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| Product Data Sheet 1.5 WATT UNREGULATED DC/DC CONVERTERS DC/DC CONVERTER PWR1726A/PWR1726A1 FEATURES * * * * * * * * * * 8000V ISOLATION TEST VOLTAGE NO EXTERNAL PARTS REQUIRED SYNCHRONIZABLE REMOTE ON/OFF LOW-BARRIER CAPACITANCE APPLICATIONS BIOMEDICAL DATA ACQUISITION INDUSTRIAL PROCESS EQUIPMENT DATA ACQUISITION TEST EQUIPMENT PORTABLE EQUIPMENT DESCRIPTION The PWR1726A/PWR1726A1 is a single-channel, dualoutput DC/DC/ converter designed for those applications where high-isolation voltage and low-barrier capacitance are critical for system reliability and integrity. Calculated mean-time-to-failure (MTTF) is in excess of 100 years at an ambient temperature of +25C and at rated output power. The performance of the PWR1726A/ PWR1726A1 is not derated over its entire specified temperature range of -25C to +85C. Synchronization of the PWR1726A/PWR1726A1 may be accomplished simply by connecting the sync pin of one unit to the sync pin of another unit. In this manner, up to eight converters may be ganged together. The PWR1726A/PWR1726A1 provides a plus and minus output voltage that is approximately equal to the magnitude of the input voltage. The unit operates over an input voltage range of 7VDC to 16VDC. Each PWR1726A/PWR1726A1 isolation barrier is tested per the method set forth by UL544, VDE750, and CSA C22.2. Power Electronics Division, United States 3400 E Britannia Drive, Tucson, Arizona 85706 Phone: 800.547.2537 Fax: 520.770.9369 C&D Technologies, (NCL) Tanners Drive Blakelands North Milton Keynes MK14 5BU UK Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545 Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user's intended purpose and in user's specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerospace applications. PWR1726A / A1 4/2002 REV B Page 1 COMMON SPECIFICATIONS Specifications typical at TA = +25C, VIN = 15VDC, ILOAD = 50mA and in free-running mode unless otherwise noted. PARAMETER INPUT Rated Voltage Voltage Range Input Current CONDITIONS MIN TYP 12 7 ILOAD = 0 ILOAD = Rated Load Short Circuit ILOAD = Rated Load 30 145 115 15 16 165 MAX UNITS VDC VDC mA mA mA mAp-p Ripple Current ISOLATION Voltage Rated Continuous AC, 60Hz DC Test Voltage Resistance Capacitance Leakage Current OUTPUT Rated Voltage Voltage Range 60sec, 60Hz 3500 5000 8000 10 10 1 15 14.25 16.0 0 0 1.16 0.3 15 50 30 16.5 50 15.75 18.0 90 180 VISO = 240VAC, 60Hz 2 Vrms VDC Vpk G pF A VDC VDC VDC mA mA mA mV/mV %/mA mVp-p mVp-p Vp-p (referenced to common) ILOAD = Rated Load ILOAD Rated Load ILOAD = OmA Rated Current Balanced Loads Current Range Balanced Loads Single Ended Line Regulation 7VDC < VIN < 18VDC Load Regulation No Load < IOUT < 50mA Ripple Voltage BW = DC to 10MHz ILOAD = 0 ILOAD = Rated Load Sync Out (PWR1726-A1 only) Vin = 12VDC, Vout = Rated, Balanced GENERAL MTTF Calculated per MIL - HDBK - 217 Rev. E Ground, Benign 25 C Switching Frequency TEMPERATURE Specification Operation Storage -25 -40 -55 1.2 120 +25 +85 +100 +110 MHr kHz C C C NOTE: Other input and output voltages may be available upon request. Please consult the factory. MECHANICAL TOP VIEW SIDE VIEW 0.4050.010" (10.29) NOTES: All dimensions are in inches (millimeters). GRID: 0.100 inches (2.54 millimeters) PIN PLACEMENT TOLERANCE: 0.015" MATERIAL: Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance, wide operating temperature range, and good electrical properties under high humidity environments. The encapsulant and outer shell of the unit have UL94V-0 ratings. Lead material is brass with a solder plated surface to allow ease of solderability. 1.1250.015" (28.580.38) PWR1726A PWR1726A1 0.075" (1.904) 1.650.015" (41.910.38) 1 0.032.003" (.81.05) 1.300" (32.99) 4 1 5 16 0.100" (2.538) 0.130" (3.30) MIN 1 14 15 16 18 29 30 32 PIN CONNECTIONS -Vout -Vin SYNC +Vin REMOTE ON/OFF SYNC OUT (PWR1726A1) COMMON +Vout 32 0.075" (1.904) 30 29 1.200" (30.46) 18 0.200" (5.08) BOTTOM VIEW Page 2 0.900" (22.84) 0.1125" (.32) PWR1726A / A1 4/2002 REV B ABSOLUTE MAXIMUM RATINGS Input Voltage .........................................................................18VDC Output Short-Circuit Duration ................................................... Continuous Internal Power Dissipation ..................................................................... 2W Lead Temperature (soldering, 10 seconds max) ............................ +300C ORDERING INFORMATION PWR Device Family PWR indicates DC/DC converter Model Number Sync Out 1726A 1 TYPICAL PERFORMANCE CURVES TA=+250C, Rated Input Voltage, Rated Output Current unless otherwise noted OUTPUT VOLTAGE VS. OUTPUT CURRENT Output Voltage (VDC) Output Voltage (VDC) OUTPUT VOLTAGE VS. INPUT VOLTAGE Output Current (mA) Input Voltage (VDC) REMOTE ON/OFF CONTROL Remote On/Off (VDC) SYNCHRONIZATION INFORMATION The unit may be synchronized to an external clock. Recommended frequency is a minimum of 110KHz and a maximum of 250KHz. The sync signal must be a square wave pulse with a peak of 7.5V min to 12.0V max, the amplitude being referenced to -Vin. If no connection is made to "Remote ON/OFF" pin, the converter will operate normally. Input Voltage (VDC) PWR1726A / A1 4/2002 REV B Page 3 ENGINEERING NOTES Page 4 PWR1726A / A1 4/2002 REV B |
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