PAE Series www.murata-ps.com Up to 100W 29.8V Nom Output Eighth-Brick Isolated R DC-DC Converter with 2:1 Wide Input Range Typical units KEY PRODUCT FEATURES S PRODUCT OVERVIEW 2:1 Input Voltage Range (36V – 75V) Murata Power Solutions’ fully isolated Power Amplifier Eighth-Brick series of DC-DC converters has been designed specifically for use with multi-channel power amplifiers such as those found in the latest generation of microcell wireless transceiver applications requiring up to 100W. With a typical efficiency of 92.5%, the PAE series keeps power dissipation on the module to a minimum, therefore, reducing system temperatures and helping network operators save energy costs. The through-hole mounted converter is available with an optional baseplate for conduction cooled/cold wall applications typically found in base-station applications and remote radio heads. The converter operates over the industry standard TNV input voltage range of + 36 to +75 VDC Trimmable 23.84 (-20%) to 32.78 (10%) Volts output (29.8V, nom) Up to 100W output power @ 36 - 75Vin Efficiency = 92.5% (typ) Industry standard 1/8 brick package Optional Baseplate for conduction cooling applications Optional Baseplate to ground connection pin Positive & negative logic on/off control option Monotonic startup into pre-bias/pre load output conditions Over-current (power limiting); Over-temperature protection; Over-Voltage Protection Low output ripple and noise around a nominal +48 VDC. The single +29.8 Vout can be adjusted over a wide range, from +23.84 to 32.78 VDC, to maximize flexibility for power amplifier system designers. Controls include remote On/Off control of either negative or positive polarity. In addition the converter has a number of protection features including over current, over temperature, input under voltage and output short circuit. The PAE series has been designed to meet the demanding “low noise” requirements in modern communications systems and will require minimal Vout filtering in most applications. Other example applications for the PAE include indoor/outdoor WiFi installations, RF test equipment, CATV systems and MRI imaging equipment. Strong thermal derating performance Operational temperature range –40°C to +100°C (baseplate temperature) 1500V I/O isolation Certified to UL 60950-1, CSA-C22.2 No. 609501, 2nd edition with Am1 safety approvals +Vin F1 +Vout Barrier Baseplate ground External (B3 option) DC Power Source Power Switch, Current Sense, and Transfer Mechanisms Open = On On/Off Control Isolated Gate Drive Reference, Controller, Power Transfer, and Error Amplifier logic) -Vin Trim -Vout Figure 1. Connection Diagram Typical topology is shown. Murata Power Solutions recommends an external fuse. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_PAE Series.A01 Page 1 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range ORDERING GUIDE ➀ Output Input R/N (mV pk-pk) Root Model ➀ PAE-29/3-D48 IOUT IIN full Regulation (Max.) ➁ VIN Nom. Range IIN no VOUT (Amps, Power load (Volts) max.) (Watts) Typ. Max. (Volts) (Volts) load (mA) (Amps) Line Load 29.8 3.3 98.34 65 100 ±0.1% ±0.1% 48 ➀ Please refer to the part number structure for additional ordering information and options. ➁ All specifications are typical at nominal line voltage and full load, +25°C unless otherwise noted. See 36-75 12 2.21 Efficiency Min. Typ. Dimensions (open frame) (inches) (mm) 91% 92.5% 2.3 x 0.90 x 0.44 58.4 x 22.9 x 11.1 detailed specifications. Output capacitors are 1 μF || 10 μF with a 22μf input capacitor. These caps are necessary for our test equipment and may not be needed for your application. PART NUMBER STRUCTURE PAE - 29 / 3 - D48 N B 3 Lx - C Power Amplifier Eighth-Brick Nominal Output Voltage (29.8V) Maximum Rated Output Current in Amps(3.3A) Input Voltage Range D48 = 36-75 Volts (48V nominal) On/Off Control Logic N = Negative logic P = Positive logic RoHS Hazardous Materials compliance C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder), standard Pin length option Blank = standard pin length 0.188 in. (4.78 mm) L1 = 0.110 in. (2.79 mm)➀ L2 = 0.145 in. (3.68 mm)➀ Baseplate Pin 3, see Mechanical Drawings (special order) ➀ Blank = No pin 3, standard 3 = Pin 3 installed, optional Baseplate Option Blank = No baseplate B = Baseplate installed ➀ Special quantity order is required; samples available with standard pin length only. ➁ Some model number combinations may not be available. See website or contact your local Murata sales representative. PAE Pin 3 Baseplate Connection The PAE module has an additional pin 3 on special order that connects to the baseplate but is electrically isolated from the rest of the converter. Please refer to the mechanical drawings. Pin 3 offers a positive method of controlling the electrical potential of the baseplate, independent of the converter. The baseplate may be ordered by adding a “B” to the model number tree and pin 3 will be preinstalled by adding a “3.” The two options are separate. Please refer to the Ordering Guide. Do not order pin 3 without the baseplate. Note that “pin 3” converters may be on limited forecast, requiring minimum order quantities and scheduled deliveries. Complete Model Number Example: PAE-29/3-D48NBL1-C Negative On/Off logic, baseplate installed, 0.110˝ pin length, RoHS-6 compliance www.murata-ps.com/support MDC_PAE Series.A01 Page 2 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range FUNCTIONAL SPECIFICATIONS Conditions ➀ /Comments ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage On/Off Remote Control Output Power Minimum Typical/Nominal 0 100 mS max. duration Input to output, continuous Power on, referred to -Vin Maximum 80 100 1500 13.5 99.32 0 0 Units Vdc Vdc Vdc Vdc W Current-limited, no damage, short-circuit 0 3.3 A protected 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 Specifications Table is not implied or recommended. Output Current Conditions ➀ ➂ INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Current Shut-Down Input Current (Off, UV, OT) Reflected (back) ripple current ➁ Pre-biased startup Fast blow Rising input voltage Falling input voltage 36 48 33 30 34 31.5 LC Vin = nominal Vin = minimum 2.21 2.97 0.09 0.1 12 2.2 10 Monotonic Iout = minimum, unit = ON Measured at input with specified filter External output voltage < Vset 75 6 35 33 Vdc A Vdc Vdc 2.27 3.07 0.155 0.2 25 4 25 A A A2-Sec. A mA mA mA, p-p GENERAL and SAFETY Efficiency Vin = 48V, full load Vin = min. 91 90 92.5 92 % % Isolation Isolation Voltage Isolation Resistance Isolation Capacitance Safety (certified to the following requirements) Calculated MTBF Input to output (with and w/o baseplate), continuous Input to baseplate Output to baseplate 1500 Vdc 750 750 Vdc Vdc MΩ pF 100 14,000 Certified to UL-60950-1, CSA-C22.2 No. 609501, 2nd edition with Am1 Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient = +25°C Yes Hours x 106 TBD DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic Load Peak Deviation 225 Power on to Vout regulated Remote on to Vout regulated 50-75-50% load step, settling time to within 3% of Vout same as above 250 50 130 275 75 150 KHz mS mS 75 150 μSec ±275 ±375 mV 1 13.5 Vdc Vdc mA 13.5 1 Vdc Vdc mA FEATURES and OPTIONS Remote On/Off Control ➃ “N” suffix: Negative Logic, ON state Negative Logic, OFF state Control Current “P” suffix: Positive Logic, ON state Positive Logic, OFF state Control Current ON = Ground pin or external voltage OFF = Pin open or external voltage Open collector/drain 0 3.5 ON = Pin open or external voltage OFF = Ground pin or external voltage Open collector/drain 3.5 0 1 1 www.murata-ps.com/support MDC_PAE Series.A01 Page 3 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range FUNCTIONAL SPECIFICATIONS, (CONT.) Conditions ➀ /Comments OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Regulation ➄ Total Accuracy: Line Regulation Load Regulation Ripple and Noise Remote Sense Case to Ground pin option Baseplate option Temperature Coefficient Maximum Capacitive Loading Minimum Typical/Nominal Maximum Units 0 98.34 99.32 W 29.502 -1 -20 29.8 30.098 1 10 Vdc % of Vnom % of Vnom Vdc 3.3 4.8 3.3 5.8 A A Hiccup technique, autorecovery within 2% of Vout 0.8 1.5 A Output shorted to ground, no damage Continuous 30.69 ±0.1 ±0.1 100 Vdc % of Vout % of Vout mV pk-pk % No trim At 50% load, no trim User-adjustable 39 97% of Vnom., after warmup 0 3.8 Current limiting Over line, load(0-3.3A), and temp. Vin = min. to max., Vout = nom., Iout = nom. Iout = min. to max., Vin = 48V 5 Hz- 20 MHz BW 28.906 65 10 ("3" Suffix) ("B" Suffix) At all outputs Low ESR ±0.02 1 2.2 % of Vout./°C mF MECHANICAL Outline Dimensions (open frame) For outline dimensions with baseplate, please refer to mechanical drawing Weight Open frame With baseplate Through Hole Pin Diameter Through Hole Pin Material TH Pin Plating Metal and Thickness pins (1-4, 6-8) & (5, 9) Nickel subplate Gold overplate 2.3 x 0.90 x 0.44 Inches 58.4 x 22.9 x 11.1 mm 0.94 26.6 1.4 45 0.04 & 0.06 1.016 & 1.52 Copper alloy 50 5 Ounces Grams Ounces Grams Inches mm μ-inches μ-inches ENVIRONMENTAL Operating Ambient Temperature Range Operating Baseplate Temperature Storage Temperature Thermal Protection/Shutdown Electromagnetic Interference Conducted, EN55022/CISPR22 RoHS rating Notes With Derating No derating, Vin = Zero (no power) Measured in center External filter is required ➀ Unless otherwise noted, all specifications apply at Vin = nominal, nominal output voltage and full output load. General conditions are near sea level altitude, no base plate installed and natural convection airflow unless otherwise specified. All models are tested and specified with external parallel 1 μF and 10 μF output capacitors and a 22μf external input capacitor (see Technical Notes). All capacitors are low-ESR types wired close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user’s application. ➁ Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cin = 33 μF/100V, Cbus = 220μF/100V and Lbus = 12 μH. -40 -40 -55 115 125 B RoHS-6 85 100 125 135 °C °C °C °C Class ➂ All models are stable and regulate to specification under no load. ➃ The Remote On/Off Control is referred to -Vin. ➄ Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. The load step is ±25% of full load current. www.murata-ps.com/support MDC_PAE Series.A01 Page 4 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range PERFORMANCE DATA Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Load Current @ +25°C 93 92 91 VIN = 36V VIN = 48V VIN = 60V VIN = 75V 89 Efficiency (%) Power Dissipation (Watts) 90 88 87 86 85 84 83 82 0.36 0.73 1.10 1.46 1.83 2.20 Load Curre nt (Amps) 2.57 2.93 3.30 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0.36 VIN = 36V VIN = 48V VIN = 60V VIN = 75V 0.73 1.10 1.46 1.83 2.20 2.57 2.93 3.30 Output Load Curre nt (Amps) Vout Output Current Limit vs. Output Voltage (at various input line voltages) 32.5 30 27.5 25 22.5 20 17.5 15 12.5 10 7.5 5 2.5 0 VIN = 75V VIN = 36V VIN = 60V VIN = 48V 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 6.2 6.4 6.6 6.8 7 7.2 7.4 7.6 7.8 8 Amps Maximum Current Temperature Derating at sea level (Vin = 36V, airflow from pin 1 to pin 4, with baseplate) 4 4 3 3 Output Current (Amps) Output Current (Amps) Maximum Current Temperature Derating at sea level (Vin = 36V, airflow from pin 1 to pin 4, without baseplate) Still Air 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 1 Still Air Cold Wall 0.5 m/s (100 LFM) 2 1 0 0 30 35 40 45 50 55 60 65 Ambient Temperature (°C) 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (°C) www.murata-ps.com/support MDC_PAE Series.A01 Page 5 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range PERFORMANCE DATA Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from pin 1 to pin 4, with baseplate) 4 4 3 3 Output Current (Amps) Output Current (Amps) Maximum Current Temperature Derating at sea level (Vin = 48V, airflow from pin 1 to pin 4, without baseplate) Still Air 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 1 Still Air Cold Wall 0.5 m/s (100 LFM) 2 1 0 0 30 35 40 45 50 55 60 65 70 75 80 30 85 35 40 45 4 3 3 Output Current (Amps) Output Current (Amps) 4 Still Air 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s (300 LFM) 2.0 m/s (400 LFM) 1 60 65 70 75 80 85 80 85 80 85 Still Air Cold Wall 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 2 1 0 0 30 35 40 45 50 55 60 65 70 75 80 30 85 35 40 45 Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from pin 1 to pin 4, without baseplate) 55 60 65 70 75 Maximum Current Temperature Derating at sea level (Vin = 75V, airflow from pin 1 to pin 4, with baseplate) 4 3 3 Output Current (Amps) 4 Still Air 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 50 Ambient Temperature (°C) Ambient Temperature (°C) Output Current (Amps) 55 Maximum Current Temperature Derating at sea level (Vin = 60V, airflow from pin 1 to pin 4, with baseplate) Maximum Current Temperature Derating at sea level (Vin = 60V, airflow from pin 1 to pin 4, without baseplate) 2 50 Ambient Temperature (°C) Ambient Temperature (°C) 1 Still Air Cold Wall 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 2 1 0 0 30 35 40 45 50 55 60 65 Ambient Temperature (°C) 70 75 80 85 30 35 40 45 50 55 60 65 70 75 Ambient Temperature (°C) www.murata-ps.com/support MDC_PAE Series.A01 Page 6 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range PERFORMANCE DATA Start up Delay (Vin = 48V, Vout = nom, Iout = full load, Ta = +25°C) Ch1 = Vin, Ch4 = Vout Enable Start up Delay (Vin = 48V, Vout = nom, Iout = full load, Ta = +25°C) Ch1 = Enable, Ch4 = Vout Step load Transient Response (Vin = 48V, Vout = nom, Cload = 10μf || 1μf, Iout = 50-75-50% of full load , Ta = +25°C) Ch1 = Iout, Ch4 = Vout Output Ripple and Noise (Vin = 48V, Iout = 3.3A, Cload = 1μf||10μf, Ta = +25°C) Thermal image with hot spot at full load current with +25°C ambient; air is flowing at 20 LFM. Air is flowing across the converter from -Vout to +Vout at 48V input. www.murata-ps.com/support MDC_PAE Series.A01 Page 7 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range MECHANICAL SPECIFICATIONS: OPEN FRAME MATERIAL: 0.040 PINS: COPPER ALLOY 0.060 PINS: COPPER ALLOY FINISH: (ALL PINS) GOLD (5μ"MIN) OVER NICKEL (50μ" MIN) TOP VIEW END VIEW 4.8 0.19 (NOTE 1) 11.1 0.44 58.4 2.30 1°MAX (ALL PINS) 4.8 0.19 REF 22.9 0.90 0.25 0.010 MIN CLEARANCE BETWEEN MTG PLANE AND COMPONENTS ON CONVERTER END VIEW SIDE VIEW PIN SHOULDERS (MTG PLANE) MTG PLANE 1.80±0.05 0.071±0.002 SHOULDER @ PINS 1-2, 4, 6-8 1.52±0.05 0.060±0.002 (PINS 5 & 9) 1.02±0.05 0.040±0.002 (PINS 1-2, 4, 6-8) 50.80 2.000 4 15.24 0.600 5 6 7 8 9 2 1 7.62 0.300 CL 3.81 0.150 CL 3.81 0.150 25.4 1.00 BOTTOM VIEW 1. ALTERNATE PIN LENGTHS AVAILABLE (CONTACT MURATA-PS FOR INFORMATION) 2. COMPONENTS SHOWN FOR REF ONLY 3. DIMENSIONS ARE IN INCHES [mm] 4. PIN LOCATION DIMENSIONS APPLY AT CIRCUIT BOARD LEVEL Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. INPUT/OUTPUT CONNECTIONS Pin Function 1 + Vin 2 Remote On/Off * 3 No pin 4 – Vin 5 – Vout 6 – Sense 7 Trim 8 + Sense 9 + Vout *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic. www.murata-ps.com/support MDC_PAE Series.A01 Page 8 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range MECHANICAL SPECIFICATIONS: WITH BASEPLATE MATERIAL: 0.040 PINS: COPPER ALLOY 0.060 PINS: COPPER ALLOY FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN) 1.91 0.075 REF END VIEW M3x0.5 x 0.10 MAX PENETRATION (x2) END VIEW 58.4 2.30 2.54 2x 0.100 12.4 0.49 10.4 2x 0.41 4.8 0.19 (NOTE 1) 4.8 0.19 REF TOP VIEW 36.8 1.45 1°MAX (ALL PINS) 15.24 0.600 22.9 0.90 26.16 1.030 47.24 1.860 5.6 0.22 0.25 0.010MIN CLEARANCE BETWEEN MTG PLANE AND COMPONENTS ON CONVERTER R0.063 PIN SHOULDERS (MTG PLANE) 50.80 2.000 ALUMINUM BASEPLATE SIDE VIEW MTG PLANE 1.80±0.05 0.071±0.002 SHOULDER @ PINS 1-4, 6-8 1.52±0.05 0.060±0.002 (PINS 5 & 9) 1.02±0.05 0.040±0.002 (PINS 1-4, 6-8) 50.80 2.000 4 15.24 0.600 5 3 6 7 8 9 2 1 7.62 0.300 1. ALTERNATE PIN LENGTHS AVAILABLE (CONTACT MURATA-PS FOR INFORMATION) 2. COMPONENTS SHOWN FOR REF ONLY 3. DIMENSIONS ARE IN INCHES [mm] 4. PIN LOCATION DIMENSIONS APPLY AT CIRCUIT BOARD LEVEL Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. CL 25.4 1.00 3.81 0.150 CL 3.81 0.150 BOTTOM VIEW INPUT/OUTPUT CONNECTIONS Pin Function 1 + Vin 2 Remote On/Off * 3 Baseplate Gnd (when applicable) 4 – Vin 5 – Vout 6 – Sense 7 Trim 8 + Sense 9 + Vout *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic. www.murata-ps.com/support MDC_PAE Series.A01 Page 9 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range MECHANICAL SPECIFICATIONS: RECOMMENDED FOOTPRINT (VIEW THROUGH CONVERTER) TOP VIEW FINISHED HOLE SIZES PINS 1-4, 6-8 (PER IPC-D-275, LEVEL C) (PER IPC-D-275, LEVEL C) 50.80 2.000 .048-.062 .070-.084 (PRI) (SEC) CL 7.62 .300 8 2 7 6 5 3 4 25.4 1.00 .100 MIN @ ALL PINS FOR PIN SHOULDERS 3.81 .150 9 1 23.4 .92 FINISHED HOLE SIZES @ PINS 5 & 9 CL 7.62 .300 CL 3.81 .150 58.9 2.32 IT IS RECOMMENDED THAT NO PARTS BE PLACED BENEATH CONVERTER (HATCHED AREA) Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_PAE Series.A01 Page 10 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range STANDARD PACKAGING: OPEN FRAME EACH STATIC DISSIPATIVE POLYETHYLENE FOAM TRAY ACCOMMODATES 21 CONVERTERS IN A 3 X 7 ARRAY 9.92 REF 9.92 REF .88 REF 2.75±.25 CLOSED HEIGHT SMALL CARTON ACCOMMODATES TWO (2) TRAYS YIELDING 42 CONVERTERS PER CARTON MPQ=42 11.00±.25 10.50±.25 Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_PAE Series.A01 Page 11 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range STANDARD PACKAGING: WITH BASEPLATE 9.92 REF 9.92 REF EACH STATIC DISSIPATIVE POLYETHYLENE FOAM TRAY ACCOMMODATES 15 CONVERTERS IN A 3 X 5 ARRAY .88 REF 2.75±.25 CLOSED HEIGHT CARTON ACCOMMODATES TWO (2) TRAYS YIELDING 30 CONVERTERS PER CARTON MPQ=30 11.00±.25 10.50±.25 Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. www.murata-ps.com/support MDC_PAE Series.A01 Page 12 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the +Vin input supply line. The installer must observe all relevant safety standards and regulations. For safety agency approvals, install the converter in compliance with the end-user safety standard. Input Under-Voltage Shutdown and Start-Up Threshold Under normal start-up conditions, converters will not begin to regulate properly until the rising input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off operation at a single input voltage. Users should be aware however of input sources near the Under-Voltage Shutdown whose voltage decays as input current is consumed (such as capacitor inputs), the converter shuts off and then restarts as the external capacitor recharges. Such situations could oscillate. To prevent this, make sure the operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. Start-Up Delay Assuming that the output current is set at the rated maximum, the Vin to Vout StartUp Delay (see Specifications) is the time interval between the point when the rising input voltage crosses the Start-Up Threshold and the fully loaded regulated output voltage enters and remains within its specified regulation band. Actual measured times will vary with input source impedance, external input capacitance, input voltage slew rate and final value of the input voltage as it appears at the converter. These converters include a soft start circuit to moderate the duty cycle of the PWM controller at power up, thereby limiting the input inrush current. The On/Off Remote Control interval from inception to VOUT regulated assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified regulation band. The specification assumes that the output is fully loaded at maximum rated current. Input Source Impedance These converters will operate to specifications without external components, assuming that the source voltage has very low impedance. Since real-world voltage sources have finite impedance, performance is improved by adding external filter components. Sometimes only a small ceramic capacitor is sufficient. Since it is difficult to totally characterize all applications, some experimentation may be needed. Note that external input capacitors must accept high speed switching currents. Because of the switching nature of DC/DC converters, the input of these converters must be driven from a source with both low AC impedance and adequate DC input regulation. Performance will degrade with increasing input inductance. Excessive input inductance may inhibit operation. The DC input regulation specifies that the input voltage, once operating, must never degrade below the Shut-Down Threshold under all load conditions. Be sure to use adequate trace sizes and mount components close to the converter. I/O Filtering, Input Ripple Current and Output Noise All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/output components, circuits and layout as shown in the figures below. External input capacitors (CIN in the figure) serve primarily as energy storage elements, minimizing line voltage variations caused by transient IR drops in the input conductors. Users should select input capacitors for bulk capacitance (at appropriate frequencies), low ESR and high RMS ripple current ratings. In the figure below, the CBUS and LBUS components simulate a typical DC voltage bus. Specific system configurations may require additional considerations. Please note that the values of CIN, LBUS and CBUS may vary according to the specific converter model. TO OSCILLOSCOPE CURRENT PROBE +Vin VIN + – + – LBUS CBUS CIN −Vin CIN = 33μF, ESR < 200mΩ @ 100kHz CBUS = 220μF, 100V LBUS = 12μH Figure 2. Measuring Input Ripple Current In critical applications, output ripple and noise (also referred to as periodic and random deviations or PARD) may be reduced by adding filter elements such as multiple external capacitors. Be sure to calculate component temperature rise from reflected AC current dissipated inside capacitor ESR. In figure 3, the two copper strips simulate real-world printed circuit impedances between the power supply and its load. In order to minimize circuit errors and standardize tests between units, scope measurements should be made using BNC connectors or the probe ground should not exceed one half inch and soldered directly to the fixture. +Vout C1 C2 SCOPE RLOAD −Vout C1 = 1μF C2 = 10μF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 3. Measuring Output Ripple and Noise (PARD) www.murata-ps.com/support MDC_PAE Series.A01 Page 13 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range Floating Outputs Since these are isolated DC/DC converters, their outputs are “floating” with respect to their input. The essential feature of such isolation is ideal ZERO CURRENT FLOW between input and output. Real-world converters however do exhibit tiny leakage currents between input and output (see Specifications). These leakages consist of both an AC stray capacitance coupling component and a DC leakage resistance. When using the isolation feature, do not allow the isolation voltage to exceed specifications. Otherwise the converter may be damaged. Designers will normally use the negative output (-Output) as the ground return of the load circuit. You can however use the positive output (+Output) as the ground return to effectively reverse the output polarity. Minimum Output Loading Requirements These converters employ a flyback design topology. All models regulate within specification and are stable under no load to full load conditions. Operation under no load might however slightly increase output ripple and noise. Thermal Shutdown To protect against thermal over-stress, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC/ DC’s to rise above the Operating Temperature Range up to the shutdown temperature, an on-board electronic temperature sensor will power down the unit. When the temperature decreases below the turn-on threshold, the converter will automatically restart. There is a small amount of hysteresis to prevent rapid on/off cycling. CAUTION: If you operate too close to the thermal limits, the converter may shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air temperature and decreasing maximum output current which is acceptable under increasing forced airflow measured in Linear Feet per Minute (“LFM”). Note that these are AVERAGE measurements. The converter will accept brief increases in temperature and/or current or reduced airflow as long as the average is not exceeded. Note that the temperatures are of the ambient airflow, not the converter itself which is obviously running at higher temperature than the outside air. Also note that “natural convection” is defined as very low flow rates which are not using fan-forced airflow. Depending on the application, “natural convection” is usually about 30-65 LFM but is not equal to still air (0 LFM). Output Overvoltage Protection (OVP) This converter monitors its output voltage for an over-voltage condition using an on-board electronic comparator. If the output exceeds OVP limits, the sensing circuit will power down the unit, and the output voltage will decrease. After a time-out period, the PWM will automatically attempt to restart, causing the output voltage to ramp up to its rated value. It is not necessary to power down and reset the converter for this automatic OVP-recovery restart. If the fault condition persists and the output voltage climbs to excessive levels, the OVP circuitry will initiate another shutdown cycle. This on/off cycling is referred to as “hiccup” mode. Current Limiting (Power limit with current mode control) As power demand increases on the output and enters the specified “limit inception range” limiting circuitry activates in the DC-DC converter to limit/ restrict the maximum current or total power available. Once the current reaches a certain range the output voltage will start to decrease while the output current continues to increase, thereby maintaining constant power, until a minimum voltage set is reached and the converter enters a “hiccup” (on off cycling) mode of operation until the load is reduced below the threshold level, whereupon it will return to a normal mode of operation. Current limit inception is defined as the point where the output voltage has decreased by a pre-specified percentage (usually a 2% decrease from nominal). Short Circuit Condition (Current mode control) The short circuit condition is an extension of the “Current Limiting” condition. When the monitored peak current signal reaches a certain range, the PWM controller’s outputs are shut off thereby turning the converter “off.” This is followed by an extended time out period. This period can vary depending on other conditions such as the input voltage level. Following this time out period, the PWM controller will attempt to re-start the converter by initiating a “normal start cycle” which includes softstart. If the “fault condition” persists, another “hiccup” cycle is initiated. This “cycle” can and will continue indefinitely until such time as the “fault condition” is removed, at which time the converter will resume “normal operation.” Operating in the “hiccup” mode during a fault condition is advantageous in that average input and output power levels are held low preventing excessive internal increases in temperature. Murata Power Solutions makes Characterization measurements in a closed cycle wind tunnel with calibrated airflow. Both thermocouples and an infrared camera system are used to observe thermal performance. Sometimes it is possible to estimate the effective airflow if you thoroughly understand the enclosure geometry, entry/exit orifice areas and the fan flowrate specifications. Trimming Output Voltage PAE converters have a trim capability that enables users to adjust the output voltage from +10% to –20% (refer to the trim equations). Adjustments to the output voltage can be accomplished with a single fixed resistor as shown in Figures 4 and 5. A single fixed resistor can increase or decrease the output voltage depending on its connection. Resistors should be located close to the converter and have TCR’s less than 100ppm/°C to minimize sensitivity to changes in temperature. If the trim function is not used, leave the trim pin open. CAUTION: If these Derating guidelines are exceeded, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected near Sea Level altitude. Be sure to reduce the derating for higher altitude. Standard PAE’s have a “positive trim” where a single resistor connected from the Trim pin to the +Sense will increase the output voltage. A resistor connected from the Trim Pin to the –Sense will decrease the output voltage. www.murata-ps.com/support MDC_PAE Series.A01 Page 14 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range Trim adjustments greater than the specified +10%/–20% can have an adverse affect on the converter’s performance and are not recommended. Excessive voltage differences between VOUT and Sense, in conjunction with trim adjustment of the output voltage, can cause the overvoltage protection circuitry to activate (see Performance Specifications for overvoltage limits). Temperature/power derating is based on maximum output current and voltage at the converter’s output pins. Use of the trim and sense functions can cause output voltages to increase, thereby increasing output power beyond the PAE’s specified rating, or cause output voltages to climb into the output overvoltage region. Therefore: (VOUT at pins) x (IOUT) rated output power +Vin +Vout +SENSE ON/OFF CONTROL TRIM LOAD RTRIM DOWN –SENSE –Vin –Vout Figure 5. Trim Connections To Decrease Output Voltages Using Fixed Resistors The Trim pin (pin 6) is a relatively high impedance node that can be susceptible to noise pickup when connected to long conductors in noisy environments. Trim Equations Trim Down Connect trim resistor between trim pin and −Sense RTrimDn (k Ω) = 5.11 − 10.22 ' Remote Sense Input Use the Sense inputs with caution. Sense is normally connected at the load. Sense inputs compensate for output voltage inaccuracy delivered at the load. This is done by correcting IR voltage drops along the output wiring and the current carrying capacity of PC board etch. This output drop (the difference between Sense and Vout when measured at the converter) should not exceed 0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also improve the stability of the converter and load system by optimizing the control loop phase margin. Note: The Sense input and power Vout lines are internally connected through low value resistors to their respective polarities so that the converter can operate without external connection to the Sense. Nevertheless, if the Sense function is not used for remote regulation, the user should connect +Sense to +Vout and –Sense to –Vout at the converter pins. Trim Up Connect trim resistor between trim pin and +Sense RTrimUp (k Ω) = 5.11 × VNOM × (1+' − 5.11 − 10.22 ' 1.225 × ' The remote Sense lines carry very little current. They are also capacitively coupled to the output lines and therefore are in the feedback control loop to regulate and stabilize the output. As such, they are not low impedance inputs and must be treated with care in PC board layouts. Sense lines on the PCB should run adjacent to DC signals, preferably Ground. In cables and discrete wiring, use twisted pair, shielded tubing or similar techniques. Where, ' _VNOM − VOUT) / VNOM _ VNOM is the nominal, untrimmed output voltage. VOUT is the desired new output voltage. Do not exceed the specified trim range or maximum power ratings when adjusting trim. Use 1% precision resistors mounted close to the converter on short leads. Any long, distributed wiring and/or significant inductance introduced into the Sense control loop can adversely affect overall system stability. If in doubt, test Contact and PCB resistance losses due to IR drops +Vin +Vout +Vin +Vout I OUT +SENSE ON/OFF CONTROL +SENSE Sense Current TRIM LOAD RTRIM UP –SENSE –Vin ON/OFF CONTROL TRIM LOAD Sense Return −SENSE –Vout I OUT Return Figure 4. Trim Connections To Increase Output Voltages Using Fixed Resistors –Vin -Vout Contact and PCB resistance losses due to IR drops Figure 6. Remote Sense Circuit Configuration www.murata-ps.com/support MDC_PAE Series.A01 Page 15 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range your applications by observing the converter’s output transient response during step loads. There should not be any appreciable ringing or oscillation. You may also adjust the output trim slightly to compensate for voltage loss in any external filter elements. Do not exceed maximum power ratings. +VCC Please observe Sense inputs tolerance to avoid improper operation: ON/OFF CONTROL [Vout(+) −Vout(-)] − [Sense(+) −Sense(-)] ≤ 10% of Vout Output overvoltage protection is monitored at the output voltage pin, not the Sense pin. Therefore excessive voltage differences between Vout and Sense together with trim adjustment of the output can cause the overvoltage protection circuit to activate and shut down the output. -Vin Power derating of the converter is based on the combination of maximum output current and the highest output voltage. Therefore the designer must ensure: Figure 7. Driving the On/Off Control Pin (suggested circuit) (Vout at pins) x (Iout) ≤ (Max. rated output power) Cold Wall Cooling Test Method (cold baseplate applications) Remote On/Off Control On the input side, a remote On/Off Control can be specified with either positive or negative logic as follows: Murata Power Solutions’ cold wall cooling test is implemented with the baseplate of the UUT (unit under test) mounted to the large aluminum block (see figure 8). Thermocouples are attached to the known hot spots on the UUT as well as the aluminum block and still air space. The environment chamber regulates the aluminum block and baseplate temperature at a fixed value up to 100°C. The still air chamber is manually regulated to 85°C by the attached heaters. Output load is applied to the UUT and it is monitored to ensure safe operating limits at all input voltages. Models are on (enabled) when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to –VIN. The device is off (disabled) when the On/Off is left open or is pulled high to +13.5VDC Max. with respect to –VIN. Dynamic control of the On/Off function should be able to sink the specified signal current when brought low and withstand specified voltage when brought high. Be aware too that there is a finite time in milliseconds (see Specifications) between the time of On/Off Control activation and stable, regulated output. This time will vary slightly with output load type and current and input conditions. There are two CAUTIONs for the On/Off Control: CAUTION: While it is possible to control the On/Off with external logic if you carefully observe the voltage levels, the preferred circuit is either an open drain/open collector transistor or a relay (which can thereupon be controlled by logic). The On/Off prefers to be set at approx. +13.5V (open pin) for the ON state, assuming positive logic. Thermal insulation Still air chamber thermocouple Still air chamber Unit under test Still air chamber heater Environment chamber Still air chamber heater Thermocouple Aluminum block CAUTION: Do not apply voltages to the On/Off pin when there is no input power voltage. Otherwise the converter may be permanently damaged. Figure 8. Cold Wall Test Fixture Equipment www.murata-ps.com/support MDC_PAE Series.A01 Page 16 of 17 PAE Series Up to 100W 29.8V Nom Output Eighth-Brick Isolated DC-DC Converter with 2:1 Wide Input Range Vertical Wind Tunnel IR Transparent optical window Variable speed fan Unit under test (UUT) Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airflow and heat dissipation analysis of power products. The system includes a precision low flow-rate anemometer, variable speed fan, power supply input and load controls, temperature gauges, and adjustable heating element. The IR camera monitors the thermal performance of the Unit Under Test (UUT) under static steady-state conditions. A special optical port is used which is transparent to infrared wavelengths. IR Video Camera Heating element Precision low-rate anemometer 3” below UUT Both through-hole and surface mount converters are soldered down to a 10" by 10" host carrier board for realistic heat absorption and spreading. Both longitudinal and transverse airflow studies are possible by rotation of this carrier board since there are often significant differences in the heat dissipation in the two airflow directions. The combination of adjustable airflow, adjustable ambient heat, and adjustable Input/Output currents and voltages mean that a very wide range of measurement conditions can be studied. The collimator reduces the amount of turbulence adjacent to the UUT by minimizing airflow turbulence. Such turbulence influences the effective heat transfer characteristics and gives false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven overheating. Ambient temperature sensor Airflow collimator Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges, and no-contact IR camera mean that power supplies are tested in real-world conditions. Figure 9. Vertical Wind Tunnel Soldering Guidelines Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications 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 Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2013 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_PAE Series.A01 Page 17 of 17