New Industry Products

600mA DC-DCs with Fast Transient Response Deliver Precise and Stable Voltages

November 12, 2018 by Paul Shepard

The XC9281/XC9282 series announced by Torex are 600mA synchronous rectification dc-dc converters adopting HiSAT-COT control. Due to increasing the oscillation frequency to high frequency, 0.47uH coil with a size of 1.0 x 0.5 mm can be used. A 0.6 x 0.3 mm ceramic capacitor can be used for the input capacitance and the output capacitance, realizing that the mounting area including peripheral components can be reduced to 6.6 mm2.

Target applications include smart phones, wireless earphones and headsets, wearable devices, digital cameras, portable game consoles, smartcards, and similar systems.

Due to increasing the oscillation frequency to a high frequency, the mounting area is reduced. Additionally, an efficiency equal to or higher than that of conventional products can realize by improving on-resistance and current consumption.

Because of these features, XC9281/XC9282 series are well-suited for equipment requiring miniaturization and low-profile mounting area, and battery-powered equipment such as mobile equipment.

Moreover, the high-speed transient response technology of the HiSAT-COT control makes it possible to minimize the fluctuation of the output voltage for a load transient condition. This feature is optimal for applications such as powering FPGAs requiring a fast response and output voltage stability for an instantaneous load fluctuation.

Summary of features and specifications:

  • Input Voltage Range: 2.5V to 5V
  • Output Voltage Range :
    • 7V to 1.15V(±2.0%)
    • 2V to 3.6V(±1.5%)
  • Output Current: 600mA
  • Quiescent Current: 11µA(XC9282 PWM/PFM Auto)
  • Oscillation Frequency: 6MHz
  • Efficiency: 89% (VIN=3.7V, VOUT=1.8V, IOUT=300mA)
  • Control Methods:
    • HiSAT-COT Control
    • PWM Control (XC9281)
    • PWM/PFM Auto (XC9282)
  • Current Limit Protection
  • Functions:
    • Soft-Start, UVLO
    • CL Discharge (Type B)
  • Input / Output Capacitor: Ceramic Capacitor
  • Operating Ambient Temperature: - 40℃ to + 105℃
  • Package:
    • LGA-6B01(1.2 x 1.2 x 0.3mm)
    • WLP-5-06(0.88 x 0.96 x 0.33mm)
  • Environmental: EU RoHS Compliant, Pb Free

To find out more you can visit Torex at Electronica 2018, Hall B5 Booth 427