The recommended
test setup is shown in Figure 2-1. Working at an ESD-protected workstation, make sure that any wrist straps, boot
straps, or mats are connected and referencing the user to earth ground before
handling the EVM.
CAUTION:
 |
|
Hot surface.
Contact can cause burns. Do not touch.
|
Table 2-1 Power Connections
| REF DES |
LABEL |
DESCRIPTION |
| J1 |
VIN+ |
Positive input voltage power connection. |
| J1 |
VIN– |
Negative input voltage power connection. |
| J2 |
VIN_EMI+ |
Positive input voltage power connection for EMI test. |
| J2 |
VIN_EMI– |
Negative input voltage power connection for EMI test.
|
| J5 |
VOUT+ |
Positive output voltage power connection. |
| J5 |
VOUT– |
Negative output voltage power connection. |
Table 2-2 DVM Connections
| REF DES |
LABEL |
DESCRIPTION |
| TP1 |
VIN+ |
Positive input voltage sensing. |
| TP2 |
VIN- |
Negative input voltage sensing. |
| TP3 |
VOUT+ |
Positive output voltage sensing. |
| TP4 |
VOUT- |
Negative output voltage sensing. |
Table 2-3 J8 Jumper
| NUMBER |
LABEL |
DESCRIPTION |
| 1 |
VOUT |
VOUT connection. |
| 2 |
BIAS |
BIAS connection. Connect #1 to #2 for the external BIAS supply
from VOUT. |
| 3 |
VCC |
VCC connection. |
| 4 |
FB |
FB connection. |
| 5 |
COMP |
COMP connection |
| 6 |
PG |
PGOOD connection. An open-collector output is connected to VCC
through 100kΩ pull-up resistor. |
| 7 |
ISET |
ISET connection. Dynamic current setting pin for the constant
current operation. |
| 8 |
AGND |
Ground connection. |
| 9 |
ILIM/IMON |
IMON connection. Current monitor and current limit programming
pin. |
| 10 |
AGND |
Ground connection. |
| 11 |
EN |
ENABLE input. Connect #10 to #11 to disable the device. |
Table 2-4 J3 Jumper
| NUMBER |
LABEL |
DESCRIPTION |
| 1 |
AGND |
Ground connection. |
| 2 |
FPWM/SYNC |
FPWM/SYNC connection. Connect #1 to #2 for PFM . Connect #2 to #3
for FPWM. Apply external clock synchronization pulse if required.
|
| 3 |
VCC |
VCC connection. |
Table 2-5 J4 Jumper
| NUMBER |
LABEL |
DESCRIPTION |
| 1 |
VCC |
VCC connection. |
| 2 |
RT |
Connection to RT resistor. Connect #1 to #2 during initial start-up
for DRSS. Connect #2 to #3 during initial start-up for the fixed
switching frequency operation. |
| 3 |
AGND |
Ground connection. |
Table 2-6 J7 Jumper
| NUMBER |
LABEL |
DESCRIPTION |
| 1 |
VCC |
VCC connection. |
| 2 |
FB |
FB connection. Connect #1 to #2 for the 12V fixed output using
internal feedback. Connect #2 to #3 for the 5V fixed output using
internal feedback. |
| 3 |
AGND |
Ground connection. |
Table 2-7 J6 Jumper
| NUMBER |
LABEL |
DESCRIPTION |
| 1 |
TRIM |
Apply an external voltage to change the output regulation target
dynamically. |
| 2 |
BODE- |
50Ω injection point for CV loop response measurement. Connected to
feedback resistor. |
| 3 |
BODE+ |
50Ω injection point for CV loop response measurement. Connected to
output capacitor. |
Figure 2-1 EVM Test
Setup