Figure 2. input power path block diagram – Kontron SMARC Evaluation Carrier User Manual
Page 13
User’s Guide
13
J29
BENCH
SUPPLY
CONNECTOR
IF CHARGER POWER
AND / OR BATTERY
POWER ARE USED,
THEN BENCH SUPPLY
INPUT MUST BE LEFT
OPEN
3.0V TO 5.25V MODULE POWER
3.0V TO 5.25V CARRIER POWER
J28
CHARGER
CONNECTOR
J23, J24, J25
BATTERY
CONNECTORS
V_CHARGER
BATTERY
SELECT
JUMPERS
V_BAT
IN
IN / OUT
BATTERY CHARGER
CIRCUITS
OUT
STEP-DOWN SWITCHER
WIDE INPUT RANGE
NOT USED FOR SINGLE LEVEL CELLS
IN
OUT
IS USED FOR TWO AND THREE LEVEL
SERIES CELLS
ENABLE
5V OUTPUT IF
SWITCHER IS USED
J56
J55
MODULE POWER
CARRIER POWER
BATTERY
V_CHARGER
V_BAT
V_BAT
CONFIG
NOMINAL RANGE
SINGLE LEVEL
~ 5V
3.6V
3.0V - 4.2V
TWO SERIES
~10V
7.2V
6.0V – 8.4V
THREE SERIES
~15V
10.8V
9.0V – 12.6V
Resistor
P-FET
J27
Switcher Bypass Jumper
3.0V – 5.25V IF
SWITCHER IS
BYPASSED
(SINGLE LEVEL CELL)
JUMPERS J56 AND J55
MUST BE OPEN WHEN
POWER IS BROUGHT IN
FROM BENCH SUPPLY
CONNECTOR J29
Figure 2. Input Power Path Block Diagram
Caution!
There are two different ways to power the SMARC Evaluation Carrier and Module:
»
Bench Power Connector J29 (with jumpers J55 and J56 open).
»
Battery Charger / Battery Power Path - J28, J23, J24, J25 (with jumpers J55 and J56 closed; connector J29
open and not used).
Caution!
These paths are mutually exclusive – you must use one or the other. More details on power options, battery
options, etc. may be found in subsequent sections of this manual.
The Bench Supply connection, through J29, is convenient and easy to use. The two J29 power feeds may be wired
together and can be sourced from a single 5V supply or used separately to allow Module and Carrier power
measurements and voltage range validation.
Caution!
If using the Bench Supply power path, jumpers J55 and J56 must be open.