SG-Micro SGM41573 | Demoboard SGM41573 Demo Board

Description

The SGM41573 is a synchronous Buck-Boost battery charge controller with NVDC power path management. It can provide high efficiency and low component count solution for 1-cell to 4-cell batteries charging applications.The system is regulated slightly to be higher than the battery voltage, but not lower than the programmable system minimum voltage. Therefore, the system power is maintained even if the battery is completely depleted or removed.Dynamic power management (DPM) feature is also included that automatically reduces the charge current if the input current or voltage limit is reached. If the system load continues to increase after reduction of charge current down to zero, the battery enters the supplement mode and both adapter and battery power the system.

Features

• 1- to 4-Cell Charging from a Variety of Input Types
• 3.58V to 24V Input Operating Voltage Range
• USB 2.0/3.0/3.1 (Type-C)/USB PD Input Current Support
• Seamless Buck ↔ Buck-Boost ↔ Boost Transitions
• Input Overload Protection (IDPM and VDPM Regulation)
• CPU Throttling, Power and Current Monitoring
• Full nPROCHOT Profile
• Input Current Monitoring
• Battery Charge/Discharge Current Monitoring
• System Power Monitoring
• Narrow Voltage DC (NVDC) Power Path Management
• Instant-On with Depleted or No Battery
• Battery Supplementation if Adapter is Fully Loaded
• BATFET Ideal Diode Emulation in Supplement Mode
• Power-Up USB Port from Battery (USB OTG)
• 3V to 20.56V Adjustable OTG Voltage with 8mV Resolution
• Up to 6.35A Output Current Limit with 50mA Resolution
• Pass Through Mode (PTM) to Improve Efficiency
• VMIN Active Protection (VAP) Mode
• VAP Supplements Battery from Input Caps for System Power Spikes (Battery-Only Conditions)
• Input Current Optimizer Maximizes Power Extraction
• 800kHz or 1.2MHz Selectable Switching Frequency
• I2C Interface for Flexible System Configuration
• Input Current Limit Setting Pin (without I2C)
• Integrated ADC for Voltage/Current/Power Monitoring
• Low Battery Quiescent Current
• High Accuracy
• ±0.4% for Charge Voltage Regulation
• ±2% for Input/Charge Current Regulation
• ±2% for Input/Charge Current Monitor
• ±5.8% for Power Monitor
• Safety
• Thermal Shutdown
• Input/System/Battery Over-Voltage Protection
• Input/MOSFET/Inductor Over-Current Protection
• Available in a Green TQFN-4×4-32AL Package

Typical applications

• Industrial Equipment
• Buck-Boost Battery Charger
• Medical Equipment

More information

• Datasheet
• IC product information