WDD20 SERIES DC - DC CONVERTER 15 ~ 20W SINGLE & DUAL OUTPUT FEATURES O/n o ff ‧EFFICIENCY UP TO 89% ‧2:1 WIDE INPUT RANGE ‧I/O ISOLATION ‧INPUT Pi FILTER ‧SHORT CIRCUIT PROTECTION ‧HIGH PERFORMANCE ‧2 YEARS WARRANTY MODEL LIST INPUT EFF. CAPACITOR INPUT CURRENT OUTPUT OUTPUT OUTPUT EFF. LOAD MODEL NO. VOLTAGE WATTAGE VOLTAGE CURRENT (min.) (typ.) (max.) (typ.) Single Output Models +3.3 VDC 4500 mA 77% 80% 7000 μF 20 WATTS + 5 VDC 4000 mA 81% 83% 7000 μF 20 WATTS + 12 VDC 1670 mA 84% 86% 1000 μF 1.95 A 20 WATTS + 15 VDC 1330 mA 85% 87% 470 μF 18~36 VDC 0.78 A 15 WATTS +3.3 VDC 4500 mA 78% 80% 7000 μF WDD20 - 05S2 18~36 VDC 1.0 A 20 WATTS + 5 VDC 4000 mA 83% 85% 7000 μF WDD20 - 12S2 18~36 VDC 1.0 A 20 WATTS + 12 VDC 1670 mA 84% 86% 1000 μF WDD20 - 15S2 18~36 VDC 0.96 A 20 WATTS + 15 VDC 1330 mA 86% 88% 470 μF WDD20 - 03S3 36~72 VDC 0.39 A 15 WATTS +3.3 VDC 4500 mA 78% 80% 7000 μF WDD20 - 05S3 36~72 VDC 0.5 A 20 WATTS + 5 VDC 4000 mA 83% 85% 7000 μF WDD20 - 12S3 36~72 VDC 0.49 A 20 WATTS + 12 VDC 1670 mA 85% 87% 1000 μF WDD20 - 15S3 36~72 VDC 0.48 A 20 WATTS + 15 VDC 1330 mA 86% 88% 470 μF ± 830 mA 83% 85% ± 470 μF 87% ± 470 μF WDD20 - 03S1 9~18 VDC 1.6 A 15 WATTS WDD20 - 05S1 9~18 VDC 2.0 A WDD20 - 12S1 9~18 VDC 2.0 A WDD20 - 15S1 9~18 VDC WDD20 - 03S2 Dual Output Models WDD20 - 12D1 9~18 VDC 2.0 A 20 WATTS WDD20 - 15D1 9~18 VDC 1.95 A 20 WATTS ± 15 VDC ± 670 mA 85% WDD20 - 12D2 18~36 VDC 0.97 A 20 WATTS ± 12 VDC ± 830 mA 85% 87% ± 470 μF WDD20 - 15D2 18~36 VDC 0.96 A 20 WATTS ± 15 VDC ± 670 mA 86% 88% ± 470 μF WDD20 - 12D3 36~72 VDC 0.48 A 20 WATTS ± 12 VDC ± 830 mA 85% 87% ± 470 μF WDD20 - 15D3 36~72 VDC 0.48 A 20 WATTS ± 15 VDC ± 670 mA 87% 89% ± 470 μF ± 12 VDC SPECIFICATION o All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed GENERAL Characteristics Conditions Switching frequency Isolation voltage Vi nom, Io nom Input - Output Isolation resistance Isolation capacitance Input - Output, @ 500VDC www.chinfa.com 2010.02.09 100KHz / 1V min. typ. max. 180 unit KHz 1500 VDC MΩ 100 1000 PF [email protected] P1 WDD20 SERIES SINGLE & DUAL OUTPUT SPECIFICATION o All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed GENERAL Characteristics Ambient temperature Conditions Vi nom, Io nom -25 12V, 15V & dual output models -25 Case temperature Operating at Vi nom, Io nom Derating Vi nom Non operational Vi nom, Io nom Storage temperature Relative humidity Temperature coefficient typ. min. 3.3V & 5V output models + 61 + 71 unit o C o C +100 o -40 +100 o 20 95 C See derating curve Vi nom, Io min ± 0.02 L50.8 x W40.64 x H10.16 Dimension Be1lcore issue 6@40 oC, GB MTBF Cooling max. C % RH % / oC mm Hours 950000 Free air convection INPUT SPECIFICATIONS Characteristics Input voltage range Input voltage w/o damage Vi nom, Io=0 Io nom typ. 9 unit 18 VDC 18 12 24 36 VDC 36 48 72 VDC 12V models 20 mA 24V models 15 mA 48V models 10 mA 12V models 20 VDC 24V models 40 75 VDC Ta min ...Ta max, Io nom No load input current min. max. Conditions 48V models Startup voltage Io nom VDC 12V models 8.5 VDC 24V models 16 VDC 48V models 33 VDC Pi type Input filter OUTPUT SPECIFICATIONS Characteristics Conditions Output voltage accuracy Vi nom, Io nom Minimum load Vi nom single output models dual output models (each output) Line regulation min. typ. max. unit ±2 % 0 % 10 % Io nom, Vi min ...Vi max Vi nom, Io 0 ... Io nom, single output models Load regulation Vi nom, Io min ... Io nom, dual output models Cross regulation (Dual model) Aymmetrical load 10% - 100% FL Startup time Transient recovery time Vi nom, Io nom Ripple & noise Voltage trim range 1) Vi nom, 1~0.5 Io nom Vi nom, Io nom, BW = 20MHz Vi nom % ±2 ±5 % ±5 30 % ms % 500 μs 3.3V & 5V models 100 mV 12V, 15V & dual 3.3V model 150 mV 5V, 12V, 15V & dual Efficiency ±1 Vi nom, Io nom, Po / Pi ± 5 % % ±10 Up to 89%, See model list and efficiency curve NOTE 1 : Pls refer to Fig 1 & Table 1 for connection and resistance recommended. CONTROL AND PROTECTION Remote ON / OFF ON : opened or 8 ~ 10VDC applied, reference to input GND OFF : -0.3 ~ 2VDC applied, reference to input GND Input reversed Shunt diode built in, external fuse recommended (12Vin : 3A, 24Vin : 1.5A, 48Vin : 1A) Output short circuit Current limited (Auto-recovery) Rated over load protection 110%min....140%max www.chinfa.com 2010.02.09 [email protected] P2 WDD20 SERIES SINGLE & DUAL OUTPUT PHYSICAL CHARACTERISTICS Case size 50.8 x 40.64 x 10.16 mm (2 x 1.6 x 0.4 inches) Case material Plastic base / Metal case Weight 60 g Patting material Epoxy MECHANISM & PIN CONFIGURATION mm [inch] 2.54 [0.10] 45.72 [1.80] 5.08 [0.20] 5 10.16 [0.4] 6.00 [0.24] 30.00[1.18] - 120.00[4.72] ±0.50[0.02] 7 10.16 [0.40] 4 GENERAL TOLERANCE ±0.30[0.01] 10.16 [0.40] 2 10.16 [0.40] DIA 1.00 [0.04] 0.00[0.00] - 30.00[1.18] 6 1 5.08 [0.20] 40.64 [1.60] 10.16 [0.40] 17.78 [0.70] 8 50.80 [2.00] BOTTOM VIEW PIN ASSIGNMENT GENERAL PIN NO. 1 2 4 5 6 7 8 SINGLE Vi+ Vi - ON / OFF NO PIN Vo + Vo - Trim DUAL Vi+ Vi - ON / OFF Vo + com Vo - Trim CIRCUIT SCHEMATIC ‧Block diagram for WDD20 series with dual output ‧Block diagram for WDD20 series with single output Vo + Vi + Vo + Vi + Rectifier Switching Device com Switching Device Rectifier Rectifier Vo - Vi PWM Controller Opto Isolation Reference & Error Amp. PWM Controller Trim ON / OFF Vo - Vi - Opto Isolation Reference & Error Amp. Trim ON / OFF RECOMMENDED CIRCUIT ‧Recommended filter for EN55022 Class B compliance ‧Recommended EN 55022 Class B filter circuit layout. L1 + Vin + C1 C2 Vo + WDD20 Vin - Vo - C3 ‧The commponents used in the above figure, together with the manufacturer part numbers for these components, are as follows. C1 C2 C3 L1 WDD20-XXX1 3.3μF / 50V MLCC 3.3μF / 50V MLCC InF / 2KV MLCC 1.5mH Common Choke WDD20-XXX2 1μF / 50V MLCC 1μF / 50V MLCC InF / 2KV MLCC 1.5mH Common Choke InF / 2KV MLCC 3.5mH Common Choke WDD20-XXX3 www.chinfa.com 2010.02.09 3.3μF / 100V 3.3μF / 100V MLCC MLCC [email protected] P3 WDD20 SERIES SINGLE & DUAL OUTPUT DERATING AND EFFICIENCY CURVE Temperature derating curve 100 Power out [ % ] 12V, 15V & dual NATURAL CONVECTION COOLING 0 -25 3.3V & 5V 61 71 Ambient Temperature [ oC ] 100 88 90 87 85 Efficiency [ % ] Efficiency [ % ] Efficiency Vs Input Voltage WDD20-05S2 86 85 84 20 22 24 26 28 30 32 34 80 75 70 65 Io : Full Load 83 18 Efficiency Vs Output Load WDD20-05S2 Vi : 24VDC 60 36 10 20 30 40 Input Voltage (V) 50 60 70 80 90 100 Output Load (%) Fig. 1 Trim connection ( For Single output ) 6 7 8 ( For Dual output ) Vo + Rext 1 Vo - Trim 6 7 8 Vo + Vo Rext 2 5 Vo + 5 Vo + 6 com 6 com 7 Vo - 7 Vo - 8 Trim 8 Trim Rext 1 Rext 2 Trim Table 1 Typical resistor values for various output voltage adjustment settings Type WDD20-03SX Type Rext 1 Vo nom -2.5% 1KΩ Vo nom -5% Rext 2 Vo nom -5% 0Ω Vo nom +2.5% 10KΩ Vo nom +5% 4.7KΩ Vo nom -10% Vo nom +5% Vo nom +10% WDD20-05SX 4.7KΩ 100Ω 4.7KΩ 470Ω WDD20-12SX 30KΩ 20KΩ 10KΩ 2KΩ WDD20-15SX 150KΩ 56KΩ 15KΩ 3KΩ WDD20-12DX 120KΩ 56KΩ 12KΩ 2KΩ WDD20-15DX 180KΩ 75KΩ 10KΩ 1.2KΩ www.chinfa.com 2010.02.09 [email protected] P4