PKG 2000 I 46–60 W DC/DC Power Modules 24 V Input Series • Efficiency typ 84% at 5 V and full load • Low profile 11.0 mm (0.43 in.) • 1,500 V dc isolation voltage (duals = 1,000 V dc ) • MTBF > 200 years at +75 °C case temperature • Rugged mechanical design and efficient thermal management, max +100 °C case temperature • EMI measured according to EN 55 022 and FCC part 15J The PKG 2000 I series of low profile DC/DC Power Modules are intended as distributed power sources in decentralized +24 V DC power systems. They can be used as on-board distributed power modules, or serve as building blocks for more centralized power boards. The PKG series of DC/DC power modules provide up to 60W of output power utilizing the standard EriPower™ PKA/PKE pin-out, with an even smaller footprint, and a power density of 20 W/cu.in. The high efficiency makes it possible to operate over a wide temperature range without any extra heatsinks. At forced convection cooling >200 lfm (1 m/s), the PKG units can deliver full power without heatsinks up to +60°C ambient. With derated output power it can also operate in temperature controlled E environments with free convection cooling. By adding external heatsinking, the temperature range can be extended even further. Thanks to their peak power capability, the PKG series is ideal for applications where max power is only required during short durations e.g. in disc drives. The PKG series use ceramic substrates with plated copper in order to achieve good thermal management, low voltage drops and a high efficiency. These products are 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 Safety Characteristics min max Unit TC Case temperature @ max output power – 45 + 100 °C TS Storage temperature – 55 +125 °C VI Input voltage – 0.5 + 40 V dc VISO Isolation voltage (input to output test voltage) VRC Remote control voltage pin 1 – 10 + 10 V dc Vadj Output adjust voltage pin 10 – 10 + 10 V dc Singel output dual output 1,500 1,000 V dc Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, 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. Input TC < TC max Characteristics Conditions range1) min typ Unit 36 V VI Input voltage VIoff Turn-off input voltage (See Operating Information) 16 V VIon Turn-on input voltage (See Operating Information) 17 V rI rush Equivalent inrush current resistance 10 mW CI Input capacitance 3.6 mF PIi Input idling power PRC Input stand-by current 18 max IO =0,TC = –30...+90°C 1.0 VI = 26 V, TC = +25 °C RC connected to pin 4 1.0 2.0 W 2 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 and between case and output is 1,500 V dc (duals = 1,000 V dc) for 60 s. In production the test duration may be decreased to 1 s. The capacitor between input and output has a value of 4.7 nF (duals = 22 nF) and the leakage current is less than 1mA @ 26 Vdc. Test procedure & conditions IEC 68-2-6 Fc Frequency Amplitude Acceleration Number of cycles 10–500 Hz 0.75 mm 10 g 10 in each axis 10...500 Hz Random vibration IEC 68-2-34 Ed Frequency Acceleration Spectral density Duration Reproducibility Shock (Half sinus) IEC 68-2-27 Ea Peak acceleration Shock duration 200 g 3 ms Temperature change IEC 68-2-14 N a Temperature Number of cycles – 40°C to +125°C 100 Accelerated damp heat IEC 68-2-3 C a with bias Temperature Humidity Duration 85°C 85% RH 1000 hours Solder resistability IEC 68-2-20 Tb 1A Temperature, solder Duration 260°C 10… 13 s Resistance to cleaning solvents IEC 68-2-45 XA Method 1 Water Isopropyl alcohol Terpens Method +55 ±5 °C +35 ±5 °C +35 ±5 °C with rubbing Vibration (Sinusoidal) The PKG 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. W Environmental Characteristics Characteristics The PKG 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. 0.5 g2/Hz 10 min in 3 directions medium (IEC 62-2-36) Flammability ratings of the terminal support and internal plastic construction details meets UL 94V-0. Note: 1) The input voltage range 19...36 V meets the requirements for Normal input voltage range in 24 V DC power systems, 20…30 V. At input voltages exceeding 36 V (abnormal voltage) the power loss will be higher than at normal input voltage and TC must be limited to max +90 °C. Absolute max continuous input voltage is 40 V dc. Output characteristics will be marginally affected at 18 V (see also Turn-off Input Voltage). EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 Mechanical Data Foot print Component side Dimensions in mm (in) Connections Pin Weight Designation Function 1 RC Remote control. To turn-on and turn-off the output. 2 TOA Turn-on/off input voltage adjust (see Operating information). 3 – In Negative input. Connected to case. 4 +In Positive input. 5 NC Not connected. 6 – Out 2 Negative output 2. 7 +Out 2 Positive output 2. 8 – Out 1 Negative output 1. 9 +Out 1 Positive output 1. Vadj Output voltage adjust. 10 EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 Maximum 75 g (2.66 oz). Case Blue anodized aluminium casing with embedded tin plated copper pins. 3 Thermal Data Two-parameter model Over Temperature Protection (OTP) Power dissipation is generated in the components mounted on the ceramic substrate. The thermal properties of the PKG DC/DC power module is determined by thermal conduction in the connected pins and thermal convection from the substrate via the case. The two-parameter model characterize the thermal properties of the PKG power module and the equation below can be used for thermal design purposes if detailed information is needed. The values are given for a power module mounted on a printed board assembly (PBA). Note that the thermal resistance between the substrate and the air, Rth sub-A is strongly dependent on the air velocity. Tsub = Pd × Rth sub-P × Rth sub-A/(Rth sub-P + Rth sub-A) + (TP –TA) × Rth sub-A/(Rth sub-P + Rth sub-A) + TA Where: : dissipated power, calculated as PO × (1/h-1) Pd : max average substrate temperature, » TC max Tsub TA : ambient air temperature at the lower side of the power module : average pin temperature at the PB solder joint TP Rth sub-P : thermal resistance from Tsub to the pins Rth sub-A : thermal resistance from Tsub to TA v : velocity of ambient air. Air velocity in free convection is 0.2– 0.3 m/s (40-60 lfm). The PKG DC/DC power modules have an internal over temperature protection circuit. If the case temperature exceeds min +115 °C the power module will go in to OTP-mode. As long as the case temperature exceeds min +115 °C the power module will operate in OTPmode. During OTP-mode the output voltage pulsates between zero and nominal output voltage, which reduces the power loss inside the power module. The PKG DC/DC power module will automatically resume normal operation when the temperature decreases below min +115 °C. Electrical Data Fundamental circuit diagrams Single output 4 9 8 2 20 Control 1 Rth sub-P = 2.5 °C/W Rth sub-A (°C/W) 15 10 3 Case Isolated feedback 10 5 Dual output 0 0 7 6 4 2 Air velocity (m/s) 6 9 4 8 TA Tsub Rth sub-A Rth sub-P TP TA 2 v Pd Tsub Control Rth sub-A 1 Rth sub-P 3 10 Case Isolated feedback TP 4 EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 PKG 2410 PI TC = – 30 …+ 90°C, VI = 19…36 V unless otherwise specified. Output Output 1 Characteristics Conditions Unit typ max 3.30 3.32 V 2.40 3.65 V 3.10 3.40 V 4.0 V min VOi Output voltage initial setting and accuracy 3.28 TC = +25°C, IO = IOmax, VI = 26 V Output adjust range1) VO Output voltage tolerance band Long term drift included Idling voltage IO = 0 A Line regulation IO = IO max 10 mV Load regulation IO = 0.1 …1.0 ´ IO max, VI = 26 V 35 mV ttr Load transient recovery time Vtr Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time IO = 0.1 …1.0 ´ IO max 100 IO=0.1 … 1.0 ´ IO max , VI = 26 V load step = 0.5× IOmax IO =IO max, TC <TC max I O= 0.1…1.0 ´ IO max 150 +200 mV –300 mV see PKG 2410 Temperature characteristics 0.1 …0.9 ´ VO 10 From VI connection to VO = 0.9 ´ VOi 15 ts Start-up time IO Output current PO max Max output power3) Calculated value Ilim Current limiting threshold TC < TC max Isc Short circuit current VO =0.2 … 0.5 V, TA = 25°C VO ac Output ripple & noise IO =IO max 15 14 46 A 18 A 60 0.60…30 MHz 2) 3) Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) OVP Over voltage protection I O > 0.1 × I O max A W 14.4 SVR ms ms 0 20 Hz …5 MHz 1) ms 45 100 mVp-p 70 dBmV dB 4 V See Operating information. Temperature coefficient is positive at low temperatures and negative at high temperatures. See also Typical Characteristics, Power derating. Miscellaneous Characteristics Conditions h Efficiency IO = IO max, VI = 26 V 79.5 % Pd Power dissipation IO = IO max, VI = 26 V 12 W EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 min typ max Unit 5 PKG 2611 PI TC = – 30 …+ 90°C, VI = 19…36 V unless otherwise specified. Output Output 1 Characteristics Unit Conditions Output voltage initial setting and accuracy Output adjust range1) ttr Vtr typ max 5.12 5.15 5.18 V 4.60 5.60 V 5.05 5.25 V 5.80 V TC = +25°C, IO = IOmax, VI = 26 V VOi VO min Output voltage tolerance band Long term drift included Idling voltage IO = 0 A Line regulation IO = IO max 10 mV Load regulation IO = 0.1 …1.0 ´ IO max, VI = 26 V 30 mV IO = 0.1 …1.0 ´ IO max Load transient recovery time Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time 100 IO=0.1 … 1.0 ´ IO max , VI = 26 V load step = 0.5× IOmax IO =IO max, TC <TC max I O= 0.1…1.0 ´ IO max ms +350 mV –500 mV see PKG 2611 Temperature characteristics 0.1 …0.9 ´ VO 10 From VI connection to VO = 0.9 ´ VOi 20 ts Start-up time IO Output current PO max Max output power3) Calculated value Ilim Current limiting threshold TC < TC max Isc Short circuit current VO =0.2 … 0.5 V, TA = 25°C VO ac Output ripple & noise IO =IO max 0 15 12 A 17 50 0.60…30 MHz Supply voltage rejection (ac) f = 100 Hz sine wave, 1 Vp-p, VI = 26 V (SVR = 20 log (1 Vp-p/VO p-p)) OVP Over voltage protection I O > 0.1 × I O max A W 12.1 SVR ms ms 60 20 Hz …5 MHz 1) 150 A 100 mVp-p 80 dBmV 50 dB 6 V See Operating information. Temperature coefficient is positive at low temperatures and negative at high temperatures. See also Typical Characteristics, Power derating. 2) 3) Miscellaneous Characteristics Conditions h Efficiency IO = IO max, VI = 26 V 84 % Pd Power dissipation IO = IO max, VI = 26 V 11.5 W 6 min typ max Unit EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 PKG 2623 PI TC = –30…+90°C, VI = 19…36 V unless otherwise specified. IO1 nom = 2.5 A, IO2 nom = 2.5 A. Output Output 2 Output 1 Characteristics Conditions Unit Output voltage initial setting and accuracy Output adjust range1) ttr Vtr typ max min typ max 11.98 12.10 12.22 11.98 12.10 12.22 V 8.50 13.20 8.50 13.20 V 11.70 12.50 11.70 12.60 V 20 V TC = +25°C, IO = 2.5 A, VI = 26 V VOi VO min Output voltage tolerance band Long term drift included Idling voltage IO = 0 A IO = 0.1 …1.0 ´ IO nom IO1 = IO2 12.95 Line regulation IO = IO nom Load regulation IO 1= 0.1 …1.0 ´ IO 1nom, IO 2= IO 2nom, VI = 26 V Load transient recovery time VI = 19…36 V IO=0.1 …1.0 ´ IO nom, VI = 26 V load step = 0.5× IOnom, IO1 = IO2 10 mV 10 mV 100 100 ms +500 +500 mV –850 –850 mV Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time IO =IO nom, TC <TC max I O= 0.1…1.0 ´ IO nom see PKG 2623 Temperature characteristics 0.1 …0.9 ´ VO 15 15 ms From VI connection to VO = 0.9 ´ VOi 25 25 ms 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 current VO =0.2 …0.5 V, TA = 25°C, RSC >0.1W VO ac Output ripple & noise IO = IO nom 0 4.0 0 4.0 60 A W min 1.05 × PO max4) 6 20 Hz … 5 MHz 60 0.60…30 MHz 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)) OVP Over voltage protection I O > 0.1 × I O max 6 150 A 60 75 43 43 150 mVp-p 75 dBmV dB 15 V 1) See Operating information. Temperature coefficient is positive at low temperatures and negative at high temperatures. 3) See also Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous Characteristics Conditions h Efficiency IO = IO max, VI = 26 V 88 % Pd Power dissipation IO = IO max, VI = 26 V 8.2 W EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 min typ max Unit 7 PKG 2625 PI TC = –30…+90°C, VI = 19…36 V unless otherwise specified. IO1 nom = 2.0 A, IO2 nom = 2.0 A. Output Output 2 Output 1 Characteristics VOi Output voltage initial setting and accuracy Unit Conditions ttr Vtr IO = 0.1 …1.0 ´ IO nom IO1 = IO2 Output voltage tolerance band Long term drift included Idling voltage IO = 0 A Line regulation IO = IO nom Load regulation IO 1= 0.1 …1.0 ´ IO 1nom, IO 2= IO 2nom, VI = 26 V Load transient recovery time typ max min typ max 14.90 15.00 15.10 14.90 15.00 15.10 V 10.5 16.5 10.5 16.5 V 14.20 15.65 14.20 16.10 V 26 V TC = +25°C, IO = 2.5 A, VI = 26 V Output adjust range1) VO min 17 VI = 19…36 V 10 mV 10 mV 100 100 ms +500 +500 mV –1000 –1000 mV IO=0.1 …1.0 ´ IO nom, VI = 26 V load step = 0.5× IOnom, IO1 = IO2 Load transient voltage Tcoeff Temperature coefficient2) tr Ramp-up time IO =IO nom, TC <TC max IO= 0.1…1.0 ´ IO nom see PKG 2625 Temperature characteristics 0.1 …0.9 ´ VO 5 5 ms From V I connection to VO = 0.9 ´ VOi 15 15 ms 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 current VO = 0.2 …0.5 V, TA = 25°C, RSC > 0.1W VO ac Output ripple & noise IO = IO nom 0 3.2 0 3.2 60 A W min 1.05 × PO max4) 5 60 20 Hz … 5 MHz 0.60…30 MHz 5 150 A 60 75 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)) OVP Over voltage protection I O > 0.1 × I O max 43 43 150 mVp-p 75 dBmV dB 18 V 1) See Operating information. Temperature coefficient is positive at low temperatures and negative at high temperatures. 3) See also Typical Characteristics, Power derating. 4) I lim on each output is set by the total load. 2) Miscellaneous Characteristics Conditions h Efficiency IO = IO max, VI = 26 V 88 % Pd Power dissipation IO = IO max, VI = 26 V 8.2 W 8 min typ max Unit EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 Typical Characteristics PKG 2410 PI Efficiency (typ) Output characteristic (typ) Power derating 60 Max output power (W) Efficiency (%) 100 90 80 70 19 V 36 V 3 9 6 12 ss 45 30 15 ss 0 15 -45 Load current (A) -30 +100 +85 Case temperature (°C) +115 Dynamic load response (typ) Temperature characteristics A. Maximum deviation DVO < 0.1×VOi Recover time tr <100 ms The output voltage deviation is determined by the load transient (dI/dt) 0.2 V/div B. Load change: 0.25×I O nom…0.75×I O…0.25×I O nom IOnom = I O1nom + IO2nom dI/dt » 5 A/ms 6 A/div 0.2 ms/div PKG 2611 PI Efficiency (typ) Output characteristic (typ) Power derating 80 5.8 100 ss 19 V 36 V 80 70 3 6 9 12 Load current (A) Temperature characteristics 15 Max output power (W) Output voltage (V) Efficiency (%) 60 90 5.4 40 5.0 4.6 20 0 0 10 5 15 Load current (A) 20 -45 -30 ss +90 +100 +115 Case temperature (°C) Dynamic load response (typ) 0.2 V/div 6 A/div A. Maximum deviation DVO < 0.1×VOi Recover time tr <100 ms The output voltage deviation is determined by the load transient (dI/dt) B. Load change: 0.25×I O nom…0.75×I O…0.25×I O nom IOnom = I O1nom + IO2nom dI/dt » 5 A/ms 0.2 ms/div EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 9 PKG 2623 PI Efficiency (typ) 90 Output characteristic (typ) Power derating 80 13 19 V 70 60 0.5 1.0 1.5 2.0 Load current (A) IO1 = I O2 Temperature characteristics 2.5 ss 60 Max output power (W) Output voltage (V) Efficiency (%) Output 1 36 V 80 12 40 Output 2 11 10 20 0 0 0.75 1.5 2.25 -45 3 -30 ss +90 +100 +115 Case temperature (°C) Load current Output 1 (A)IO2 = IO2nom Dynamic load response (typ)1) 0.5 V/div 3 A/div A. Maximum deviation DVO < 0.1×VOi Recover time tr <100 ms The output voltage deviation is determined by the load transient (dI/dt) B. Load change: 0.25×I O nom…0.75×I O…0.25×I O nom IOnom = IO1nom + IO2nom dI/dt » 5 A/ms 1) Outputs paralleled. 0.2 ms/div PKG 2625 PI Efficiency (typ) Output characteristic (typ) Power derating 80 ss Max output power (W) 60 40 20 0 -45 -30 ss +90 +100 +115 Case temperature (°C) Temperature characteristics Dynamic load response (typ)1) A. Maximum deviation DVO < 0.1×VOi Recover time tr <100 ms The output voltage deviation is determined by the load transient (dI/dt) B. Load change: 0.25×I O nom…0.75×I O…0.25×I O nom IOnom = IO1nom + IO2nom dI/dt » 5 A/ms 1) 10 Outputs paralleled. EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 EMC Specifications The PKG power module is mounted on a double sided printed circuit board (PB) with ground plane during EMC measurements. The fundamental switching frequency is 510 kHz ±5% @ VI = 26 V, IO = (0.1...1.0) × IO max. Conducted EMI Input terminal value (typ) Radiated EMS (Electro-Magnetic Fields) Radiated EMS is measured according to test methods in IEC Standard publ. 801-3. No deviation outside the VO tolerance band will occur under the following conditions: Frequency range 0.01...200 MHz 200...1,000 MHz 1...12 GHz dBmV 100 Voltage level 3 Vrms/m 3 Vrms/m 10 Vrms/m 90 80 EFT 70 AV 60 50 40 30 Electrical Fast Transients on the input terminals may cause output deviations outside what is tolerated by the electronic circuits, i.e. ±5%. The PKG power module can withstand EFT levels of 0.5 kV keeping VO within the tolerance band and 2.0 kV without destruction. Tested according to IEC publ. 801-4. 20 10 Output Ripple & Noise (VOac) 0 0.15 1 10 Test Set-up according to CISPR publ. 1A. Supply mains 5 mH/ 50 W Network PKG 30 MHz Output ripple is measured as the peak to peak voltage of the fundamental switching frequency. L o a d 1m Spectrum analyzer EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 11 Operating information Output Voltage Adjust (Vadj) Remote Control (RC) Remote turn-on and 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 PKG power module turns off. To ensure safe turnoff the voltage difference between pin 1 and 3 shall be less than 1.0 V. RC is TTL open collector compatible (see fig. 1). The utput voltage, VO, can be adjusted by using an external resistor. A 0.1 MW resistor will change VO approximately 5%. 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). Maximum Capacitive Load The PKG series has no limitation of maximum connected capacitance on the output. The power module may operate in current limiting mode during start-up, affecting the ramp-up and the start-up time. For optimum performance we recommend maximum 100 mF/A of IO for dual outputs. Connect capacitors at the point of load for best performance. PKG RC (pin 1) TTL Parallel Operation -In (pin 3) Fig. 1 Over Voltage Protection (OVP) The PKG series has an internal Over Voltage Protection circuitry. The circuitry will detect over voltage conditions on the output and stop the power module operation. During OVP conditions there are continuous attempts to start up (non-latching mode). If latching mode is preferred an external circuit can be used to change the function and make the output remain in off mode after over voltage detection. (The OVP level can be found in the output data section.) The load regulation characteristic and temperature coefficient of the PKG DC/DC Power Modules are designed to allow parallel operation. Paralleling of several modules is easily accomplished by connection of the output voltage terminal pins. The connections should be symmetrical, i.e. the resistance between the output terminal and the common connection point of each module should be equal. Good paralleling performance is achieved if you allow the resistance to be 10 mW. 10 mW equals 50 mm (2 in) of 35 mm (1 oz/ft2) copper with a trace width of 2.5 mm (0.1 in). It is recommended not to exceed PO =n × 0.8 × PO max, where PO max is the maximum power module output power and n the number of paralleled units, not to overload any of them and thereby decrease the reliability performance. Paralleling performance may be further improved by voltage matching. Voltage matching is accomplished by using the Output Adjust function and trim the outputs to the same voltage. +VI (pin 4) Current Limiting Protection 62k Reset The output power is limited at loads above the output current limiting threshold (Ilim), specified as a minimum value. 6.8k RC (pin 1) 22k 2.7 V 1k Input and Output Impedance 10k 10mF 10k -VI (pin 3) Fig. 2 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. Turn-on/off Input Voltage (TOA) The power module monitors the input voltage and will turn on and turn off at predetermined levels. The levels can be decreased by means of an external resistor connected between pin 2 and pin 4. A 0.2 MW resistor will decrease the turn-off input voltage approximately 10%. 12 EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, May 2000 Quality Reliability Meantime between failure (MTBF) is calculated to >1.7 million hours at full output power and a case temperature of +75°C (TA = +40 °C), using the Ericsson failure rate data system. The Ericsson failure rate data system is based on field failure rates and is continously updated. The data correspond 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, 6 s 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 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). 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. EN/LZT 146 03 R1A (Replaces EN/LZT 137 R5) © Ericsson Microelectronics AB, April 2000 13 Product Program VO/IO max PO max VI Output 1 24 V 1) 3.3 V/14 A1) 5 V/12 A1) 12 V/4 A 15 V/3.2 A1) Ordering No. Output 2 12 V/4 A .15 V/3.2 A 46 W 60 W 60 W 60 W PKG PKG PKG PKG 2410 2611 2623 2625 PI PI PI PI Adjustable to 2.5V 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 The latest and most complete information can be found on our website! Data Sheet EN/LZT 146 03 R1A (Replaces EN/LZT 137 23 R5) © Ericsson Microelectronics AB, May 2000