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
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