Pi Offers Off-line Switching Power Supply Ics With Dynamic Output Specification, Fully Supporting Usb Pd 3. 0 Pps Fast Charging

Power  Integrations, a leader in high-voltage integrated circuits dedicated to  high-efficiency power conversion, today announced the InnoSwitch3-Pro  series of off-line flyback switching power ICs with constant  voltage/constant current and constant power output characteristics. The  new device provides 65 W of output power and offers 94% efficient  performance over a wide range of input voltage and load conditions. In  addition, the output voltage and current can be precisely controlled  with a dynamic step through a simple two-wire I2C interface (10 mV step  step and 50 mA step step). The new device can work with the  microcontroller and can also control and monitor the offline power  supply according to the system CPU instructions. Its  application covers almost all fast charge protocols, including USB Power  Transfer (PD) 3.0 + PPS, Quick ChargeTM 4/4+, AFC, VOOC, SCP, FCP, and  other industrial and consumer battery chargers, dimmable LEDs Ballast driver and output adjustable industrial power supply.

The  InnoSwitch3-Pro power conversion IC integrates the microprocessor VCC  power supply and eliminates the need to add a peripheral LDO to power an  external microprocessor. In addition, an n-channel MOSFET driver  circuit is integrated to enable or disable the main power output of the  power supply. Because  the new device integrates telemetry for bus voltage, current, and fault  reporting, as well as dynamically settable protection features such as  over-temperature protection (OTP) for externally-set power supplies,  input over/under voltage (OV/ UV protection, output overvoltage/undervoltage (OV/UV) protection, and  short circuit protection mechanisms allow the number of BOM components  of complex off-line power supplies to be significantly reduced, and the  complexity of power supply design can be greatly simplified.

Shyam  Dujari, director of product marketing for Power Integrations, said:  "The AC-DC power conversion market is undergoing a rapid transition.  System designers need a programmable switch-mode power supply solution  that can accommodate a variety of fast-charge protocols, including  recent ones. The  completed USB PD 3.0 + PPS specification was formulated.” He further  stated that “the ability to precisely control the output voltage and  current of the power supply in different application environments is  also very useful for designers of professional applications that require  low-volume production because they can use it. Software can easily configure output specifications during production  or during installation to meet the power requirements of different  applications."

The  new InnoSwitch3-Pro IC uses Power Integrations' high-speed digital  communications technology, FluxLinkTM, and it also features synchronous  rectification, quasi-resonant switching, and accurate secondary-side  feedback detection and control circuitry. The  new device has passed CQC, UL, and TUV (EN60950) certification and can  be safely bridged between the primary and secondary safety barriers. Its  InSOP?-24D package also provides a low-profile solution for efficient  heat dissipation, with wider creepage distances (>11.5 mm) and  clearances on the primary and secondary sides for greater reliability  and surge and ESD immunity Strong.