HPQ-3.3 Datasheet, PDF (5/10 Pages) Murata Manufacturing Co., Ltd. – Isolated High Power Quarter Brick DC/DC Converters

HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC/DC Converters
Absolute Maximum Ratings
Input Voltage
Continuous
Transient, 100 mS max.
Output Power
On/Off Control
Input Reverse Polarity Protection
Output Current
Storage Temperature
Lead Temperature
75 Volts max.
100 Volts max.
166.6 Watts max.
0V. min. to +15 V. max.
None. Install external fuse.
Current-limited.
Devices can withstand sustained short circuit without damage.
-55 to +125 °C
See soldering guidelines.
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied nor recommended.
Specification Notes
(1) All models are tested and specified with external 1||10 μF output capacitors and no external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equip-
ment and may not be required to achieve specified performance in your applications. All models are stable and regulate within spec under no-load conditions.
All specifications are typical unless noted. General conditions for Specifications are +25 °C, Vin=nominal, Vout=nominal, full load. Adequate airflow must be supplied for extended testing under power.
(2) Reflected Input Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=33 μF, 100V, Cbus=220 μF, 100V electrolytic, Lbus=12 μH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the
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 density altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed conditions, Tpcboard=+25 °C, full output load, natural air convection.
(5) The On/Off Control is normally controlled by a switch, relay 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 Input Common.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.
(7) The output is not intended to sink appreciable reverse current. This may damage the outputs.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering and Noise Reduction.
(9) All models are fully operational and meet published specifications, including “cold start” at –40 °C. Maximum power requires that the package temperature of all on-board components must never exceed
+128°C.
(10) Regulation specifications describe the deviation as the line input voltage or output load current is varied from a nominal midpoint value to either extreme.
(11) The converter is normally specified with the Input/Output filtering listed in Note 1. Higher capacitive load will reduce noise but at the expense of delayed settling time, extended turn-on time and slower tran-
sient response. Use only as much output filtering as needed and no more. Thoroughly test your system under full load with all components installed. Low ESR capacitors with high capacitance may degrade
dynamic performance.
(12) “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 short current repeating pulse prevents overheating and damaging the converter. Output current limit and short circuit protection is non-latching. Once the fault is removed, the converter immediately
recovers normal operation.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which exceed the ripple specification. The output may be operated indefinitely with no load.
(15) Input Fusing: To ensure reverse input protection, always connect an external input fast-blow fuse in series with the +Vin input.
(16) Output accuracy is dependent on user-supplied trim resistors. To achieve high accuracy, use ±1% or better tolerance metal-film resistors.
(17.) Always connect the sense pins. If they are not connected to a remote load, wire each sense pin to its respective voltage output at the converter pins.
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifica-
tions may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
For Sn/Pb based solders:
Maximum Preheat Temperature 115° C. Maximum Preheat Temperature 105° C.
Maximum Pot Temperature
270° C. Maximum Pot Temperature
250° C.
Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds
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21 Feb 2011 MDC_HPQ-3.3/50-D48 Series.A13 Page 5 of 10