OKI-T/36W-W40N-C

OKI-T/36W-W40 Series www.murata-ps.com Selectable Output 36-Watt DOSA-SMT DC-DC Converters Typical unit FEATURES PRODUCT OVERVIEW „„ Non-isolated SMT PoL DC/DC power module The OKI-T/36W-W40 are non-isolated Point-ofLoad (PoL) DC/DC power converters for embedded applications. The module is fully compatible with Distributed-power Open Standards Alliance (DOSA) industry-standard specifications (www.dosapower .com). The wide input range is 19 to 40 Volts DC. Power output is 36 watts at Vout = 12Vdc. Based on fixedfrequency synchronous buck converter switching „„ 19-40Vdc input voltage range „„ Selectable output voltage 5.021-15.5Vdc „„ Up to 3 Amps output „„ Drives 1000 µF ceramic capacitive loads „„ High power conversion efficiency „„ Outstanding thermal derating performance topology, the high power conversion efficient Point of Load (POL) module features an On/Off control. These converters also include under voltage lock out (UVLO), output short circuit protection, overcurrent and over temperature protections. These units are designed to meet all standard UL/EN/IEC 60950-1 safety certifications and RoHS6 hazardous substance compliance. „„ Over temperature and over current protection „„ On/Off control, positive or negative polarity „„ UL/EN/IEC 60950-1 safety „„ Industry-standard (DOSA) surface-mount package „„ RoHS-6 hazardous substance compliance Connection Diagram +Vin F1 +Vout • Switching On/Off Control Controller • Filters • Current Sense External DC Power Source Trim Reference and Error Amplifier Open = On Closed = Off (Positive On/Off) Common Common Figure 1. OKI-T/36W-W40 Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specifications. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_OKI-T/36W-W40.B02  Page 1 of 11 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC-DC Converters Performance Specifications and Ordering Guide ORDERING GUIDE Output Root Model Vout (Volts) Input R/N (mVp-p) ➅ Regulation (Max.) Iout (Amps Power max) (Watts) Max. Line Load Vin Nom. (Volts) Package Iin, ➃ Iin, ➃ Efficiency ➄ no load full load (mA) (Amps) Min. Typ. Range (Volts) OKI-T/36W-W40P-C 5.021-15.5 3 36 50 ±0.3 ±0.25 24 19-40 80 1.58 93% 95% OKI-T/36W-W40N-C 5.021-15.5 3 36 50 ±0.3 ±0.25 24 19-40 80 1.58 93% 95% ➀ Dimensions are in inches (mm). ➁ Remote on/off polarity is negative. ➂ All specifications are at nominal line voltage, Vout = 5.021-15.5V and full load, +25 ˚C. unless otherwise noted. Output capacitors are 1 µF ceramic and 10 µF electrolytic in parallel. Input cap is 22 µF. See detailed specifications. I/O caps are necessary for our test equipment and may not be needed for your application. Case C72 ➀ Pinout 0.47 x 0.82 x 0.34 (11.9 x 20.8 x 8.5) 0.47 x 0.82 x 0.34 (11.9 x 20.8 x 8.5) P78 P78 ➃ Input current is shown at Vout = 15V. ➄ Efficiency is given at Vout = 15V. ➅ Ripple/Noise is shown at Vin = 24V, Vout = 5.021V. PART NUMBER STRUCTURE OK I - T / 36W - W40 N - C Okami Non-isolated PoL Surface Mount Trimmable Output Voltage Range 5.021-15.5V Maximum Rated Output Power in Watts RoHS Hazardous Substance Compliance C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder) On/Off Polarity P = Positive Polarity N = Negative Polarity Input Voltage Range 19-40V Note: Some model number combinations may not be available. Contact Murata Power Solutions for availability. Product Label Because of the small size of these products, the product label contains a character-reduced code to indicate the model number and manufacturing date code. Not all items on the label are always used. Please note that the label differs from the product photograph on page 1. Here is the layout of the label: Model Number Product Code OKI-T/36W-W40P-C IW1136 OKI-T/36W-W40N-C IW0136 The manufacturing date code is four characters: Mfg. date code XXXXXX Product code YMDX Rev. Revision level Figure 2. Label Artwork Layout First character – Last digit of manufacturing year, example 2009 Second character – Month code (1 through 9 and O through D) Third character – Day code (1 through 9 = 1 to 9, 10 = O and   11 through 31 = A through Z) Fourth character – Manufacturing information The label contains three rows of information: First row – Murata Power Solutions logo Second row – Model number product code (see table) Third row – Manufacturing date code and revision level www.murata-ps.com/support MDC_OKI-T/36W-W40.B02  Page 2 of 11 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC-DC Converters MECHANICAL SPECIFICATIONS TOP VIEW PIN #1 THIS CORNER (FARSIDE) 4.3 .17 11.9 .47 ISOMETRIC VIEW 8.4 .33 REF NOZZLE PICKUP POINT 20.8 .82 SIDE VIEW END VIEW PIN #1 8.5 .34 MTG PLANE 1.59 .063 2.29 .090 TYP 1.60 .063 TYP I/O CONNECTIONS BOTTOM VIEW 3 1.53 .060 5 4 1 [17.52] 0.690 4.57 .180 2 +Vin 3 Gnd (Common) 4 Trim 5 +Vout [1.52] 0.060 [12.69] 0.500 [8.64] 0.340 8.63 .340 REF [1.8] 0.070 [4.57] 0.180 12.69 .500 17.52 .690 On/Off Control * RECOMMENDED PAD LAYOUT 2 0.25 .010 Function 1 * The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity 1.78 .070 8.63 .340 Pin 2 1 [11.9] 0.47 REF REF 4 5 [3.03] 0.120 MIN [8.64] 0.340 3 [2.41] 0.095 MIN [3.43] 0.135 MAX [2.79] 0.110 MAX [20.8] 0.82 REF COMPONENTS SHOWN ARE FOR REFERENCE ONLY THIRD ANGLE PROJECTION DIMENSIONS ARE IN INCHES [mm] MATERIAL: SMT PINS: COPPER ALLOY TOLERANCES (Unless otherwise specified): FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN) ANGLES: .XX 0.02 [0.5] .XXX 0.010 [0.25] 1 www.murata-ps.com/support MDC_OKI-T/36W-W40.B02  Page 3 of 11 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC-DC Converters Performance and Functional Specifications See Note 1 Input Input Voltage Range Isolation Start-Up Voltage Undervoltage Shutdown (see Note 15) Overvoltage Shutdown Reflected (Back) Ripple Current (Note 2) Internal Input Filter Type Recommended External Fuse Reverse Polarity Protection See Ordering Guide. Not isolated 18.4 V 17 V min., 18.7V max. None 20 mA pk-pk Capacitive 5A fast blow None. Please install external fuse. Input Current: Full Load Conditions Inrush Transient Shutdown Mode (Off, UV, OT) Output in Short Circuit Low Line (Vin=Vmin) See Ordering Guide 0.4 A2Sec. 5 mA 60 mA 2.0A. (Vout = 15V) Remote On/Off Control (Note 5) Negative Logic (“N” model suffix) Current Positive Logic (“P” model suffix) Current ON = -0.3V to +1.2V OFF = (Vin -2.5V) to 40V or open 1 mA max. ON = Open pin (internally pulled up) or = (Vin -2.5V) to 40V or open OFF = -0.3V to +1.2V 1 mA max. Environmental 36W max. No minimum load ±2 % of Vset See Ordering Guide None ±0.02% per °C of Vout range See Ordering Guide and note 8 See Ordering Guide and note 10 See Ordering Guide Maximum Capacitive Loading (Note 14) Cap-ESR=0.001 to 0.01 Ohms Cap-ESR >0.01 Ohms 1,000 μF 3,000 μF (min. cap. load 0 μF) Current Limit Inception (Note 6) (98% of Vout setting, after warm up) 4.5 Amps Short Circuit Mode Short Circuit Current Output Protection Method Short Circuit Duration Prebias Startup 0.0 A Hiccup autorecovery upon overload removal. (Note 17) Continuous, no damage (output shorted to ground) Converter will start up if the external output voltage is less than Vnominal. Dynamic Characteristics Dynamic Load Response TBDμSec max. to within ±2% of final value (50-100 load step, di/dt=1A/μSec, 5 Vout, Cout = 1&10µF ceramic) Start-Up Time (Vin on or On/Off to Vout regulated) Switching Frequency TBD Operating Temperature Range (Ambient) See derating curves Operating PC Board Temperature Storage Temperature Range Thermal Protection/Shutdown -40 to +85 ˚C. with derating (Note 9) -40 to +100 ˚Celsius max., no derating (12) -55 to +125 deg. C. +130 ˚Celsius Relative Humidity to 85%/+85 ˚C., non-condensing TBD Physical Outline Dimensions Weight Safety Restriction of Hazardous Substances See Mechanical Specifications 0.072 ounces (2.04 grams) Meets UL/cUL 60950-1, CSAC22.2 No. 60950-1, IEC/EN 60950-1 RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder) MSL Rating 2 Absolute Maximum Ratings Input Voltage (Continuous or transient) 0 V.to +40 Volts max. On/Off Control 0 V. min. to +Vin max. Input Reverse Polarity Protection None. Install external fuse. Output Current (Note 7) Current-limited. Devices can withstand a sustained short circuit without damage. The outputs are not intended to accept appreciable reverse current. Storage Temperature -55 to +125 ˚C. Lead Temperature See soldering specifications Absolute maximums are stress ratings. Exposure of devices to greater than any of 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. Output Output Power Minimum Loading Accuracy (50% load, untrimmed) Voltage Output Range (Note 13) Overvoltage Protection (Note 16) Temperature Coefficient Ripple/Noise (20 MHz bandwidth) Line/Load Regulation Efficiency Calculated MTBF Telecordia method (4a) Calculated MTBF MIL-HDBK-217N2 method (4b) Specification Notes: (1) Specifications are typical at +25 °C, Vin=nominal (+24V.), Vout=nominal (+12V), full load, external caps and natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced airflow. All models are tested and specified with external 1 μF paralleled with 10μF ceramic/tantalum output capacitors and a 22 μF external input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test equipment and may not be required to achieve specified performance in your applications. However, Murata Power Solutions recommends installation of these capacitors. All models are stable and regulate within spec under no-load conditions. (2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x 100 μF tantalum, Cbus=1000 μF electrolytic, Lbus=1 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. (4a) 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. (4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full output load, natural convection. 8 mSec for Vout=nominal (Vin On) 8 mSec for Vout=nominal (Remote On/Off) 300 KHz www.murata-ps.com/support MDC_OKI-T/36W-W40.B02  Page 4 of 11 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC-DC Converters Specification Notes, Cont.: (5) Soldering Guidelines The On/Off Control Input should use either a switch or an open collector/open drain transistor referenced to -Input Common. A logic gate may also be used by applying appropriate external voltages which do not exceed +Vin. (6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting. (7) Deleted. (8) Output noise may be further reduced by adding an external filter. 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. 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. Reflow Solder Operations for surface-mount products (SMT) (9) All models are fully operational and meet published specifications, including “cold start” at –40˚ 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. For Sn/Ag/Cu based solders: (11) Other input or output voltage ranges will be reviewed under scheduled quantity special order. Preheat Temperature Less than 1 ºC. per second (12) Maximum PC board temperature is measured with the sensor in the center of the converter. Time over Liquidus 45 to 75 seconds Maximum Peak Temperature 260 ºC. Cooling Rate Less than 3 ºC. per second (13) Do not exceed maximum power specifications when adjusting the output trim. (14) The maximum output capacitive loads depend on the the Equivalent Series Resistance (ESR) of the external output capacitor and, to a lesser extent, the distance and series impedance to the load. Larger caps will reduce output noise but may change the transient response. Newer ceramic caps with very low ESR may require lower capacitor values to avoid instability. Thoroughly test your capacitors in the application. Please refer to the Output Capacitive Load Application Note. For Sn/Pb based solders: (15) Do not allow the input voltage to degrade lower than the input undervoltage shutdown voltage at all times. Otherwise, you risk having the converter turn off. The undervoltage shutdown is not latching and will attempt to recover when the input is brought back into normal operating range. (16) The outputs are not intended to sink appreciable reverse current. Output Voltage Adustment The output voltage may be adjusted over a limited range by connecting an external trim resistor (Rtrim) between the Trim pin and Ground. The Rtrim resistor must be a 1/10 Watt precision metal film type, ±1% accuracy or better with low temperature coefficient, ±100 ppm/oC. or better. Mount the resistor close to the converter with very short leads or use a surface mount trim resistor. In the tables below, the calculated resistance is given. Do not exceed the specified limits of the output voltage or the converter’s maximum power rating when applying these resistors. Also, avoid high noise at the Trim input. However, to prevent instability, you should never connect any capacitors to Trim. Less than 1 ºC. per second Time over Liquidus 60 to 75 seconds Maximum Peak Temperature 235 ºC. Cooling Rate Less than 3 ºC. per second Recommended Lead-free Solder Reflow Profile Peak Temp. 235-260° C 250 200 Temperature (°C) (17) “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 pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers normal operation. Preheat Temperature Reflow Zone 150 Soaking Zone time above 217° C 45-75 sec 120 sec max 100