yf series to 20 watts www . wallindustries . com 1 603 778 2300 up to 20 watts - yf series ultra-wide input, low quiescent current features ? single and dual outputs ? industry standard package and pin-out ? pi input filter integral to converter ? 1600vdc i/o isolation ? regulated output ? continuous short circuit protection ? remote on/off feature ? ten year warranty the yf series from wall industries the yf series of single and dual output dc/dc converters performs over an ultra-wide input voltage range (2:1 & 4:1), providing indefinite short circuit and overvoltage protection. the series design technology allows 20 watts of output power from a 1.60 x 2.0 x 0.40 case. these current mode control forward converters are designed for improved tran- sient response and reduced stress on switching components and do not require external input filtering,making it a pre- ferred source over industry alternatives. specifica tions: yf series all specifications apply @ +25 c ambient unless otherwise noted. input specifications input voltages............18-36,36-75,9-36,20-75,18-75vdc nominal input..................................................24, 48vdc remote on/off control..........cmos or ttl (see note 7) input filter......................................................pi input filter output specifica tions output current...................................................see table output voltage tolerance..........................................2% output trim (external)..............................................10% line regulation: full line.........................................0.5% line regulation: 20 watt 4:1 input...........................................................................1% load regulation singles (25-100% load)..........................0.5% (nl-100% load) ........................................1% duals (50-100% load) ..............................1% (nl-100% load) ........................................5% short circuit protection....................................continuous ripple/noise (20mhz bw) .................. 75mv p-p transient response <500msec to within 1% vout general specifica tions efficiency ..............................................83% typical isolation voltage (input to output) ..1600vdc min. isolation resistance (input to output) ......1000mw switching frequency ......................300khz typical environmental specifications operating temperature (case) ........-25 to +105c storage temperature ......................-55 to +125c humidity (non-condensing) ..............20 - 95% r.h. physical specifica tions weight ............................................approx. 4.0 oz. dimensions ..................................1.6 x 2.0 x 0.40 case material ......................nickel coated copper, ......................................non-conductive baseplate shielding..................................................six-sided due to advances in technology, specifications subject to change without notice.
to 20 watts yf series 2 www . wallindustries . com 603 778 2300 input output output over model voltage voltage current voltage number (vdc) (vdc) (amps) protection (vdc) 9-18 3.3 4.0 3.9 yf12s33-4000 5 4.0 6.2 yf12s5-4000 12 1.67 15 yf12s12-1600 15 1.33 18 yf12s15-1330 12 0.83 15 yf12d12-830 18-36 3.3 4.0 3.9 yf24s33-4000 5 4.0 6.2 yf24s5-4000 12 1.67 15 yf24s12-1600 15 1.33 18 yf24s15-1330 12 0.83 15 yf24d12-830 15 0.66 18 yf24d15-660 15 0.66 18 yf12d15-660 36-75 3.3 4.0 3.9 yf48s33-4000 5 4.0 6.2 yf48s5-4000 12 1.67 15 yf48s12-1600 15 1.33 18 yf48s15-1330 9-36 5 3.0 6.2 yfw24s5-3000 12 1.25 15 yfw24s12-1250 15 1.0 18 yfw24s15-1000 5 1.50 6.2 yfw24d5-1500 12 0.62 15 yf24d12-625 15 0.50 18 yfw24d15-500 20-75 5 3.0 6.2 yfw48s5-3000 12 1.25 15 yfw48s12-1250 15 1.0 18 yfw48s15-1000 5 1.50 6.2 yfw48d5-1500 12 0.83 15 YF48D12-830 15 0.66 18 yf48d15-660 9-36 5 4.0 6.2 yfw24s5-4000 12 1.66 15 yfw24s12-1600 15 1.33 18 yfw24s15-1330 5 1.50 6.2 yfw24d5-1500 12 0.83 15 yfw24d12-830 15 0.66 18 yfw24d15-660 18-75 5 4.0 6.2 yfw48s5-4000 12 1.66 15 yfw48s12-1600 15 1.33 18 yfw48s15-1300 12 0.83 15 yfw48d12-830 15 0.66 18 yfw48d15-660 pin connections single dual 1+ vin + vin 2- vin - vin 3 remote remote 4 no pin + vout 5 + vout output common 6 - vout - vout 7 trim trim notes: 1. all case and pin to case dimensions reference only unless otherwise noted. 2. all dc/dc converters should be externally fused on the front end for protection. 3. p.c. pins - 0.04 dia. x 0.18 long (min); typical seven places 4. pin to pin tolerance 0.01. pin diameter tolerance 0.005 5. duals: 1/4 load to full load: (1% and no load to full load: 5%. 6. significant capacitive load on output may inhibit start-up and operation, consult factory. 7. on-control: 5.5v min. or open. off-control: 0.4v max. or short. control voltage referenced to -vin. 8. input pi-filter without external capacitor filter.
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