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reference designSGM41573 | Demoboard SGM41573 Demo Board

SG-Micro SGM41573 | Demoboard SGM41573 Demo Board

I2 C NVDC Buck-Boost Charge Controller for 1- to 4-Cell Battery

Overview

TopologyBuck-Boost Converter
Input voltage3.6-24 V
Switching frequency800-1200 kHz
Output 18.13 A
IC revisionV12

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

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
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74437356022
SPECWE-LHMI SMT Power Inductor, 2.2 µH, 9.5 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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Availability
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Downloads9 files

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance2.2 µH
Performance Rated Current9.5 A
Saturation Current @ 10%10 A
Saturation Current @ 30%19.6 A
DC Resistance20.3 mΩ
Self Resonant Frequency24 MHz
MountSMT 
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