Dialog Semiconductor DA9231 Benutzerhandbuch - Seite 5

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UM-PM-039

DA9070 / DA9231 Fuel Gauge Development Kit

NDA Confidential

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.

Figure 1

shows the top view of DA9070

Fuel gauge EVK board and highlights the function of each section.

Battery

Connector

On-Board

+5V, +3.3V,

+2.5V, +1.8V

Ref Fuel

Regulators

Gauge IC (U5)

DA9070(U2)

USB to UART, SPI

(U7)

Battery Profile

Circuitry

STM32L151(U8)

JTAG 20 pin

DA9231(U6)

Connector (J26)

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

User Manual

Revision 2.1

28-Oct-2018

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