EXT1

CH1 external VCC voltage point for U8 LDO

TP15

GND1

CH1 IC GND signal

TP14,TP19

PGND1

CH1 power GND signal
Table 4-3 Jumper Descriptions and Default Positions

Channel

JumperLabelDescription

Default Jumper Position

CH1

J1

OVLO1

1-2 position sets input OVLO threshold at 3.77 V

5-6

3-4 position sets input OVLO threshold at 5.67 V
5-6 position sets input OVLO threshold to 13.76 V

J15

dVdt11-2 position sets the output slew rate to 1 mV/us

3-4

3-4 position the sets output slew rate to 0.33 mV/us
5-6 position sets the output slew rate to 0.15 mV/us

J12

IMON1

1-2 position sets VIMON/IOUT = 0.06

1-2 and 7-8

3-4 position sets VIMON/IOUT = 0.03

Select only 5-6 position if IMON pin is not used

7-8 position connects a low voltage clamping diode to protect IMON pin from transients

J13

VCC connection

1-2 position connects external voltage, VCC_EXT1 as reference for PG1

2-3

2-3 position connects onboard generated voltage, VCC as reference for PG1

J2

PGTH1

1-2 position monitors the output voltage

1-2

2-3 position monitors the input supply

Table 4-4 LED Descriptions

LED

Description

D3

When ON, indicates that PG is asserted for channel 1