High-efficiency, low BoM, DC/DC buck converter in GF 22FDX

Key Benefits

  • Dual Mode PWM for high efficiency at low loads​
  • Support of small, low-cost inductors: down to 4.7 µH for 100 mA
  • Programmable output voltage (5 bits)​
  • Configurable power stages for area optimization​
  • Embedded Bandgap voltage reference, oscillator and I/O pads​
  • Regulator status output flag (ROK)

Key Features

PARAMETERS CONDITION
Minimum value
Typical value
Maximum value
Input Voltage
- 1.9 V 5.5 V
Output Voltage
- 0.6 V 3.3 V
Output current configuration
- - 1000 mA;100 mA;200 mA;300 mA;400 mA;500 mA -

Applications

  • Bluetooth
  • Cellular IoT
  • GNSS
  • Hearing aids
  • NB-IoT
  • Smart Headset
  • Smart Speaker
  • TWS Earpods
  • ULP MCU
  • Voice-controlled devices
  • Voice Assistant
  • WiFi

Key Performances

  • Peak efficiency (typ): up to 95 %
  • Efficiency down to 0.2 IMAX: 90%
  • efficiency down to 0.01 IMAX: 70%
  • Output voltage DC accuracy: 3%

Technical information

  • Technology: GlobalFoundries 22 FDX
  • Add-ons:
    • -