DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series FEATURES 15W&20W, wide input isolated & regulated dual / single output DC/DC converter Wide range of input voltage (2:1) Efficiency up to 90% Isolation voltage :1.5K VDC Output over-voltage, over-current and short circuit protection Operating temperature range: -40 to +85 Six-sided metal shielding package Meet CISPR22/EN55022 CLASS A A2S (wring mounting) and A4S (35mm rail mounting) products featuring anti-reverse connection for input Meet EN60950 International standard pin-out Patent Protection RoHS VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 series are applied to wide voltage range input situation such as data transmission device, battery power supply device, telecommunication device ,distributed power supply system, remote control system, industrial robot system etc. Selection Guide Certification Output Voltage (VDC) Output Current (mA)(Max./Min.) Efficiency (%,Min./Typ.) @ Full Load VRA1205LD-15WR2 5 1500/75 84/86 1020 VRA1212LD-15WR2 12 625/32 86/88 495 VRA1215LD-15WR2 15 500/25 86/88 165 24 313/16 86/88 200 3.3 4000/200 85/87 10500 5 3000/150 87/89 4020 VRB1212LD-15WR2 12 1250/63 87/89 1035 VRB1215LD-15WR2 15 1000/50 87/89 705 VRB1224LD-15WR2 24 625/32 88/90 250 VRA2405LD-15WR2 5 1500/75 84/86 1020 VRA2412LD-15WR2 12 625/32 86/88 495 VRA2415LD-15WR2 15 500/25 86/88 165 24 313/16 86/88 200 3.3 4000/200 86/88 10500 5 3000/150 88/90 4020 VRB2412LD-15WR2 12 1250/63 87/89 1035 VRB2415LD-15WR2 15 1000/50 88/90 705 VRB2424LD-15WR2 24 625/32 88/90 250 VRA4805LD-15WR2 5 1500/75 84/86 1020 VRA4812LD-15WR2 12 625/32 86/88 495 15 500/25 86/88 165 24 313/16 86/88 200 3.3 4000/200 84/86 10500 VRB4805LD-15WR2 5 3000/150 85/87 4020 VRB4812LD-15WR2 12 1250/63 87/89 1035 Part No. Input Voltage (VDC) Nominal (Range) VRA1224LD-15WR2 VRB1203LD-15WR2 VRB1205LD-15WR2 CE VRA2424LD-15WR2 VRB2403LD-15WR2 VRB2405LD-15WR2 VRA4815LD-15WR2 VRA4824LD-15WR2 VRB4803LD-15WR2 12 (9-18) 24 (18-36) 48 (36-75) Max. 20 40 80 Output 2015.08.11-B/1 Max. Capacitive Load (F) Page 1 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series VRB4815LD-15WR2 15 1000/50 88/90 705 24 625/32 87/89 250 VRA1205LD-20WR2 5 2000/100 84/86 4800 VRA1212LD-20WR2 12 834/42 86/88 800 VRA1215LD-20WR2 15 667/34 86/88 500 24 417/21 86/88 300 3.3 5000/250 84/86 18700 5 4000/200 87/89 9600 VRB1212LD-20WR2 12 1667/84 87/89 1600 VRB1215LD-20WR2 15 1333/67 87/89 1000 VRB4824LD-15WR2 VRA1224LD-20WR2 VRB1203LD-20WR2 VRB1205LD-20WR2 CE 48 (36-75) 12 (9-18) 80 20 VRB1224LD-20WR2 24 834/42 88/90 470 VRA2405LD-20WR2 5 2000/100 84/86 4800 VRA2412LD-20WR2 12 834/42 86/88 800 VRA2415LD-20WR2 15 667/34 86/88 500 VRA2424LD-20WR2 24 417/21 86/88 300 3.3 5000/250 84/86 18700 VRB2403LD-20WR2 VRB2405LD-20WR2 24 (18-36) 40 5 4000/200 88/90 9600 VRB2412LD-20WR2 12 1667/84 87/89 1600 VRB2415LD-20WR2 15 1333/67 88/90 1000 VRB2424LD-20WR2 24 834/42 88/90 470 VRA4805LD-20WR2 5 2000/100 84/86 4800 VRA4812LD-20WR2 12 834/42 86/88 800 VRA4815LD-20WR2 15 667/34 87/89 500 VRA4824LD-20WR2 24 417/21 87/89 300 3.3 5000/250 84/86 18700 VRB4803LD-20WR2 VRB4805LD-20WR2 48 (36-75) 80 5 4000/200 86/88 9600 VRB4812LD-20WR2 12 1667/84 87/89 1600 VRB4815LD-20WR2 15 1333/67 88/90 1000 VRB4824LD-20WR2 24 834/42 87/89 470 Note: Series with suffix "H" are heat sink mounting; series with suffix "A2S" are chassis mountingwith suffix "A4S" are DIN-Rail mounting, for example VRB2405LD-20WHR2A2S is chassis mounting of with heat sink,VRB2405LD-20WR2A4S is DIN-Rail mounting of without heat sink;If the application has a higher requirement for heat dissipation, you can choose modules with heat sink; Absolute maximum rating without damage on the converter, but it isn't recommended; The efficiency of A2S (wiring type) and A4S (rail type) products is 2% lower than the above-mentioned value due to the reverse connection protection for input; The capacitive loads of positive and negative outputs are identical. Input Specifications Item Operating Conditions 12VDC input Input Current (full load / no-load) 15W 24VDC input 48VDC input 12VDC input Input Current (full load / no-load) 20W 24VDC input 48VDC input Min. Typ. Max. 3.3VDC/5VDC output -- 1454/60 1489/75 others -- 1421/25 1454/40 3.3VDC/5VDC output -- 727/35 745/50 others -- 717/20 727/35 3.3VDC/5VDC output -- 364/35 373/50 others -- 356/15 364/25 3.3VDC/5VDC output -- 1938/60 1985/75 others -- 1896/25 1940/40 3.3VDC/5VDC output -- 969/40 992/50 others -- 948/20 970/35 3.3VDC/5VDC output -- 485/25 497/40 others -- 474/10 485/25 2015.08.11-B/1 Unit mA Page 2 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series Reflected Ripple Current Input impulse max.) Voltage (1sec. 12VDC input -- 30 -- 24VDC input -- 30 -- 48VDC input -- 30 -- 12VDC input -0.7 -- 25 24VDC input -0.7 -- 50 48VDC input -0.7 -- 100 Input Filter VDC Pi filter Starting Time Nominal input & constant resistance load Module switch on Ctrl* Module switch off Input current when switched off -10 -ms Ctrl suspended or connected to TTL high level (2.5-12VDC) Ctrl pin connected to GND or low level (0-1.2VDC) -- 1 mA -- Hot Plug Unavailable Note: * The voltage of Ctrl pin is relative to input pin GND. Output Specifications Item Output Voltage Accuracy Operating Conditions Positive output Negative output Min. Typ. Max. -- 1 3 Balance of Output Voltage Dual output, balanced load -- 0.5 1 Line Regulation Full load, the input voltage is from low voltage to high voltage -- 0.2 0.5 Load Regulation 5%-100% load -- 0.5 1 Cross Regulation Dual output, main circuit with 50% load, auxiliary circuit with 10%-100% load -- -- 5 -- 300 500 Transient Recovery Time 25% load step change Transient Response Deviation Unit % s -- 3 5 % Temperature Drift Coefficient Full load -- 0.02 -- %/ Ripple & Noise * 20MHz bandwidth -- 70 100 mV p-p -- 10%Vo -- 3.3VDC output -- 3.9 -- 5VDC output -- 6.2 -- 12VDC output -- 15 -- 15VDC output -- 18 -- 24VDC output -- 30 -- 150 -- Trim Over-voltage Protection Over-current Protection Short circuit Protection -- Input voltage range VDC % Hiccup, Continuous, self-recovery Note: *Ripple and noise are measured by "parallel cable" method, please see DC-DC Converter Application Notes for specific operation. General Specifications Item Operating Conditions Min. Isolation Voltage Input-output, with the test time of 1 minute and the leak current lower than 1mA 1500 Isolation Resistance Input-output, isolation voltage 500VDC Isolation Capacitance Operating Temperature Input-output, 100KHz/0.1V 15W Typ. -- Max. Unit -- VDC M 1000 -- -- 24VDC output -- 2000 -- others -- 1000 -- -- 1000 -- -40 -- +85 -55 -- +125 20W see Fig. 1 Storage Temperature Storage Humidity Non-condensing 5 -- 95 Max. Casing Temperature Pin Welding Resistance Temperature Within the operating temperature curve Welding spot is 1.5mm away from the casing, 10 seconds -- -- +105 -- -- +300 2015.08.11-B/1 pF %RH Page 3 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series Vibration 10-55Hz, 10G, 30 Min. along X, Y and Z Switching Frequency PWM mode MTBF MIL-HDBK-217F@25 -- 300 -- KHz 1000 -- -- K hours Physical Specifications Casing Material Aluminum alloy Horizontal package 50.80*25.40*11.80mm Without heat sink A2S wiring package 76.00*31.50*21.20 mm A4S rail package Dimension With heat sink Weight 76.00*31.50*25.80 mm Horizontal package 50.80*25.40*16.30mm A2S wiring package 76.00*31.50*25.10 mm A4S rail package 76.00*31.50*29.70 mm Without heat sink Horizontal package/A2S wiring package/A4S rail package 28.00g/50.00g/70.00g(Typ.) With heat sink 36.00g/58.00g/78.00g(Typ.) Horizontal package/A2S wiring package/A4S rail package Cooling Method Free air convection EMC Specifications CISPR22/EN55022 CLASS A (Bare component)/ CLASS B (see Fig.3- for recommended circuit) CISPR22/EN55022 CLASS A (Bare component)/ CLASS B (see Fig.3- for recommended circuit) CE EMI RE EMS ESD IEC/EN61000-4-2 Contact 4KV perf. Criteria B RS IEC/EN61000-4-3 10V/m perf. Criteria A EFT IEC/EN61000-4-4 2KV (see Fig.3- for recommended circuit) perf. Criteria B Surge IEC/EN61000-4-5 2KV (see Fig.3-for recommended circuit) perf. Criteria B CS IEC/EN61000-4-6 3 Vr.m.s perf. Criteria A Voltage dips, short interruptions IEC/EN61000-4-29 0-70% and voltage variations immunity perf. Criteria B Product Characteristic Curve 20W with heat sink 100 80 60 40 Output Powe r Perce ntage(%) Output Powe r Perce ntage(%) 15W 120 without heat sink Safe O perating A rea 20 0 -40 0 40 65 70 85 120 120 with heat sink 100 80 without heat sink 60 40 Safe O perating A rea 20 0 -40 0 40 60 65 85 120 Oper ating Temper atur e( ) Oper ating Temper atur e( ) Fig. 1 2015.08.11-B/1 Page 4 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series Design Reference 1. Typical application All the DC/DC converters of this series are tested according to the recommended circuit (see Fig. 2) before delivery. If it is required to further reduce input and output ripple, properly increase the input & output of additional capacitors Cin and Cout or select capacitors of low equivalent impedance provided that the capacitance is no larger than the max. capacitive load of the product. Dual Vin DC Cin DC GND Vout(VDC) +Vo Cout 0V Cout Dual +Vo DC Cin DC Single Cout 100 24 47 470 100 24 Fig. 2 100 3.3/5 12/15 0V GND Cout(F) 220 12/15 -Vo Single Vin Cin(F) 5 220 100 2. EMC solution-recommended circuit Parameter description V in MOV CY1 LDM1 FUSE Vin C0 + DC/DC C1 GND +Vo GND CY2 FUSE C2 LOAD -Vo (0V) Notes: Part in the Fig. 3 is used for EMS test and part for EMI filtering; selected based on needs. Vin:24V Vin:48V Choose according to actual input current MOV -- S14K35 S14K60 C0 680F/25V 330F/50V 330F/100V C1 1F/50V 1F/50V 1F/100V C2 Fig. 3 Vin:12V Refer to the Cout in Fig.2 LDM1 4.7H CY1CY2 1nF/2KV EMC solution-recommended circuit PCB layout Fig. 4 Note: the min. distance of the bonding pads between input & output isolation capacitors (CY1/CY2) shall be 2mm. 2015.08.11-B/1 Page 5 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series 1.Application of Trim and calculation of Trim resistance Calculation formula of Trim resistance: +Vot +Vot R1 V ref R2 RT R1 R3 Trim V ref RT R3 0V Trim up Trim down aR 2 R 2 -a -R 3 a= Vref R1 Vo'-Vref down : R T = aR 1 R 1 -a -R 3 a= Vo'-Vref R2 Vref Trim R2 0V up: R T = Note: Leave open if not used. RT: Resistance of Trim. a: User-defined parameter, no actual meanings. Applied circuits of Trim (Part in broken line is the interior of models) Vout(V) R1(K) R2(K) R3(K) Vref(V) 3.3 4.801 2.863 15 1.24 5 2.883 2.864 10 2.5 12 10.971 2.864 17.8 2.5 15 14.497 2.864 17.8 2.5 24 24.872 2.863 20 2.5 3. It is not allowed to connect modules output in parallel to enlarge the power 4. For more information about Mornsun EMC Filter products, please visit www.mornsun-power.com to download the Selection Guide of EMC Filter Dimensions and Recommended Layout(without heatsink) 2015.08.11-B/1 Page 6 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series Dimensions (with heatsink) A2S Wiring Package Dimensions(without heatsink) 2015.08.11-B/1 Page 7 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series A2S Wiring Package Dimensions(with heatsink) A4S Rail Package Dimensions(without heatsink) 2015.08.11-B/1 Page 8 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation DC/DC Converter VRA(B)_LD-15WR2 & VRA(B)_LD-20WR2 Series A4S Rail Package Dimensions(with heatsink) Notes: 1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Horizontal Packing Bag Number : 58200035(without heatsink),58200051(with heatsink), A2S/A4S Packing Bag Number: 58220022; 2. Recommend to use module with more than 5% load, if not, the ripple of the product may exceeds the specification, but does not affect the reliability of the product; 3. The recommended unbalance degree of the dual output module load is 5%; if the degree exceeds 5%, than the product performance cannot be guaranteed to comply with all parameters in the datasheet. Please contact our technicians directly for specific information; 4. The maximum capacitive load offered were tested at nominal input voltage and full load; 5. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25, humidity<75% with nominal input voltage and rated output load; 6. All index testing methods in this datasheet are based on our Company's corporate standards; 7. The performance parameters of the product models listed in this manual are as above, but some parameters of non-standard model products may exceed the requirements mentioned above. Please contact our technicians directly for specific information; 8. We can provide product customization service; 9. Specifications are subject to change without prior notice. Mornsun Guangzhou Science & Technology Co., Ltd. Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China Tel: 86-20-38601850-8801 Fax: 86-20-38601272 E-mail: info@mornsun.cn 2015.08.11-B/1 Page 9 of 9 MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation