Picor Corporation Active Input EMI Filter QPI-9LZ

Description The QPI-9 includes the total Hot-Swap function along with an EMI filter for V•I Chip applications. The EMI filter is designed to attenuate the conducted common-mode (CM) and differential-mode (DM) noise generated by the higher switching frequencies of the V•I Chips. The QPI-9 is designed for use on a 24 Vdc bus. The inrush current limit and circuit breaker are designed to deliver over 140 W of power with an input voltage of 24 V on the converter. The QPI-9's internal fault timer allows it to operate safely in the event of a short across its output. The QPI-9 enters a retry mode where it will attempt to restart until the short condition is removed. The undervoltage and overvoltage thresholds can be trimmed separately via the UVEN and OV inputs using external series resistors. The QPI-9 provides two Power Good signals, PWRGD1 referenced to the input ground and PWRGD2 to the output ground, which can be used to enable other circuits along with the V•I Chip converter. Features >50 dB CM attenuation at 1 MHz >70 dB DM attenuation at 1 MHz 40 Vdc (max input) 100 Vdc surge 100 msec 707 V hi-pot hold off to shield 6 A breaker with delay plus 12 A limiter 25 x 25 x 4.5 mm SiP (System-in-Package) Low profile LGA package -40° to +100°C PCB temperature Hot-Swap & filter combined saves PCB space Efficiency: >98% Connects between OR’ing diodes & power conversion input hold-up capacitance cTüVus approved