OBS SERIES 25 WATT Powering Communications and Technology Trim And Enable Pins Fixed Frequency 1500V Isolation 6-Sided Shielding Efficiency vs. Load (24V Input) 95 90 EFFICIENCY % FEATURES • Industry standard package • • 24 and 48V input versions • • 25W output power • 100°C baseplate operation • • DESCRIPTION OBS single output DC/DC converters provide up to 25 Watts of output power in an industry standard package and footprint. The OBS units feature excellent efficiency, sixsided shielding, and fixed switching frequency. With 100°C case operation, the OBS converters are especially suited to telecom, networking, and industrial applications. These units are 100% surface-mount construction and fully compatible with production board washing processes. TECHNICAL SPECIFICATIONS Input Voltage Range 24 VDC Nominal 48 VDC Nominal Reflected Ripple Input Reverse Voltage Protection 18 - 36 VDC 34 - 75 VDC 25 mA Shunt Diode 85 80 EFF. OBS025YG 75 EFF. OBS025YH EFF. OBS025YJ 70 65 10 20 30 40 50 60 70 80 90 100 LO AD % Output High Density - Board Mounted Power Division OVP ±1% 0.2% Vout 0.5% Vout 10 % Iout Rated 25% Iout 4% Vout 500 µs ±10% Iout Rated Hiccup 110 - 140% 115 - 140%Vout Nom. Hiccup Efficiency vs. Load (48V Input) 95 90 85 EFFICIENCY % Setpoint Accuracy Line Regulation Vin Min - Vin Max., Iout Rated Load Regulation Iout Min. - Iout Max., Vin Nom. Minimum Output Current Dynamic Regulation, Loadstep Pk Deviation Settling Time Voltage Trim Range Short Circuit / Overcurrent Protection Current Limit Threshold Range, % of Iout Rated OVP Trip Range 80 75 EFF. OBS017ZE 70 EFF. OBS025ZG 65 EFF. OBS025ZH 60 55 General Turn-On Time: 24 & 48Vin Remote Shutdown Remote Shutdown Reference Switching Frequency Isolation Input - Output Input - Case (24 Vin units) Output - Case (48 V in units) Temperature Coefficient Case Temperature Operating Range Storage Range Humidity Max., Non-Condensing Vibration, 3 Axes, 5 Min Each MTBF† (Bellcore TR-NWT-000332) Safety Weight (Approx.) 10 ms Positive Vin Negative 400 kHz 1500 VDC 500 VDC 500 VDC 0.03%/°C -40 to +100°C -40 to +125°C 95% 5 g, 10 - 55 Hz 1.8 x 106 hrs UL, cUL, TUV 1.9 oz 1 10 20 30 40 50 60 70 80 90 LOAD % Notes † MTBF predictions may vary slightly from model to model. Specifications typically at 25°C, normal line, and full load, unless otherwise stated. Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with commercial wave-soldering equipment. Units are water-washable and fully compatible with commercial spray or immersion post wave-solder washing equipment. 100 OBS SERIES 25 WATT Powering Communications and Technology MODELS - (See the last page of Section for options.) Selection Chart Model Vin (Volts) Vin Range (Volts) Iin Max.* (Amps) Vout (Volts) Iout Rated (Amps) Ripple & Noise Pk-Pk (mV) Efficiency Typ. ** OBS025YH OBS025YJ OBS017ZE OBS025ZG OBS025ZH OBS025ZJ 24 24 48 48 48 48 18 - 36 18 - 36 34 - 75 34 - 75 34 - 75 34 - 75 1.90 1.90 0.60 0.94 0.92 0.92 12 15 3.3 5 12 15 2.1 1.7 5.0 5.0 2.1 1.7 120 150 75 75 120 150 88% 87% 81% 83% 88% 88% * Maximum input current at minimum input voltage, maximum rated output power. ** At nominal Vin, rated output. MECHANICAL DRAWING 0.18" MIN. 2.00" (50.8mm) 0.600"(15.2mm) 1 0.400"(10.2mm) 2 0.200"(5.1mm) 3 0 4 (4.6mm) 5 1.100"(27.9mm) 6 0.700"(17.8mm) DIA 0.040" (1.0mm) 2.00" BOTTOM VIEW (50.8mm) 7 0.300"(7.6mm) 8 -0.100"(-2.5mm) -0.50"(-12.7mm) 0 1.800" (45.7mm) Natural Convection 100 LFM 200 LFM 300 LFM 400 LFM 10.3 7.7 6.3 5.1 4.0 °C/W °C/W °C/W °C/W °C/W Note: Thermal impedance data is dependent on many environmental factors. The exact thermal performance should be validated for specific application. Function 1 +Vin 2 -Vin 3 No Conn. 4 Enable 5 No Pin 6 +Vout 7 -Vout 8 Trim 2 Tolerances Inches: .XX ± 0.020 .XXX ± 0.010 Pin: ± 0.002 Case: + 0.04, - 0.00 (Millimeters) .X ± 0.5 .XX ± 0.25 ± 0.05 + 1.0, - 0.00 (Dimensions as listed unless otherwise specified.) High Density - Board Mounted Power Division Pin Thermal Impedance 0.42" (10.7mm) -0.10" (-2.5mm) OPTIONS Powering Communications and Technology When ordering equipment options, use the following suffix information. Select the option(s) that you prefer and add them to the model number. Example ordering options are located below the options table. OPTIONS SUFFIX APPLICABLE SERIES Negative Logic N HAS, HBD, HBS, HES, HLS, LES, QBS, QES, QLS, TES, TQD Lucent Compatible Trim T HAS, HBD, HBS, HES, HLS, QBS, QES, QLS Terminal Strip TS XWS, XWD, XWT REMARKS TTL "Low" Turns Module ON TTL "High" Turns Module OFF Trim 1 IAS, LES Enable 2 IAD, IAS, LES, SMS Trim and Enable 3 IAS, LES Current Share 4 SMS Headerless PIN LENGTH AND HEATSINK OPTIONS Y Encapsulated EWS, IWS, OWS 0.110" (2.8mm) Pin Length 8 All Units (Except SMS) 0.150" (3.8mm) Pin Length 9 1H All Units (Except SMS) All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 1V All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 2H All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 2V All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 0.95" (24.1mm) Horizontal Heatsink 3H All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 0.95" (24.1mm) Vertical Heatsink 3V All Units (Except DIP, HLS, HLD, QLS, SIP, SM TLD, and TKD Packages) Includes Thermal Pad 0.24" (6.1mm) Horizontal Heatsink 0.24" (6.1mm) Vertical Heatsink 0.45" (11.4mm) Horizontal Heatsink 0.45" (11.4mm) Vertical Heatsink Standard Pin Length is 0.180" (4.6mm) NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. 3 High Density - Board Mounted Power Division Example Options: HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent compatible trim, and 0.95” vertical heatsink. LES015YJ-3N = LES015YJ with optional trim and enable, negative logic. QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110” pin length.