HPH Series

www.murata-ps.com

MDC_HPH_A12 Page 4 of 12

DYNAMIC CHARACTERISTICS

Dynamic Load Response, μSec to ±1% final value, (50-75-50%, load step)

HPH-3.3/70-D48

150μS

HPH-5/40-D48, HPH-12/30-D48

200μS

HPH-3.3/70-D48, HPH-5/40-D48

50 mS max.

HPH-12/30-D48

15 mS max.

HPH-3.3/70-D48, HPH-5/40-D48

50 mS max.

HPH-12/30-D48

15 mS max.

Switching Frequency

HPH-3.3/70-D48

450 KHz

HPH-5/40-D48

440 KHz

HPH-12/30-D48

440 KHz

Calculated MTBF

1.2 M hours (HPH-12/30-D48)

Operating Temperature Range

-40 to +85ºC, see derating curves

Storage Temperature Range

-55 to +125ºC

Thermal Protection/Shutdown

120ºC

Relative Humidity

To +85ºC/85%, non condensing

Pre-biased Startup

PHYSICAL CHARACTERISTICS

Outline Dimensions

See mechanical specs

Baseplate Material

Aluminum

Pin Material

Copper alloy

Pin Diameter

0.04/0.08" (1.016/2.032mm)

Pin Finish

Nickel underplate with gold overplate

Weight

HPH-12/30-D48: 2.25 ounces (63.8g)

All other models: 2 ounces (56.7g)

Electromagnetic Interference (conducted and radiated) (may require external filter)

Designed to meet FCC part 15, class B, EN55022

Safety

Designed to meet UL/cUL 60950-1,

CSA-C22.2 No.60950-1, IEC/EN 60950-1

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Volts, Min.

-0.3V

Volts, Max. Continuous

75V (100V/100mS, HPH-12/30-D48)

Volts, Min.

-0.3V

Volts, Max.

50V

Input Reverse Polarity Protection

See fuse section

Output Overvoltage, Max.

Storage Temperature

Min.

-55ºC

Max.

125ºC

[1] All specifications are typical unless noted. Ambient temperature = +25 degrees Celsius, Vin is

nominal (+48 Volts), output current is maximum rated nominal. Output capacitance is 1 μF ceramic

paralleled with 10 μF electrolytic. Input caps are 22 μF except HPH-3.3/70-D48 which is 100 μF input.

All caps are low ESR. These capacitors are necessary for our test equipment and may not be needed

in your application.

Testing must be kept short enough that the converter does not appreciably heat up during testing. For

extended testing, use plenty of airflow. See Derating Curves for temperature performance. All models

are stable and regulate within spec without external cacacitance.

[2] Input Ripple Current is tested and specified over a 5-20 MHz bandwidth and uses a special set of

external filters only for the Ripple Current specifications. Input filtering is Cin = 33 μF, Cbus = 220 μF,

Lbus = 12 μH except HPH-3.3/70-D48 is Cin = 100μF. Use capacitor rated voltages which are twice

the maximum expected voltage. Capacitors must accept high speed AC switching currents.

[3] Note that Maximum Current Derating Curves indicate an average current at nominal input voltage.

At higher temperatures and/or lower airflow, the converter will tolerate brief full current outputs if the

total RMS current over time does not exceed the Derating curve.

[4] Mean Time Before Failure (MTBF) 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 output may be shorted to ground indefinitely with no damage.

6] The On/Off Control is normally driven from a switch or relay. An open collector/open drain transistor

may be used in saturation and cut-off (pinch-off) modes. External logic may also be used if voltage

levels are fully compliant to the specifications.

[7] Regulation specifications describe the deviation as the input line voltage or output load current is

varied from a nominal midpoint value to either extreme.

[8] Do not exceed maximum power ratings, Sense limits or output overvoltage when adjusting output

trim values.

[9] At zero output current, Vout may contain components which slightly exceed the ripple and noise

specifications.

[10] Output overload protection is non-latching. When the output overload is removed, the output will

automatically recover.

[11] Because of the high currents, wire the appropriate input, output and common pins in parallel

groups. Be sure to use adequate PC board etch. If not sufficient, install additional discrete wiring. If

wiring is not sufficient, the Sense feedback may attempt to drive the outputs beyond ratings.

[12] The converter will shut off if the input falls below the undervoltage threshold. It will not restart

until the input exceeds the Input Start Up Voltage.

[13] Please refer to the separate output capacitive load application note from Murata Power Solutions.

[14] Output noise may be further reduced by installing an external filter. See the Application Notes.

[15] To avoid damage or unplanned shutdown, avoid sinking reverse output current.

[16] To protect against accidental input voltage polarity reversal, install a fuse in series with +Vin. See

Fusing information.