PAH-28 MURATA-PS | Alldatasheet
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PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 1 o f 21 www.murata-ps.com www.murata-ps.com/support For full details go to www.murata-ps.com/rohs For applications requiring improved electrical and thermal performance, consider Murata’s new PAH series “Half Brick” DC-DC power converters. These compact modules measure 2.3" X 2.4" X 0.5" (58 X 61 X 12.7mm) and offer the industry-standard Half Brick footprint. The PAH Series is ideal for power amplifi er applications, wireless networks, and telecom applications. The baseplate provides a means for conduction cooling in demanding thermal environ- ment conditions. The module provides a 28Vdc output at 12.5 Amps and accepts a wide input voltage range of 18-36 or 36-75 Vdc. The PAH topology offers high effi ciency (up to 93%), tight line and load regulation, low ripple/ noise, and a fast dynamic load response. A single- board, highly optimized thermal design contributes to the superior thermal performance. These half-bricks provide output trim, sense pins, and primary side on/off control. Standard fea- tures also include input under-voltage shutdown, output over-voltage protection, output short-circuit/ current limiting protection, and thermal shutdown. PRODUCT OVERVIEW Typical unit Typical topology is shown. Some models may vary slightly.
FEATURES
28Vout @ 12.5A (350W) Trimmable 16.8 Vout to 32.2 Vout @ 350W with Vin = 18-36V (D24) or 36-75V (D48) Industry Standard “Half Brick” package High Effi ciency: up to 93% Outstanding thermal performance Standard baseplate for conduction cooled a pplications No output reverse conduction Input to Output Isolation, 2250Vdc (Basic) Input under-voltage lockout On/Off Control (Positive or Negative Logic) Output over-voltage protection Thermal shutdown Output short circuit protection (hiccup technique) Certifi ed to UL/EN 60950-1, CSA-C22.2 No. 60950-1, 2nd edition safety approvals Figure 1. Simplifi ed Schematic
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 2 of 21 www.murata-ps.com/support PART NUMBER STRUCTURE* PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Root Model ➀ Output Input Efficiency Dimensions (inches) VOUT (Volts) IOUT (Amps, Max.) Power R/N (mV pk-pk) Regulation (Max.) VIN Nom. (Volts) Range (Volts) IIN, no load (mA) IIN, full load (Amps)(Watts) Typ. Max. Line Load Min. ➃ Typ. Nominal Output Voltage 28PAH 12.5- / D48 Maximum Output Current in Amps Power Amplifi er Half-Brick - N Bx Input Voltage Range: D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal) - C RoHS Hazardous Materials compliance C = RoHS-6 (no lead), standard, does not claim EU exemption 7b – lead in solder On/Off Control Logic N = Negative logic P = Positive logic ➀ Please refer to the part number structure for additional ordering part numbers and options. ➁ All specifi cations are at nominal line voltage and full load, +25°C. unless otherwise noted. See detailed specifi cations. ➂ Full power continuous output requires baseplate installation. Please refer to the derating curves. ➃ Minimum effi ciency applies to all input voltages and working temperatures. H Conformal coating (optional) Blank = no coating, standard H = Coating added* Lx Pin length option Blank = standard pin length 0.180 in. (4.57 mm) Baseplate (installed on all models) B = Baseplate installed with standard M3-12.7 threaded rivet (typ. 4) B1 = Baseplate installed with unthreaded insert (see Mechanical section for details). *Minimum order quantity is required. Samples available with standard pin length only. Note: Some model number combinations may not be available. See website or contact your local Murata sales representative. *See www.murata.com for model-specific availability.
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 3 o f 21 www.murata-ps.com/support FUNCTIONAL SPECIFICATIONS, PAH-28/12.5-D24 ABSOLUTE MAXIMUM RATINGS Conditions Minimum Typical/Nominal Maximum Units Input Voltage, Continuous 0 36 Vdc Input Voltage, Transient 100 mS max. duration 50 Vdc Isolation Voltage Input to output 2250 Vdc On/Off Remote Control Power on, referred to -Vin 0 13.5 Vdc Output Power 0 357 W Output Current Current-limited, no damage, short-circuit protected 0 12.5 A Storage Temperature Range Vin = Zero (no power) -55 125 ˚C 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 Specifi cations Table is not implied nor recommended. INPUT Operating voltage range 18 24 36 Vdc Start-up threshold 14.5 16.5 Vdc Undervoltage shutdown 11.5 14 Vdc Internal Filter Type Pi Vdc External Input fuse 35 A Input current Full Load Conditions Vin = nominal 15.77 16.26 A Low Line input current Vin = minimum 22 A Inrush Transient Vin = 24V. 1 A2-Sec. Short Circuit input current 0.03 0.10 A No Load input current Iout = minimum, unit=ON 80 100 mA Shut-Down input currrent(Off, UV, OT) 51 5 m A Back Ripple Current 80 120 mA, pk-pk GENERAL and SAFETY Effi ciency Vin=24V, full load 91.5 92.5 % Isolation Isolation Voltage Input to output 2250 Vdc Input to Baseplate 1500 Vdc Output to Baseplate 1500 Vdc Insulation Safety Rating Basic Isolation Resistance 10 MΩ Isolation Capacitance 1500 pF Safety Certifi ed to UL-60950-1, CSA-C22.2 No.60950- 1, IEC/EN60950-1, 2nd edition (pending) Pending Calculated MTBF Per Telcordia SR-332, Issue 2, Method 1, Class 1, Ground Fixed, Tcase=+25°C 1200 Hours x 10 3 DYNAMIC CHARACTERISTICS Fixed Switching Frequency 300 KHz Turn On Time Startup Delay Vin On to 10% Vout or Remote On to 10% Vout 25 35 mS Rise Time 10% Vout to 90% Vout 28 35 mS Vout Rise Time From 0%~100% 28 35 mS Dynamic Load Response 50-75-50%, 1A/μs,within 1% of Vout 100 μSec Dynamic Load Peak Deviation same as above ±200 ±400 mV FEATURES and OPTIONS Remote On/Off Control “P” suffi x: Positive Logic, ON state ON = pin open or external voltage 3.5 13.5 V Positive Logic, OFF state OFF = ground pin or external voltage 0 1 V Control Current open collector/drain 1 2 mA “N” suffi x: Negative Logic, ON state ON = ground pin or external voltage -0.1 0.8 V Negative Logic, OFF state OFF = pin open or external voltage 2.5 13.5 V Control Current open collector/drain 1 2 mA Remote Sense Compliance Sense pins connected externally to respective Vout pins 2 % of Vout
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 4 o f 21 www.murata-ps.com/support OUTPUT Conditions Minimum Typical/Nominal Maximum Units Total Output Power 0 350 357 W Voltage Setting Accuracy At 100% load, no trim, all conditions 27.44 28 28.56 Vdc Output Adjust Range 16.8 32.2 Vdc Overvoltage Protection 34 34.6 37 Vdc Current Output Current Range 0 12.5 12.5 A Minimum Load No minimum load Current Limit Inception ➃ 98% of Vnom., cold 14 16 19 A Short Circuit Short Circuit Current Hiccup technique, autorecovery within ±1% of Vout 0.03 A Short Circuit Duration (remove short for recovery) Output shorted to ground, no damage Continuous Short circuit protection method Hiccup current limiting Non-latching Regulation ➄ Line Regulation Vin = 18-36, Vout = nom., full load ±0.125 % Load Regulation Iout = min. to max., Vin = nom. ±0.25 % Ripple and Noise 20 MHz BW, Cout = 1μF paralleled with 10μF 75 200 mV pk-pk Temperature Coeffi cient At all outputs 0.02 % of Vnom./°C Maximum Output Capacitance (Loads : CR mode) 470 3,300 μF (Loads : CC mode) 470 2,200 μF MECHANICAL Outline Dimensions with baseplate; see mechanical drawings 2.3 x 2.4 x 0.5 Inches 58.4 x 60.96 x 12.7 mm Weight 3.42 Ounces
97 Grams
Through Hole Pin Diameter Pins 1–4, 6–8/5,9 0.04/0.08 Inches 1.016/2.032 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 μ-inches Gold overplate 10.31 μ-inches ENVIRONMENTAL Operating Ambient Temperature Range with derating -40 85 ˚C Operating Baseplate Temperature -40 115 ˚C Storage Temperature Vin = Zero (no power) -55 125 ˚C Thermal Protection/Shutdown (with "B" Suffi x) 115 125 130 ˚C Electromagnetic Interference Conducted, EN55022/CISPR22 External fi lter required; see emissions performance test. B Class RoHS rating RoHS-6 FUNCTIONAL SPECIFICATIONS, PAH-28/12.5-D24 (CONT.)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 5 o f 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D24 Effi ciency and Power Dissipation VIN = 18V VIN = 24V Power Dissipation VIN = 24V VIN = 36V Efficiency (%) Dissipation (Watts) Iout (Amps)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 6 o f 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D24 Transverse Longitudinal Maximum Current Temperature Derating at sea level (Vin=18V, airfl ow from Vin to Vout, open frame) Maximum Current Temperature Derating at sea level (Vin=24V, airfl ow from Vin to Vout, open frame) Maximum Current Temperature Derating at sea level (Vin=36V, airfl ow from Vin to Vout, open frame) Maximum Current Temperature Derating at sea level (Vin=18V, airfl ow from Vin- to Vout+, open frame) Maximum Current Temperature Derating at sea level (Vin=24V, airfl ow from Vin- to Vout+, open frame) Maximum Current Temperature Derating at sea level (Vin=36V, airfl ow from Vin- to Vout+, open frame) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 7 o f 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D24 Transverse Longitudinal Maximum Current Temperature Derating at sea level (Vin=18V, airfl ow from Vin to Vout, with baseplate) Maximum Current Temperature Derating at sea level (Vin=24V, airfl ow from Vin to Vout, with baseplate) Maximum Current Temperature Derating at sea level (Vin=36V, airfl ow from Vin to Vout, with baseplate) Maximum Current Temperature Derating at sea level (Vin=18V, airfl ow from Vin- to Vout+, with baseplate) Maximum Current Temperature Derating at sea level (Vin=24V, airfl ow from Vin- to Vout+, with baseplate) Maximum Current Temperature Derating at sea level (Vin=36V, airfl ow from Vin- to Vout+, with baseplate) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) Output Current (Amps) Ambient Temperature (°C)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 8 o f 21 www.murata-ps.com/support FUNCTIONAL SPECIFICATIONS, PAH-28/12.5-D48 ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous Full power operation 0 80 Vdc Input Voltage, Transient Operating or non-operating, tested: 100 mS max. duration 0 100 Vdc Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin 0 15 Vdc Output Power 0 350 355.25 W Output Current Current-limited, no damage, short-circuit protected 0 12.5 A Storage Temperature Range Vin = Zero (no power) -55 125 ˚C 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 Specifi cations Table is not implied nor recommended. INPUT Operating voltage range 36 48 75 Vdc Recommended External Fuse Fast blow 20 A Turn On/Start-up threshold tested at 1/2 load Rising input voltage 33 34 35 Vdc Turn Off/Undervoltage lockout tested at 1/2 load Falling input voltage 31 32 33 Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions Vin = nominal 7.84 8.04 A Low Line Vin = minimum 10.57 10.84 A Inrush Transient 2.5 5 A 2-Sec. Output in Short Circuit 60 100 mA No Load Input Current Iout = minimum, unit=ON 80 100 mA Shut-Down Mode Input Current 51 0 m A Refl ected (back) ripple current ➁ Measured at input with specifi ed fi lter 40 80 mA, pk-pk GENERAL and SAFETY Effi ciency Vin=48V, full load, +25˚C. 92 93 % @ Vin=Max 91.0 92.0 % Isolation Isolation Voltage Input to output, continuous 2250 Vdc Input to Baseplate, continuous 1500 Output to Baseplate, continuous 1500 Insulation Safety Rating basic Isolation Resistance 10 Mohm Isolation Capacitance 1,000 pF Safety Certifi ed to UL-60950-1, CSA-C22.2 No.60950- 1, IEC/EN60950-1, 2nd edition Yes Calculated MTBF Per Telcordia SR332, issue 1 class 3, ground fi xed, Tambient=+25˚C 1.2 Hours x 10 6 DYNAMIC CHARACTERISTICS Fixed Switching Frequency 380 420 460 KHz Startup Time Power On to Vout regulated (100% resistive load) 25 50 mS Startup Time Remote ON to 10% Vout (50% resistive load) 25 50 mS Dynamic Load Response 50-75-50% load step, settling time to within ±1% of Vout di/dt = 1 A/μSec 2500 3500 μSec Dynamic Load Peak Deviation same as above ±500 ±1000 mV FEATURES and OPTIONS Remote On/Off Control ➂ “N” suffi x: Negative Logic, ON state ON = ground pin or external voltage –0.1 0.8 V Negative Logic, OFF state OFF = pin open or external voltage 2.5 15 V Control Current open collector/drain 1 2 mA “P” suffi x: Positive Logic, ON state ON = pin open or external voltage 3.5 15 V Positive Logic, OFF state OFF = ground pin or external voltage 0 1 V Control Current open collector/drain 1 2 mA Remote Sense Compliance Vsense=Vout–Vload, Sense connected at load 10 % of Vout
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 9 o f 21 www.murata-ps.com/support Notes ➀ Unless otherwise noted, all specifi cations are at nominal input voltage, nominal output voltage and full load. General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convection airfl ow. All models are tested and specifi ed with external parallel 1 μF and 470 μF output capacitors. A 220μF external input capacitors is required. All capacitors are low-ESR types wired close to the converter. ➁ Input (back) ripple current is tested and specifi ed over 5 Hz to 20 MHz bandwidth. Input fi ltering is Cbus=220 μF/100V, Cin=470 μF/100V and Lbus=12 μH. ➂ The Remote On/Off Control is referred to -Vin. ➃ Over-current protection is non-latching with auto reovery (Hiccup) ➄ Regulation specifi cations describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. ➅ Required minimum output capacitance is 470 μF, low ESR. OUTPUT Conditions Minimum Typical/Nominal Maximum Units Total Output Power See Derating 0.0 350 355.25 W Voltage Nominal Output Voltage No trim 27.58 28 28.42 Vdc Setting Accuracy At 50% load -1.5 1.5 % of Vnom. Output Voltage Range User-adjustable 16.8(-40%) 32.2(+15%) Vdc Overvoltage Protection Via magnetic feedback 34 36 50 Vdc Current Output Current Range 0 12.5 A Minimum Load No minimum load Current Limit Inception ➃ 98% of Vnom., after warmup 16 19 25 A Short Circuit Short Circuit Current Hiccup technique, autorecovery within ±1% of Vout 0.01 0.1 A Short Circuit Duration (remove short for recovery) Output shorted to ground, no damage Continuous Short circuit protection method Current limiting Regulation ➄ Line Regulation Vin=min. to max. Vout=nom. ±0.25 % Load Regulation Iout=min. to max. Vin=48V. ±0.25 % Ripple and Noise 5 Hz- 20 MHz BW 100 300 mV pk-pk Temperature Coeffi cient At all outputs ±0.015 % of Vnom./°C External output capacitance required ➅ Cap. ESR=<0.02Ω, Full resistive load 470 4700 μF MECHANICAL (Through Hole Models) Outline Dimensions with baseplate; see mechanical drawings 2.3 x 2.4 x 0.5 Inches 58.4 x 60.96 x 12.7 mm Weight 3.67 Ounces
104 Grams
Through Hole Pin Diameter Pins 1–4, 6–8/5,9 0.04/0.08 Inches 1.016/2.032 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 100-299 μ-inches Gold overplate 10.31 μ-inches Case or Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range With derating, full power, measured at Tref -40 85 ˚C Operating Case Temperature -40 120 ˚C Storage Temperature Vin = Zero (no power) -55 125 ˚C Thermal Protection/Shutdown Measured in center 115 125 130 ˚C Electromagnetic Interference Conducted, EN55022/CISPR22 External fi lter required B Class Radiated, EN55022/CISPR22 B Class Relative humidity, non-condensing To +85°C 10 90 %RH Altitude -500 10,000 feet (must derate -1%/1000 feet) -152 3048 meters RoHS rating RoHS-6 FUNCTIONAL SPECIFICATIONS, PAH-28/12.5-D48 (CONT.)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 10 of 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D48 Effi ciency and Power Dissipation, Ambient Temperature = +25°C Maximum Current Temperature Derating at sea level (Vin=48V, longitudinal airfl ow, from Vin to Vout, with baseplate) Output Power Derating in Conduction Cooling (Cold Baseplate) Applications (Vin=48V, Ambient Temperature <70°C) Maximum Current Temperature Derating at sea level (Vin=48V, longitudinal airfl ow, from Vin to Vout, with baseplate) VIN = 36V VIN = 48V Power Dissipation VIN = 48V VIN = 75V Efficiency (%) Dissipation (Watts) Iout (Amps) Maximum Current Temperature Derating at sea level (Vin=48V, transverse airfl ow, from Vin- to Vout+, with baseplate) Maximum Current Temperature Derating at sea level (Vin=48V, transverse airfl ow, from Vin- to Vout+, with baseplate) 30 35 40 45 50 55 60 65 70 75 80 85 0.25 m/s (50 LFM) 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) Output Current (Amps) Ambient Temperature (°C) 160 200 180 220 240 260 280 300 340 320 360 30 35 40 45 50 55 60 65 70 75 80 85 0.25 m/s (50 LFM) 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) Output Power (Watts) Ambient Temperature (°C) 30 35 40 45 50 55 60 65 70 75 80 85 0.25 m/s (50 LFM) 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) Output Current (Amps) Ambient Temperature (°C) 250 275 300 325 350 375 20 30 40 50 60 70 80 90 100 Output Power (Watts) Cold Baseplate (Interior) Temperature (°C) 160 200 180 220 240 260 280 300 340 320 360 30 35 40 45 50 55 60 65 70 75 80 85 0.25 m/s (50 LFM) 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 2.5 m/s (500 LFM) 3.0 m/s (600 LFM) Output Power (Watts) Ambient Temperature (°C)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 11 of 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D48 On/Off Enable Startup (Vin=48V, Vout=nom, Iout=12.5A, Cload=470μF, Ta=+25°C) Ch2=Vout, Ch4=Enable Startup Delay (Vin=48V, Vout=nom, Iout=12.5A, Cload=470μF, Ta=+25°C)Ch1=Vin, Ch2=Vout Output Ripple and Noise (Vin=48V, Vout=nom, Iout=0A, Cload=470μF, Ta=+25°C) Output Ripple and Noise (Vin=48V, Vout=nom, Iout=12.5A, Cload=470μF, Ta=+25°C)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 12 of 21 www.murata-ps.com/support TYPICAL PERFORMANCE DATA, PAH-28/12.5-D48 Step Load Transient Response (Vin=48V, Vout=nom, Cload=470μF, Iout=75 % to 50% of full load, Ta=+25°C) Step Load Transient Response (Vin=48V, Vout=nom, Cload=470μF, Iout=50% to 75% of full load, Ta=+25°C) Step Load Transient Response (Vin=48V, Vout=nom, Cload=470μF, Iout=50-75-50% of full load, Ta=+25°C)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 13 of 21 www.murata-ps.com/support MECHANICAL SPECIFICATIONS Since there is some pinout inconsistency between manufacturers of half brick converters, be sure to follow the pin function, not the pin number, when laying out your board. Standard pin length is shown. Please refer to the Part Number Structure for special order pin lengths. * Note that the “case” connects to the baseplate (when installed). This case connection is isolated from the rest of the converter. Pin 2 may be deleted under special order. Please contact Murata Power Solutions for information. The Trim connection may be left open and the converter will achieve its rated output voltage. Third Angle Projection Dimensions are in inches (mm shown for ref. only). Components are shown for reference only. Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) Angles ± 2˚ INPUT/OUTPUT CONNECTIONS Pin Function −Vin
2 Case ground
3 On/Off Control
7 Trim
8 −Sense 9 −Vout L MOUNTING INSERT OPTIONAL B: M3 THREAD TYP 4PL B1: ij3.2 THRU HOLE TYP 4PL PINS 1-4,6-8: PINS 5,9: SEE NOTE 8 0.50 (12.7) 0.010 (0.254) Min 3:ALL DIMENSION ARE IN INCHES [MILLIMETERS]; 1:FOR OPTIONAL M3, THE M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER UNLESS OTHERWISE SPECIFIED: NOTES: 4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm) SURFACES (SUCH AS HEATSINK) MUST NOT OUT OF THE RANGE FROM 0.138''(3.5mm) TO 0.236''(6mm)DEPTH BELOW THE SURFACE OF BASEPLATE 2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm); FOR L2 PIN LENGTH OPTION IN MODEL NAME, USE STANDARD L2 PIN WITH PIN LENGTH TO 0.145 Inch 8:STANDARD PIN LENGTH: 0.180 Inch 7:*The Remote On/Off Can Be Provided With Either Positive Or Negative ("N"Suffix) Logic BEFORE REMOVAL OF PROTECTIVE HEAT SHIELD; 5:COMPONENTS WILL VARY BETWEEN MODELS PIN STANDOFF IS LOWER THAN DIA 3.2mm THROUGH HOLE RIVET STANDOFF SECTION A-A 0.126 (3.2) Min THREADED TYP 4PL 0.50 (12.7) 0.008 (0.20) 0.335 (8.51) TYP 4PL Top View 1.900 (48.26) 0.165 (4.19) ±0.015 (±0.38) 0.600 (15.24) 1.400 (35.56) 2.40 (60.96) 0.600 (15.24) 1.400 (35.56) 2.30 (58.42) Bottom Pin Side View 2.00 (50.8)
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 14 of 21 www.murata-ps.com/support BASEPLATE WITH STANDARD M3-12.7 THREADED RIVET BASEPLATE WITH UNTHREADED INSERT
PAH-28 Vout, 350-Watt Series Isolated, 350-Watt, Half-Brick DC-DC Converters MDC_PAH-28Vout-350W.B08 Page 15 of 21 www.murata-ps.com/support SHIPPING TRAYS: LOW DENSITY CLOSED CELL POLYETHYLENE STATIC DISSIPATIVE FOAM SHIPPING BOXES Third Angle Projection Dimensions are in inches (mm shown for ref. only). Components are shown for reference only. Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) Angles ± 2˚ 9.920 (251.97) 9.920 (251.97) .25 (6.35) R TYP 0.625 (15.86) TYP 2.400 (60.96) TYP 1.150 (29.21) TYP0.625 (15.86) -.062 +.000 TYP 2.300 (58.42) .25 (6.35) CHAMFER TYP (4-PL) TYP +.000 -.062 0.50 (12.7) Anti-static foam Label top side 10(254) 10 (254) 4.25(107.95)
nent damage to the converter. turn off until the input voltage drops below the Under-Voltage Shutdown Limit. tion at a single input voltage. operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. regulated output voltage enters and remains within its specifi ed accuracy band. PWM controller at power up, thereby limiting the input inrush current. such as external load capacitance and soft start circuitry. TECHNICAL NOTES impedance, performance is improved by adding external fi lter components. totally characterize all applications, some experimentation may be needed. Note that external input capacitors must accept high speed switching currents. adequate trace sizes and mount components close to the converter. of Cin, Lbus and Cbus will vary according to the specifi c converter model. Figure 2. Measuring Input Ripple Current Application Engineers can recommend potential solutions. exhibit tiny leakage currents between input and output (see Specifi cations).
(+Output) as the ground return to effectively reverse the output polarity. unit. See the Performance and Functional Specifi cations. tion to avoid unplanned thermal shutdown. under increasing forced airfl ow measured in Linear Feet per Minute (“LFM”). itself which is obviously running at higher temperature than the outside air. convection”, that is, not using fan-forced airfl ow. measurement techniques of suggested temperature sensors. the derating for higher density altitude. the converter for this automatic OVP-recovery restart. without damaging the converter. converter will enter a current-limiting mode. what constant power output. This is commonly referred to as power limiting. current is too high, the converter will enter the short circuit condition. output current demand increases. tures. A short circuit can be tolerated indefi nitely. Figure 3. Measuring Output Ripple and Noise (PARD)
installed and the circuit diagram is shown below. refer to Application Note GEAN02 for further discussion. recommend using an engineer who is experienced at emissions suppression. Figure 10. Conducted Emissions Test Circuit
notice. © 2016 Murata Power Solutions, Inc. Murata Power Solutions, Inc. mentation for accurate airfl ow and heat dissipation analysis of power products. is transparent to infrared wavelengths. very wide range of measurement conditions can be studied. Figure 11. Vertical Wind Tunnel