2W, Low Cost DIP, Dual Output DC/DC s Key Features Low Cost 500 Isolation MTBF > 0,000 Hours mv P-P Ripple and Noise Input 12 Output {15 Temperature Performance -25] to +71] Short Circuit Protection UL 94V-0 Package Material Internal SMD Construction $ 500 Low Cost Low Noise I/O Isolation Absolute Maximum Ratings Environmental Specifications Input Surge Voltage ( 1000 ms ) Lead Temperature (1.5mm from case for 10 Sec.) Internal Power Dissipation 12 Input Models -0.7 260 3,000 mw Exceeding the absolute maximum ratings of the unit could cause damage. These are not continuous operating ratings. 15 ] Operating Temperature Operating Temperature Storage Temperature Humidity Cooling Conditions Ambient -25 +71 ] Case -25 +90 ] - +125 ] 95 Free-Air Convection 1
Model Guide Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current Efficiency @ @No @ ma ma ma (Typ.) ma (Typ.) ma (Typ.) (Typ.) S210RA 12 (10.8 ~ 13.2) {15 {66 0 2 30 59 Capacitive Models by Vout Maximum Capacitive # For each output {15V # 220 uf Input Fuse Selection Guide S210RA 700mA Slow - Blow Type Input Specifications Typ. Input Voltage Range 10.8 12 13.2 Reverse Polarity Input Current 0.5 A Short Circuit Input Power 2000 mw Input Filter Pi Filter 2
Output Specifications Output Voltage Accuracy Output Voltage Balance Line Regulation Regulation Ripple & Noise (20MHz) Ripple & Noise (20MHz) Ripple & Noise (20MHz) Temperature Coefficient Output Short Circuit Conditions Dual Output, Balanced s Vin= to Io=10 to 100 Over Line, & Temp. Continuous Typ. {2.0 {1.0 {0.2 {0.2 {0.01 {4.0 {3.0 {0.5 {0.5 50 75 15 {0.02 mv P-P mv P-P mv rms /] General Specifications Isolation Voltage Rated Isolation Voltage Test Isolation Resistance Isolation Capacitance Switching Frequency MTBF Conditions 60 Seconds Flash Tested for 1 Second 500 100KHz,1V MIL-HDBK-217F @ 25], Ground Benign 500 550 1000 0 Typ. 100 150 M[ pf KHz K Hours Notes: 1. Specifications typical at Ta=+25], resistive load, nominal input voltage, rated output current unless otherwise noted. 2. Ripple & Noise measurement bandwidth is 0-20 MHz. 3. All DC/DC converters should be externally fused at the front end for protection. 4. Other input and output voltage may be available, please contact factory. 5. Specifications subject to change without notice. Block Diagram Dual Output Positive Regulator +Vo LC Filter Bipolar Push-Pull Inverter Com. Negative Regulator -Vo 3
Efficiency () 70 60 50 Efficiency () 90 70 60 50 30 30 Low Nom Input Voltage (V) High 20 10 20 60 Current () 100 Efficiency vs Input Voltage Efficiency vs Output 100 100LFM 200LFM Output Power () 60 Natural convection 0LFM 20 0 ~ -25 50 60 70 90 100 110 Ambient Temperature ] Derating Curve 4
Test Configurations Input Reflected-Ripple Current Test Setup the 12V input devices and a 0.47uF for the 24V and 48V devices. Input reflected-ripple current is measured with a inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to simulate source impedance. Capacitor Cin, offsets possible battery impedance. Current ripple is measured at the input terminals of the module, measurement bandwidth is 0-500 KHz. + DC Power Source - + Cin To Oscilloscope Output Ripple Reduction + + Lin Battery Cin Current Probe A good quality low ESR capacitor placed as close as practicable across the load will give the best ripple and noise performance. To reduce output ripple, it is recommended to use 1.5uF capacitors at the output. Peak-to-Peak Output Noise Measurement Test Use a 0.33uF ceramic capacitor. Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20 MHz. Position the load between 50 mm and 75 mm from the DC/DC. + DC Power Source - Dual Output Com. Dual Output Com. Copper Strip Copper Strip Copper Strip Design & Feature Considerations Maximum Capacitive Scope Resistive Scope The S210RA has limitation 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 optimum performance we recommend 220uF maximum capacitive load for dual outputs and 470uF capacitive load for single outputs. The maximum capacitance can be found in the data sheet. 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 15mm / 0.6in 50mm / 2in Air Flow DUT 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. 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 < 1.0[ at 100 KHz) capacitor of a 2.2uF for the 5V input devices, a 1.0uF for 5
Mechanical Dimensions Physical Characteristics 31.8 [1.25] Case Size : 31.8*20.3*10.2 mm 1.25*0.*0. inches 3.8 [0.15] Side 10.2 [0.] Case Material : Black Coated Metal 2.54 [0.100] Bottom 2.0 [0.08] 1 2 3 10 11 12 24 23 22 0.50 [0.020] 15 14 13 15.22 [0.600] 2.5 [0.10] 20.3 [0.] Weight Flammability : 12.1g : UL94V-0 Tolerance Pin Millimeters X.X{0.25 X.XX{0.13 {0.05 Inches X.XX{0.01 X.XXX{0.005 {0.002 Pin Connections Pin 1 2 3 10 11 12 13 14 15 22 23 24 Function -Vout +Vout +Vout -Vout 6