Additional Resources: Product Page 3D Model PCB Footprint datdatee 02/07/2019 pagepage 1 of 71 of 7 SERIES: PQA50-D DESCRIPTION: DC-DC CONVERTER FEATURES up to 50 W isolated output 2:1 input range (18~36 Vdc, 36~75 Vdc) smaller package single, regulated output 1,500 Vdc isolation short circuit, over current, input under voltage protection remote on/off operating temperature range (-40~85C) six sided metal shielding efficiency up to 93% input output output output ripple efficiency MODEL 1 voltage voltage current power and noise typ range min max max max typ (Vdc) (Vdc) (Vdc) (mA) (A) (W) (mVp-p) (%) PQA50-D24-S3-D 24 18~36 3.3 500 10 33 150 91 PQA50-D24-S5-D 24 18~36 5 500 10 50 150 93 PQA50-D24-S12-D 24 18~36 12 208 4.167 50 150 93 PQA50-D24-S15-D 24 18~36 15 167 3.333 50 150 93 PQA50-D24-S24-D 24 18~36 24 104 2.083 50 150 93 PQA50-D48-S3-D 48 36~75 3.3 500 10 33 150 91 PQA50-D48-S5-D 48 36~75 5 500 10 50 150 93 PQA50-D48-S12-D 48 36~75 12 208 4.167 50 150 93 PQA50-D48-S15-D 48 36~75 15 167 3.333 50 150 93 PQA50-D48-S24-D 48 36~75 24 104 2.083 50 150 93 Notes: 1. Ripple and noise are measured at 20 MHz BW byparallel cabl method with 1 F ceramic and 10 F electrolytic capacitors on the output. PART NUMBER KEY PQA50 - DXX - SXX - DX Base Number Heatsink*blan = no heatsink Input Voltage Packaging Style H = with heatsink DIP Output Voltage Notes: *Discontinued heatsink versions. cui.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Inc SERIES: PQA50-D DESCRIPTION: DC-DC CONVERTER date 02/07/2019 page 2 of 7 INPUT parameter conditions/description min typ max units 24 Vdc input models 18 24 36 Vdc operating input voltage 48 Vdc input models 36 48 75 Vdc input under voltage protection 24 Vdc input models 18 Vdc 48 Vdc input models 36 Vdc start-up voltage input over voltage protection 24 Vdc input models 36 Vdc 48 Vdc input models 75 Vdc input under voltage protection 24 Vdc input models 16 Vdc 48 Vdc input models 32 Vdc under/over voltage shutdown input over voltage protection 24 Vdc input models 40 Vdc 48 Vdc input models 81 Vdc for maximum of 1 second surge voltage 24 Vdc input models -0.7 50 Vdc 48 Vdc input models -0.7 100 Vdc start-up time nominal input, constant load 10 ms models ON (CTRL open or connect TTL high level, 3~12 Vdc) 1 CTRL models OFF (CTRL connect GND or low level, 0~1.2 Vdc) input current (models OFF) 6 mA filter pi filter Note 1. CTRL pin voltage is referenced to GND. OUTPUT parameter conditions/description min typ max units line regulation full load, input voltage from low to high 0.2 0.5 % load regulation 10% to 100% load 0.5 1 % voltage accuracy 1 3 % adjustability 10 % switching frequency PWM mode 300 kHz transient recovery time 25% load step change 300 500 s transient response deviation 25% load step change 3 5 % temperature coefficient 100% load 0.02 %/C PROTECTIONS parameter conditions/description min typ max units 3.3 Vdc output models 3.9 Vdc 5 Vdc output models 6.2 Vdc 2 over voltage protection 12 Vdc output models 15 Vdc 15 Vdc output models 18 Vdc 24 Vdc output models 30 Vdc over current protection 135 % short circuit protection continuous, automatic recovery, hiccup over temperature protection 110 C Note 2. Module needs to be re-started after over voltage protection. cui.com