Power Integrations Releases Off-Line Switching Power ICs with Dynamically Configurable Output Specifications, Fully Supports USB PD 3.0 + PPS Fast Charger

InnoSwitchTM3-Pro integrated switch IC provides digital trimming of the output voltage and current of the power supply, enabling accurate battery charging control and eliminating the need for DC-DC post-regulator circuits

Power Integrations, a leader in high-voltage integrated circuits dedicated to high-efficiency power conversion, recently announced the InnoSwitch3-Pro series of off-line flyback switching power supply 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 steps in voltage steps and 50 mA steps in current steps).

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.

The new InnoSwitch3-Pro IC uses Power Integrations' high-speed digital communications technology, FluxLinkTM, in addition to 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 InSOPTM-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 immunity and ESD capability Strong.

Author：Brittany Antonia （The author of article owns the copyright.）