Crane Aerospace & Electronics Power Solutions
SMTR Single, Dual and Triple DC/DC Converters
28 VOlT INPuT – 30 WaTT – PENDINg REVISION F RElEaSE
OPERaTINg CONDITIONS aND ChaRaCTERISTICS
Input Voltage Range
• 16 to 40 VDC continuous
• 50 V for 50 msec transient
audio Rejection
• 40 dB typ (50 dB typ, triple output)
Output Power
• Up to 30 watts depending on model
Conversion Frequency
• Free run 550 min, 600 typ, 650 max kHz
• External sync 500 to 675 kHz
lead Soldering Temperature (10 sec per pin)
• 300°C
Storage Temperature Range (Case)
• -65°C to +135°C
Case Operating Temperature (Tc)
• -55°C to +125°C full power
• -55°C to +135°C absolute
SyNC aND INhIbIT
Derating Output Power/Current
• Linearly from 100% at 125°C to 0% at 135°C
Output Voltage Temperature Coefficient
• 100 ppm/°C typical single and dual outputs
• 200 ppm/°C main, 300 ppm/°C aux triple output
Input to Output Capacitance
• 50 pF typ (100 pF typ triple outputs)
Current limit
• 125% of full load typical
Sync
• Input frequency 500 to 675 kHz
• Duty cycle 40% min, 60% max
• Active low 0.8 V max
• Active high 4.5 V min, 5 V max
• Referenced to input common
• If not used, connect to input common
Inhibit
• Active low (output disabled)
‣
oltage ≤0.8 V
V
‣
Inhibit pin source current 8.0 mA max
‣
Referenced to input common
• Active high (output enabled)
‣
Open collector or unconnected
‣
If not used, leave unconnected
‣
Inhibit pin voltage, 9 to 11 V
Isolation
• 100 megohm minimum at 500 VDC
• Any pin to case, except case pin
MEChaNICal aND ENVIRONMENTal
Size (maximum)
• Single and dual output
‣
non-flanged: 2.125 x 1.115 x 0.400 inches
(53.98 x 28.58 x 10.16 mm) See case H2 for dimensions.
‣
Flanged: 2.910 x 1.115 x 0.400 inches
(73.79 x 28.58 x 10.16 mm) See case K3 for dimensions.
• Triple output
‣
non-flanged: 1.950 x 1.350 x 0.405 inches
(49.53 x 34.29 x 10.29 mm) See case F1 for dimensions.
‣
Flanged: 2.720 x 1.350 x 0.405 inches
(69.09 x 34.29 x 10.29 mm) See case J1 for dimensions.
Screening
Space Prototype (O), Class H, or Class K are radiation tolerant
to Radiation Hardness Assurance (RHA) levels of “-” (O), “P”
or “R”, per MIL-STD-38534. Interpoint model numbers use an
“O” in the RHA designator position to indicate the “-” (dash)
Radiation hardness Assurance level of MIL-PRF- 38534, which
is defined as “no RHA”.
See “Class H and K, MIL-PRF-38534 Screening” tables for more
information, page 21. Available configurations are: OO, HP, KP,
HR, and KR
Weight (maximum)
• Single and dual non-flanged 50 grams, flanged 52 grams
• Triple non-flanged 58 grams, flanged 62 grams
www.interpoint.com
Page 3 of 21
Rev F - 20090324 - Pending Revision F Release
CRANE [ Crane Aerospace & Electronics. ]
