25 to 30 Watt XW Single Series DC/DC Converters

Transcription

1 Features 4: Input Voltage Range Low Noise, Highly Regulated Efficiencies to 4 at Full Load No Derating to C Case Temperature Six-Sided Continuous Shielded, Low Thermal Gradient Copper Case Minimum Input To Isolation Overvoltage Protection for Input and s Direct Paralleling for dded Power Five Year Warranty Model Selection Chart Input Range m 4S.XW S.XW S.XW S.XW S.XW S.XW. 7.. Description These single output DC/DC converters are designed for wide input range low noise telecommunications, industrial control and instrument applications. The ultra wide input range (4:) is ideal for battery or solar based applications. The converters are state-of-the-art 7kHz MOSFET based designs that provide outstanding efficiencies up to 4 percent at full load. The output is regulated with a high loop gain feedback control method that provides linear regulator type performance with a true, high efficiency switching DC/DC topology. The large amount of loop gain insures excellent input ripple rejection and line transient response. Outstanding line and load regulation are achieved over the full input voltage range and over the specified load current range. lso included is a logic (open collector TTL / CMOS compatible) shutdown pin to control converter operation. The XW Single Series is protected from output shorts to common by a high speed pulse by pulse digital current limit circuit and a resettable thermal shut down circuit. The output and the power switch are overvoltage protected. - 3 Watt XW Single Series Block Diagram DOUBLE SHIELDED ISOLTION TRNSFORMER. MEG. µf THERML SHUTDOWN + OUTPUT C C W D + INPUT - INPUT ON/OFF LC INPUT FILTER VOLTGE FEED FORWRD PWM FEEDBCK MPLIFIER 7 CMN 3 + SENSE 4 TRIM C C D µf µf. V 33 µ F 47 µ F V 33 µ F 47 µ F V SIX-SIDED SHIELDED COPPER CSE LOW TC BNDGP REFERENCE W - SENSE Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com eco# 47-, 7-

2 Model Voltage Range Reflected Ripple -MHz bw Input Current Efficiency Model NOTES: * ll parameters measured at Tc= C, nominal input voltage and full rated load unless otherwise noted. Refer to the CLEX pplication Notes for the definition of terms, measurement circuits and other information. () Determine the correct fuse size by calculating the maximum DC current drain at low line input, maximum load(or use the supplied curves) and then adding to percent to get the desired fuse size. (3) Short term stability is specified after a 3 minute warm-up at full load. (4) Transient response is defined as the time for the output to settle from a to 7 step load change to a error band (rise time of step = µ Sec). () Dynamic response is defined as the peak overshoot during a transient as defined in note 4 above. () The input ripple rejection is specified for DC to Hz ripple with a modulation amplitude of of Vin. (7) For module protection only, see also note. Parameters* 4S.XW 4S.XW 4S.XW 4S.XW 4S.XW 4S.XW Voltage Rated Current Voltage Range Load Load Regulation Line Regulation Vin = Min-Max Short Term Stability (3) Long Term Stability Full Load No Load Switching Frequency Maximum Input Overvoltage, ms No Damage Undervoltage Lockout Turn-on Time, Error ecommended Fuse Transient Response (4) Dynamic Response () - Load Input Ripple Rejection () Noise, - MHz bw Temperature Coefficient - RMS Overvoltage Clamp (7) Maximum llowable Voltage Between Pins and 7 () Short Circuit Protection to Common for all s Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com eco# 47-, 7- Units m /khrs () The user must not let the output at the pins exceed this voltage due to the combined effects of line drops and output trim. (9) The logic shutdown pin is Open Collector TTL, CMOS, and relay compatible. The input to this pin is referenced to input (pin ) and is protected to +. () The functional temperature range is intended to give an additional data point for use in evaluating this power supply. t the low functional temperature the power supply will function with no side effects, however, sustained operation at the high functional temperature will reduce expected operational life. The data sheet specifications are not guaranteed over the functional temperature range. () The case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. () 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. µs mv peak 7 db mv P-P YP Input Parameters* 4S.X W 4S.X W 4S.X W 4S.X W 4S.X W 4S.X W Units T 4 ppm/ C Continuous, Hours Minimum Current Limit and Thermal Overload m P-P 7 khz ms R Slow Blow Type () m

3 ON/OFF Function (9) ON Logic Level or Leave Pin Open OFF Logic Level Input Resistance Converter Idle Current, Shut Down Pin Low Isolation Isolation Voltage Input to Either Single to Dual µ Leakage Input to Capacitance Trim Function Input Resistance Proigramming Range Environmental Case Operating Range No Derating Case Funtional Range () Storage Range Thermal Impedance () Thermal Shutdown Case Temperature General General Specifications* ll Models Units.. kohms m pf kohms ± - C -4 9 C - C 3. 4 C/Wat t 9 C U nit Weight. oz. Mounting Kit MS If the sense leads are not used they must be connected to their respective output pins (i.e. Pin 3 to Pin and Pin to Pin 7). Either a fixed resistor or a trimpot can be used for adjusting the output voltage as shown in Figure. The XW Single Series can be directly paralleled for higher output current. The circuit shown in Figure results in output currents that differ by less than between the two units. With the addition of an OPMP active trim as shown in Figure 3, the current sharing will be as good as the match between the current sense resistors. minimum load of m should be used with these circuits. BOTTOM VIEW SIDE VIEW Mechanical tolerances unless otherwise noted: X.XX dimensions: ±. inches X.XXX dimensions: ±. inches Seal around terminals is not hermetic. Do not immerse units in any liquid. Pin Function +INPUT -INPUT 3 +SENSE 4 OUTPUT TRIM -SENSE +OUTPUT 7 CMN ON/OFF Figure. SIMPLE PRLLEL CIRCUIT Figure. CONNECTIONS FOR OUTPUT TRIM Figure 3. OPTIMUM PRLLEL CIRCUIT Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com 3 eco# 47-, 7-, 39-

4 Typical Performance (Tc= C, Full Rated Load). 4S.XW EFFICIENCY Vs. LINE INPUT 4S.XW EFFICIENCY Vs. LOD FULL LOD LINE = 9 LINE = 4 EFFICIENCY () 7 7 FULL LOD EFFICIENCY () 7 7 LINE = LOD () 4S.XW EFFICIENCY Vs. LINE INPUT 4S.XW EFFICIENCY Vs. LOD 9 EFFICIENCY () 4 3 FULL LOD FULL LOD EFFICIENCY () 7 7 LINE = 9 LINE = 4 LINE = LOD () 4S INPUT CURRENT Vs. LINE INPUT VOLTGE 4S.XW IDLE CURRENT Vs. LINE INPUT INPUT CURRENT (MPS) FULL LOD CURRENT (mmps) 4 3. FULL LOD Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com eco# 47-, 7-4

5 Typical Performance (Tc= C, Full Rated Load). 4S.XW EFFICIENCY Vs. LINE INPUT 4S.XW EFFICIENCY Vs. LOD 4 LINE = 9 LINE = 4 EFFICIENCY () FULL LOD FULL LOD EFFICIENCY () 7 7 LINE = LOD () 4S.XW EFFICIENCY Vs. LINE INPUT 4S.XW EFFICIENCY Vs. LOD EFFICIENCY () 4 FULL LOD FULL LOD EFFICIENCY () LINE = 9 LINE = 4 LINE = LOD () 4S INPUT CURRENT Vs. LINE INPUT VOLTGE 4S.XW IDLE CURRENT Vs. LINE INPUT INPUT CURRENT (MPS).... FULL LOD CURRENT (mmps) 4 FULL LOD Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com eco# 47-, 7-

6 Typical Performance (Tc= C, Full Rated Load). OUTPUT VOLTGE Vs. OUTPUT LOD OUTPUT VOLTGE Vs. CSE TEMPERTURE.4 OUTPUT VOLTGE () 4 CURRENT LIMIT MODE HICKUP NORMLIZED OUTPUT () MODE OUTPUT LOD () CSE TEMPERTURE (Deg C) 4S.XW LINE TO OUTPUT TRNSFER FUNCTION OUTPUT IMPEDNCE Vs. FREQUENCY -7 V OUTPUT TTENUTION (db) IMPEDNCE (OHMS).. V OUTPUT - FREQUENCY (Hz). K K K M FREQUENCY (Hz) Manufacturing Company, Inc. Concord, California 94 Ph: 9/7-44 or /4-33 Fax: 9/ sales@calex.com eco# 47-, 7-