UM-PM-039
DA9070 / DA9231 Fuel Gauge Development Kit
NDA Confidential
User Manual
Revision 2.1
28-Oct-2018
5 of 18
© 2018 Dialog Semiconductor
Board overview
The whole system is designed to demonstrate the charge and discharge of a single lithium-polymer
battery, and the SOC (state-of-charge) prediction via fuel gauging. It also enables customer to do
independent evaluation on both DA9070 and DA9231 ICs.
Fuel gauge EVK board and highlights the function of each section.
DA9070(U2)
DA9231(U6)
USB to UART, SPI
(U7)
STM32L151(U8)
JTAG 20 pin
Connector (J26)
On-Board
+5V, +3.3V,
+2.5V, +1.8V
Regulators
Battery Profile
Circuitry
Battery
Connector
Ref Fuel
Gauge IC (U5)
Figure 1: DA9070 Fuel Gauge EVK Board Top View
Key Features
- Single USB connector supports both charging power and communication with PC
- Support STM32L151 MCU firmware update through JTAG 20 pin connector
- Two configurable modes through jumper: Chip evaluation mode; Battery Profile Mode including
Fuel Gauge Performance Test
- Supports register read/write in chip evaluation mode with Dialog's SmartCanvas GUI
- Supports battery characterization with real-time voltage and charge/discharge current measurement
which can be monitored with Dialog's Power Profile Manager (PPM) on PC
- Supports on-board customized load-profile programming
- Supports a performance comparison between Dialog's low-power software fuel gauge solution and
a reference Coulomb-counter based fuel gauge IC
