MURATA POWER SOLUTIONS USN-1.8/8-D5

® ® INNOVATION and EXC ELLE N C E Single Output USN D5 Models Non-Isolated, 5VIN, 1.8-3.3VOUT 8/10A DC/DC’s in SIP Packages DATEL’s new USN D5 Series SIP’s (single-in-line packages) are non-isolated Features DC/DC converters that accept a 5V input (4.5V to 5.5V input range) and deliver 1.8V, ■ Industry-standard SIP pinout 2.5V or 3.3V outputs at either 8 or 10 Amps. USN D5 SIP’s are designed to take on- ■ board 5V power and convert it, with the highest effi ciency in the smallest space, to any Shorter (2.0" vs. 2.5") package length lower voltage required by today’s current-hungry DSP’s, ASIC’s and CPLD’s. ■ 4.5-5.5V input range USN’s are ideal for true point-of-use power processing. They occupy a mere ■ 1.8/2.5/3.3V outputs @ 8 or 10 Amps 0.8 square inches of board space (2" length, 0.4" width, 0.53" height). Their fully ■ Non-isolated, fully synchronous, synchronous, fi xed-frequency (200kHz), buck topology delivers high effi ciency (91% 200kHz, buck topology for 3.3VOUT models), tight regulation (±0.1%/±0.5% line/load), stable no-load opera- ■ tion, and low output noise (25mVp-p for 1.5/1.8VOUT models). Superior performance vs. competitors: The fully functional USN’s feature input undervoltage shutdown, output overcur- • 8/10 Amps vs. 6 Amps rent detection, continuous short-circuit protection, a wide-range output-voltage trim • ±1% setpoint accuracy function, a remote on/off control pin, and an optional sense pin. • EfŢ ciencies to 91% USN’s are pin compatible with similar devices from Lucent/Tyco, Artesyn Tech- • Noise as low as 25mVp-p nologies and Power-One. USN’s, however, deliver more current (10A vs. 6A), from • Stable no-load operation a smaller package (2.0" vs. 2.5" long), with better accuracy (±1% max.), tighter • Wide-range trimmable output voltage regulation, less noise, and superior temperature performance. If a USN SIP is ■ Remote on/off control; Optional sense pin operated at only 6 Amps, for example, it can reliably operate up to +65°C (with 100lfm air fl ow). ■ Power-good pin and "Lucent-compatible" If your low-voltage, high-current requirements have made the use of ineffi cient on/off control available linear regulators impractical, take a look at one of DATEL’s easy-to-use, low-cost ■ EN60950 and UL1950 certiŢ ed USN SIP’s. All devices are UL1950/EN60950 certifi ed and EMC compliant. UL, CB ■ EMC compliant and EMC reports are available upon request. +OUTPUT +INPUT ➀ +SENSE (OPTIONAL) COMMON COMMON CURRENT SENSE 10kΩ ON/OFF PWM CONTROL REFERENCE & CONTROLLER ERROR AMP TRIM ➀ For devices with the sense-pin option ("R" sufŢ x), the feedback path is through the +Sense pin and not the Figure 1. SimpliŢ ed Schematic +Output pin. DATEL, Inc., Mansfi eld, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com USN Series NON-ISOLATED, 10-33W SIP DC/DC CONVERT ERS ➀ Performance SpeciŢ cations and Ordering Guide Output Input Package R/N (mVp-p) ➁ Regulation (Max.) EfŢ ciency VIN Nom. Range IIN ➃ VOUT IOUT (Case, Model (Volts) (Amps) Typ. Max. Line Load ➂ (Volts) (Volts) (mA) Min. Typ. Pinout) USN-1.8/8-D5 1.8 8 25 50 ±0.1% ±0.625% 5 4.5-5.5 50/3430 80% 84% B4, P50 USN-1.8/10-D5 1.8 10 25 50 ±0.1% ±0.625% 5 4.5-5.5 50/4190 80% 86% B4, P50 USN-2.5/8-D5 2.5 8 30 60 ±0.1% ±0.5% 5 4.5-5.5 50/4550 85% 88% B4, P50 USN-2.5/10-D5 2.5 10 30 60 ±0.1% ±0.5% 5 4.5-5.5 50/5620 85% 89% B4, P50 USN-3.3/8-D5 3.3 8 30 60 ±0.1% ±0.5% 5 4.5-5.5 50/5800 87% 91% B4, P50 USN-3.3/10-D5 3.3 10 30 60 ±0.1% ±0.5% 5 4.5-5.5 50/7250 87% 91% B4, P50 ➀ Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise ➁ Ripple/Noise (R/N) is tested/speciŢ ed over a 20MHz bandwidth. Output noise may be further noted. All models are tested and speciŢ ed with an external 220µF input capacitor with a reduced by installing additional external output capacitors. See I/O Filtering and Noise Reduction. 100mΩ ESR and a 1.28Arms ripple-current rating, as well as a 220µF output capacitor with a ➂ These devices have no minimum load requirements and will regulate under no-load conditions. 100mΩ ESR. See I/O Filtering and Noise Reduction for details. ➃ Nominal line voltage, no-load/full-load conditions. PART NUMBER STRUCTURE TEMPERATURE DERATING U SN - 1.8 / 10- D5 R Temperature Derating for 8 Amp Models VIN = Nominal 9 Output ConŢ guration: U = Unipolar 8 R SufŢ x: Remote Sense Non-Isolated SIP 7 (Pin 3 installed) Nominal Output Voltage: 6 1.8, 2.5 or 3.3 Volts Input Voltage Range: 5 D5 = 4.5 to 5.5 Volts (5V nominal) Maximum Rated Output 4 Current in Amps 3 Still Air 100lfm Air Flow 2 200lfm Air Flow MECHANICAL SPECIFICATIONS 300lfm Air Flow 1 0.40 0 (10.16) –40 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 2.00 0.24 (50.80) Ambient Temperature ( C) ˚ (6.10) Case B4 0.180 0.53 (4.57) 12 3 4 5 68 7 91011 (13.46) Temperature Derating for 10 Amp Models VIN = Nominal 0.025 12 (0.64) 0.05 0.05 (1.27) (1.27) 10 0.160 1.000 0.400 0.500 (4.06) (10.16) (25.40) (12.70) 4 EQ. SP. @ 5 EQ. SP. @ 8 0.100 (2.54) 0.100 (2.54) DIMENSIONS ARE IN INCHES (MM) I/O Connections 6 Pin Function P50* 1 +Output 4 Still Air 2 +Output 100lfm Air Flow 3 No Pin** 200lfm Air Flow 4 +Output 2 300lfm Air Flow * See Functional Options 5 Common in Technical Notes. 6 Common 0 ** Pin 3 (+Sense) installed 7 +Input –40 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 for "R" sufŢ x models. 8 +Input Ambient Temperature ( C) ˚ 9 No Pin 10 Trim 11 On/Off Control 2 Output Current (Amps) Output Current (Amps) USN Models NON-ISOLATED, 10-33W SIP DC/DC CONVERTERS Performance/Functional SpeciŢ cations Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. ➀ ➀ All models are tested and speciŢ ed with an external 220µF input capacitor with a 100mΩ Input ESR and a 1.28Arms ripple-current rating, as well as a 220µF output capacitor with a 100mΩ ESR rating. Input Voltage Range 4.5 to 5.5 Volts (5V nominal) ➁ See Technical Notes/Graphs for details. Input Current: ➂ The On/Off Control is designed to be driven with open-collector logic or the application of Normal Operating Conditions See Ordering Guide appropriate voltages (referenced to Common, pins 5 and 6). Applying a voltage to the On/Off Control pin (pin 11) when no input voltage is applied to the converter may cause Standby/Off Mode 50µA typical, 200µA maximum permanent damage. See Functional Options for NH020 compatible models. Input Ripple Current 50mAp-p ➃ All models are stable and regulate within spec under no-load conditions. ➄ Output noise may be further reduced with the installation of additional external output Input Filter Type Capacitive (66µF) capacitors. See I/O Filtering and Noise Reduction. Overvoltage Protection None ➅ If an output short circuit results in a latched shutdown, the converter will have to be re- started by cycling either the input voltage or the On/Off Control pin. Reverse-Polarity Protection None Undervoltage Shutdown 3.2-3.9 Volts Absolute Maximum Ratings On/Off Control ➁ ➂ On = open or 2.4V to +VIN, IIN max. <400µA Input Voltage: Off = 0-0.8V, IIN max. <600µA Continuous 7 Volts Output Transient (100msec) 8 Volts VOUT Accuracy (50% load) ±1% maximum On/Off Control Pin (pin 11) 7 Volts Minimum Loading ➃ No load Input Reverse-Polarity Protection None VOUT Trim Range ➁ +10%, –15% Output Overvoltage Protection None Ripple/Noise (20MHz BW) ➄ See Ordering Guide Output Current Current limited. Devices can withstand sustained output short Line/Load Regulation See Ordering Guide circuits without damage. EfŢ ciency ➁ See Ordering Guide Storage Temperature –40 to +105°C Overcurrent Detection and Lead Temperature (soldering, 10 sec.) +300°C Short-Circuit Protection: ➁ ➅ Current-Limiting Detection Point: These are stress ratings. Exposure of devices to any of these conditions may adversely 8 Amp Models 10-12 Amps affect long-term reliability. Proper operation under conditions other than those listed in the 10 Amp Models 13-15 Amps Performance/Functional SpeciŢ cations Table is not implied. Short-Circuit Detection Point <80% of rated output voltage SC Protection Technique Latched shutdown Dynamic Characteristics TECHNICAL NOTES Transient Response (50% load step) 50µsec to ±1.5% of Ţ nal value Start-Up Time: ➁ Return Current Paths VIN to VOUT 900µsec On/Off to VOUT 1msec The USN D5 SIP’s are non-isolated DC/DC converters. Their two Common pins (pins 5 and 6) are connected to each other internally (see Figure 1). To Switching Frequency 200kHz (±28kHz) the extent possible (with the intent of minimizing ground loops), input return Environmental current should be directed through pin 6 (also referred to –Input or Input MTBF: Bellcore, ground Ţ xed, full power, Return), and output return current should be directed through pin 5 (also 100lfm air ţ ow referred to as –Output or Output Return). Any on/off control signals applied 8A Outputs (+50°C air) 6 million hours 10A Outputs (+45°C air) 7 million hours to pin 11 (On/Off Control) should be referenced to Common (speciŢ cally pin 6). Operating Temperature: ➁ (Ambient, 100lfm air ţ ow) I/O Filtering and Noise Reduction Without Derating 8A/10A –40 to +45/50°C With Derating to +100°C (See Derating Curves) All models in the USN D5 Series are tested and speciŢ ed with external Storage Temperature –40 to +105°C 220µF input capacitors (100mΩ ESR, 1.28Arms ripple-current rating) and Physical external 220µF (100mΩ ESR) output capacitors. In critical applications, Dimensions 2" x 0.40" x 0.53" (50.8 x 10.2 x 13.5mm) input/output ripple/noise may be further reduced by installing additional, external I/O caps. Package Open-frame, single-in-line (SIP) Pin Dimensions/Material 0.025" (0.635mm) square bronze with External input capacitors serve primarily as energy-storage devices. They tin-lead plate over nickel underplate should be selected for bulk capacitance (at appropriate frequencies), low Weight 0.3 ounces (8.5gm) ESR, and high rms-ripple-current ratings. The switching nature of modern Flamability Rating UL94V-0 DC/DC converters requires that the dc input voltage source have low ac impedance, and highly inductive source impedances can affect system stability. Your speciŢ c system conŢ guration may necessitate additional considerations. 3 USN Series NON-ISOLATED, 10-33W SIP DC/DC CONVERT ERS Output ripple/noise (also referred to as periodic and random deviations or +INPUT PARD) can be reduced below speciŢ ed limits using Ţ ltering techniques, the simplest of which is the installation of additional external output capacitors. 10kΩ Output capacitors function as true Ţ lter elements and should be selected for bulk capacitance, low ESR, and appropriate frequency response. Any scope ON/OFF CONTROL measurements of PARD should be made directly at the DC/DC output pins with scope probe ground less than 0.5" in length. All external capacitors should have appropriate voltage ratings and be COMMON located as close to the converters as possible. Temperature variations for all relevant parameters should be taken into consideration. Figure 2. Driving the Standard On/Off Control Pin The most effective combination of external I/O capacitors will be a function of your line voltage and source impedance, as well as your particular load and layout conditions. Our Applications Engineers can recommend potential Dynamic control of the on/off function is best accomplished with a mechanical solutions and discuss the possibility of our modifying a given device’s internal relay or open-collector/open-drain drive circuit . The drive circuit should be Ţ ltering to meet your speciŢ c requirements. Contact our Applications Engi- able to sink appropriate current when activated and withstand appropriate neering Group for additional details. voltage when deactivated. Applying an external voltage to the On/Off Control pin when no input power Input Fusing is applied to the converter can cause permanent damage to the converter. USN D5 SIP Series DC/DC converters are not internally fused. Certain The on/off control function, however, is designed such that the converter can applications and or safety agencies may require the installation of fuses be disabled (control pin pulled low) while input power (system 5V power) is at the inputs of power conversion components. For DATEL USN D5 ramping up and then "released" once the input has stabilized. The time dura- SIP Series DC/DC's, you should use either slow-blow or normal-blow fuses tion between the point at which the converter is released and its fully loaded with values no greater than the following. output settles to within speciŢ ed accuracy can be found in the Performance/ Functional SpeciŢ cations Table. See Start-Up Time for more details. Model Fuse Value The USN D5 SIP Series converters are also available with a "Lucent compat- USN-1.8/8-D5 7.5 Amps ible" on/off control function. (Contact DATEL for model numbers and avail- USN-1.8/10-D5 9 Amps ability.) See Functional Options. USN-2.5/8-D5 10 Amps USN-2.5/10-D5 12 Amps +INPUT USN-3.3/8-D5 12.5 Amps USN-3.3/10-D5 15 Amps 2kΩ Input Overvoltage and Reverse-Polarity Protection ON/OFF CONTROL USN D5 SIP Series DC/DC converters do not incorporate either input over- 665Ω voltage or input reverse-polarity protection. Input voltages in excess of the listed absolute maximum ratings and input polarity reversals of longer than "instantaneous" duration can cause permanent damage to these devices. COMMON On/Off Control Figure 3. Driving the "Lucent Compatible" On/Off Control Pin The On/Off Control pin may be used for remote on/off operation. USN D5 SIP Series DC/DC converters are designed so that they are enabled when the Start-Up Time control pin is pulled high (+2.4V to +VIN applied) or left open (normal mode) and disabled when the control pin is pulled low (to less than +0.8V relative The VIN to VOUT Start-Up Time is the interval between the time at which a to Common). As shown in Figures 2 and 3, all models have internal 10kΩ ramping input voltage crosses the lower limit of the speciŢ ed input voltage pull-up resistors to VIN (+Input). range (4.5 Volts) and the fully loaded output voltage enters and remains within its speciŢ ed accuracy band. Actual measured times will vary with input source impedance, external input capacitance, and the slew rate and Ţ nal value of the input voltage as it appears to the converter. The On/Off to VOUT Start-Up Time assumes the converter is turned off via the Remote On/Off Control with the nominal input voltage already applied to the converter. The speciŢ cation deŢ nes the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its speciŢ ed accuracy band. See Typical Performance Curves for details 4 USN Models NON-ISOLATED, 10-33W SIP DC/DC CONVERTERS Output Overvoltage Protection +OUTPUT USN D5 SIP Series DC/DC converters do not incorporate output overvoltage Trim +INPUT protection. In the extremely rare situation in which the device’s feedback loop Down is broken, the output voltage may run to excessively high levels (VOUT = VIN). LOAD TRIM If it is absolutely imperative that you protect your load against any and all COMMON Trim Up possible overvoltage situations, voltage limiting circuitry must be provided COMMON external to the power converter. Output Overcurrent Detection Note: Install either a Ţ xed trim-up resistor or a Ţ xed trim-down resistor depending upon desired output voltage. Overloading the output of a power converter for an extended period of time will invariably cause internal component temperatures to exceed their Figure 5. Trim Connections Using Fixed Resistors maximum ratings and eventually lead to component failure. High-current- carrying components such as inductors, FET's and diodes are at the highest risk. USN D5 SIP Series DC/DC converters incorporate an output overcur- USN-1.8/8-D5, USN-1.8/10-D5 Trim Equations rent detection and shutdown function that serves to protect both the power 2.55(VO – 1.23) converter and its load. RT (kΩ) = – 2.21 DOWN 1.8 – VO When the output current exceeds its maximum rating by 20% (typical) to 35% (maximum), the internal overcurrent-detection circuit limits output current. If 3.14 the overload condition forces VOUT to fall below 80% of its rated value, the RT (kΩ) = – 2.21 UP VO – 1.8 short-circuit detection circuit will latch the DC/DC into an off state. The latched condition can be reset by cycling the input voltage to the converter or by cycling the On/Off Control pin. USN-2.5/8-D5, USN-2.5/10-D5 Trim Equations 5.677(VO – 1.23) Output Voltage Trimming – 4.42 RT (kΩ) = DOWN 2.5 – VO Allowable trim ranges for each model in the USN D5 SIP Series are +10%, –15%. Trimming is accomplished with either a trimpot or a single Ţ xed resis- 6.983 tor. The trimpot should be connected between +Output and Common with its – 4.42 RT (kΩ) = UP VO – 2.5 wiper connected to the Trim pin as shown in Figure 4 below. USN-3.3/8-D5, USN-3.3/10-D5 Trim Equations +OUTPUT 4.46(VO – 1.24) +INPUT – 1.74 RT (kΩ) = DOWN 20kΩ 3.3 – VO 5-10 TRIM LOAD Turns COMMON 5.512 – 1.74 RT (kΩ) = UP VO – 3.3 COMMON Note: Resistor values are in kΩ. Accuracy of adjustment is subject to Figure 4. Trim Connections Using a Trimpot tolerances of resistors and factory-adjusted, initial output accuracy. VO = desired output voltage. A trimpot can be used to determine the value of a single Ţ xed resistor which can then be connected, as shown in Figure 5, between the Trim pin and +Output to trim down the output voltage, or between the Trim pin and Functional Options Common to trim up the output voltage. Fixed resistors should have absolute USN Series SIP’s have been designed so that a “Power-Good” function can TCR’s less than 100ppm/°C to ensure stability. be installed on Pin 9 (Contact DATEL). Standard models do not have a pin The equations below can be used as starting points for selecting speciŢ c in the Pin 9 position. trim-resistor values. Recall that untrimmed devices are guaranteed to be ±1% Also, the standard polarity of the USN’s On/Off Control function (pin 11 open accurate. or pulled high = on) complies with industry standards. Nevertheless, it is not Adjustment beyond the speciŢ ed +10%, –15% adjustment range is not compatible with the on/off polarity of the Lucent/Tyco NH020 Series SIP’s recommended. (pin 9 open = off). Please contact DATEL if you would like us to modify devices to be Lucent compatible. 5 USN Series NON-ISOLATED, 10-33W SIP DC/DC CONVERT ERS Remote Sense Option Note: For "R-sufŢ x" models, the +Output and +Sense lines are not inter- nally connected to each other. Therefore, if the sense function is not used USN D5 SIP Series DC/DC converters offer an optional output sense function for remote regulation, the user must connect the +Sense (pin 3) to +Output on pin 3. The sense function enables point-of-use regulation for overcoming (pin 4) at the DC/DC converter pins. moderate IR drops in conductors and/or cabling. Since these are non-isolated devices whose inputs and outputs usually share the same ground plane, The sense function is capable of compensating for voltage drops between the sense is provided only for the +Output. +Output and +Sense pins that do not exceed 10% of VOUT. The remote sense line is part of the feedback control loop regulating the [VOUT(+) – Common] – [Sense(+) – Common] ≤ 10%VOUT DC/DC converter’s output. The sense line carries very little current and Power derating (output current limiting) is based on maximum output current consequently requires a minimal cross-sectional-area conductor. As such, it and voltage at the converter's output pins. Use of trim and sense functions is not a low-impedance point and must be treated with care in layout and can cause the output voltage to increase, thereby increasing output power cabling. Sense lines should be run adjacent to signals (preferably ground), beyond the USN's speciŢ ed rating. Therefore: and in cable and/or discrete-wiring applications, twisted-pair or similar tech- niques should be used. (VOUT at pins) x (IOUT) ≤ rated output power Typical Performance Curves USN-1.8/8-D5 Efficiency vs. Line and Load USN-1.8/10-D5 Efficiency vs. Line and Load 90 91.5 89 90.5 88 89.5 87 88.5 86 VIN = 4.5V 87.5 VIN = 5.0V 85 VIN = 4.5V VIN = 5.5V VIN = 5.0V 86.5 VIN = 5.5V 84 83 85.5 12 3 4 5 6 7 8 1 2 3 45678 9 10 Load Current (Amps) Load Current (Amps) USN-2.5/8-D5 Efficiency vs. Line and Load USN-2.5/10-D5 Efficiency vs. Line and Load 93 92.5 92 91.5 91 90.5 90 89.5 VIN = 4.5V 89 VIN = 5.0V VIN = 4.5V VIN = 5.5V VIN = 5.0V 88.5 VIN = 5.5V 88 87 87.5 1 1.8 2.6 3.3 4.1 4.9 5.7 6.4 7.2 8 1 2 3 45678 9 10 Load Current (Amps) Load Current (Amps) 6 Efficiency (%) Efficiency (%) Efficiency (%) Efficiency (%) USN Series NON-ISOLATED, 12-33W SIP DC/DC CONVERT ERS Typical Performance Curves USN-3.3/8-D5 Efficiency vs. Line and Load USN-3.3/10-D5 Efficiency vs. Line and Load 93.5 95 92.5 94 91.5 93 90.5 92 89.5 91 VIN = 4.5V VIN = 4.5V 88.5 VIN = 5.0V 90 VIN = 5.0V VIN = 5.5V VIN = 5.5V 87.5 89 86.5 88 1 1.8 2.6 3.3 4.1 4.9 5.7 6.4 7.2 8 1 2 3 45678 9 10 Load Current (Amps) Load Current (Amps) Typical Start-Up from Enable Typical Start-Up from VIN (VIN = nominal, Full-load, 220µF intput capacitor, 220µF output capacitor.) (VIN = nominal, Full-load, 220µF intput capacitor, 220µF output capacitor.) VIN ENABLE VOUT VOUT 400µsec/div 400µsec/div ® ® INNOVATION and EXC ELLE N C E ISO 9001 REGISTERED DS-0496B 6/02 DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 DATEL GmbH München, Germany Tel: 89-544334-0 Internet: www.datel.com Email: sales@datel.com DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025 DATEL 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. Specifi cations are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark. 7 Efficiency (%) Efficiency (%)