UCQ-3.3/30-D48N-C Murata Power Solutions Inc, UCQ-3.3/30-D48N-C Datasheet - Page 11

• Manufacturer Part Number: UCQ-3.3/30-D48N-C
• Description: DC/DC Converters & Regulators 48V 3.3Vout 30A 99W Negative polarity
• Manufacturer: Murata Power Solutions Inc
• Series: UCQr

Specifications of UCQ-3.3/30-D48N-C

• Output Power: 99 W
• Input Voltage Range: 36 V to 75 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 30 A
• Isolation Voltage: 2.25 KV
• Package / Case Size: Quarter Brick
• Product: Isolated
• Dc / Dc Converter O/p Type: Quarter-Brick
• No. Of Outputs: 1
• Input Voltage: 36V To 75V
• Power Rating: 99W
• Output Voltage: 3.3V
• Output Current: 30A
• Approval Bodies: EN / IEC / UL
• Supply Voltage: 48V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(1) All models are tested and specifi ed with external 1||10 μF ceramic/tantalum output capacitors no external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate
(2) Input Ripple Current is tested and specifi ed over a 5 Hz to 20 MHz bandwidth. Input fi ltering is C
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher temperatures and/or lower airfl ow, the DC/DC converter will tolerate brief full current outputs if the
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fi xed conditions, Tpcboard = +25 deg.C, full output load, natural air convection.
(5) The On/Off Control is normally controlled by a switch or open collector or open drain transistor. But it may also be driven with external logic or by applying appropriate external voltages which are referenced to
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.
(7) The outputs are not intended to sink appreciable reverse current.
(8) Output noise may be further reduced by adding an external fi lter. See I/O Filtering and Noise Reduction.
(9) All models are fully operational and meet published specifi cations, including “cold start” at –40 C.
(10) Regulation specifi cations describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme.
(11) Output accuracy is dependent on user-supplied trim resistors. To achieve high accuracy, use ±1% or better tolerance metal-fi lm resistors mounted close to the converter.
(12) Output current limit and short circuit protection is non-latching. When the overcurrent fault is removed, the converter will immediately recover.
(13) Do not exceed maximum power specifi cations when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which exceed the ripple specifi cation. The output may be operated indefi nitely with no load.
(15) Input Fusing: To ensure reverse input protection with full output load, always connect an external input fast-blow fuse in series with the +V
(16) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output. If the overcurrent condition still exists, the restart current will be removed and then tried again. This
(17) Normally, the Sense lines are connected at the remote load to compensate for IR voltage drops in the power wiring and to improve dynamic response. If Sense is not used, each Sense pin should be con-
Product Adaptations
Specifi cation Notes
our test equipment and may not be required to achieve specifi ed performance in your applications. All models are stable and regulate within spec under no-load conditions. All specifi cations are typical unless
noted. General conditions for Specifi cations are +25 deg.C, V
total RMS current over time does not exceed the Derating curve. All Derating curves are presented at sea level altitude. Be aware of reduced power dissipation with increasing altitude.
Input Common.
nominal input voltage.
short current pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers normal operation.
nected at the converter to its respective Vout pin.
IN
and V
OUT
= nominal, full load. Adequate airfl ow must be supplied for extended testing under power.
www.murata-ps.com
IN
= 33 μF, 100V tantalum, C
Single Output UCQ Models
BUS
= 220 μF, 100V electrolytic, L
IN
input. Use approximately twice the full input current rating with
21 Feb 2011 MDC_UCQ Models.B18
BUS
= 12 μH.
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