PKA 2000 I 25–40 W DC/DC Power Modules 24 V Input Series • Single, dual and triple output • 500 V dc isolation voltage • MTBF >2 million hours @75 °C case temperature • Complete, no extra filters or heatsinks required The 25-40 watts PKA 2000 series hybrid DC/DC power modules are especially designed for decentralized 24/28 Vdc system distributed onboard DC/DC coverters. By using a thickfilm thecknology, which provides a high degree of intergration as well as efficient thermal management, and by utilizing a 300 kHz switching frequency, these highly reliable products comply to demanding applications within e.g. cellular radio, medical, industrial and airborne industri. Input to output isolation is 500 Vdc . Mechanical ruggedness – in conformance with IEC 68-2 - is close to requirements for discrete E components. Extreme temperature conditions can be met since the converters can operate with full output power in ambient temperatures ranging from –45 to +85 °C or up to +115 °C case temperature, making the products ideal also for applications within various non-controlled environments. The PKA series is manufactured using highly automated manufacturing lines with a world-class quality commitment and a five-year warranty. Ericsson Microelectronics AB has been an ISO 9001 certified supplier since 1991. For a complete product program please reference the back cover. General Absolute Maximum Ratings Characteristics temperature1) min max Unit – 45 +115 °C TC Case TS Storage temperature – 55 +125 °C VI Input voltage – 0.5 36 V dc VISO Isolation voltage (input to output test voltage) 500 V dc Transient input energy @ TA = +25 °C 1.3 Ws 1) VRC Remote control voltage (pin 9) 0 5 V Safety Vadj Output adjust voltage (pin 10) 0 VO V max Unit The PKA 2000 I Series DC/DC power modules are designed in accordance with EN 60 950, Safety of information technology equipment including electrical business equipment and certified by SEMKO. The PKA power modules are recognized by UL and meet the applicable requirements in UL 1950 Safety of information technology equipment, the applicable Canadian safety requirements and UL 1012 Standard for power supplies. The DC/DC power module shall be installed in an end-use equipment and considerations should be given to measuring the case temperature to comply with TC max when in operation. They are intended to be supplied by isolated secondary circuitry and shall be installed in compliance with the requirements of the ultimate application. If connected to a 24 V DC power system reinforced insulation must be provided in the power supply that isolates the input from the ac mains. The isolation in the DC/DC power module is an operational insulation in accordance with EN 60 950. One pole of the input and one pole of the output is to be grounded or both are to be kept floating. The terminal pins are only intended for connection to mating connectors of internal wiring inside the end-use equipment. The isolation voltage is a galvanic isolation and is verified in an electric strength test. Test voltage (VISO) between input and output is 500 V dc. The capacitor between input and output has a value of 10 nF and the leakage current is less than 1mA @ 26 V dc. Flammability ratings of the terminal support and internal plastic construction details meets UL 94V-0. Corresponding ambient temp. range (TA) at full output power is –45 to +85 °C. Input TC < TC max Characteristics VI VIoff II rush Conditions min PIi typ TC < TC max 19 32 V TC < + 95 °C 19 35 V Turn-off input voltage (See Operating Information) 13 18 V Inrush current2) IO = IOnom Input voltage range II 2t 15 A 5×10-4 A2 s Input idling power IO =0,TC = 0...+95°C 0.8 W Input transient peak current (transient immunity) P< 1 kW, VC < 50 V, tr/td =10/1000 ms 20 A 2) PKA 2411 PIL = 30 A, 2×10-3 A2s *) PKA 2432 PIL = 30 A, 5×10-3 A2s Environmental Characteristics Characteristics Test procedure & conditions Vibration (Sinusoidal) IEC 68-2-6 Fc Frequency Amplitude Acceleration Number of cycles 10–500 Hz 0.75 mm 10 g 10 in each axis Shock (Half sinus) IEC 68-2-27 Ea Peak acceleration Shock duration 200 g 3 ms Bump (Half sinus) IEC 68-2-29 Eb Peak acceleration Bump duration Number of bumps 40 g 6 ms 1000 in 6 directions Temperature change IEC 68-2-14 Na Temperature Number of cycles –40°C to +125°C 10 Damp heat IEC 68-2-3 Ca Temperature Duration 40°C 56 days Accelerated damp heat IEC 68-2-3 Ca with bias Temperature Humidity Duration 85°C 85% RH 500 hours 2 Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute MaximumRatings, sometimes referred to as no destruction limits, are normally tested with one parameter at a time exceeding the limits of Output data or Electrical Characteristics. If exposed to stress above these limits, function and performance may degrade in an unspecified manner. EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Mechanical Data On-Card Off-Card Dimensions in mm (in) Connections Pin Weight Designation Function 1 RC Remote control. To turn-on and turn-off the output. It is also used to adjust the turn-off input voltage threshold. 2 NC Not connected. 3 –In Negative input. 4 +In Positive input. 5 Aux Auxiliary. 6 NC –Out 2 –Out 3 Not connected in singles. Negative output 2 in duals. Negative output 3 in triples. 7 NC +Out 2 Not connected in singles. Positive output 2 in duals and triples. 8 –Out 1/Rtn Negative output 1 in singles and duals. Output return in triples. 9 +Out 1 Positive output 1in all models. Vadj Output voltage adjust. 10 EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 95 gr (3.35 oz) PKA 2432 PIL 112 gr (3.95 oz) Case Blue anodized self-cooled aluminium chassis with snap-on cover and with tin plated brass pins. Thermal data Thermal resistance case to ambient PI-version Rth case-amb. = 5.0 °C/W PIL-version Rth case-amb. = 4.6 °C/W For Off-Card versions (CI) the specification is valid if mounting surface has Rth < 7 °C/W to ambient. 3 Electrical Data Fundamental circuit diagrams Single output 5 4 1 9 8 10 3 Dual output 5 4 1 9 8 10 3 Triple output 5 4 7 1 6 9 8 10 3 4 EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 PKA 2211 PI, CI TC = 0…+95°C, VI = 19...35V unless otherwise specified. Output Output 1 Characteristics VOi Output voltage initial setting and accuracy Conditions Unit min typ max 5.10 5.13 5.17 Output adjust range1) VO ±10 Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA Line regulation Load regulation ttr Load transient recovery time Vtr Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time V TC = +25°C, IO = IO max, VI = 26 V IO = 0.1 …1.0 ´ IO max 5.00 % 5.36 V 5.40 V IO = IO max 72 mV IO = 0.1 …1.0 ´ IO max, VI = 26 V 62 mV 100 ms +250 mV –250 mV ±0.5 mV/°C 0.1 …0.9 ´ VO 10 ms From VI connection to VO = 0.9 ´ VOi 30 ms IO= 0.1 …1.0 ´ IO max, VI = 26 V load step = 0.8 × IOmax di <0.1A/ms dt IO =IO max, TC <TC max I O= 0.1…1.0 ´ IO max ts Start-up time IO Output current 0 PO max Max output power3) 25 W Ilim Current limiting threshold 5.1 A Isc Short circuit current1) VO ac Output ripple & noise IO =IO max SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) TC < TC max 5.0 A A 20 Hz …5 MHz 90 50 mVp-p dB 1) See Operating Information. Temperature coefficient is positive at low temperatures. 3) See Typical Characteristics, Power derating. 2) Miscellaneous Characteristics Conditions h Efficiency IO = I O max, VI =26 V Pd Power dissipation IO = IO max, VI =26 V EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 min typ 78 80 % 6.25 W max Unit 5 PKA 2411 PIL TC = 0…+95°C, VI = 19…35 V unless otherwise specified. Output Output 1 Characteristics VOi Conditions Unit Output voltage initial setting and accuracy min typ max 5.10 5.13 5.17 V TC = +25°C, IO = IO max, VI =26 V Output adjust range1) VO ±10 Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA Line regulation Load regulation ttr Load transient recovery time Vtr Load transient voltage Tcoeff Temperature coefficient 2) tr Ramp-up time IO = 0.1 …1.0 ´ IO max 5.00 % 5.36 V 5.40 V IO = I O max 62 mV IO = 0.1 …1.0 ´ IO max, VI = 26 V 72 mV 200 ms +250 mV –250 mV ±0.5 mV/°C 0.1 …0.9 ´ VO 10 ms From VI connection to VO = 0.9 ´ VOi 30 ms IO= 0.1 …1.0 ´ IO max, VI = 26 V load step = 0.8 × IOmax di <0.1A/ms dt IO =IO max, TC <TC max I O= 0.1…1.0 ´ IO max ts Start-up time IO Output current 0 PO max Max output power3) 40 W Ilim Current limiting threshold 8.15 A Isc Short circuit current1) VO ac Output ripple & noise IO =IO max SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) 1) 2) 3) TC < TC max 8.0 A A 90 20 Hz …5 MHz 50 mVp-p dB See Operating Information. Temperature coefficient is positive at low temperatures. See Typical Characteristics, Power derating. Miscellaneous Characteristics 6 Conditions h Efficiency IO = IO max, VI = 26 V Pd Power dissipation IO = IO max, VI = 26 V min 79 typ max Unit 81 % 9.4 W EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 PKA 2323 PI, CI TC = 0…+95°C, VI = 19...35 V unless otherwise specified. IO1 nom = 1.25 A, IO2 nom = 1.25 A. Output Output 2 Output 1 Characteristics VOi Conditions Unit Output voltage initial setting and accuracy min typ max min typ max 11.74 11.97 12.20 11.77 12.00 12.23 V TC = +25°C, IO = IOnom, VI =26 V Output adjust range1) VO ±10 Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA Line regulation Load regulation ttr Load transient recovery time Vtr Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time IO 1= 0.1 …1.0 ´ IO nom IO 2= IO 2nom 11.48 % 12.57 V 12.50 15.90 V IO = IO nom 168 192 mV IO 1= 0.1 …1.0 ´ IO 1nom, I O 2= IO 2nom, VI = 26 V 144 200 200 ms +600 +600 mV – 600 – 600 mV ±1.2 ±1.2 mV/°C 0.1 …0.9 ´ VO 10 10 ms From VI connection to VO = 0.9 ´ VOi 30 30 ms IO=0.1 …1.0 ´ IO nom, VI = 26 V load step = 0.8 ´ IOnom, IO1 = IO2 di <0.1A/ms dt IO =IO nom, TC <TC max I O= 0.1…1.0 ´ IO nom mV ts Start-up time IO Output current PO max Max total output power3) Calculated value Ilim Current limiting threshold TC < TC max Isc Short circuit current1) VO ac Output ripple & noise IO = IO nom SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) 0 2.0 0 2.0 A W min 30, max 15 on Out 2 min 1.02 × PO max4) A 140 20 Hz …5MHz 140 43 43 mVp-p dB 1) See Operating Information. Temperature coefficient is neutral at low temperatures. 3) See Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous Characteristics Conditions h Efficiency IO = IO nom, VI = 26 V Pd Power dissipation IO = IO nom, VI = 26 V EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 min 84 typ max Unit 86 % 4.9 W 7 PKA 2325 PI, CI TC = 0…+95°C, VI = 19…35 V unless otherwise specified. IO1 nom = 1.0 A, IO2 nom = 1.0 A. Output Output 2 Output 1 Characteristics VOi Output voltage initial setting and accuracy Conditions Unit min typ max min typ max 14.66 14.96 15.26 14.68 14.98 15.28 Output adjust range1) VO ±10 Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA Line regulation Load regulation ttr Load transient recovery time Vtr Load transient voltage Tcoeff Temperature coefficient 2) tr Ramp-up time V TC = +25°C, IO = IOnom, VI = 26 V IO 1= 0.1 …1.0 ´ IO nom IO 2= IO 2nom 14.35 % 15.64 V 15.50 20.00 V IO = IO nom 210 240 mV IO 1= 0.1 …1.0 ´ IO 1nom, IO 2 = IO nom, VI = 26 V 180 200 200 ms +750 +750 mV – 750 – 750 mV ±1.5 ±1.5 mV/°C 0.1 …0.9 ´ VO 10 10 ms From VI connection to VO = 0.9 ´ VOi 30 30 ms IO=0.1 …1.0 ´ IO nom, VI = 26 V load step = 0.8 ´ IOnom, IO1 = IO2 di <0.1A/ms dt IO =IO nom, TC <TC max IO= 0.1…1.0 ´ IO nom mV ts Start-up time IO Output current PO max Max total output power3) Ilim Current limiting threshold Isc Short circuit current1) VO ac Output ripple & noise IO = IO nom SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) 0 1.6 0 1.6 A W min 30, max 15 on Out 2 min 1.02 × PO max4) TC < TC max A 140 20 Hz … 5 MHz 140 43 43 mV p-p dB 1) See Operating Information. Temperature coefficient is neutral at low temperatures. 3) See Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous 8 Characteristics Conditions h Efficiency IO = IO nom, VI = 26 V Pd Power dissipation IO = IO nom, VI = 26 V min typ 82 85 % 5.3 W max Unit EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 PKA 2231 PI, CI TC = 0…+95°C, VI = 19...35 V unless otherwise specified. IO1 nom = 3.8 A, IO2, 3 nom = 0.25 A. Output Output 2 Output 1 Characteristics VOi Output 3 Conditions Unit Output voltage initial setting and accuracy min typ max 5.10 5.13 5.17 min typ max 11.85 ±4% min typ max 11.85 ±4% V TC = +25°C, IO = IO nom, VI = 26 V Output adjust range1) VO Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA Line regulation Load regulation ttr Load transient recovery time Vtr Load transient voltage IO = 0.1 …1.0 ´ IO nom, IO 2, 3= IO nom V IO = IO nom 62 168 168 mV IO1= 0.1 …1.0 ´ IO nom, IO2, 3 = IO nom, VI = 26 V 52 IO= 0.1 …1.0 ´ IO nom, VI = 26 V load step = 80% of IO nom symmetrical load, IO2, 3 = IO nom 100 100 ms +250 +650 +650 mV –250 –650 –650 mV ±0.5 ±1.2 ±1.2 mV/°C 0.1 …0.9 ´ VO 10 10 10 ms From VI connection to VO = 0.9 ´ VOi 30 30 30 ms di <0.1A/ms dt I O= 0.1 …1.0 ´ IO nom, VI = 26 V mV 100 Ramp-up time Output current V 15.90 tr IO 5.34 15.90 Temperature coefficient2) IO =IO nom, TC < TC max Start-up time 5.00 5.50 Tcoeff ts % ±10 0 POmax Max total output power3) 5 0 1 0 1 min 25, max 15 on Out 2 + Out 3 Ilim Current limiting threshold Isc Short curcuit current1) VOac Output ripple & noice IO = IO nom SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) A W min 1.02 ´ PO max4) TC < TC max A 90 20 Hz …5 MHz 150 50 43 150 43 mV p-p dB 1) See Operating Information. Temperature coefficient is neutral at low temperatures. 3) See Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous Characteristics Conditions h Efficiency IO = IO nom, VI = 26 V Pd Power dissipation IO = IO nom, VI = 26 V EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 min typ 78 82 % 5.5 W max Unit 9 PKA 2232 PI, CI TC = 0…+95°C, VI = 19...35 V unless otherwise specified. IO1 nom = 3.8 A, IO2, 3 nom = 0.2 A. Output Output 2 Output 1 Characteristics VOi Output 3 Conditions Unit Output voltage initial setting and accuracy min typ max min typ 5.10 5.13 5.17 14.25 15.00 max min typ max 15.75 –14.75 –15.00 –15.75 V TC = +25°C, IO = IO nom, VI = 26 V Output adjust range1) VO % ±10 IO = 0.1 …1.0 ´ IO nom, IO 2, 3 = IO nom Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA 5.5 21.8 21.8 V Line regulation IO = IO nom 62 240 240 mV Load regulation IO1= 0.1 …1.0 ´ IO nom, IO2, 3 = IO nom, VI = 26 V 52 ttr Load transient recovery time Vtr Load transient voltage IO= 0.1 …1.0 ´ IO nom, VI = 26 V load step = 80% of IO nom symmetrical load, IO2, 3 = IO nom di <0.1A/ms dt ms +250 +750 +750 mV –250 –750 –750 mV ±0.5 ±1.5 ±1.5 mV/°C 0.1 …0.9 ´ VO 10 10 10 ms From VI connection to VO = 0.9 ´ VOi 30 30 30 ms Ramp-up time IO Output current mV 100 tr Start-up time V 100 Temperature coefficient2) IO =IO nom, TC < TC max I O= 0.1 …1.0 ´ IO nom, VI = 26 V 5.33 100 Tcoeff ts 5.00 0 PO max Max total output power3) 5.0 0 0.8 0 0.8 min 25, max 15 on Out 2 + Out 3 Ilim Current limiting threshold Isc Short curcuit current1) VO ac Output ripple & noice IO = IO nom SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) A W min 1.02 ´ PO max4) TC < TC max A 90 20 Hz …5 MHz 150 50 40 150 40 mVp-p dB 1) See Operating Information. Temperature coefficient is neutral at low temperatures. 3) See Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous Characteristics Conditions h Efficiency IO = IO nom, VI = 26 V Pd Power dissipation IO = IO nom, VI = 26 V 10 min typ 78 83 % 5.1 W max Unit EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 PKA 2432 PIL TC = 0…+95°C, VI = 19...35 V unless otherwise specified. IO1 nom = 5.0 A, IO2, 3 nom = 0.45 A. Output VOi Output 3 Output 2 Output 1 Characteristics Conditions Unit Output voltage initial setting and accuracy min typ max min typ 5.03 5.13 5.24 15.84 16.50 max min typ max 17.16 –15.84 –16.50 –17.16 V TC = +25°C, IO = IO nom, VI = 26 V Output adjust range1) VO % ±10 IO = 0.1 …1.0 ´ IO nom, IO 2, 3 = IO nom Output voltage tolerance band Long term drift included Idling voltage IO = 25 mA 5.4 23.0 23.0 V Line regulation IO = IO nom 185 725 725 mV Load regulation IO1= 0.1 …1.0 ´ IO nom, IO2, 3 = IO nom, VI = 26 V 54 ttr Load transient recovery time Vtr Load transient voltage IO= 0.1 …1.0 ´ IO nom, VI = 26 V load step = 80% of IO nom symmetrical load, IO2, 3 = IO nom di <0.1A/ms dt ms +250 +830 +830 mV –250 – 830 –830 mV ±0.5 ±1.7 ±1.7 mV/°C 0.1 …0.9 ´ VO 10 10 10 ms From VI connection to VO = 0.9 ´ VOi 30 30 30 ms Ramp-up time IO Output current mV 100 tr Start-up time V 100 Temperature coefficient 2) IO =IO nom, TC < TC max I O= 0.1 …1.0 ´ IO nom, VI = 26 V 5.52 100 Tcoeff ts 4.82 0 PO max Max total output power3) 8.0 0 2.0 0 2.0 min 40, max 25 on Out 2 + Out 3 Ilim Current limiting threshold Isc Short curcuit current1) VO ac Output ripple & noice IO = IO nom SVR Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) A W min 1.02 ´ PO max4) TC < TC max A 90 20 Hz …5 MHz 150 40 30 150 30 mVp-p dB 1) See Operating Information. Temperature coefficient is neutral at low temperatures. See Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) 3) Miscellaneous Characteristics Conditions h Efficiency IO = IO nom, VI = 26 V Pd Power dissipation IO = IO nom, VI = 26 V EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 min typ 81 83 % 8.2 W max Unit 11 PKA2211 PI, CI Efficiency (typ) Output characteristic (typ) Power derating 90 Efficiency (%) 19 V 80 35 V 70 60 3 2 1 4 5 Load current (A) PKA 2411 PIL Efficiency (typ) Output characteristic (typ) Power derating 90 Efficiency (%) 19 V 80 35 V 70 60 1.6 3.2 4.8 6.4 8.0 Load current (A) PKA 2323 PI, CI Output characteristic (typ) Efficiency (typ) Output characteristic (typ) 90 Efficiency (%) 19 V 80 35 V 70 60 0.25 0.50 0.75 1.0 1.25 Load current Output 1(A), IO2 = IO1 Power derating 12 EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 PKA 2325 PI, CI Efficiency (typ) Output characteristic (typ) Output characteristic (typ) 90 Efficiency (%) 19V 80 35 V 70 60 0.20 0.60 0.40 0.80 1.0 Load current Output 1(A), IO2 = IO1 Power derating PKA 2231 PI, CI Efficiency (typ) Output characteristic (typ) Output characteristic (typ) 90 Efficiency (%) 19 V 80 35 V 70 60 0.8 1.6 2.4 3.2 4.0 Load current Output 1(A), IO2, IO3 = IOnom Output characteristic (typ) EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Power derating 13 PKA 2232 PI, CI Output characteristic (typ) Efficiency (typ) Output characteristic (typ) 90 Efficiency (%) 19 V 80 35 V 70 60 0.76 1.52 2.28 3.04 3.8 Load current Output 1(A), IO2, IO3 = IOnom Power derating Output characteristic (typ) PKA 2432 PIL Efficiency (typ) Efficiency (%) 90 Output characteristic (typ) Output characteristic (typ) 19 V 35 V 80 70 60 1 3 4 2 Load current Output 1(A), IO2, IO3 = IOnom Output characteristic (typ) 14 5 Power derating EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Over Voltage Protection (OVP) EMC Specifications The conducted EMI measurement was performed using a module placed directly on the test bench. The fundamental switching frequency is 300 kHz ±15% @ VI = 26V, IO = (0.1...1.0) × IOmax. The remote control can also be utilized for OVP by using the external circuitry in fig. 2. Resistor values given are for 5 V output applications, but can easily be adjusted for other output voltages and the desired OVP level. Conducted EMI Input terminal value (typ) 5 4 1 6 7 9 8 10 3 Fig. 2 Maximum Capacitive Load The maximum recommended capacitance connected directly to the PKA DC/DC power modules’ output, without resistance or inductance in series, is 100 mF/A (output current rating). Connect capacitors across the load for maximum effectiveness and maximum stability margins. Turn-off Input Voltage (VIoff) 5 50 Test Set-up according to CISPR publ. 1A. Output Ripple (VOac) Output ripple is measured as the peak to peak voltage of the fundamental switching frequency. The input voltage is monitored and the PKA DC/DC power module will turn on and turn off at predetermined levels. The levels can be decreased by means of an external resistor connected between pin 1 and pin 4. A 200 kW resistor will decrease the shutdown voltage below 18 V. To maintain the nominal output voltage at input voltages below VI min it may be necessary to decrease the load. Output Voltage Adjust (Vadj) Operating information Remote Control (RC) Turn-on or turn-off can be realized by using the RC-pin. Normal operation is achieved if pin 1 is open (NC). If pin 1 is connected to pin 3 the PKA DC/DC power module turns off. To ensure safe turn-off the voltage difference between pin 1 and 3 shall be less than 1.8 V. RC is TTL open collector compatible (see fig. 1). Pin 1 is an output and no current should be driven into pin 1. Use a diode if necessary e.g. totem pole TTL logic. The internal pull-up resistance is 36 kW. +VI PKA (pin 1) TTL Control Logic -In (pin 3) EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Parallel Operation Due to the current limiting protection (hick-up), temperature coefficient and output voltage characteristic for PKA paralleling of modules for increased power is not recommended. PKA can be paralleled for redundancy. Current Limiting Protection RC -VI The output voltage, VO, can be adjusted by using an external resistor. The output voltage adjust function is not accurate and it is recommended to use a potentiometer. To decrease the output voltage the resistor should be connected between pin 10 and pin 9 (+ Out 1). To increase the output voltage the resistor should be connected between pin 10 and pin 8 (– Out 1). Fig. 1 The output power is limited at loads above the output current limiting threshold (Ilim), specified as a minimum value. As the PKA multiple output models are power limited, current limiting threshold for an individual output is set by the loads on the other outputs. The power module can withstand continuous short circuit without destruction. A hick-up mode is used on all models to minimize the internal power dissipation. The hick-up time constant is set by the slow start. 15 Input and Output Impedance Both the source impedance of the power feeding and the load impedance will interact with the impedance of the DC/DC power module. It is most important to have the ratio between L and C as low as possible, i.e. a low characteristic impedance, both at the input and output, as the power modules have a low energy storage capability. Use an electrolytic capacitor across the input or output if the source or load inductance is larger than 10 mH. Their equivalent series resistance together with the capacitance acts as a lossless damping filter. Suitable capacitor values are in the range 10–100 mF. Accessories PKZ 0001 PKZ 0004 PI version of ground pin for case, in packages of 10 pcs incl. mounting screws. Mounting bracket for Off-Card mounting in packages of 2 pcs. Quality Reliability Meantime between failure (MTBF) is calculated to >2.0 million hours at full output power and a case temperature of +75°C (TA =+45°C), using the Ericsson failure rate data system. The Ericsson failure rate data system is based on field failure rates and is continuously updated. The data corresponds to actual failure rates of component used in Information Technology and Telecom equipment in temperature controlled environments (TA =–5…+65°C). The data is considered to have a confidence level of 90%. For more information see Design Note 002. Quality Statement The products are designed and manufactured in an industrial environment where quality systems and methods like ISO 9000, 6s and SPC, are intensively in use to boost the continuous improvements strategy. Infant mortality or early failures in the products are screened out by a burn-in procedure and an ATE-based final test. Conservative design rules, design reviews and product qualifications, plus the high competence of an engaged work force, contribute to the high quality of our products. Warranty Mounting information for PKZ 0001 The two holes on the ground pin are ovals for positioning of the pin according to the PCB layout. The screws are delivered together with the pin. Mounting information for PKZ 0004 Ericsson Microelectronics warrants to the original purchaser or end user that the products conform to this Data Sheet and are free from material and workmanship defects for a period of five (5) years from the date of manufacture, if the product is used within specified conditions and not opened. In case the product is discontinued, claims will be accepted up to three (3) years from the date of the discontinuation. For additional details on this limited warranty we refer to Ericsson Microelectronics AB’s “General Terms and Conditions of Sales”, or individual contract documents. Limitation of Liability Ericsson Microelectronics does not make any other warranties, expressed or implied including any warranty of merchantability or fitness for a particular purpose (including, but not limited to, use in life support applications, where malfunctions of product can cause injury to a person’s health or life). Mounting surface must be flat within 0.2 mm. All specifications are valid if the mounting surface has Rth<7°C/W. Information given in this data sheet is believed to be accurate and reliable. No responsibility is assumed for the consequences of its use nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Ericsson Microelectronics. These products are sold only according to Ericsson Microelectronics’ general conditions of sale, unless otherwise confirmed in writing. Specifications subject to change without notice. 16 EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Notes: EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 17 Notes: 18 EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 Notes: EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000 19 Product Program Ordering No. VO/IO max VI Output 2/3 Output 1 24 V 5 V/5 A 5 V/8 A 12 V/2 A 15 V/1.6 A0 +5 V/5 A 1 +5 V/5 A +5 V/8 A 12 V/2 A 15 V/1.6 A. ±12 V/1 A ±15 V/0.8 A ±15 V/2 A Ericsson Microelectronics AB SE-164 81 KISTA, Sweden Phone: +46 8 757 5000 www.ericsson.com/microelectronics For local sales contacts, please refer to our website or call: Int. +46 8 757 4700, Fax: +46 8 757 4776 PO max 25 W 40 W 30 W 30 W 25 W 25 W 40 W On-Card Off-Card PKA 2211 PI PKA 2411 PIL PKA 2323 PI PKA 2325 PI PKA 2231 PI PKA 2232 PI PKA 2432 PIL PKA 2211 CI PKA 2323 CI PKA 2325 CI PKA 2231 CI PKA 2232 CI The latest and most complete information can be found on our website! Data Sheet EN/LZT 146 09 R1A © Ericsson Microelectronics AB, June 2000