Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC/DC Converters
28 VOLT INPUT – 65 WATT
OPERATING CONDITIONS AND CHARACTERISTICS
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for 120 msec transient
Output Power
• 50 to 65 watts depending on model
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +150°C
Power Dissipation (Pd)
• 14 watts (16 watts MFL2805S, MFL2805D)
Case Operating Temperature (Tc)
• –55°C to +125°C full power
• –55°C to +135°C absolute
Derate Output Power/Current
• Linearly from 100% at 125°C to 0% at 135°C
• MFL283R3S: linearly from 100% at 100°C to
80% at 125°C and to 0% at 135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Input to Output Capacitance
• 150 pF, typical
Current Limit
• 125% of full load typical
Isolation
• 100 megohm minimum at 500 V
Audio Rejection
• 50 dB typical
Conversion Frequency (-55°C to 125°C)
• Free run mode 600 kHz typical
525 kHz. min, 675 kHz max
Inhibit Pin Voltage (unit enabled)
• INH1 = 9 to12 V, INH2 = 6 to 9 V
SYNC AND INHIBIT (INH1, INH2)
Sync In (525 to 675 kHz)
• Duty cycle 40% min, 60% max
• Logic low 0.8 V max
• Logic high 4.5 V min, 5 V max
• Referenced to input common
Sync Out
• Referenced to input common
Inhibit (INH1, INH2) TTL Open Collector
• Logic low (output disabled)
INH1 referenced to input common
Logic low 0.8 V max
Inhibit pin current 10 mA max
INH2 referenced to output common
Logic low 0.5 V max
Inhibit pin current 5 mA max
• Logic high (output enabled)
Open collector
MECHANICAL AND ENVIRONMENTAL
Size (maximum)
3.005 x 1.505 x 0.400 inches (76.33 x 38.23 x 10.16 mm)
See case U for dimensions.
Case options V, W, Y and Z are available by special order.
Weight (maximum)
86 grams
Screening
Standard, ES, or /883 (Class H, QML). See “883, Class H, QML Products – Element Evaluation” and “883, Class H, QML Products – Environmental
Screening” for more information.
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Rev D - 20060601
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