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| 1 Watt SIP Single Series DC/DC Converters Features High Isolation, 3000 VDC Operating Range of 4.5 to 5.5 Volts Semi-Regulated 1 Watt Outputs * 5, 12, 15 and 6.5, 7, 14, 17, 24 Volt Outputs Simple Four Terminal Operation Small SIP package, Fits in 0.19 sq.in. of PCB Area Low Noise Operation 5 Year Warranty Description The CALEX SIP is specifically designed to provide nonstandard output voltages and isolation for 5 volt digital systems. The series provides semi-regulated outputs of 5, 6.5, 12, 15, and 24 volts for directly driving your circuits or 7, 14 and 17 volt outputs for driving three terminal regulators. The high efficiency operation of typically 74% for a 12 volt output means efficient use of your system power. Easy four terminal operation makes using the converter a snap. Just plug it in and you are ready to solve those nasty analog problems that arise when only 5 volt digital power is available in your system. Model 5S5.150SIP 5S6.145SIP 5S7.140SIP 5S12.080SIP 5S14.070SIP 5S15.065SIP 5S17.060SIP 5S24.040SIP Selection Chart Input Range VDC Min 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 Max 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 VDC 5.0 6.5 7.0 12.0 14.0 15.0 17.0 24.0 Output mA 150 145 140 80 70 65 60 40 Power W 3/4 1 1 1 1 1 1 1 1 Watt Sip Series Block Diagram A 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 1 3/2001, eco# 011007-1 1 Watt SIP Single Series DC/DC Converters Input Parameters* Model Voltage Range Reflected Ripple (1) Input Current Full Load No Load Efficiency Switching Frequency MIN MAX TYP TYP TYP TYP TYP 5S5.150SIP 5S6.145SIP 5S7.140SIP 5S12.080SIP 5S14.070SIP 5S15.065SIP 5S17.060SIP 5S24.040SIP Units 4.5 VDC 5.5 65 mA P-P 243 20 74 350 248 20 74 250 20 75 257 20 75 253 28 75 mA % kHz 50 207 20 69 65 255 20 69 261 20 70 Output Parameters* Model Output Voltage Output Voltage Accuracy (2) Output Voltage, No Load Rated Load Range Load Regulation (3) 75% - 20% Load 75% - 100% Load Line Regulation (4) MIN TYP MAX TYP MIN MAX TYP TYP TYP 65 400 Momentary 5S5.150SIP 5 4.75 5.00 5.25 7 0 150 5S6.145SIP 6.5 6.175 6.500 6.825 9 0 145 5S7.140SIP 7 6.65 7.00 7.35 10 0 140 5S12.080SIP 12 11.40 12.00 12.60 16 0 80 +8 -5 1.2 40 5S14.070SIP 14 13.30 14.00 14.70 19 0 70 5S15.065SIP 15 14.25 15.00 15.75 21 0 65 5S17.060SIP 17 16.15 17.00 17.85 24 0 60 5S24.040SIP 24 22.8 24.0 25.2 31 0 40 Units VDC VDC VDC mA % %/% mV P-P ppm/C Noise, Peak - Peak (1) TYP Temperature TYP Coefficient Short Circuit Protection to Common (5) NOTES * (1) All parameters measured at Tc = 25C, 5.00V input voltage, full rated load and a 10F solid tantalum capacitor connected across the input and output pins, unless otherwise noted. Refer to the CALEX Application Notes for the definition of terms, measurement and other information. Noise is measured per CALEX Application Notes. Measurement bandwidth is 20 MHz. Input Reflected Ripple and output noise are measured with a 10F tantalum capacitor connected across the input and output pins. (2) (3) (4) (5) (6) (7) (8) General Information The 1 Watt SIP series provides isolated semi-regulated outputs of 5, 6.5, 7, 12, 14, 15, 17, and 24 VDC. The high efficiency low noise push-pull design operates at 350 kHz which reduces to a minimum your external filter requirements. The converter is packaged in a non-conductive plastic case and can be water washed after assembled to your main PC board. Output Voltage Accuracy measured at 75% of maximum Rated Load. Load Regulations measured relative to 75% of maximum Rated Load Current. See Output Voltage vs. Output Load Curves. Line Regulation is for a 1.0% change in Input Voltage. Use input fuse for protection. See Applying the Input. The case Thermal Impedance is specified as the case temperature rise over ambient per package watt dissipated. Specifications subject to change without notice. Water Washability - Calex DC/DC converters are designed to withstand most solder/wash processes. Careful attention should be used when assessing the applicability in your specific manufacturing process. Converters are not hermetically sealed. A Applying The Input Figure 1 shows the recommended input connections for the 1 Watt Output SIP series. This series is only protected for momentary output short circuits to common so a fast acting fuse is recommended to protect the input circuit. It should not be omitted as it serves to prevent unlimited current from flowing in the case of an overcurrent at the load. C1 may not be required when the power source is less than 2" from the unit. The source impedance should be less than Figure 1. 1 Watt SIP Series Typical Application 0.5 ohm over the frequency range of DC to 350 kHz. A 10F solid tantalum capacitor will satisfy the requirements for C1, and should be within 2" of the converter. 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 2 3/2001, eco# 011007-1 1 Watt SIP Single Series DC/DC Converters General Specifications* All Models Isolation Isolation Voltage Input to Output 10A Input to Output Capacitance Environmental Case Operating Range No Derating Storage Range Thermal Impedance (6) Unit Weight Case Material MIN MAX MIN MAX TYP TYP -25 C +85 -40 C 100 58 C/Watt 0.1 oz Non Conductive Plastic Units MIN TYP 3000 25 VDC pF Mechanical tolerances unless otherwise noted: X.XX dimensions: 0.020 inches X.XXX dimensions: 0.010 inches Pin 1 2 3 4 Function +INPUT -INPUT CMN +OUTPUT Very Low Noise Input Circuit Figure 2 shows a very low noise input circuit that may be used with the converters. This circuit will reduce the input reflected ripple current to less than 5 mA peak to peak. L1 should be sized to handle the maximum DC current of your application. C1 must be used if L1 is required in the circuit. L1 = 5H C1 = 10F Figure 2. This circuit will reduce the input reflected ripple current to less than 5 mA peak to peak. See the discussion in the text for selecting C1 and L1. inductor L2 appropriately for the maximum expected load current. All the ground connections must be as short as possible back to the CMN pin. The filter should be placed as close as possible to the converter, even if your load is at some distance. Applying The Output Figure 1 shows the typical output connection for the converter. C2 is required to filter the output. It must be 10F minimum and can be made up of from the bypass capacitors already used in your application. Increasing C2 will lower the output noise. Operation With Light Loads This converter uses a semi-regulated design. The output voltage will vary as the load is changed, increasing as the load is decreased. See the Output Voltage vs. Output Load curve. Operation With Changing Input Voltage The output will change proportionally to a change in the input voltage. The typical output voltage change is 1.2% per % change in input voltage. Low Noise Output Circuit The circuit shown in Figure 3 can be used to reduce the output noise to below 4 mV p-p over a 20 MHz bandwidth. Size Figure 3. This circuit can reduce the output noise to below 4mV P-P over a 20 MHz bw. Size L2 for the maximum expected load current. Place as close as possible to the converter. A Negative Outputs A negative output voltage is obtained by connecting the +Output pin to the low side of the load, and taking the negative output from the CMN pin of the converter. Grounding The input and output sections are fully floating and isolated from each other. They may be operated fully floating or with a common connection between the input and output. 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 3 3/2001, eco# 011007-1 1 Watt SIP Single Series DC/DC Converters Temperature Derating The 1 Watt Output SIP series can be operated up to a +85C case temperature. Case temperature can be roughly calculated from ambient by knowing that the case temperature rise is approximately 58C per package watt dissipated. For example: If a 5S12.080SIP is delivering 0.9 watts at 5V input, at what ambient could it expect to run with no additional cooling such as moving air? Efficiency is approximately 74% which leads to an input power of 1.2 watts. The internal power loss is 1.2 - .9 = 0.30 watts. The case temperature rise will be 0.30W x 58C/ W=17C. This number is subtracted from the maximum case temperature rating of 85C to get 68C, which is the maximum ambient operating temperature. This example calculation is for an application with no extra air flow for cooling. Extra cooling air will greatly effect the maximum ambient temperature. Exact internal power loss depends upon the efficiency, input voltage, and load in the application. The above example is a rough approximation to the maximum ambient temperature. Because of the difficulty of defining ambient temperature, these calculations should be verified by actual measurement before committing to a production design. Typical Performance: (Tc=25C) OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S5.150SIP 5.80 7.90 OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S7.140SIP 13.50 OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S12.080SIP OUTPUT VOLTAGE (VOLTS) OUTPUT VOLTAGE (VOLTS) 5.60 7.60 OUTPUT VOLTAGE (VOLTS) 0 40 80 120 160 13.00 5.40 7.30 5.20 12.50 7.00 5.00 12.00 4.80 6.70 4.60 0 40 80 120 160 6.40 11.50 0 30 60 90 OUTPUT LOAD (mA) OUTPUT LOAD (mA) OUTPUT LOAD (mA) OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S14.070SIP 15.40 16.50 OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S15.065SIP 18.50 OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S17.060SIP OUTPUT VOLTAGE (VOLTS) OUTPUT VOLTAGE (VOLTS) 15.00 OUTPUT VOLTAGE (VOLTS) 18.00 15.90 14.60 17.50 15.30 14.20 17.00 A 0 20 40 60 80 14.70 13.80 16.50 13.40 0 20 40 60 80 14.10 0 20 40 60 80 16.00 OUTPUT LOAD (mA) OUTPUT LOAD (mA) OUTPUT LOAD (mA) EFFICIENCY Vs. OUTPUT LOAD 80 OUTPUT VOLTAGE Vs. OUTPUT LOAD 5S24.040SIP 26.50 12-17 VOLT OUTPUT OUTPUT VOLTAGE (VOLTS) 26.00 EFFIECIENCY (%) 60 5-7 VOLT OUTPUT 40 25.50 25.00 24.50 20 24.00 0 0 20 40 60 80 100 23.50 0 10 20 30 40 50 % OF RATED LOAD (%) OUTPUT LOAD (mA) 2401 Stanwell Drive * Concord, California 94520 * Ph: 925/687-4411 or 800/542-3355 * Fax: 925/687-3333 * www.calex.com * Email: sales@calex.com 4 3/2001, eco# 011007-1 |
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