UM-B-065
Bluetooth® Smart Communication Interface Board
User manual
Revision 1.0
11-May-2016
CFR0012
11 of 24
© 2016 Dialog Semiconductor
Header J15:
To activate the VPP, place the jumper on the
J15
header.
●
The power switch (
SW2
) must be in position ON.
●
If the target board is supplied from an external power supply, there are two options:
○
Remove the jumper from the
J16
header and turn the power switch (
SW2
) ON.
○
Place the jumper on the
J16
header, turn the power switch (
SW2
) OFF, and supply the target
board from the external power supply.
Header J16:
There are three options to perform a power consumption measurement of the target board:
●
Remove the jumper from the
J16
header and connect an ampere-meter directly.
●
Mount a resistor on the footprint for
R82
, The resistor should not be larger than 10
. Connect an
oscilloscope with two probes on VDD and VDD_Target and measure the voltage drop. The
voltage drop will be proportional with the current consumption. For example, if a 1
resistor has
been chosen, 1 mV equals 1 mA.
●
Remove the jumper from the
J16
header, connect a Development Kit
– Pro motherboard
(DA14580DEVKIT-P_vB) in series and measure the current consumption using the
SmartSnippets
™ tool, as described in section
Figure 12: Headers J14, J15 and J16
VLDO J14
R75
8.06k
J14
1.8V OPEN
3.0V PLACED
ADJ. LDO: 3V / 1.8V
R5
0
VBUS
R7
9.53k
U2
AP2127K-ADJTRG1
IN
1
GND
2
EN
3
BP
4
OUT
5
R6
12.0k
C4
1.0uF
C5
1.0uF
VLDO
TP59
VLDO
VDD
J16
POWER SWITCH &
EXTERNAL SUPPLY POINT
VLDO
VDD_Target
SW2
SW DPDT
C43
NP
R91
NP
R82
NP
BOOST CONVERTER FOR VPP
J15
TP53
LED_4
IND
TP8
VPP
C12
1.0uF
L2
4.7uH-NRND
R1
1.00k
D7
KP
-16
08
SU
R
C
K
2
1
VBUS
U18
LT3464ETS8_TRMPBF
CTRL
1
FB
2
CAP
5
OUT
3
SW
6
VI
N
7
SHDN
8
GN
D
4
R76
0
VPP
C39
470nF
C40
2.2uF
C41
18pF
R77
5.6k
R78
24.9k
R79
NP
Q8
DMG3402L-7
1
2
3
R80
1.00k
