YF SERIES
TO 20 WATTS
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.
Ripple/Noise (20MHz BW) .................. 75mV P-P
SPECIFICATIONS: YF SERIES
All specifications apply @ +25 C ambient unless otherwise
noted.
Transient Response<500msec to within 1ꢀ Vout
INPUT SPECIFICATIONS
GENERAL 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
Efficiency..............................................83ꢀ typical
Isolation Voltage (input to output) ..1600VDC min.
Isolation Resistance (input to output) ......1000MW
Switching Frequency ......................300kHz typical
OUTPUT SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
Output Current...................................................see table
Output Voltage Tolerance.......................................... 2ꢀ
Output Trim (external).............................................. 10ꢀ
Line Regulation: full line......................................... 0.5ꢀ
Operating Temperature (case) ........-25 to +105°C
Storage Temperature ......................-55 to +125°C
Humidity (non-condensing)..............20 - 95ꢀ R.H.
PHYSICAL SPECIFICATIONS
Line Regulation: 20 Watt 4:1
Input........................................................................... 1ꢀ
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
Load Regulation
Singles (25-100ꢀ load).......................... 0.5ꢀ
(NL-100ꢀ load) ........................................ 1ꢀ
Duals (50-100ꢀ load) .............................. 1ꢀ
(NL-100ꢀ load) ........................................ 5ꢀ
Due to advances in technology, specifications subject to change without
notice.
Short Circuit Protection....................................continuous
1
603 778 2300
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