Functional description
FRDM-KW36 Minimum BoM Development Boa
rd User’s Guide, User’s Guide, Rev. 0, 09/20187
NXP Semiconductors
11
Figure 12. KW36 Minimum BoM Board power management circuit.
The KW36 Minimum BoM Board can be powered by the following means:
•
From an external battery (Coin-cell – CR2032). Use jumper J4 pins 1-2 or solder R234.
•
From an external DC supply in the following ways:
o
Connect two wires: a wire that can supply 1.71 to 3.6 VDC (BT1-1) and another wire to
the ground (BT1-2) in bypass mode. By default, KW36 DC-DC is configured in buck
mode, then, the voltage should be in the range of 2.1 V to 3.6 V.
Orange LED marked as D4 is available as a power indicator.
The KW36 Minimum BoM Board can be configured to use either of the DCDC converter operating
modes (default). These modes are Bypass or Buck (default). Moving the configuration from buck
(default) to bypass mode need to modify some components:
Table 1.
: Buck or bypass mode table
Buck mode
Bypass mode
Figure
R1
x
-
10
R2
-
x
10
R3
-
x
10
R4
x
-
10
R5
-
x
9
R6
x
-
9
R7
-
x
10
R9
x
x
8
R10
-
-
8
L3
x
-
8
