Datasheet

UCH-5/10-D48 UCH-5/20-D24 UCH-5/30-D48 UCH-12/4.2-D48 UCH-12/12.5-D48 UCH-15/6.7-D48
Isolation Voltage
Input to Output, Volts min. 2250
Input to baseplate, Volts min. 1500
Baseplate to output, Volts min. 1500
Isolation resistance, MΩ 100
Isolation capacitance, pF 1000
Isolation safety rating Basic insulation
Miscellaneous
Current limit inception (98% of VOUT,
after warmup), Amps
13 26 35 5.4 14.5 7.4
Short circuit protection method Current limiting, hiccup autorestart. Remove overload for recovery.
Short circuit current, Amps 5
Short circuit duration Output may be shorted continuously to ground (no damage).
Overvoltage protection, Volts
(via magnetic feedback)
7.75 max. 7.5 max. 7.5 18 max. 16.8 max. 17.5
Prebiased Startup Starts if external voltage is less than VNOM.
Dynamic characteristics
Dynamic load response
(50-75-50% load step)
200 µSec to ±1%
of fi nal value
200 µSec to ±1%
of fi nal value
200 µSec to ±1%
of fi nal value
250 µSec to ±1%
of fi nal value
250 µSec to ±1%
of fi nal value
250 µSec to ±1%
of fi nal value
Start-up time
VIN to VOUT regulated, mSec 10 max.
Remote On/Off to VOUT
regulated, mSec
10 max.
Switching frequency, KHz 300 ± 30 330 ± 40 300 ± 30 335 ± 35 335 ± 35 350 ± 40
Environmental
Calculated MTBF 1.6M hours TBD 1.9M hours 1.6M hours TBD
Operating ambient temperature
range, °C (with derating)
−40 to +85 (See Derating Curves)
Operating PC board
temperature, °C
−40 to +110
Storage temperature range, °C −55 to +125
Thermal protection/shutdown, °C +120 +115
Relative humidity To +85°C/85%, non-condensing
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Single Output UCH Models
Isolated, “Half-Brick”
1.8−15V Output DC/DC Converters
MDC_UCH Models.C01 Page 6 of 18