OKI-T36W-W40

www.murata-ps.com PRODUCT OVERVIEW OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC/DC Converters 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 Typic Typical unit 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. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Non-isolated SMT PoL DC/DC power module 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 Over temperature and over current protection On/Off control, positive or negative polarity UL/EN/IEC 60950-1 safety (pending) Industry-standard (DOSA) surface-mount package RoHS-6 hazardous substance compliance Contents Description, Connection Diagram, Photograph Ordering Guide, Model Numbering, Product Labeling Mechanical Specifications, Input/Output Pinout Detailed Electrical Specifications Output Voltage Adjustment, Soldering Guidelines Application Notes Performance Data and Oscillograms Page 1 2 3 4 5 6 9 Connection Diagram +Vin F1 +Vout On/Off Control Controller External DC Power Source Trim Open = On Closed = Off ( Positive On/Off) Common Figure 1. OKI-T/36W-W40 Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specifications. Reference and Error Amplifier Common 　 For full details go to www.murata-ps.com/rohs www.murata-ps.com 09 Feb 2011 email: sales@murata-ps.com MDC_OKI-T/36W-W40.A01 Page 1 of 12 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC/DC Converters Performance Specifications and Ordering Guide ORDERING GUIDE Output VOUT (Volts) R/N (mVp-p) ➅ Regulation (Max.) IOUT (Amps Power max) (Watts) Max. Line Load 3 Input VIN Nom. (Volts) 24 Package Root Model Range (Volts) 19-40 19-40 Efficiency ➄ IIN, ➃ IIN, ➃ no load full load (mA) (Amps) Min. Typ. 80 1.58 93% 95% Case C72 ➀ 0.47 x 0.82 x 0.34 (11.9 x 20.8 x 8.6) 0.47 x 0.82 x 0.34 (11.9 x 20.8 x 8.6) Pinout P78 P78 OKI-T/36W-W40P-C 5.021-15.5 OKI-T/36W-W40N-C 5.021-15.5 ➀ Dimensions are in inches (mm). ➁ Remote on/off polarity is negative. 36 36 50 50 ±0.3 ±0.3 ±0.25 ±0.25 3 24 80 1.58 93% 95% 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. 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 Okami Non-isolated PoL I - T / 36W - W40 N - C 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 Surface Mount Trimmable Output Voltage Range 5.021-15.5V Input Voltage Range 19-40V Maximum Rated Output Power in Watts 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 OKI-T/36W-W40P-C OKI-T/36W-W40N-C Product Code IW1136 IW0136 The manufacturing date code is four characters: Mfg. date code XXXXXX YMDX Rev. Product code 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 09 Feb 2011 email: sales@murata-ps.com MDC_OKI-T/36W-W40.A01 Page 2 of 12 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC/DC Converters MECHANICAL SPECIFICATIONS TOP VIEW PIN #1 THIS CORNER (FARSIDE) 11.9 0.47 NOZZLE PICKUP POINT 10.67 0.420 REF 20.8 0.82 ISOMETRIC VIEW 5.64 0.222 REF PIN #1 INPUT/OUTPUT CONNECTIONS OKI-T/36W-W40 SIDE VIEW 8.64 0.34 END VIEW Pin 1 2 3 4 5 Function On/Off Control* +VIN Ground (Common) Trim +VOUT MTG PLANE 1.59 0.063 *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity Dimensions are in inches (mm shown for ref. only). Third Angle Projection BOTTOM VIEW 1.59 0.063 TYP 2.29 0.090 TYP 1.5 0.06 Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 1˚ Components are shown for reference only. 3 4 5 8.64 0.340 1.8 0.07 1 2 0.25 0.010 8.64 0.340 12.69 0.500 17.52 0.690 [1.8] 0.070 REF [1.52] 0.060 REF [2.41] 0.095 MIN [2.79] 0.110 MAX [20.8] 0.82 REF [3.05] 0.120 MIN [3.43] 0.135 MAX 4.57 0.180 [8.64] 0.340 [11.9] 0.47 REF [4.57] 0.180 [8.64] 0.340 [12.69] 0.500 [17.52] 0.690 [1.52] 0.06 REF MATERIAL: SMT PINS: COPPER ALLOY FINISH: (ALL PINS) GOLD (5u"MIN) OVER NICKEL (50u" MIN) Figure 2. OKI-T/36W-W40 Mechanical Outline RECOMMENDED PAD LAYOUT www.murata-ps.com 09 Feb 2011 email: sales@murata-ps.com MDC_OKI-T/36W-W40.A01 Page 3 of 12 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC/DC Converters Performance and Functional Specifications See Note 1 Input Environmental 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 Input Current: Full Load Conditions Inrush Transient Shutdown Mode (Off, UV, OT) Output in Short Circuit Low Line (Vin=Vmin) Remote On/Off Control (Note 5) Negative Logic (“N” model suffix) Current Positive Logic (“P” model suffix) 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. See Ordering Guide 0.4 A2Sec. 5 mA 60 mA 2.0A. (Vout = 15V) 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. Calculated MTBF Telecordia method (4a) Calculated MTBF MIL-HDBK-217N2 method (4b) Operating Temperature Range (Ambient) See derating curves Operating PC Board Temperature Storage Temperature Range Thermal Protection/Shutdown Relative Humidity TBD TBD -40 to +85 ˚C. with derating (Note 9) -40 to +100 ˚Celsius max., no derating (12) -55 to +125 deg. C. +130 ˚Celsius to 85%/+85 ˚C., non-condensing Physical Outline Dimensions Weight Safety Restriction of Hazardous Substances MSL Rating See Mechanical Specifications 0.072 ounces (2.04 grams) Designed to meet 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) 2 Absolute Maximum Ratings Current 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 Maximum Capacitive Loading (Note 14) Cap-ESR=0.001 to 0.01 Ohms Cap-ESR >0.01 Ohms Current Limit Inception (Note 6) (98% of Vout setting, after warm up) Short Circuit Mode Short Circuit Current Output Protection Method Short Circuit Duration Prebias Startup 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 1,000 μF 3,000 μF (min. cap. load 0 μF) 4.5 Amps 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. (1) Input Voltage (Continuous or transient) On/Off Control Input Reverse Polarity Protection Output Current (Note 7) 0 V.to +40 Volts max. 0 V. min. to +Vin max. None. Install external fuse. 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. Specification Notes: 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) (3) 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. 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. Dynamic Characteristics (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. 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 8 mSec for Vout=nominal (Vin On) 8 mSec for Vout=nominal (Remote On/Off) 300 KHz www.murata-ps.com 09 Feb 2011 email: sales@murata-ps.com MDC_OKI-T/36W-W40.A01 Page 4 of 12 OKI-T/36W-W40 Series Selectable Output 36-Watt DOSA-SMT DC/DC Converters Specification Notes, Cont.: (5) 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. Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting. Deleted. 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. All models are fully operational and meet published specifications, including “cold start” at –40˚ C. 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. (6) (7) (8) (9) Reflow Solder Operations for surface-mount products (SMT) (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) Other input or output voltage ranges will be reviewed under scheduled quantity special order. (12) Maximum PC board temperature is measured with the sensor in the center of the converter. (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. (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. (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. For Sn/Ag/Cu based solders: Preheat Temperature Time over Liquidus Maximum Peak Temperature Cooling Rate For Sn/Pb based solders: Preheat Temperature Time over Liquidus Maximum Peak Temperature Cooling Rate Less than 1 ºC. per second 60 to 75 seconds 235 ºC. Less than 3 ºC. per second Less than 1 ºC. per second 45 to 75 seconds 260 ºC. Less than 3 ºC. per second Recommended Lead-free Solder Reflow Profile 250 Peak Temp. 235-260° C Temperature (°C) 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. 200 150 Soaking Zone 120 sec max 100