Crane Aerospace & Electronics Power Solutions
MFLHP Single and Dual DC/DC Converters
28 VOLT INPUT – 100 WATT
OPERATING CONDITIONS AND CHARACTERISTICS
Input Voltage Range
SYNC IN AND INHIBIT (INH1, INH2)
Sync In (525 to 675 kHz)
• 19 to 40 VDC continuous
• 80 V for 50 msec transient
Output Power
• Duty cycle 40% min, 60% max
• Logic low 0.8 V max
• Logic high 4.5 V min
• 80 to 100 watts depending on model
Lead Soldering Temperature (10 sec per pin)
• 300°C
• Referenced to input common
Sync Out - Referenced to input common
Storage Temperature Range (Case)
• -65°C to +150°C
Power Dissipation (Pd) Max
• 20 watts
Case Operating Temperature (Tc)
• -55 to +100°C full power
• -55 to +135°C absolute
Derating Output Power/Current
• Linearly from 100% at 100°C to 0% at 135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical
Inhibit (INH1, INH2) TTL Open Collector
• Logic low (output disabled)
Current –10 to –5 mA
INH1 referenced to input common
Logic low 0.8 V max
INH2 referenced to output common
Logic low 0.5 V max
• Logic high (output enabled)
Open collector
Input to Output Capacitance
• 150 pF typical
Current Limit
• 115% of full load typical
Isolation
• 100 megohm minimum at 500 VDC
Audio Rejection
• 50 dB typical
Conversion Frequency
• Free run mode 600 kHz typical
550 kHz min, 650 kHz. max
• External sync range 525 to 675 kHz
Inhibit Pin Voltage (unit enabled)
• INH1 = 9 to12 V, INH2 = 6 to 9 V
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.
Weight (maximum)
100 grams
Screening
Standard or ES. See “100°C Non-QML Products—MIL-PRF-38534 Environmental Screening” for more information.
Page 2 of 11
www.craneae.com
Rev D - 20070703
CRANE [ Crane Aerospace & Electronics. ]
