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Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series

5 Watt DC/DC Converter

4:1 Ultra Wide Input Voltage Range Rev A

FEATURES

  • SMT Technology
  • High Power Density
  • Efficiency up to 83%
  • 1500VDC I/O Isolation
  • Short Circuit Protection
  • Remote ON/OFF Control
  • MTBF > 1,000,000 Hours
  • 4:1 Ultra Wide Input Voltage Range
  • EMI Complies with EN55022 Class A
  • Operating Temperature: -40°C to +71°C SPECIFICATIONS: MSKUW Series All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS Min Nom Max Unit INPUT (Vin) Input Voltage Range 24V nominal input models 9 24 36 VDC 48V nominal input models 18 48 75 Start Voltage 24V nominal input models 7 8 9 VDC 48V nominal input models 14 16 18 Under Voltage Shutdown 24V nominal input models 6 7 8 VDC 48V nominal input models 13 15 17 Input Surge Voltage (1000ms) 24V nominal input models -0.7 50 VDC 48V nominal input models -0.7 100 Reverse Polarity Input Current 1 A Input Filter Pi Filter Reflected Ripple Current See Rating Chart Short Circuit Input Power 1000 3000 mW OUTPUT (Vo) Output Voltage See Rating Chart Output Voltage Accuracy ±0.5 ±2.0 % Output Voltage Balance Dual Output, Balanced Loads ±0.5 ±3.0 % Load Regulation Io = 10% to 100% ±0.3 ±1.0 Line Regulation Vin = min. to max. ±0.2 ±1.0 % Output Power 5 W Output Current See Rating Chart Ripple & Noise (20MHz) 50 85 mVpk-pk Ripple & Noise (20MHz) Over Line, Over Load, and Over Temperature 100 mVpk-pk Ripple & Noise (20MHz) 15 mVrms Transient Response Deviation 25% Load Step Change ±2 ±6 % Transient Recovery Time 25% Load Step Change 250 500 μs REMOTE ON/OFF CONTROL Supply On 2.5 to 5.5VDC or open circuit Supply Off -0.7 0.8 VDC Device Standby Input Current 10 mA Control Input Current (ON) Vin = min to max -600 μA Control Input Current (OFF) Vin = min to max -700 μA Control Common Referenced to negative input PROTECTION Short Circuit Protection continuous Over Power Protection 115 % Input Fuse Recommendation 24V nominal input models 1500mA slow-blow type 48V nominal input models 750mA slow-blow type GENERAL Efficiency See Rating Chart Switching Frequency 340 KHz Isolation Voltage Rated 60 seconds 1500 VDC Isolation Voltage Test Flash Test for 1 second 1650 VDC Isolation Resistance 500VDC 1000 MΩ Isolation Capacitance 100KHz, 1V 650 750 pF Internal Power Dissipation 2500 mW Max. Capacitive Load See Rating Chart ENVIRONMENTAL Operating Temperature (Ambient) -40 +71 °C Operating Temperature (Case) -40 +90 °C Storage Temperature -40 +125 °C Lead Temperature 1.5mm from case for 10 seconds 260 °C Humidity 95 % Cooling Free air convection Temperature Coefficient ±0.01 ±0.02 %/°C MTBF MIL-HDBK-217F @ 25°C, Ground Benign 1000 Khours Conducted EMI EN55022 Class A PHYSICAL Weight 14 grams Case Material Non-conductive black plastic Flammability UL94V-0

DESCRIPTION

The MSKUW series of DC/DC converters provide a maximum of 5 watts in a “gull-wing” SMT package. These converters operate over 4:1 ultra wide input voltage ranges of 9-36 or 18-75VDC. This series also has single output voltages of 3.3, 5, 12, and 15VDC and dual output voltages of ±5, ±12, and ±15VDC. These converters have a typical full load efficiency of 83%, remote ON/OFF control, and continuous short circuit protection. The -40°C~+71°C operating temperature make these converters ideal for data communication equipment, mobile battery driven equipment, process/machine control equipment, telecommunication equipment, computer peripheral systems, distributed power systems, mixed analog/digital subsystems, and industrial robot systems. The EN55022 Class A conducted noise compliance minimizes design time, cost, and eliminates the need for external filter components.

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A OUTPUT VOLTAGE / CURRENT RATING CHARTS SINGLE OUTPUT MODELS Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current Efficiency (Typ) Maximum Capacitive Load Min Max No Load Max Load MSKW24S33UW4

24 VDC

(9 ~ 36 VDC)

3.3 VDC 120mA 1200mA

76% 2000μF MSKW24S5UW5 5 VDC 100mA 1000mA 260mA 80% 2000μF MSKW24S12UW5 12 VDC 41.7mA 417mA 251mA 83% 470μF MSKW24S15UW5 15 VDC 33.3mA 333mA 251mA 83% 330μF MSKW48S33UW4

48 VDC

(18 ~ 75 VDC) 76% 2000μF MSKW48S5UW5 5 VDC 100mA 1000mA 130mA 80% 2000μF MSKW48S12UW5 12 VDC 41.7mA 417mA 126mA 83% 470μF MSKW48S15UW5 15 VDC 33.3mA 333mA 125mA 83% 330μF DUAL OUTPUT MODELS Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current Efficiency (Typ) Maximum Capacitive Load Min Max No Load Max Load MSKW24D5UW5 (9 ~ 36 VDC) ±5 VDC ±50mA ±500mA 20mA 260mA 15mA 80% 680μF MSKW24D12UW5 ±12 VDC ±20.8mA ±208mA 251mA 83% 330μF MSKW24D15UW5 ±15 VDC ±16.7mA ±167mA 252mA 83% 220μF MSKW48D5UW5 (18 ~ 75 VDC) ±5 VDC ±50mA ±500mA 10mA 130mA 10mA 80% 680μF MSKW48D12UW5 ±12 VDC ±20.8mA ±208mA 125mA 83% 330μF MSKW48D15UW5 ±15 VDC ±16.7mA ±167mA 126mA 83% 220μF NOTES 1. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%. 2. The MSKUW series requires a minimum output loading to maintain specified regulations. Operation under no-load conditions will not damage these devices, however they may not meet all listed specifications. 3. All DC/DC converters should be externally fused at the front end for protection. 4. Other input and output voltages may be available, please contact factory. 5. It is not recommended to use the water-washing process on SMT units. *Due to advances in technology, specifications subject to change without notice. BLOCK DIAGRAMS Single Output Dual Output

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A INPUT VOLTAGE TRANSIENT RATING DERATING CURVE

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A Efficiency vs Input Voltage (Single Output) Efficiency vs Input Voltage (Dual Output) Efficiency vs Output Load (Single Output) Efficiency vs Output Load (Dual Output)

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A MECHANICAL DRAWING Unit: mm [inches] PIN CONNECTIONS PIN Single Output Dual Output

1 Remote On/Off Remote On/Off

9 NC Common

10 NC NC

11 NC -Vout

12 NC NC

13 NC NC

15 NC NC

24 NC NC

NC: No Connection X.XX±0.13 [X.XXX±0.005] CONNECTING PIN PATTERNS Top View (2.54mm / 0.1 inch grids)

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A DESIGN & FEATURE CONSIDERATONS Over Current Protection To provide protection in a fault (output over load) condition the unit is equipped with internal current limiting circuitry and can endure current limiting for an unlimited duration. At the point of current limit inception the unit shifts from voltage contr ol to current control. The unit operates normally once the output current is brought back to its specified range. Input Source / Remote On/Off Positive logic remote on/off turns the module ON during a logic high voltage on the remote on/off pin, and turns the module OFF during a logic low voltage on the remote on/off pin. To turn the power module ON and OFF, the user must supply a switch to control the voltage between the on/off terminal and the -Vin terminal. The switch can be an open collector or equivalent. A logic low is –0.7V to 0.8V. A logic high is 2.5V to 5.5V. The maximum sink current of the switch at the on/off terminal during a logic low is 300μA. The maximum sink current of the switch at the on/off terminal = 2.5 to 5.5V is 200μA or open. Input Source Impedance The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the power module. In applications where power is supplied over long lines and output loading is high, it may be necessary to use a capacitor at the input to ensure startup. A capacitor mounted close to the power module helps ensure stability of the unit, it is recommended to use a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100KHz) capacitor of 3.3μF for the 12V input models and a 2.2μF for the 24V and 48V input models. +Out -Out +Vin -Vin DC / DC Converter LoadDC Power Source Cin Maximum Capacitive Load The MSKUW series has a limit of maximum connected capacitance at the output. The power module may be operated in current limiting mode during start-up, affecting the ramp-up and the startup time. The maximum capacitance can be found in the Output Voltage / Current Rating Chart. TEST CONFIGURATIONS Input Reflected-Ripple Current Test Setup Input reflected-ripple current is measured with an inductor Lin (4.7μH) and Cin (220μF, ESR < 1.0Ω at 100KHz) to simulate source impedance. +Out -Out +Vin -Vin DC / DC Converter Load Battery + Lin+ Cin To Oscilloscope Current Probe Capacitor Cin offsets possible battery impedance. Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0 ~ 500KHz.

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKUW Series 4:1 Ultra Wide Input Voltage Range Rev A Peak-to-Peak Output Noise Measurement Test Use a Cout 0.47μF ceramic capacitor. Scope measurement should be made by using a BNC socket; measurement bandwidth is 0 ~ 20MHz. Position the load between 50mm and 75mm from the DC/DC Converter. +Out -Out +Vin -Vin Single Output DC / DC Converter Resistive LoadScope Copper Strip Cout +Out -Out +Vin -Vin Dual Output DC / DC Converter Resistive Load Scope Copper Strip Cout Com. ScopeCout Output Ripple Reduction A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 3.3μF capacitors at the output. +Out -Out +Vin -Vin Load DC Power Source Cout Single Output DC / DC Converter +Out -Out +Vin -Vin Load DC Power Source CoutCom. Dual Output DC / DC Converter Thermal Considerations Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below 90°C. The derating curves are determined from measurements obtained in an experimental apparatus. DUT Position of air velocity probe and thermocouple 50mm / 2in Air Flow 15mm / 0.6in COMPANY INFORMATION: Wall Industries, Inc. has created custom and modified units for over 40 years. Our in- house research and development engineers will provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001- 2000 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: (603)778-2300 Toll Free: (888)587-9255 E-mail: sales@wallindustries.com Web: www.wallindustries.com Address: 5 Watson Brook Rd. Exeter, NH 03833