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⚫ Efficiency Up to 91% ⚫ Fixed Switching Frequency ⚫ Regulated Outputs ⚫ Remote On/Off ⚫ Low No Load Power Consumption ⚫ Fully protected (OTP/OCP/OVP/UVLO) ⚫ 3000Vac I/O Isolation ⚫ Operating Case Temperature -40 to +105℃ ⚫ Quarter Brick Size Meet Industrial Standard 2.28”x1.45”x0.5” ⚫ CB Test Certificate IEC62368-1 ⚫ UL62368-1 2nd (Reinforce Insulation) Approval ⚫ EN50155 Compliant with External Circuits ⚫ Shock & Vibration EN50155 (EN61373) Compliant ⚫ Fire & Smoke EN45545-2 Compliant ⚫ 5000m Operating Altitude MODEL NUMBER INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT INPUT CURRENT % EFF. CAPACITOR LOAD MAX. MIN. MAX. NO LOAD FULL LOAD (1) (2) CQB50W8-36S12 9-75 VDC 12 VDC 0 mA 4.17 A 8 mA 1544 mA 91 90 8000uF CQB50W8-36S15 9-75 VDC 15 VDC 0 mA 3.33 A 8 mA 1542 mA 90 90 6800uF CQB50W8-36S24 9-75 VDC 24 VDC 0 mA 2.08 A 10 mA 1541 mA 90 90 2350μF CQB50W8-36S28 9-75 VDC 28 VDC 0 mA 1.79 A 10 mA 1547 mA 90 90 2350μF CQB50W8-36S48 9-75 VDC 48 VDC 0 mA 1.05 A 10 mA 1556 mA 91 90 700μF NOTE: 1. Nominal Input Voltage 36 VDC 2. Measured at 48Vin 3. An External Input Capacitor 220uF for All Models are Recommended to Reduce Input Ripple Voltage PART NUMBER Series Nominal Input Voltage Number of Outputs Nominal Output Voltage Remote On/Off Logic Mounting Inserts CQB50W8- II O XX L -Y (Option) CQB50W8 36: 36 VDC S: Single 12: 12VDC None: Positive None: M3x0.5 Mounting Inserts 15: 15VDC 24: 24VDC N: Negative -C: Clear Mounting Insert (3.2mm DIA.) 28: 28VDC 48: 48VDC Part Number Example: CQB50W8-36S12N-C: Quarter Brick, 50W, 8:1 9-75Vdc Input, Single 12Vdc Output, Negative Logic, Clear Mounting Insert

www.cincon.com 2 REVISION: V10 CQB50W8 Series TECHNICAL SPECIFICATIONS (All specifications are typical at nominal input, full load at 25°C unless otherwise noted.) ABSOLUTE MAXIMUM RATINGS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Input Voltage Continuous All -0.3 75 Vdc Input Surge Voltage 100ms max. All 100 Vdc Operating Case Temperature At the Center Part of Base Plate All -40 105 °C Storage Temperature All -55 125 °C INPUT CHARACTERISTICS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Operating Input Voltage All 9 36 75 Vdc Input Under Voltage Lockout Turn-On Voltage Threshold All 8.4 8.8 9.0 Vdc Turn-Off Voltage Threshold All 7.6 8 8.2 Vdc Lockout Hysteresis Voltage All 0.8 Vdc Maximum Input Current Vin=9V, Full Load. All 6.7 A No-Load Input Current Vin=36V, Io=0A See Model Number Table mA Input Filter Pi filter. All Inrush Current (I2t) As per ETS300 132-2. All 0.1 A2s Input Reflected Ripple Current P-P thru 12uH inductor, 5Hz to 20MHz. All 30 mA OUTPUT CHARACTERISTICS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Voltage Set Point Accuracy Vin=36V, Full Load, Tc=25°C All -1.0 +1.0 % Output Voltage Regulation Load Regulation Full Load to No Load All ±0.2 % Line Regulation Vin=High Line to Low Line, Full Load All ±0.2 % Temperature Coefficient Tc=-40°C to 105°C All ±0.02 %/°C Output Voltage Ripple and Noise (5Hz to 20MHz bandwidth) Peak-to-Peak Full load, 22uF aluminum solid capacitor and 1uF ceramic capacitors 12Vo 150 mV 15Vo 150 24Vo 240 28Vo 240 48Vo 480 RMS. 12Vo 80 mV 15Vo 80 24Vo 120 28Vo 120 48Vo 220 Output Current Range Vin= 9 to 75V See Model Number Table A Over Current Protection Hiccup Mode. Auto Recovery. All 110 150 210 % Short Circuit Protection All Continuous, Auto Recovery. External Load Capacitance Full load (resistive) See Model Number Table uF Output Voltage Trim Range Po≦max rated power, Io ≦ Io_max All -20 +15 % Output Voltage Remote Sense Range Po≦max rated power, Io ≦ Io_max % of nominal Vo All +15 % Over Voltage Protection Limited Voltage, % of Nominal Vo All 117 125 140 %

www.cincon.com 3 REVISION: V10 CQB 50 W8 Series EFFICIENCY PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units 100% Load Vin=36V, 48V See Model Number Table % DYNAMIC CHARACTERISTICS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Output Voltage Current Transient Error Band 75% to 100% of I o_max step load change di/d t=0.1A/us (within 1% Vout nominal) All ±5 % Recovery Time All 250 us Turn-On Delay and Rise Time Full load (Constant resistive load) Turn-On Delay Time, From On/Off Control Von/off to 10%V o_set, Remote On All 20 ms Turn-On Delay Time, From Input Vin _min to 10%V o_set, Power Up All 20 ms Output Voltage Rise Time 10%V o_set to 90% Vo_set All 10 ms ISOLATION CHARACTERISTICS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Isolation Voltage (100% factory Hi-Pot tested @2sec.) 1 minute; Input to Output, All 3000 V ac

4200 Vdc

1 minute; Input to Case (Base Plate), All 2100 Vac

3000 Vdc

1 minute; Output to Case (Base Plate) All 1500 Vac

2100 Vdc

Isolation Resistance Input to Output All 100 MΩ Isolation Capacitance Input to Output All 1000 pF Input to Case (Base Plate) All None Output to Case (Base Plate) All 1000 FEATURE CHARACTERISTICS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units Switching Frequency Pulse wide modulation (PWM), Fixed All 180 200 220 KHz On/Off Control, Positive Remote On/Off logic, Refer to –Vin pin. Logic Low (Module Off) V on/off at I on/off =1.0mA All 0 1.0 V Logic High (Module On) V on/off at I on/off =0.0uA, Pin open=On All 4.0 75 V On/Off Control, Negative Remote On/Off logic, Refer to –Vin pin Logic High (Module Off) V on/off at I on/off =0.0uA, Pin open=Off All 4.0 75 V Logic Low (Module On) V on/off at I on/off =1.0mA All 0 1.0 V On/Off Current (for both remote on/off logic) Ion/off at V on/off =0V All 0.3 1 mA Leakage Current (for both remote on/off logic) Logic High, V on/off =15V All 30 uA Off Converter Input Current Shutdown input idle current All 5 10 mA Over Temperature Shutdown Temperature at the Center Part of Base Plate, Non-Latching All 110 °C Over Temperature Recovery All 100 °C GENERAL SPECIFICATIONS PARAMETER NOTES and CONDITIONS Device Min. Typ. Max. Units MTBF Io=100% of I o_max ; MIL-HDBK - 217F_Notice 1, GB, 25°C 36S12 663 K hours 36S15 759 36S24 750 36S28 740 36S48 780 Weight All 66 grams Case Material Plastic, DAP, UL 94V-0

www.cincon.com 4 REVISION: V10 CQB50W8 Series Base plate Material Aluminum Potting Material UL 94V-0 Pin Material Base: Copper Plating: Nickel with Matte Tin Shock/Vibration MIL-STD-810F/EN61373 Compliant Humidity 95% RH max. Non Condensing Altitude 5000m Operating Altitude, 12000m Transport Altitude Thermal Shock MIL-STD-810F Fire & Smoke EN45545-2 Compliant EMI Meets EN55032 & EN50155 Compliant (with external filter) Class A ESD EN61000-4-2 Level 3: Air ±8kV, Contact ±6kV Perf. Criteria A Radiated immunity EN61000-4-3 Level 3: 80~1000MHz, 20V/m Perf. Criteria A Fast Transient EN61000-4-4 Level 3: On power input port, ±2kV, external input capacitor required Perf. Criteria A Surge EN61000-4-5 Level 4: Line to earth, ±4kV, Line to line, ±2kV Perf. Criteria A Conducted immunity EN61000-4-6 Level 3: 0.15~80MHz, 10V Perf. Criteria A Interruptions of Voltage Supply EN50155 Class S3: 20ms interruptions Perf. Criteria A Supply Change Over EN50155 Class C2: During a supply break of 30 ms, Perf. Criteria A Packaging Information Link Packaging Information Immunity to Environmental Conditions. Phenomenon EN50155; 2017 Reference Clause(s) Reference Standard Test Conditions Result Low Temperature Start-up test 13.4.4 EN 60068-2-1 Class OT6 Temperature: -40℃ Duration: 2 hrs Pass Dry Heat Test 13.4.5 EN 60068-2-2 Class OT6 & ST2 Temperature: 85℃ Duration: 6 hrs Extended temperature: 100℃ Extended Duration: 10min Pass Low Temperature Storage Test 13.4.6 EN 60068-2-1 Temperature: -40℃ Duration: 16 hrs Pass Cyclic Damp Heat Test 13.4.7 EN 60068-2-30 Temperature: 25℃ - 55℃ Humidity: 90% RH Duration: 48 hrs Pass Random Vibration Test 13.4.11 EN 61373 Temperature: 25℃ +/- 10℃ Humidity: 50% +/-25% RH Frequency range: 5 ~ 150 Hz Vertical: 1.01 𝑚 𝑠⁄ 2 Transverse: 0.450 𝑚 𝑠⁄ 2 Longitudinal: 0.700 𝑚 𝑠⁄ 2 Duration: 10 min / axis Pass Simulated Long Life Test at Increased Random Vibration Levels

13.4.11 EN 61373

Temperature: 25℃ +/-10℃ Humidity: 50% +/-25% RH Frequency range: 5 ~ 150 Hz Vertical: 5.72 𝑚 𝑠⁄ 2 Transverse: 2.55 m s⁄ 2 Longitudinal: 3.96 𝑚 𝑠⁄ 2 Duration: 5 hrs / axis Pass Shock Test 13.4.11 EN 61373 Temperature: 25℃ +/-10℃ Humidity: 50% +/-25% RH Frequency range: 5 ~ 150 Hz +/-Vertical: 30 m s⁄ 2 +/-Transverse: 30 𝑚 𝑠⁄ 2 +/-Longitudinal: 50 𝑚 𝑠⁄ 2 Duration: 30ms x18 (Each axis 3 shocks) Pass

www.cincon.com 5 REVISION: V10 CQB 50 W8 Series EN45545-2 Fire & Smoke Test Conditions. Item Standard Hazard Level R22 Oxygen Index Test EN 45545-2: 2013 EN ISO 4589 -2: 2006 HL1, HL2, HL3 Smoke Density Test EN 45545-2: 2013 EN ISO 5659 -2: 2013 HL1, HL2 Smoke Toxicity Test EN 45545-2: 2013 NF X70 -100: 2006 HL1, HL2, HL3 R23 Oxygen Index Test EN 45545-2: 2013 EN ISO 4589 -2: 2006 HL1, HL2, HL3 Smoke Density Test EN 45545-2: 2013 EN ISO 5659 -2: 2013 HL1, HL2, HL3 Smoke Toxicity Test EN 45545-2: 2013 NF X70 -100: 2006 HL1, HL2, HL3 R24 Oxygen Index Test EN45545-2: 2013 EN ISO 4589 -2 HL1, HL2, HL3 R25 Glow - Wire Test EN 45545-2:2013 EN 60695 -2-11:2001 HL1, HL2, HL3 R26 Vertical Flame Test EN 45545-2: 2013 EN 60695 -11 -10: 2013 HL1, HL2, HL3 CHARACTERISTIC CURVE Power Derating Curve 100 110 0 10 20 30 40 50 60 70 80 90 100 110 Output Power (%) Ambient Temperature ( ℃) CQB50W8-36S Derating Curve without Heatsink (Vin=36V) Natural 100 ft./min. 200 ft./min. 300 ft./min. 400 ft./min. 100 110 0 10 20 30 40 50 60 70 80 90 100 110 Output Power (%) Ambient Temperature ( ℃) CQB50W8-36S Derating Curve with Heatsink QBL127 (Vin=36V) Natural 100 ft./min. 200 ft./min. 300 ft./min. 400 ft./min. 100 110 0 10 20 30 40 50 60 70 80 90 100 110 Output Power (%) Ambient Temperature ( ℃) CQB50W8-36S Derating Curve with Heatsink QBT210 (Vin=36V) Natural 100 ft./min. 200 ft./min. 300 ft./min. 400 ft./min.

www.cincon.com 6 REVISION: V10 CQB 50 W8 Series Performance Data 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficincy (%) Current Load (%) CQB50W8-36S12 Eff Vs Io @25 Deg. C 12V 24V 36V 48V 75V Power Dissipation (W) Output Power (%) CQB50W8-36S12 Pd Vs Po @25 Deg. C 12V 24V 36V 48V 75V 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficincy (%) Current Load (%) CQB50W8-36S15 Eff Vs Io @25 Deg. C 12V 24V 36V 48V 75V Power Dissipation (W) Output Power (%) CQB50W8-36S15 Pd Vs Po @25 Deg. C 12V 24V 36V 48V 75V 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficincy (%) Current Load (%) CQB50W8-36S24 Eff Vs Io @25 Deg. C 12V 24V 36V 48V 75V Power Dissipation (W) Output Power (%) CQB50W8-36S24 Pd Vs Po @25 Deg. C 12V 24V 36V 48V 75V 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficincy (%) Current Load (%) CQB50W8-36S28 Eff Vs Io @25 Deg. C 12V 24V 36V 48V 75V Power Dissipation (W) Output Power (%) CQB50W8-36S28 Pd Vs Po @25 Deg. C 12V 24V 36V 48V 75V

7 REVISION: V10

M3*0.5 Through 2pl. All Dimensions In Inches(mm) Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010 Millimeters: X.X= ±0.5 , X.XX=±0.25 BOTTOM VIEW 0.16[4.0] 0.50[12.7] PIN PIN CONNECTION Function +V Input On/Off -V Input -V Output +V Output +Sense -Sense Trim 1.86[47.2] 0.21[5.4] 0.300[7.62] 0.600[15.24] 1.030[26.15] 1.45[36.8] 0.14[3.6] 2.000[50.80] 2.28[57.9] 0.600[15.24] 0.300[7.62] 0.150[3.81] 50% 60% 70% 80% 90% 100% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficincy (%) Current Load (%) CQB50W8-36S48 Eff Vs Io @25 Deg. C 12V 24V 36V 48V 75V Power Dissipation (W) Output Power (%) CQB50W8-36S48 Pd Vs Po @25 Deg. C 12V 24V 36V 48V 75V