DC-DC CONVERTERS. NON-ISOLATED REGULATED DC-DC Converter Modules APPLICATIONS FEATURES OPTIONS DESCRIPTION. CORE Technology, Inc.

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1 FEATURES Small Size 2.4 x 2.3 x 0. Constant Frequency Efficiency Up to 96.% Non-isolated Remote On/Off (nput Enable) Remote Sense Output oltage Adjustment from 60% to 1% Load Sharing DC Fail Output Over-Temp Shutdown (with Auto-Recovery) User Selectable Fold-Back or Straight-Line Current Limit User Selectable Current Limit Set Point Over-oltage Protection Over-Current Protection 0 C Base-Plate Operation Low Output Noise DESCRPTON NON-SOLATED REGULATED DC-DC Converter Modules APPLCATONS Distributed power architecture Telecommunications Applications requiring high power in compact space. Automotive / Truck Personal computers and peripherals ndustrial control systems Battery operated systems OPTONS 14 dc to 60 dc nput From 0 Watts to 00 Watts Special Output oltages Available * UL is a registered trademark of the Underwriters Laboratories, nc. CSA is a registered trademark of the Canadian Standards Association. This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. (The CE mark is placed on selected products.) DC-DC CONERTERS Core Technology s family of Positive Synchronous Buck Regulator (SBR) Power Modules are DC-DC converters that can operate over an input voltage range of 14 dc to 60 dc. SBR converters are non-isolated and are particularly known for high efficiency. These power modules provide excellent line and load regulation and are available in a wide range of output voltages. n addition, several user selectable current limit features along with many common features have been designed into this converter to provide the user with maximum flexibility. f isolation is required, the SBR Modules may be combined with Core Technology s CT4XXXE series modules which provide nominal dc and nominal 60 dc out. The CT4XXXE series modules allow isolation from a PFC output or off-line applications. The SBR converters accept the isolated output from the CT4XXXE series and provide accurate, efficient output power. The SBR Power Modules have a maximum output power rating of up to 00 Watts at 0 C base-plate temperature with a 2.3 x 2.4 x 0. form factor. These modules are best used in applications requiring maximum performance in a small form factor.

2 6DC-DC CONERTERS ELECTRCAL SPECFCATONS - Output Parameter Symbol Units CP2BXXCX CP2CXXCX CP2DXXCX CP2FXXCX CP2GXXCX CP2HXXCX CP2JXXCX Nominal Output oltage o olts Typical Efficiency *1 ηeff olts Max Ripple & Noise pp m Reflected Ripple Current *1 RR ma Output oltage Accuracy - % 1% oltage Adjustment Range - % 60% to 1% of nominal Maximum Line Regulation *3 - % 0.1% Maximum Load Regulation *2 - % 0.% Current Limit Set Point - % 0% to 0% of max output current Current Limit Type - - Straight line or foldback Over Current Protection - % % - 12% of output current set point Over oltage Protection - % 118% - 12% of nominal output voltage (manual reset) Over temperature Shutdown - % % of Maximum Base-plate temperature (auto-recovering) Over temp S-down Hysteresis - % C - C ELECTRCAL SPECFCATONS - nput Parameter Symbol Units CP2BXXCX CP2CXXCX CP2DXXCX CP2FXXCX CP2GXXCX CP2HXXCX CP2JXXCX nput oltage Range i olts nput & Output to Chassis dc olts Remote 0n/Off (Enable) - - Yes Yes Yes Yes Yes Yes Yes 1 Hz Ripple Rejection R REJ DB ABSOLUTE MAXMUM RATNGS Parameter Symbol Units CP2BXXCX CP2CXXCX CP2DXXCX CP2FXXCX CP2GXXCX CP2HXXCX CP2JXXCX Maximum Output Power Po Watts Maximum Output Current lo Amps Minimum nput olts i olts Maximum nput olts i olts 64 nput To Output solation - - None Base Plate Temperature Tcs Celsius - C to 0 C Storage Temperature Tst Celsius -40 C to 1 C cc Out Max Current s ma 0 ENRONMENTAL SPECFCATONS Parameter Symbol Units CP2BXXCX CP2CXXCX CP2DXXCX CP2FXXCX CP2GXXCX CP2HXXCX CP2JXXCX Operating Humidity RH - % to 9% RH Temperature Coefficient Tco C 0.02 C Cooling - - Chose heatsink based on ambient and airflow Base Plate Thermal Resistance -R TH C/Watt 0.08 C +/ C ibration - Grms 2 Grms. three axis random vibration Weight - gr/oz/lb 93 gr /.40 oz /.lb Size (LxWxD) - nches 2.4 x 2.3 x 0. MTBF hrs Hours 83,911 24DC in and 7% of Max Out for, 12, 1 volt units 0 olts in and 7% of MAX out for 24, 28, 0 volt units. *2 From no-load to Full Load. *3 From Min input to Max input voltage.

3 TYPCAL APPLCATON LNE (L1) CHASSS LNE (N1) FLTER MODULE CF14EX LOAD(L2) LOAD(N2) FUSNG CONSDERATONS n order to allow maximum flexibility when using these converter modules, an internal fuse is not provided. For module and system protection always provide input fusing based on the particular application requirements. AC(L) SAFETY CONSDERATONS AUTORANGNG MODULE AC(N) CAMXXCX CAP -OUT A PFC MODULE CAN BE UTLZED N PLACE OF THE AUTORANGNG MODULE NPUT SOURCE MPEDANCE Core Technology's Synchronous Buck Regulators should interface to a low AC impedance input source. Large inductive source impedance can affect the stability of the converter. A UF film capacitor located as close to the input pins as possible will insure stability of the module. OER-OLTAGE PROTECTON n order to insure agency approval in which this power module is utilized, the unit must be used in compliance with the creepage, (spacing and separation) requirements with UL-190, CSA and EN6090. CHARACTERSTC CURES PR CC N+ N- EN+ EN- N- +OUT ACF+ ACF- Secondary CC AC Fail DSTRBUTED NTERFACE POWER MODULE MODULE CT4XXXEX See Fig for Output Features on the following pages +OUT -OUT n the event of an over-voltage condition, the SBR module will shut itself down, and will require the removal of input power in order to reset the module into normal operation. N+ N+ +OUT SYNCRONOUS BUCK MODULE N+ OG+ OG- N- N- CP2XXXCX -OUT +OUT SYNCRONOUS BUCK MODULE CP2XXXCX -OUT +OUT SYNCRONOUS BUCK MODULE CP2XXXCX -OUT Parellel Line out A out B DC-DC CONERTERS NORMALZED OUTPUT OLTAGE O() vs CASE TEMPERATURE PERCENT OF FULL LOAD NPUT CURRENT vs NPUT OLTAGE FGURE 1 FGURE 2 Normalized Output oltage, o() Base - Plate Temperature, T (C) Percent of Full Load nput Current (%in) nput oltage (in) Normalized output oltage (o)(%) FGURE 3 OUTPUT OLTAGE vs OUTPUT CURRENT Efficiency (η) FGURE EFFCENCY vs OUTPUT CURRENT 24 olts 28 olts 3.3 olts 2. olts 12 olts 1 olts olts Normalized Output Current ( o) Output Current (o) 7

4 DC-DC CONERTERS Efficiency (η) EFFCENCY vs NPUT OLTAGE FGURE FGURE 6 FGURE 7 CHARACTERSTC CURES CONTNUED nput oltage (o) Output oltage (o) v/div Remote on/off on/off v/div 2. olts 3.3 lots 12 olts 1 olts 24 olts olts START - UP TRANSENT (FROM ENABLE) 28 olts 48 olts FGURE 8 OUTPUT NOSE Output oltage (o) 0 mv/div Output oltage (o) 0 mv/div Time us/div (12 olt unit shown) TRANSENT RESPONSE Time 0 ms/div OUTPUT NOSE MEASUREMENT TEST CONFGURATONS Time 0 ms/div Load Step Change Form 2% - 0% and 0% - 7% of Full Load (12 volt unit shown) NOTE: Measurement taken at 7% load. Coaxial cable with BNC connector must be used. Load should be in close proximity to output and shunted by a 0.01uF ceramic capacitor uf FGURE 9 R load S C O P E EFFCENCY MEASUREMENT 8 NOTE: Measurement taken at terminals of module. All connection points must be tight to avoid erroneous readings. REFLECTED RPPLE CURRENT MEASUREMENT NOTE: Measurements of Reflected Ripple Currents are taken at input terminals with a simulated supply impedance of uh. A low ESR 2uF capacitor connected across the supply is used to suppress any supply impedance deficiencies. Measurements taken, are within 12 of module terminals. All connection points must be tight to avoid erroneous readings. v 24DC FGURE + to scope v FGURE 11 SUPPLY + +in in out -in Ltest uh 12 Cs 2uf current probe LOAD + +o -o

5 REMOTE ON/OFF EXTERNAL CC This is an input to the SBR converter module and can be used to remotely The SBR converter provides an external CC supply. This supply can turn the unit on and off. To enable the power converter, the user must provide the user with 12 volts at a maximum of 0ma. supply a logic high on the EN pin (on 2.7 olts)(max on = 24DC). Typical Logic Typical Logic cc cc cc J8 R (pull-up) EN J3 FGURE 12 FGURE 1 DC FAL REMOTE SENSE SBR converter modules are equipped with a DC Fail Logic signal. n the The SBR Sense lines allow the converter module to compensate for a event that the output voltage falls below a pre-determined value, the DC Fail voltage drop in the current carrying conductors. These lines can be attached Output will be asserted. A logic high ( DC > 2.7 olts) on the DC pin at some distant point requiring accurate voltage regulation. (Do not exceed a indicates that the output voltage is good. A logic low ( DC < 2.7 olts) on 0. volt drop in share lines.) the DC pin indicates that a failure has occurred. DC-DC CONERTERS DC FAL J Typical Logic cc +SENSE J7 -SENSE J12 LOAD FGURE 13 FGURE 16 OER-TEMPERATURE SHUTDOWN The SBR converter modules are equipped with over-temperature protection circuitry, so that the module will not be damaged in an overtemperature condition. The module will auto-restart once the unit is at a safe operating temperature. n addition, a logic output is provided. A logic high ( OT > 2.7 olts) indicates there is not an over-temperature condition. A logic low ( OT < 2.7 olts) indicates when an over-temperature condition exists. LOAD SHARNG The SBR converter modules are equipped with load sharing capability and can be combined or paralleled in order to increase MTBF or output power capability. o+ - OR TMP J4 Typical Logic cc SHARE SHare J2 (J2) o- + o+ - SHARE LEAD + - SHARE SHare (J2) o- + FGURE 14 FGURE 17 9

6 DC-DC CONERTERS OUTPUT OLTAGE SETTNG OUTPUT OLTAGE ADJUSTMENTS 60% TO 1% The trim pin can be utilized to trim the voltage up to 1% of the nominal output voltage or down to 60% of nominal output voltage. Tup TR T down T- J 11 TR J T+ J9 FGURE 18 CURRENT LMTNG R adj (k) Pot OUTPUT OLTAGE EXAMPLE Example: To trim a 12 volt output up 8%, the value of R up =? Note: R up can be tied between T R and T up to trim up 8%. R down can be trim between T R and T down to trim down 8% (use appropriate equation.) R up = 1 2 x 370K +7K Tup TR T down ( ) J11 T- J TR T+ J9 = 40 - R down % = (8) ( ) x 23K R 1 up 2 x R up = ohms 8 R R1a up Where R = Resistance between (T R up ) and (T up) pins R2ato achieve output voltage o=12.96 olts change. % = Percentage in output voltage change required FGURE 19 STRAGHT-LNE CURRENT LMTNG FOLD BACK CURRENT LMTNG When utilizing Straight-Line current limiting and the maximum output current is exceeded, the output voltage will drop to approximately zero while maintaining the maximum rated output current. Configuring the FB pin as shown (open), will enable this feature. FB FEED PN BACK J6 (J6) LM PN J1 (Open) (Open) FGURE CURRENT LMTNG STRAGHT-LNE CURRENT LMTNG When an overload condition exists and Fold Back current limiting is being utilized, the output current will be reduced as well as the output voltage. Configuring the FB pin as shown, will enable Fold Back current limiting. R SLOPE = FB FB PN pin FB - 0. * 409K (AMP) J6 (J6) 2/3 R FB=0K R SLOPE 1/3 R FB=196K R FB = cc cc FGURE 22 12K FB R FB 1K - 1K FOLDBACK FOLDBACK CURRENT LMTNG FB ADJUSTABLE CURRENT LMT SET PONT ADJ. FOLD BACK CURRENT LMT SET PONT When utilizing Straight-Line current limiting, the module While utilizing Fold Back current limiting, the module can be configured to limit can be configured to limit the output current from 0% to 0% of the the output current from 0% to 0% of the maximum rated output current of the maximum rated output current of the module. Configuring the FB pin module. Configuring the LM pin as shown, will enable this feature. as shown, will enable this feature. Radj = (0 - % of Maximum ) Radj = (0 - % of Maximum ) CC out CURRENT STRAGHT LNE LMT ADJUST cc out cc FOLD BACK FB PN W/CURRENT LMT ADJUST FEED BACK J6 Radj CURRENT LMTNG ADJUST (J6) FOLDBACK W/ CURRENT LMT ADJUST (Open) FB PN F1 FB pin J6 R FB (J6) PN J1 CC LM R PN J1 SLOPE 1K R LM F2 Radj FGURE 21 FGURE 23

7 Power Dissipation, PD (Watts) Power Dissipation, PD (Watts) FREE AR Ambient Temperature (Deg. C) FREE 800 AR Ambient Temperature (Deg. C) 600 FORCED AR CONECTON COOLNG These figures can be utilized to determine if a heat sink and forced air convection cooling will be required in your particular application. Figures 1 through 4 show typical output power vs ambient temperature with various heat sink and air flow conditions. Utilizing these curves, the required cooling for your application can be determined. THERMAL CURES POWER DSSPATON (PD) vs AMBENT TEMPERATURE NO HEAT SNK FGURE Power Dissipation, PD (Watts) Power Dissipation, PD (Watts) POWER DSSPATON (PD)vs AMBENT TEMPERATURE FGURE 2 1/4 HEAT SNK FREE AR FREE AR * Ambient Temperature (Deg. C) Ambient Temperature (Deg. C) POWER DSSPATON (PD)vs AMBENT TEMPERATURE POWER DSSPATON (PD)vs AMBENT TEMPERATURE FGURE 26 1/2 HEAT SNK FGURE 27 1 HEAT SNK * EXAMPLE: For your particular application you have determined that you will require 12 2 amperes (0 watts of output power). A CP2FJ2CX unit will provide up to watts of output power with a 9% efficiency. Therefore, maximum power dissipation from the module will be 16 watts. By viewing Figure 2, it can be determined that in a 60 C environment, forced air cooling of (MN.) with a 1/4 heatsink will be required. NOTE: By providing with a 1/4 heat sink in a 60 C environment, the base plate of the power module will not exceed 0 C DC-DC CONERTERS 11

8 DC-DC CONERTERS Outline Drawing BOTTOM EW 2. DC-DC CONERTER MODULE NPUT OUTPUT DC DC MADE N USA PATENTS PENDNG 4-40 THREADED THRU HOLE PN DA (X8) PN DA (X12) PCB PN LAYOUT As viewed from top of module TYP. PN SPACNG RAD J1 J12 J2 J11 J3 J J4 J9 J J8 J6 J SDE EW Ordering nformation TOLERANCES: Part Numbering Scheme for CP2XXXCX Positive Synchronous Buck Connector Pin Assignment 1,2 +out J 3,4 -out J6,6 -in J7 7,8 +in J8 J1 LM J9 J2 Share J J3 Enable J11 J4 O Temp J12 DC Fail Foldback sense- External CC T up Trim T down sense+ C TYPE N OLTS OUT-OLTS POWER LEEL TEMPERATURE PACKAGE HEAT SNK RANGE SZE C P = Positive 2 = 14-60DC B = 2. DC B = 0 Watts 2 = -2C to +8C C = 1/2 Full Size Blank = No Heat Sink Non- solated Mod C = 3.3 DC D = 0 Watts 3 = -C to +0C L02 = 0.2 Longitudinal D = DC E = Watts L0 = 0.0 Longitudinal F = 12 DC G= Watts L = 1.0 Longitudinal G = 1 DC J = Watts T02 = 0.2 Transverse H = 24 DC K = 00 Watts T0 = 0.0 Transverse J = 28 DC T =1.0 Transverse C P 2 F J 2 C L 12 EXAMPLE - To order a Positive Synchronous Buck Regulator module with an input voltage range of 14DC to 60DC, output voltage of 12 volts, output power of watts, -2C to +8C operating temperature range and 1 longitudinal heat sink would require the above part number. (CP2FJ2CL)