Hardware; Jumper Options; Use Bat Power (External Power Supply Connection) - TDK PowerHap Application Note

Piezo Haptic Actuators - PowerHap
Application note for evaluation kit 60 V
Preliminary data

3 Hardware

3.1 Jumper options

The BOS1901-KIT is provided by default with jumpers SB2, SB3 and SB1X set to operate from USB power, UPI
mode off.
Table 2: Jumper options
Function
SB2
USB Power
UPI OFF SB3
(default)
SB1x
SB2
USB Power
SB3
UPI ON*
SB1x
SB2
BAT Power
SB3
UPI OFF
SB1x
SB2
BAT Power
SB3
UPI ON*
SB1x
* Refer to the section of the jumper settings for details and limitations.

3.1.1 Use BAT power (external power supply connection)

From default state:

Remove power to the evaluation PCB by unplugging the USB cable

Cut junction of SB3 jumper

Put a solder joint on SB2

Optional, solder a capacitor on C19 if additional decoupling is required on VBUS node

Plug the USB cable to the evaluation PCB for power and communication to the microcontroller
section

Apply an external DC source ranging from 3 V to 5 V on connector P5

Push and release "RST" button (S2), then wait for LED D1 (green) to light up and LED D2 (red) to
turn off
Note: the "USR" button (S1) has reserved usage on the current firmware.
PPD PI AE/IE PD
Please read Cautions and warnings and
Important notes at the end of this document.
Shorts HW
BAT
SB2
USB
SB3
VBUS
BOS1901
VDD
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2019-05-08