Rev A MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 Wide Input Voltage Range FEATURES DESCRIPTION ● SMT Technology ● High Power Density ● Efficiency up to 85% ● 1500VDC I/O Isolation ● Short Circuit Protection ● Remote ON/OFF Control ● MTBF > 1,000,000 Hours ● Industry Standard Pin-out ● 2:1 Wide Input Voltage Range ● EMI Complies with EN55022 Class A ● Operating Temperature: -40°C to +71°C The MSKW series of DC/DC converters provide a maximum of 5 watts in a “gull-wing” SMT package. These converters operate over 2:1 wide input voltage ranges of 9-18, 18-36, or 36-75VDC. 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 85%, remote ON/OFF, 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. SPECIFICATIONS: MSKW 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 12V nominal input models 24V nominal input models 48V nominal input models 12V nominal input models 24V nominal input models 48V nominal input models 12V nominal input models 24V nominal input models 48V nominal input models 12V nominal input models 24V nominal input models 48V nominal input models All models All models 9 18 36 7.5 14 30 6.5 13 28 -0.7 -0.7 -0.7 12 24 48 8 16 33 7 15 31 Max Unit INPUT (Vin) Input Voltage Range Start Voltage Under Voltage Shutdown Input Surge Voltage (1000ms) Reverse Polarity Input Current Input Filter Reflected Ripple Current Short Circuit Input Power OUTPUT (Vo) Output Voltage Output Voltage Accuracy Output Voltage Balance Load Regulation Line Regulation Output Power Output Current Ripple & Noise (20MHz) Ripple & Noise (20MHz) Ripple & Noise (20MHz) Transient Response Deviation Transient Recovery Time REMOTE ON/OFF CONTROL Supply On Supply Off Device Standby Input Current Control Input Current (ON) Control Input Current (OFF) Control Common PROTECTION Short Circuit Protection Over Power Protection Input Fuse Recommendation GENERAL Efficiency Switching Frequency Isolation Voltage Rated Isolation Voltage Test Isolation Resistance Isolation Capacitance Internal Power Dissipation Max. Capacitive Load All models See Rating Chart ±0.5 ±1.0 ±0.5 ±2.0 ±0.3 ±1.0 ±0.1 ±0.3 5 See Rating Chart 50 85 100 15 ±2 ±6 250 500 Dual Output, Balanced Loads Io = 20% to 100% Vin = min. to max. Over Line, Over Load, and Over Temperature 25% Load Step Change 25% Load Step Change Vin = min to max Vin = min to max 12V nominal input models 24V nominal input models 48V nominal input models Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 VDC VDC VDC VDC A mW % % % W mVpk-pk mVpk-pk mVrms % µs 2.5 to 5.5VDC or open circuit -0.7 0.8 VDC 10 mA -200 µA -300 µA Referenced to negative input 115 60 seconds Flash Test for 1 second 500VDC 100KHz, 1V 18 36 75 9 18 36 8 17 34 25 50 100 1 Pi Filter See Rating Chart 1000 3000 200 1500 1650 1000 continuous 140 165 1500mA slow-blow type 700mA slow-blow type 350mA slow-blow type See Rating Chart 260 350 650 750 2500 See Rating Chart % KHz VDC VDC MΩ pF mW MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 Wide Input Voltage Range Rev A SPECIFICATIONS (CONTINUED) 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 ENVIRONMENTAL Operating Temperature (Ambient) Operating Temperature (Case) Storage Temperature Lead Temperature Humidity Cooling Temperature Coefficient Moisture Sensitivity Level (MSL) Temperature MTBF Conducted EMI PHYSICAL Weight Min -40 -40 -40 1.5mm from case for 10 seconds IPC/JEDEC J-STD-20 MIL-HDBK-217F @ 25°C, Ground Benign Nom Max Unit +71 +90 +125 260 95 Free air convection ±0.01 ±0.02 Level 2 1000 °C °C °C °C % %/°C Khours EN55022 Class A 14 grams 1.31 x 0.81 x 0.40 inches 33.4 x 20.6 x 10.2 mm Non-conductive black plastic UL94V-0 Dimensions (L x W x H) Case Material Flammability OUTPUT VOLTAGE / CURRENT RATING CHARTS SINGLE OUTPUT MODELS Model Number MSKW12S33W4 MSKW12S5W5 MSKW12S12W5 MSKW12S15W5 MSKW24S33W4 MSKW24S5W5 MSKW24S12W5 MSKW24S15W5 MSKW48S33W4 MSKW48S5W5 MSKW48S12W5 MSKW48S15W5 Input Voltage 12 VDC (9 ~ 18 VDC) 24 VDC (18 ~ 36 VDC) 48 VDC (36 ~ 75 VDC) Output Voltage 3.3 VDC 5 VDC 12 VDC 15 VDC 3.3 VDC 5 VDC 12 VDC 15 VDC 3.3 VDC 5 VDC 12 VDC 15 VDC Output Current Min Max 120mA 1200mA 100mA 1000mA 41.7mA 417mA 33.3mA 333mA 120mA 1200mA 100mA 1000mA 41.7mA 417mA 33.3mA 333mA 120mA 1200mA 100mA 1000mA 41.7mA 417mA 33.3mA 333mA Input Current No Load Max Load 434mA 521mA 45mA 502mA 502mA 212mA 254mA 15mA 245mA 245mA 106mA 127mA 6mA 123mA 122mA Reflected Ripple Current 25mA 15mA 10mA Efficiency (Typ) Maximum Capacitive Load 76% 80% 83% 83% 78% 82% 85% 85% 78% 82% 85% 85% 680µF 680µF 680µF 680µF 680µF 680µF 680µF 680µF 680µF 680µF 680µF 680µF Efficiency (Typ) Maximum Capacitive Load 80% 83% 83% 82% 85% 85% 82% 85% 85% 100µF 100µF 100µF 100µF 100µF 100µF 100µF 100µF 100µF DUAL OUTPUT MODELS Model Number MSKW12D5W5 MSKW12D12W5 MSKW12D15W5 MSKW24D5W5 MSKW24D12W5 MSKW24D15W5 MSKW48D5W5 MSKW48D12W5 MSKW48D15W5 Input Voltage 12 VDC (9 ~ 18 VDC) 24 VDC (18 ~ 36 VDC) 48 VDC (36 ~ 75 VDC) Output Voltage ±5 VDC ±12 VDC ±15 VDC ±5 VDC ±12 VDC ±15 VDC ±5 VDC ±12 VDC ±15 VDC Output Current Min Max ±50mA ±500mA ±20.8mA ±208mA ±16.7mA ±167mA ±50mA ±500mA ±20.8mA ±208mA ±16.7mA ±167mA ±50mA ±500mA ±20.8mA ±208mA ±16.7mA ±167mA Input Current No Load Max Load 521mA 45mA 501mA 503mA 254mA 15mA 245mA 246mA 127mA 6mA 122mA 123mA Reflected Ripple Current 25mA 15mA 10mA 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 MSKW 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. Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 Rev A BLOCK DIAGRAMS Single Output Dual Output 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 MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 Wide Input Voltage Range MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 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 MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 Wide Input Voltage Range Rev A MECHANICAL DRAWING CONNECTING PIN PATTERNS Top View (2.54mm / 0.1 inch grids) Unit: mm [inches] 1. Tolerance: X.X±0.25 [X.XX±0.01] X.XX±0.13 [X.XXX±0.005] 2. Pin: ±0.05 [±0.002] PIN CONNECTIONS PIN Single Output Dual Output 1 Remote On/Off Remote On/Off 2 -Vin -Vin 3 -Vin -Vin 9 NC Common 10 NC NC 11 NC -Vout 12 NC NC 13 NC NC 14 +Vout +Vout 15 NC NC 16 -Vout Common 22 +Vin +Vin 23 +Vin +Vin 24 NC NC NC: No Connection Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 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 control 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. + +Vin + DC Power Source +Out DC / DC Converter Load Cin - -Vin -Out Maximum Capacitive Load The MSKW 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. For optimal performance we recommend 100µF maximum capacitive load for dual outputs and 680µF capacitive load for single outputs. 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. To Oscilloscope + Battery + +Vin Lin Cin Current Probe +Out DC / DC Converter -Vin Load -Out 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 MSKW Series 5 Watt DC/DC Converter Single and Dual Outputs 2:1 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. +Vin +Out Copper Strip Single Output DC / DC Converter -Vin Cout +Vin Resistive Scope Load -Out +Out Dual Output DC / DC Converter Com. -Vin -Out Copper Strip Cout Scope Cout Scope Resistive Load 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. + +Vin Single Output DC / DC Converter DC Power Source - + +Out -Vin +Vin DC Power Source Cout Load - -Out +Out Dual Output DC / DC Com. Converter -Vin -Out Cout Load 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. Position of air velocity probe and thermocouple 50mm / 2in 15mm / 0.6in Air Flow DUT 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: Toll Free: Fax: E-mail: Web: Address: (603)778-2300 (888)587-9255 (603)778-9797 [email protected] www.wallindustries.com 5 Watson Brook Rd. Exeter, NH 03833 Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797