Connections And Operating Instructions; Layout - Infineon EVAL TDA38826 1VOUT User Manual

EVAL_TDA38826_1VOUT user guide
User guide for TDA38826 evaluation board
Board information

Connections and operating instructions

2.3
The TDA38826 demo board requires a single +12 V for the input power and can deliver up to 20 A load
current. The operation modes and OCP limits can be selected through jumpers.
Table 2 Connections
Label
Input PVIN
GND
PVIN,
PGND_SNS
Output VOUT
PGND
VOUT,
PGND_SNS
Enable EN
GND
Bode BODE_A
BODE_B
Soft-start SS/VREF
FCCM
Mode
DEM
CS
P PGOOD
GOOD
GND
R RGND
GND
V VCC
CC
GND

Layout

2.4
The PCB is a six-layer board using FR4 material. Top and bottom layers use 2 oz. copper and inner
layers use 1 oz. copper. The PCB thickness is 1.6 mm. The TDA38826 and other major power
components are mounted on the top side of the board.
User Guide
Description
Connect input power (+12 V) to this pin
Return of input power
Sense pins for the input voltage
V (+1V), connect a DC load (20 A max.) to this pin
OUT
Return of V
OUT
Sense pins for the output voltage
Connect a scope probe to this pin to monitor enable signal
Or, an external enable signal can be applied to this pin to overdrive the
onboard enable signal
For bode plot measurement
Connect a capacitor to this pin to get different soft-start times
Use a jumper to select FCCM or DEM, and switching frequency. Three
preset switching frequencies are: 600 kHz, 800 kHz, 1000 kHz.
Use a resistor to connect to CS to configure the current limit
Connect a scope probe to this pin to monitor Power Good signal
GND
Differential remote sense negative input. Connect this pin directly to the negative
side of the voltage sense point. Short to GND if remote sense is not used.
Standard demo board is configured to use the internal low-dropout
regulator (LDO). Connect a scope probe to this pin to monitor the output
of the internal LDO.
7 V 1.0
2023-07-21