Dual-Phase 30W Charge Pump Charger with 1:2 Reverse Boost Mode

Overview

The HL7132D is the low voltage fast direct charger for 1 cell Li-ion and Li-polymer batteries. The device integrates a dual phase switched capacitive converter, a reverse blocking MOSFET (QRB FET) and shows 97.37% efficiency at 4.5V output and 4A current with flying capacitor,1×22µF, per phase at f_SW=1.1MHz.

The device features two different switching modes, 2:1 and 1:2 CP mode. The 2:1 CP mode allows the output voltage, VOUT, to be around half of the input voltage, VIN, and the output current to be double of the input current. In 1:2 CP mode, a voltage at VIN will be double of VOUT voltage.

The HL7132D provides CC (Constant Current) and CV (Constant Voltage) regulation through controlling the QRB FET for a safe charging operation in 2:1 CP mode. CC regulation is controlled through a close loop of the input current sensing or battery current sensing and CV regulation is controlled through a close loop of the battery voltage sensing. In addition, HL7132D also supports thermal regulation loop in case CV/CC loop causing device over-heat during regulation operating in 2:1 CP mode.

For more detailed description of the device, please download a product brief.

Features

• 20V AMR on VIN pin
• 5.5V to 11.7V Operational VIN voltage
• 5.5V Max operational output voltage
• Dual phase switched capacitor architecture
  • Optimized for 50% duty for both 2:1 and 1:2 mode
• 2:1 Charge pump mode (CP mode)
  • Continuous 6A output
• 1:2 Reverse charge pump mode (CP mode)
  • Continuous 1.5A output
• Regulation loop for charging operation through QRB FET control in 2:1 CP Mode
  • Input current regulation (I_{IN_REG})
  • Battery voltage regulation (V_{VBAT_REG})
  • Battery current regulation (I_{BAT_REG})
  • Thermal regulation (T_{DIE_REG})
• 97.37% Efficiency for VOUT=4.5V_5A with 1×22µF per phase at f_SW = 1.1MHz
• Selectable switching frequency from 500kHz to 1.6MHz
• Integrated 10-bit ADC
  • Input voltage (VIN)
  • Output voltage (VOUT)
  • Battery voltage (VBAT)
  • Input current (IIN) in bidirectional readback
  • Battery current (IBAT)
  • TS input voltage (VTS)
  • Die temperature (TDIE)
• VBAT over voltage protection in 2:1 CP mode
• Protections in 2:1 and 1:2 CP mode:
  • Over die temperature protection
  • VIN over/under voltage protection
  • Voltage tracking protection
  • Input over-current protection
  • VOUT over-voltage protection
  • IBAT over-current protection
  • VOUT short circuit protection
  • VIN short circuit protection
  • CFLY short circuit protection
  • NTC protection
• 95mm x 2.6mm 42-bump WLCSP

For more information or a full datasheet request, please contact the factory at sales@halomicro.com.