The Bel Power Solutions 350DNC40-12 Series is a 4 kW DC/DC converter that converts HVDC voltages in hybrid and electric vehicles to LVDC voltages suitable to power low voltage (12/24 VDC) accessories. Liquid or convection cooled DC/DC converter operates at input voltages from 240 to 430 VDC and delivers power range up to 4000 W / 3300 W (liquid / convection cooled model). Features include very high efficiency, high reliability, low output voltage noise, and excellent dynamic response to load/input changes. Input voltage range: 240-430 VDC (300-450 VDC) Typical efficiency up to 93 % Up to 4 kW power (max. 16 kW) Full galvanic isolation between input and output Liquid or convection cooling CAN bus serial interface Adjustable output voltage Over temperature, output overvoltage and overcurrent protection, input and output reverse polarity protection Protection degree IP65 and IP67 E-mark compliant Hybrid and electric vehicles Medium through heavy duty, on and off highway vehicles 2 350DNC40-12 Series MODEL DESCRIPTION 350DNC40-12-8G Liquid cooled model 350DNC40-12-8S103G Liquid cooled model 350DNC40-12-CG Convection cooled model 350DNC40-CON-KIT-8G Mating connectors kit Signal connector housing and pins, HV connector assembled with 3 m cable 350DNC40-CON-KIT-9G Mating connectors kit - housing and pins PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT 350DNC40-12-8G / 350DNC40-12-CG 240 430 Input Voltage 350 VDC 350DNC40-12-8S103G 300 450 350DNC40-12-8G / 350DNC40-12-CG 19 Input Current ADC 350DNC40-12-8S103G 16 Efficiency Vin = 350 VDC, Vo = 14.4 V, Ionom = 278 A 92 % 350DNC40-12-8G / 350DNC40-12-CG 240 Input Line Interruption Converter shutdown VDC 350DNC40-12-8S103G 300 Input Capacitance 30 F Inrush current External pre-charging circuit required PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT Vo trimmed via CAN 350DNC40-12-8G / 350DNC40-12-CG 14.4 Output Voltage 9 16 VDC BUS, 10 bit res 350DNC40-12-8S103G 13.0 Liquid cooled model 278 Output Current ADC Convection cooled model 229 Liquid cooled model 4000 Output Power W Convection cooled model 3300 Line Regulation Vinmin - Vinmax, 139 A, T coolant = 70C - 0.1 + 0.1 VDC Load Regulation Iout 10 to 90% load, T coolant = 70C - 0.075 + 0.075 VDC Output Voltage Set Point 139A, T coolant = 25C 14.35 14.4 14.45 VDC Thermal Drift - 0.05 + 0.05 %/C 14.4 VDC / Nominal load (Differential Mode 20 MHz) 280 * Periodic and Random Deviation mVp-p CAN high / low (Differential Mode 20 MHz) 300 * Load step 1: 10 to 50 % and back Load step 2: 50 to 100 % and back Transient Response Voltage over/under shoot: -1000 +1000 mV Response time within 1 % of VoSET: 1000 s Turn-on Overshoot Vonom, <100 ms 5 % Redundant Parallel Operation Up to 4 converters operating in parallel 16 kW Remote Sense Cable Drop (V) Maximum Load 0.5 V Rise time (Cext = 0 F) 200 ms Power-on-delay (From applying DC input voltage to Vo = 90 %) 1 s Turn-On Delay 3 s Power-on-time from PS WAKE UP (From PS WAKE UP ON to Vo = 90% of nom) Turn-Off Timing PS WAKEUP delay (monotonic Vo fall) 0 100 ms Capacitive Load 14.4 VDC 0 7200 F * With external capacitors 47 F (Electrolytic cap) & 1 F (X7R Ceramic cap) connected to measuring point tech.support psbel.com