O2Micro Provides Intelligent Battery products including BMU, AFE, PMIC and DFE for Home Applications

Intelligent Battery products include O2Micro's Battery Management Unit (BMU), Analog Front End (AFE), Digital Front End (DFE), Cell monitors (Secondary Protection), Power Management IC (PMIC), High-side FET Driver, Buck-Boost Converter and PD+ Buck-Boost Converter, highly integrated mixed signal ICs designed with Cool Battery Technology®. This family of battery and power management products provides next-generation, safe battery management for home applications such as vacuum cleaners, power tools, garden tools, electric bikes, electric scooters, Electric Vehicles (Battery EV, Hybrid EV, Light EV), Uninterruptible Power Supply (UPS) systems, Energy Storage Systems (ESS), Automotive, Power Bank, Car Charger, USB delivery and other rechargeable battery-powered products, enabling longer battery operating time.

Patented BMU ICs offer cell-balancing architecture and protection mechanisms to ensure the highest level of safety.

O2Micro also supplies AFE/DFE and BMU with a microcontroller that provides flexible solutions to ensure the safe operation of Li-Ion/Polymer, Li-FePO4, and Sodium batteries, and long battery life.

AFE and DFE ICS

Features

• Highly integrated, cost-effective, advanced Analog/Digital Front End (AFE/DFE) ICs - 3 to 20 Cells

• Two independent high-accuracy ADCs

• 14bit/16bit ADC for Voltage, temperature, fast current measurement

• 16bit ΣΔ ADC for High accuracy current and coulomb counting measurement

• Optional synchronous Voltage-Current measurement support

• Dedicated LDO to power system MCU

• High accuracy 3-levels discharge Over-Current protections and one charge Over-Current protections

• Internal Die Over-Temperature Protection

• Internal Die temperature monitoring

• Cell balancing - internal and external

• Cell- Tap-Open (CTO) Detection

• I²C or SPI Interface and Interrupt Output to External Host

• Integrated low-side or high-side CHG/DSG drivers

• Ultra-low standby current  

• Integrated function safety features

• Safe operation for Li-Ion/Polymer, Li-FePO4 battery, and Sodium battery

BMU ICS (with cell balance and current protection)

Features

• Highly integrated, cost-effective BMU family 3 to 18 cells

• Voltage, current, and temperature monitoring with high accuracy ADC and complete hardware protections

• Standalone mode and host mode are selectable

• Cell balancing - internal and external

• Dedicated LDO to power system MCU

• High accuracy 3-level discharge overcurrent protections

• Cell Balance Over Temperature protection

• Optional eLock and PWM control input

• Optional End of charge (EOC) function

• Cell- Tap-Open (CTO) Protection

• Monitors individual cells and Packs Voltage

• I²C Interface and ALERT Output to Optional External Host

• Ultra-low standby current

• Safe operation for Li-ion/Polymer, Li-FePO4 battery, and Sodium battery

BMU ICS (without cell balance and current protection)

Features

• Highly integrated, extremely low-power BMU family to support 3 to 10 cells

• Over/Under Voltage and Over/Under temperature protections

• Cell- Tap-Open (CTO) Protection

• Up to 10kΩ cell tap filter Resistor (RF)

• I²C communication

• Flexible CHG/DSG output setting

• Ultra-low standby current 1μA (Typ.) without CHGFET/DSGFET driver

• Safe operation for Li-Ion/Polymer, Li-FePO4 battery, and Sodium battery

BMU ICS (without cell balance）

Features

• Highly integrated, extremely low-power BMU family to support  3 to 5 cells

• Over/Under Voltage and Over/Under temperature protections(COT/DOT/CUT)

• Optional discharge Under temperature protection (DUT)

• High accuracy 3-level discharge over current protections(DOC1/DOC2/SC)

• High accuracy charge over current protection (COC)

• I²C communication

• Cell- Tap-Open Protection (CTO)

• Temperature-Sensor-Open Protection (TSO)

• Up to 10k Cell Tap Filter Resistor RF

• Ultra-low standby current

• Safe operation for Li-Ion/Polymer, Li-FePO4 battery, and Sodium battery

BMU ICs (with Embedded Microcontroller)

Features

• Highly integrated, high-performance BMU family to support 3 to 10 cells

• Embedded high-performance 32Bit microcontroller

• Extended Flash for Data/code storage

• Cell balancing - internal and external

• High-accuracy cell voltage, current, and temperature (Multi-channels) monitors

• Support SOC and SOH functionality with Coulomb Counting

• Independent multiple-fast over-current/Short-Circuit protections

• Multiple serial buses: SPI, UART, and I²C

• Dedicated FET driver for Charge/Discharge control

• Standalone Hardware based auto-scan to improve safety

• Support multiple GPIOs and general-purpose ADC inputs

• DMA control to directly access related blocks

• Precision Real Time Clock with the optional crystal

• Support multiple low power modes: active mode, sleep mode, deep sleep mode, and power down mode

• Function safety features

• Safe operation for Li-Ion/Polymer, Li-FePO4 battery, and Sodium battery

Protection Fet Drivers
Features

• Independent fast on/off high-side N-MOSFET drivers

• Integrates pre-charge FET control

• Scalable external capacitor-based charge pump to accommodate different numbers of FETs in parallel

• Charge pump state indicator

• Wide battery voltage range

• Direct Microcontroller control inputs: 3.3V and 5V compatible, ground referenced

• Integrates OverLoad protection and Load-off/Charge-in detection

• Low power consumption

Power Management IC (PMIC)

Features

• High voltage Low Dropout (LDO) Voltage Regulator

• Dual inputs or single input

• Fixed 5.0V or 3.3V output accuracy: ± 1%   Accuracy

• Wide output current range

• Wide operating voltage range and operating temperature range

• Integrates SC, UVLO, and thermal shutdown functions

• Fast Transient Response

• Power-Good indicator

• Low Power Consumption

Buck-boost Converter
Features

• Built-in Seamless Buck-Boost Transition to comply with the USB Power Delivery Specification for PPS support

• I²C Interface

• Built-in Charge Pump for driving cost-effective NFET as the power channel control

• Hardware and Firmware-based Protections: OVP, UVP, OCP, SCP, and IOTP with adjustable threshold and debounce time

• Integrated  Constant Current (CC), Constant Voltage (CV), and  Constant Power (CP) control loop with programmable setting

• The Shutdown Current is less than 5μA

• AEC-Q100

PD + BUCK-Buck-boost Converter

Features

• Highly integrated Buck-Boost converter with embedded USB PD (Power Delivery) controller

• Optional USB PD Dual Ports Support forOZ85413

• Supports latest USB PD 3.1 specification, BC1.2

• Support Full PPS (Programmable Power Supply) with a range from 3.3V to 21.0V; Built-in Constant Voltage (CV), Constant Current (CC), and Constant Power (CP) control loop for high resolution (6mV/step; 9.6mA/step)

• Built-in Seamless Transition Among Buck, Buck-Boost, and Boost Operations

• Built-in 32-bit MCU subsystem

• In-System Programming or In-Application Programming by I²C, UART

• Built-in Cable Compensation algorithm

• Safety functions include Over-Voltage Protection (OVP); Input Under Voltage Lockout (UVLO); Over-Temperature Protection (OTP); Over-Current Protection (OCP), and Short-Circuit Protection (SCP) with adjustable threshold

• The Shutdown Current is less than 1μA

• AEC-Q100