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| TDD25 SERIES DC - DC CONVERTER 23 ~ 25W SINGLE & DUAL OUTPUT FEATURES LOW COST 2:1 & 3:1 WIDE INPUT RANGE I/O ISOLATION INPUT Pi FILTER SHORT CIRCUIT PROTECTION HIGH PERFORMANCE 2 YEARS WARRANTY MODEL LIST MODEL NO. INPUT VOLTAGE 18~60 VDC 18~60 VDC 18~60 VDC 18~60 VDC 35~75 VDC 35~75 VDC 35~75 VDC 35~75 VDC OUTPUT OUTPUT WATTAGE VOLTAGE Single Output Models 23 WATTS 25 WATTS 24 WATTS 25 WATTS 23 WATTS 25 WATTS 24 WATTS 25 WATTS +3.3 VDC + 5 VDC + 12 VDC + 15 VDC +3.3 VDC + 5 VDC + 12 VDC + 15 VDC OUTPUT CURRENT 7000 mA 5000 mA 2000 mA 1700 mA 7000 mA 5000 mA 2000 mA 1700 mA EFF. (min.) 78% 84% 84% 84% 78% 84% 84% 84% TDD25 - 03S2 TDD25 - 05S2 TDD25 - 12S2 TDD25 - 15S2 TDD25 - 03S3 TDD25 - 05S3 TDD25 - 12S3 TDD25 - 15S3 Dual Output Models TDD25 - 12D2 TDD25 - 15D2 TDD25 - 12D3 TDD25 - 15D3 18~60 VDC 18~60 VDC 35~75 VDC 35~75 VDC 25 WATTS 25 WATTS 25 WATTS 25 WATTS 12 VDC 15 VDC 12 VDC 15 VDC 1000 mA 850 mA 1000 mA 850 mA 84% 84% 84% 84% www.chinfa.com 2007.08.30 sales@chinfa.com TDD25 SERIES SINGLE & DUAL OUTPUT CIRCUIT SCHEMATIC Block diagram for TDD25 series with single output Vi + Switching Device Vi Opto Isolation Reference & Error Amp. Rectifier Vo + Vo - PWM Controller ON / OFF Trim Block diagram for TDD25 series with dual output Vi + Rectifier Switching Device Rectifier Vi PWM Controller Opto Isolation Reference & Error Amp. Vo + com Vo - ON / OFF Trim www.chinfa.com 2007.08.30 sales@chinfa.com TDD25 SERIES SINGLE & DUAL OUTPUT SPECIFICATION All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed o GENERAL Characteristics Switching frequency Isolation voltage Isolation resistance Ambient temperature Case temperature Derating Storage temperature Dimension Cooling Case material Conditions Vi nom, Io nom Input / Output Input / Output, @ 500VDC 3.3V & 5V model 12V, 15V & dual output model Operating at Vi nom, Io nom Vi nom Non operational L50.8 x W76.2 x H12 Free air convection Metal min. 1,500 100 -25 -25 typ. 200 max. unit KHz VDC M + 60 + 71 + 100 o o o o C C C See derating curve -40 + 100 %/ C C mm o INPUT SPECIFICATIONS Characteristics Input voltage range No load input current Input voltage w/o damage Startup voltage Input filter Conditions Ta min ... T max, a Io nom Vi = nom Io nom Io nom Pi type 3:1 models 2:1 models 24V models 48V models 24V models 48V models 24V models 48V models min. 18 35 typ. 24 48 48 15 10 max. 60 75 unit VDC VDC mA mA 65 80 16 30 VDC VDC VDC VDC OUTPUT SPECIFICATIONS Characteristics Output voltage accuracy Minimum load Line regulation Load regulation Transient recovery time Temperature coefficient Ripple & noise Vi nom Conditions Vi nom, Io nom single output models dual output models (each output) min. 0 10 typ. max. 2 unit % % % Io nom, Vi min ...Vi max Vi nom, Io 0 ... Io nom, single output models Vi nom, Io min ... Io nom, dual output models 1 2 5 500 0.02 % % % S %/C mV mV mV % % o 25% load, step changed Vi nom, Io nom Vi nom, Io nom, BW = 20MHz 3.3V & 5V models 12V & 12V 150 240 300 Voltage trim range Efficiency Vi nom 15V & 15V 3.3V output models 5V, 12V, 15V & dual 5 10 Up to 84%, See model list Vi nom, Io nom, Po / Pi www.chinfa.com 2007.08.30 sales@chinfa.com TDD25 SERIES SINGLE & DUAL OUTPUT SPECIFICATION All Specifications Typical At Nominal Line, Full Load, 25 C Unless Otherwise Noticed o CONTROL AND PROTECTION Remote ON / OFF Input reversed Output short circuit ON: opened or 8 ~ 10VDC applied, reference to input GND OFF: -0.3 ~ 2VDC applied, reference to input GND Shunt diode built in, external fuse recommended Continuous MECHANISM & PIN CONFIGURATION mm [inch] 76.20 [3.00] 6.35 [0.25] 63.50 [2.50] 5.08 [0.20] 10.16 [0.40] 15.24 [0.60] 6 2 7 12.00 [0.47] 5.00 [0.20] DIA 1.00 [0.04] 10.16 [0.40] 10.16 [0.40] 3 20.32 [0.80] 5.08 [0.20] 8 10.16 [0.40] 9 10.16 [0.40] 5 BURL AT 4 CORNER BOTTOM VIEW 10 PHYSICAL CHARACTERISTICS CASE SIZE CASE MATERIAL WEIGHT 50.8 x 76.2 x 12 mm 2 x 3 x 0.47 inches Metal 105 g PIN ASSIGNMENT GENERAL PIN NO. SINGLE DUAL 2 Vi Vi 3 Vi+ Vi+ 5 ON / OFF ON / OFF 6 N. C. Vo 7 N. C. N. C. 8 Vo com 9 Vo + Vo + 10 Trim Trim DERATING 100 Power out [ % ] 12V, 15V & dual NATURAL CONVECTION COOLING 3.3V & 5V 0 -25 www.chinfa.com 2007.08.30 60 Ambient Temperature [ oC ] 71 100 sales@chinfa.com |
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