EricssonInternal Internal Limited PRODUCT SPECIFICATION TABLE OF CONTENTS E Prepared (also (also subject subject responsible responsible ifif other) other) Prepared 1 (1) (4) 1 No. No. EAB/FC/P Maria SEC/S David Xie Rosendahl Approved Approved PKB 4000B PI EAB/FJB/GKF (Natalie Johansson) EWEIXIE 1/1301-BMR658 001 52-EN/LZT 146 384 Uen Specification Technical Checked Checked Date Date MICTOJO 2008-06-03 2008-12-15 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev Rev Reference Reference EN/LZT 146 384 R2A Dec 2008 B C (c) Ericsson Power Modules AB Key Features * Industry standard low profile Eighth-brick 58.4 x 22.7 x 10.1 mm (2.3 x 0.894 x 0.397 in.) * High efficiency, typ. 95 % at 12 V half load * 1500 Vdc input to output isolation * Meets isolation requirements equivalent to basic insulation according to IEC/EN/UL 60950 * More than 1.3 million hours MTBF General Characteristics * * * * * * * * * N+1 parallelable Input under voltage protection Over temperature protection Output over voltage protection Output short-circuit protection Remote control Optional baseplate Highly automated manufacturing ensures quality ISO 9001/14001 certified supplier Safety Approvals Design for Environment Meets requirements in hightemperature lead-free soldering processes. Contents General Information Safety Specification Absolute Maximum Ratings Product Program 5.0 V, 40 A / 200 W 12.0 V, 20 A / 240 W ............................................................. 2 ............................................................. 3 ............................................................. 4 Electrical Specification Electrical Specification EMC Specification Operating Information Thermal considerations Connections Mechanical Information Soldering Information Delivery Information Product Qualification Specification Ordering No. PKB 4201B PI ................................. 5 PKB 4204B PI ................................. 8 ........................................................... 11 ........................................................... 12 ........................................................... 13 ........................................................... 14 ........................................................... 15 ........................................................... 18 ........................................................... 19 ........................................................... 20 Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FC/P Maria Rosendahl Approved PKB 4000B PI EAB/FJB/GKF (Natalie Johansson) 1/1301-BMR658 Technical Specification Checked Date MICTOJO 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev 2 Reference EN/LZT 146 384 R2A Dec 2008 B (c) Ericsson Power Modules AB Compatibility with RoHS requirements General Information Ordering Information See Contents for individual product ordering numbers. Option Surface mount Positive Remote Control Logic Lead length 3.69 mm (0.145 in) Lead length 4.57 mm (0.180 in) Increased stand-off height Baseplate 2 (4) No. Suffix SI P LA LB M HS Ordering No. PKB 4204B SI PKB 4204B PIP PKB 4204B PILA PKB 4204B PILB PKB 4204B PIM PKB 4204B PIHS Note 1: As an example a positive logic, short pin product with baseplate would be PKB 4204 PIPHSLA. Reliability The Mean Time Between Failure (MTBF) is calculated at full output power and an operating ambient temperature (TA) of +40C, which is a typical condition in Information and Communication Technology (ICT) equipment. Different methods could be used to calculate the predicted MTBF and failure rate which may give different results. Ericsson Power Modules currently uses Telcordia SR332. Predicted MTBF for the series is: 1.3 million hours according to Telcordia SR332, issue 1, Black box technique. Telcordia SR332 is a commonly used standard method intended for reliability calculations in ICT equipment. The parts count procedure used in this method was originally modelled on the methods from MIL-HDBK-217F, Reliability Predictions of Electronic Equipment. It assumes that no reliability data is available on the actual units and devices for which the predictions are to be made, i.e. all predictions are based on generic reliability parameters. The products are compatible with the relevant clauses and requirements of the RoHS directive 2002/95/EC and have a maximum concentration value of 0.1% by weight in homogeneous materials for lead, mercury, hexavalent chromium, PBB and PBDE and of 0.01% by weight in homogeneous materials for cadmium. Exemptions in the RoHS directive utilized in Ericsson Power Modules products include: Lead in high melting temperature type solder (used to solder the die in semiconductor packages) Lead in glass of electronics components and in electronic ceramic parts (e.g. fill material in chip resistors) Lead as an alloying element in copper alloy containing up to 4% lead by weight (used in connection pins made of Brass) Quality Statement The products are designed and manufactured in an industrial environment where quality systems and methods like ISO 9000, 6 (sigma), and SPC are intensively in use to boost the continuous improvements strategy. Infant mortality or early failures in the products are screened out and they are subjected to 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 Warranty period and conditions are defined in Ericsson General Terms and Conditions of Sale. Limitation of Liability Ericsson 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). Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FC/P Maria Rosendahl Approved PKB 4000B PI EAB/FJB/GKF (Natalie Johansson) 3 (4) No. 1/1301-BMR658 Technical Specification Checked Date Rev MICTOJO 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W 3 Reference EN/LZT 146 384 R2A Dec 2008 B (c) Ericsson Power Modules AB Safety Specification General information Ericsson Power Modules DC/DC converters and DC/DC regulators are designed in accordance with safety standards IEC/EN/UL60950, Safety of Information Technology Equipment. IEC/EN/UL60950 contains requirements to prevent injury or damage due to the following hazards: * * * * * * Electrical shock Energy hazards Fire Mechanical and heat hazards Radiation hazards Chemical hazards On-board DC-DC converters and DC/DC regulators are defined as component power supplies. As components they cannot fully comply with the provisions of any Safety requirements without "Conditions of Acceptability". Clearance between conductors and between conductive parts of the component power supply and conductors on the board in the final product must meet the applicable Safety requirements. Certain conditions of acceptability apply for component power supplies with limited stand-off (see Mechanical Information for further information). It is the responsibility of the installer to ensure that the final product housing these components complies with the requirements of all applicable Safety standards and Directives for the final product. Component power supplies for general use should comply with the requirements in IEC60950, EN60950 and UL60950 "Safety of information technology equipment". There are other more product related standards, e.g. IEEE802.3af "Ethernet LAN/MAN Data terminal equipment power", and ETS300132-2 "Power supply interface at the input to telecommunications equipment; part 2: DC", but all of these standards are based on IEC/EN/UL60950 with regards to safety. Ericsson Power Modules DC/DC converters and DC/DC regulators are UL60950 recognized and certified in accordance with EN60950. The flammability rating for all construction parts of the products meets requirements for V-0 class material according to IEC 60695-11-10. The products should be installed in the end-use equipment, in accordance with the requirements of the ultimate application. Normally the output of the DC/DC converter is considered as SELV (Safety Extra Low Voltage) and the input source must be isolated by minimum Double or Reinforced Insulation from the primary circuit (AC mains) in accordance with IEC/EN/UL60950. Isolated DC/DC converters It is recommended that a slow blow fuse with a rating twice the maximum input current per selected product be used at the input of each DC/DC converter. If an input filter is used in the circuit the fuse should be placed in front of the input filter. In the rare event of a component problem in the input filter or in the DC/DC converter that imposes a short circuit on the input source, this fuse will provide the following functions: * * Isolate the faulty DC/DC converter from the input power source so as not to affect the operation of other parts of the system. Protect the distribution wiring from excessive current and power loss thus preventing hazardous overheating. The galvanic isolation is verified in an electric strength test. The test voltage (Viso) between input and output is 1500 Vdc or 2250 Vdc for 60 seconds (refer to product specification). Leakage current is less than 1 A at nominal input voltage. 24 V DC systems The input voltage to the DC/DC converter is SELV (Safety Extra Low Voltage) and the output remains SELV under normal and abnormal operating conditions. 48 and 60 V DC systems If the input voltage to the DC/DC converter is 75 Vdc or less, then the output remains SELV (Safety Extra Low Voltage) under normal and abnormal operating conditions. Single fault testing in the input power supply circuit should be performed with the DC/DC converter connected to demonstrate that the input voltage does not exceed 75 Vdc. If the input power source circuit is a DC power system, the source may be treated as a TNV2 circuit and testing has demonstrated compliance with SELV limits and isolation requirements equivalent to Basic Insulation in accordance with IEC/EN/UL60950. Non-isolated DC/DC regulators The input voltage to the DC/DC regulator is SELV (Safety Extra Low Voltage) and the output remains SELV under normal and abnormal operating conditions. Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 1 (8) No. 4 2/1301-BMR 658Technical Uen Specification Checked Date Rev (MICHORG) 2008-12-18 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Reference EN/LZT 146 384 R2A Dec 2008 D (c) Ericsson Power Modules AB Absolute Maximum Ratings Characteristics min Tref Operating Temperature (see Thermal Consideration section) TS Storage temperature VI Input voltage Viso Isolation voltage (input to output test voltage) Vtr Input voltage transient (tp 100 ms) Remote Control pin voltage (see Operating Information section) VRC typ max Unit -40 +125 C -40 +125 C -0.5 +80 V 1500 Vdc 100 V Positive logic option -0.5 15 V Negative logic option -0.5 15 V 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. Fundamental Circuit Diagram +IN RC +OUT Control -OUT Driver -IN OVP Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) 2 (8) No. EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 5 2/1301-BMR 658Technical Uen Specification Checked Date (MICHORG) 2008-12-18 Rev Reference EN/LZT 146 384 R2A Dec 2008 D Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W (c) Ericsson Power Modules AB 5 V, 40 A / 200 W Electrical Specification PKB 4201B PI Tref = -30 to +90 C, VI = 36 to 75 V, unless otherwise specified under Conditions. Typical values given at: Tref = +25 C, VI= 53 V, max IO, unless otherwise specified under Conditions. Characteristics Conditions min VI Input voltage range VIoff Turn-off input voltage Decreasing input voltage 32 VIon Turn-on input voltage Increasing input voltage 33 CI Internal input capacitance PO Output power Efficiency Typ 36 max Unit 75 V 33 35 V 35 36 V F 11 VI = 75 V 0 194 VI = 53 V 0 194 VI = 36 V 0 W 194 50 % of max IO , VI = 53 V 94.5 max IO , VI = 53 V 94.0 % Pd Power Dissipation max IO 12 Pli Input idling power IO = 0 A, VI = 53 V 4 W PRC Input standby power VI = 53 V (turned off with RC) 0.12 W fs Switching frequency 0-100 % of max IO 180 kHz VOi VO Output voltage initial setting and Tref = +25 C, VI = 53 V, IO = 20 A accuracy 0-100 % of max IO, Output voltage tolerance band VI = 36 V to 75 V, see Note 3 Idling voltage IO = 0 A Line regulation VI = 36 V to 75 V Load regulation VI = 53 V, 0-100 % of max IO Vtr Load transient voltage deviation ttr Load transient recovery time tr ts tf tRC Start-up time 5.0 4.5 4.75 0.1 1 5 (from VI off to 10 % of VO) VI shut-down fall time max IO, see Note 1 IO = 0 A, see Note 1 RC start-up time max IO, see Note 1 & 2 V V V 0.4 V 0.27 V 0.06 ms 4 7 ms 10 14 ms 0.5 16 ms 7 ms ms RC shut-down fall time max IO, see Note 1 0.3 (from RC off to 10 % of VO) IO = 0 A, see Note 1 16 IO Output current Ilim Current limit threshold Isc Short circuit current Tref = 25 C Cout Recommended Capacitive Load Tref = 25C, see Note 4 VOac Output ripple & noise See ripple & noise section, max IO OVP Input over voltage protection Output over voltage protection 0 Tref < max Tref Note 1: A 1 mF external output capacitance was used (ESR approx. 20 mohm). Note 2: At ramp up with low load will the output voltage have a negative slope during a short time. Note 4: Low ESR type. 5.5 0-100 % of max IO, see Note 1 & 2 (from VI connection to 90 % of VOi) Note 3: Negative temperature coefficient: -3 mV/C. V 5.5 0.25 W 5.1 0.04 VI = 53 V, Load step 50-75-50 % of max IO, di/dt = 1 A/s, see Note 1 Ramp-up time (from 10-90 % of VOi) 4.9 18 42 50 s s 40 A 65 A 53 A 1000 F 110 79 7.3 220 mVp-p V Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) 3 (8) No. EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 6 2/1301-BMR 658Technical Uen Specification Checked Date Rev (MICHORG) 2008-12-18 Reference EN/LZT 146 384 R2A Dec 2008 D Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W (c) Ericsson Power Modules AB 5 V, 40 A / 200 W Typical Characteristics Efficiency Power Dissipation [%] [W] 100 20 95 36 V 48 V 90 53 V 75 V 85 15 36 V 48 V 10 53 V 75 V 5 0 80 0 10 20 30 0 40 [A] Efficiency vs. load current and input voltage at Tref = +25 C 10 20 30 40 [A ] Dissipated power vs. load current and input voltage at Tref = +25 C Output Current Derating, open frame Output Current Derating, base plate option [A ] 40 [A] 40 3.0 m/s 30 3.0 m/s 30 2.0 m/s 2.0 m/s 1.5 m/s 20 1.0 m/s 1.5 m/s 20 1.0 m/ s 0.5 m/s 0.5 m/s 10 Nat. Conv. 10 Nat. Conv. 0 0 0 20 40 60 80 0 100 [C] Available load current vs. ambient air temperature and airflow at VI = 53 V. See Thermal Consideration section. 20 40 60 80 100 [C] Available load current vs. ambient air temperature and airflow at VI = 53 V. See Thermal Consideration section. Output Characteristics Current Limit Characteristics [V] [V] 5.50 5.5 5.25 36 V 48 V 5.00 5.0 36 V 48 V 4.5 53 V 53 V 75 V 4.75 75 V 4.0 3.5 4.50 0 10 20 30 Output voltage vs. load current at Tref = +25 C 40 [A] 40 44 48 52 56 60 [A ] Output voltage vs. load current at IO > max IO , Tref = +25 C Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 2/1301-BMR 658Technical Uen Specification Checked Date (MICHORG) 2008-12-18 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev Start-up EN/LZT 146 384 R2A Dec 2008 D (c) Ericsson Power Modules AB Output Ripple & Noise Output voltage ripple at: Tref = +25 C, VI = 53 V, IO = 40 A resistive load. PKB 4201B PI Shut-down Top trace: output voltage (2 V/div.). Bottom trace: input voltage (50 V/div.). Time scale: (5 ms/div.). Shut-down enabled by disconnecting VI at: Tref = +25 C, VI = 53 V, IO = 40 A resistive load. Cout = 1 mF. Top trace: output voltage (2 V/div.). Bottom trace: input voltage (50 V/div.). Time scale: (1 ms/div.). Output Load Transient Response Trace: output voltage (50 mV/div.). Time scale: (2 s/div.). 7 Reference 5 V, 40 A / 200 W Typical Characteristics Start-up enabled by connecting VI at: Tref = +25 C, VI = 53 V, IO = 40 A resistive load. Cout = 1 mF. 4 (8) No. Output voltage response to load current step- Top trace: output voltage (0.5 V/div.). change (20-30-20 A) at: Bottom trace: load current (20 A/div.). Tref =+25 C, VI = 53 V, Cout = 1 mF. Time scale: (0.1 ms/div.). Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) 5 (8) No. EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 8 2/1301-BMR 658Technical Uen Specification Checked Date Rev (MICHORG) 2008-12-18 Reference EN/LZT 146 384 R2A Dec 2008 D Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W (c) Ericsson Power Modules AB 12 V, 20 A / 240 W Electrical Specification PKB 4204B PI Tref = -30 to +90 C, VI = 36 to 75 V, unless otherwise specified under Conditions. Typical values given at: Tref = +25 C, VI= 53 V, max IO, unless otherwise specified under Conditions. Characteristics Conditions min Typ max Unit VI Input voltage range 75 V VIoff Turn-off input voltage Decreasing input voltage 32 33 35 V VIon Turn-on input voltage Increasing input voltage 33 35 36 V CI Internal input capacitance VI = 75 V 0 234 VI = 53 V 0 234 VI = 36 V 0 PO Output power Efficiency Pd Power Dissipation 36 F 11 W 220 50 % of max IO , VI = 53 V 95.5 max IO , VI = 53 V 94.5 max IO 13.5 % 23 W Pli Input idling power IO = 0 A, VI = 53 V 3 W PRC Input standby power VI = 53 V (turned off with RC) 0.1 W fs Switching frequency 0-100 % of max IO 180 kHz VOi VO Output voltage initial setting and Tref = +25 C, VI = 53 V, IO = 10 A accuracy 0-100 % of max IO, Output voltage tolerance band VI = 38 V to 75 V, see Note 1 Idling voltage Line regulation VI = 38 V to 75 V, see Note 2 Load regulation VI = 53 V, 0-100 % of max IO Vtr Load transient voltage deviation ttr Load transient recovery time tr ts tf tRC IO IO = 0 A Start-up time 12.15 V 10.8 12.6 V 11.4 12.6 V 12.00 0.9 V 0.2 0.3 VI = 53 V, Load step 50-75-50 % of max IO, di/dt = 1 A/s, see Note 3 Ramp-up time (from 10-90 % of VOi) 11.85 0.6 V 0.4 V 0.25 ms 2 5.5 9 ms 6 11 16 ms 0-100 % of max IO (from VI connection to 90 % of VOi) VI shut-down fall time max IO IO = 0 A 0.1 0.35 ms (from VI off to 10 % of VO) RC start-up time max IO 8 ms RC shut-down fall time max IO 0.1 ms (from RC off to 10 % of VO) IO = 0 A Output current 0.35 0 Current limit threshold Tref < max Tref 21 Cout Recommended Capacitive Load Tref = 25C 0 Isc Short circuit current Tref = 25 C 29 VOac Output ripple & noise See ripple & noise section, max IO 80 OVP Input over voltage protection Output over voltage protection Note 2: At VI = 36 V to 75 V is the typical value 0.6 V. Note 3: A 220 F external output capacitance was with low ESR was used. s 20 Ilim Note 1: At VI = 36 V to 38 V is the lower limit 10.5 V. s 27 33 A A F 79 13.5 A 240 mVp-p V Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) 6 (8) No. EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 9 2/1301-BMR 658Technical Uen Specification Checked Date Rev (MICHORG) 2008-12-18 Reference EN/LZT 146 384 R2A Dec 2008 D Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W (c) Ericsson Power Modules AB 12 V, 20 A / 240 W Typical Characteristics PKB 4204B PI Efficiency Power Dissipation [%] [W] 100 20 95 36 V 38 V 90 15 36 V 38 V 10 53 V 75 V 85 53 V 75 V 5 0 80 0 5 10 15 0 20 [A] Efficiency vs. load current and input voltage at Tref = +25 C 5 10 15 20 [A] Dissipated power vs. load current and input voltage at Tref = +25 C Output Current Derating, open frame Output Current Derating, base plate option [A] 20 [A] 20 3.0 m/s 15 2.0 m/s 3.0 m/s 15 2.0 m/s 1.5 m/s 1.5 m/s 10 1.0 m/s 10 1.0 m/s 0.5 m/s 0.5 m/s 5 Nat. Conv. 0 5 Nat. Conv. 0 0 20 40 60 80 0 100 [C] Available load current vs. ambient air temperature and airflow at VI = 53 V. See Thermal Consideration section. 20 40 60 80 100 [C] Available load current vs. ambient air temperature and airflow at VI = 53 V. See Thermal Consideration section. Output Characteristics Current Limit Characteristics [V] [V] 13.0 14 12.5 36 V 12.0 12 36 V 38 V 11.5 53 V 11.0 38 V 10 53 V 75 V 75 V 8 10.5 10.0 0 5 10 15 20 [A] 6 20 Output voltage vs. load current at Tref = +25 C 22 24 26 28 30 [A] Output voltage vs. load current at IO > max IO , Tref = +25 C Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GMG Tord Johansson Approved PKB 4000B(Magnus PI EAB/FJB/GM Broman) 2/1301-BMR 658Technical Uen Specification Checked Date (MICHORG) 2008-12-18 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev Start-up EN/LZT 146 384 R2A Dec 2008 D (c) Ericsson Power Modules AB Output Ripple & Noise Output voltage ripple at: Tref = +25 C, VI = 53 V, IO = 20 A resistive load. PKB 4204B PI Shut-down Top trace: output voltage (5 V/div). Bottom trace: input voltage (50 V/div). Time scale: (5 ms/div). Shut-down enabled by disconnecting VI at: Tref = +25 C, VI = 53 V, IO = 20 A resistive load. Top trace: output voltage (5 V/div.). Bottom trace: input voltage (50 V/div.). Time scale: (0.1 ms/div.). Output Load Transient Response Trace: output voltage (50 mV/div). Time scale: (2 s/div.). 10 Reference 12 V, 20 A / 240 W Typical Characteristics Start-up enabled by connecting VI at: Tref = +25 C, VI = 53 V, IO = 20 A resistive load. 7 (8) No. Output voltage response to load current step- Top trace: output voltage (0.5 V/div.). change (10-15-10 A) at: Bottom trace: load current (5 A/div). Tref =+25 C, VI = 53 V, Cout = 220 F. Time scale: (0.1 ms/div.). Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GKJ Tord Johansson Approved PKB 4000B PI EAB/FJB/GKG (Magnus Broman) 1 (5) No. Checked (MICMROS) 3/1301-BMR 658Technical Uen Specification Date Rev 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W 11 Reference EN/LZT 146 384 R2A Dec 2008 A (c) Ericsson Power Modules AB EMC Specification Conducted EMI measured according to EN55022, CISPR 22 and FCC part 15J (see test set-up). See Design Note 009 for detailed information. The fundamental switching frequency is 180 kHz for PKB 4204B PI @ VI = 53 V, max IO. Conducted EMI Input terminal value (typ) Test set-up Layout recommendation EMI without filter External filter (class B) Required external input filter in order to meet class B in EN 55022, CISPR 22 and FCC part 15J. Components: C1,2,3 = 1 F (100 V, ceramic) C4,5 = 2.2 nF (2 kV, ceramic) The radiated EMI performance of the DC/DC converter will depend on the PCB layout and ground layer design. It is also important to consider the stand-off of the DC/DC converter. If a ground layer is used, it should be connected to the output of the DC/DC converter and the equipment ground or chassis. A ground layer will increase the stray capacitance in the PCB and improve the high frequency EMC performance. Output ripple and noise Output ripple and noise measured according to figure below. See Design Note 022 for detailed information. C6 = 220 F (100 V, electrolytic) Ceramic Capacitor L1,2 = 809 H (common mode) Tantalum Capacitor +Vout 0.1uF + 10uF -Vout *Conductor from Vout to capacitors = 50mm [1.97in.] Output ripple and noise test setup EMI with filter BNC Connector to Scope Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GKJ Tord Johansson Approved PKB 4000B PI EAB/FJB/GKG (Magnus Broman) 2 (5) No. Checked (MICMROS) 3/1301-BMR 658Technical Uen Specification Date 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Operating information Input Voltage The input voltage range 36 to 75 Vdc meets the requirements of the European Telecom Standard ETS 300 132-2 for normal input voltage range in --48 and --60 Vdc systems, -40.5 to -57.0 V and --50.0 to -72 V respectively. At input voltages exceeding 75 V, the power loss will be higher than at normal input voltage and Tref must be limited to absolute max 125 C. The absolute maximum continuous input voltage is 80 Vdc. Turn-off Input Voltage The DC/DC converters monitor the input voltage and will turn on and turn off at predetermined levels. The minimum hysteresis between on and off input voltage is 1.0 V. Rev 12 Reference EN/LZT 146 384 R2A Dec 2008 A (c) Ericsson Power Modules AB load changes while the electrolytic capacitors are used to handle low frequency dynamic load changes. Ceramic capacitors will also reduce any high frequency noise at the load. It is equally important to use low resistance and low inductance PCB layouts and cabling. For semi regulated DC/DC converters, such as PKB-B intermediate bus converters, there is no limit on the value of output capacitance that may be used. The user should be aware, however, that large values of capacitance will affect the ramp-up time of the DC/DC converter output voltage during start-up. For further information please contact your local Ericsson Power Modules representative. Parallel Operation The converters can be paralleled for redundancy if external oring diodes are used in series with the outputs. Over Temperature Protection (OTP) Remote Control (RC) The products are fitted with a remote control function referenced to the primary negative input connection (- In), with positive logic option available. The RC function allows the product to be turned on/off by an external device like a semiconductor or mechanical switch. The RC pin has an internal pull up resistor to + In. The maximum required sink current is less than 1 mA. When the RC pin is left open, the voltage generated on the RC pin is 5-10 V. The second option is "positive logic" remote control, which can be ordered by adding the suffix "P" to the end of the part number. The DC/DC converter will turn on when the input voltage is applied with the RC pin open. Turn off is achieved by connecting the RC pin to the - In. To ensure safe turn off the voltage difference between RC pin and the - In pin shall be less than 1 V. The DC/DC converter will restart automatically when this connection is opened. Input and Output Impedance The impedance of both the input source and the load will interact with the impedance of the DC/DC converter. It is important that the input source has low characteristic impedance. Minimum recommended external input capacitance is 220 F. The performance in some applications can be enhanced by addition of external capacitance as described under External Decoupling Capacitors. External Decoupling Capacitors When powering loads with significant dynamic current requirements, the voltage regulation at the point of load can be improved by addition of decoupling capacitors at the load. The most effective technique is to locate low ESR ceramic and electrolytic capacitors as close to the load as possible, using several parallel capacitors to lower the effective ESR. The ceramic capacitors will handle high-frequency dynamic The DC/DC converters are protected from thermal overload by an internal over temperature shutdown circuit. When Tref as defined in thermal consideration section exceeds 125C the DC/DC converter will shut down. The DC/DC converter will make continuous attempts to start up (non-latching mode) and resume normal operation automatically when the temperature has dropped below the temperature threshold. Over Voltage Protection (OVP) The DC/DC converters have an output over voltage protection that normally will clamp the output voltage to the OVP threshold level. If the output voltage should increase to the OVP threshold level very fast then the DC/DC converter can shut down and make attempts to start up (non-latching mode). After removal of the over voltage condition the DC/DC converter will resume to normal operation automatically. Over Current Protection (OCP) The DC/DC converters include current limiting circuitry for protection at continuous overload. The output voltage will decrease towards zero for output currents in excess of max output current (max IO). The DC/DC converter will resume normal operation after removal of the overload. The load distribution should be designed for the maximum output short circuit current specified. Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) EAB/FJB/GKJ Tord Johansson Approved PKB 4000B PI EAB/FJB/GKG (Magnus Broman) Checked (MICMROS) 3/1301-BMR 658Technical Uen Specification Date 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Thermal Consideration General The products are designed to operate in different thermal environments and sufficient cooling must be provided to ensure reliable operation. For products mounted on a PCB without a heat sink attached cooling is achieved mainly by conduction, from the pins to the host board, and convection, which is dependant on the airflow across the product. Increased airflow enhances the cooling of the converter. The Output Current Derating graph found in the Output section for each model provides the available output current vs. ambient air temperature and air velocity at Vin = 53 V. The product is tested on a 254 x 254 mm, 35 m (1 oz), 16-layer test board mounted vertically in a wind tunnel with a cross-section of 305 x 305 mm. Proper cooling of the DC/DC converter can be verified by measuring the temperature at positions P1, P2, P3, P4 and P5. The temperature at these positions should not exceed the max values provided in the table below. The number of points may vary with different thermal design and topology. Base plate See Design Note 019 for detailed information. Position Description Max value P1 P2 P3 P5 P6 P7 Reference point (Tref) Transistor Optocoupler Reference point (Tref) Transistor Base plate 125 C 125 C 100 C 125 C 125 C 105 C Open frame 3 (5) No. Rev Reference EN/LZT 146 384 R2A Dec 2008 A (c) Ericsson Power Modules AB 13 Ericsson Internal PRODUCT SPECIFICATION E Prepared (also subject responsible if other) 4 (5) No. EAB/FJB/GKJ Tord Johansson Approved PKB 4000B PI EAB/FJB/GKG (Magnus Broman) Checked (MICMROS) 3/1301-BMR 658Technical Uen Specification Date 2008-06-03 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Connections Pin 1 Designation +In Function Positive input 2 RC Remote control 3 -In Negative input 4 -Out Negative output 5 +Out Positive output Rev Reference EN/LZT 146 384 R2A Dec 2008 A (c) Ericsson Power Modules AB 14 Ericsson Confidential PRODUCT SPEC. MECHANICAL E Prepared (also subject responsible if other) EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 1 (4) No. 4/1301-BMR 658Technical Uen Specification Checked Date See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Mechanical Information - Hole Mount, Open Frame Version Rev Reference EN/LZT 146 384 R2A Dec 2008 C (c) Ericsson Power Modules AB 15 Ericsson Confidential PRODUCT SPEC. MECHANICAL E Prepared (also subject responsible if other) EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 2 (4) No. 4/1301-BMR 658Technical Uen Specification Checked Date See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Mechanical Information - Hole Mount, Base Plate Version Rev Reference EN/LZT 146 384 R2A Dec 2008 C (c) Ericsson Power Modules AB 16 Ericsson Confidential PRODUCT SPEC. MECHANICAL E Prepared (also subject responsible if other) EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 3 (4) No. 4/1301-BMR 658Technical Uen Specification Checked Date See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Mechanical Information - Surface Mount Version Rev Reference EN/LZT 146 384 R2A Dec 2008 C (c) Ericsson Power Modules AB 17 Ericsson Confidential PRODUCT SPEC. E Prepared (also subject responsible if other) 1 (4) No. EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 5/1301- BMR 658Technical Uen Specification Checked Date Rev See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W 18 Reference EN/LZT 146 384 R2A Dec 2008 B (c) Ericsson Power Modules AB Soldering Information - Surface Mounting Lead-free (Pb-free) solder processes The surface mount product is intended for forced convection or vapor phase reflow soldering in SnPb and Pb-free processes. For Pb-free solder processes, a pin temperature (TPIN) in excess of the solder melting temperature (TL, 217 to 221C for SnAgCu solder alloys) for more than 30 seconds and a peak temperature of 235C on all solder joints is recommended to ensure a reliable solder joint. The reflow profile should be optimised to avoid excessive heating of the product. It is recommended to have a sufficiently extended preheat time to ensure an even temperature across the host PCB and it is also recommended to minimize the time in reflow. A no-clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board, since cleaning residues may affect long time reliability and isolation voltage. Minimum Pin Temperature Recommendations Pin number 4 is chosen as reference location for the minimum pin temperature recommendation since this will likely be the coolest solder joint during the reflow process. SnPb solder processes For SnPb solder processes, a pin temperature (TPIN) in excess of the solder melting temperature, (TL, 183C for Sn63Pb37) for more than 30 seconds and a peak temperature of 210C is recommended to ensure a reliable solder joint. For dry packed products only: depending on the type of solder paste and flux system used on the host board, up to a recommended maximum temperature of 245C could be used, if the products are kept in a controlled environment (dry pack handling and storage) prior to assembly. General reflow process specifications SnPb eutectic Pb-free Average ramp-up (TPRODUCT) 3C/s max 3C/s max 183C 221C Typical solder melting (liquidus) temperature TL Minimum reflow time above TL 30 s 30 s Minimum pin temperature TPIN 210C 235C Peak product temperature TPRODUCT Maximum Product Temperature Requirements Top of the product PCB near pin 2 is chosen as reference location for the maximum (peak) allowed product temperature (TPRODUCT) since this will likely be the warmest part of the product during the reflow process. SnPb solder processes For SnPb solder processes, the product is qualified for MSL 1 according to IPC/JEDEC standard J-STD-020C. During reflow TPRODUCT must not exceed 225 C at any time. Pb-free solder processes For Pb-free solder processes, the product is qualified for MSL 3 according to IPC/JEDEC standard J-STD-020C. During reflow TPRODUCT must not exceed 260 C at any time. Dry Pack Information Products intended for Pb-free reflow soldering processes are delivered in standard moisture barrier bags according to IPC/JEDEC standard J-STD-033 (Handling, packing, shipping and use of moisture/reflow sensitivity surface mount devices). Using products in high temperature Pb-free soldering processes requires dry pack storage and handling. In case the products have been stored in an uncontrolled environment and no longer can be considered dry, the modules must be baked according to J-STD-033. Thermocouple Attachment 225C 260C Average ramp-down (TPRODUCT) 6C/s max 6C/s max Maximum time 25C to peak 6 minutes 8 minutes Top of PCB near pin 2 for measurement of maximum product temperature, TPRODUCT Temperature TPRODUCT maximum TPIN minimum Pin profile TL Product profile Time in reflow Time in preheat / soak zone Time 25C to peak Time Pin 4 for measurement of minimum pin (solder joint) temperature, TPIN Ericsson Confidential PRODUCT SPEC. E Prepared (also subject responsible if other) EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 2 (4) No. 5/1301- BMR 658Technical Uen Specification Checked Date See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev Reference EN/LZT 146 384 R2A Dec 2008 B (c) Ericsson Power Modules AB Soldering Information - Hole Mounting Delivery Package Information The hole mounted product is intended for plated through hole mounting by wave or manual soldering. The pin temperature is specified to maximum to 270C for maximum 10 seconds. Hole Mount, Open Frame version Hole Mount, Base Plate version The products are delivered in antistatic trays. A maximum preheat rate of 4C/s and maximum preheat temperature of 150C is suggested. When soldering by hand, care should be taken to avoid direct contact between the hot soldering iron tip and the pins for more than a few seconds in order to prevent overheating. A no-clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board. The cleaning residues may affect long time reliability and isolation voltage. Delivery Package Information Surface Mount Version The products are delivered in antistatic injection molded trays (Jedec design guide 4.10D standard). Tray Specifications Material Antistatic PPE Surface resistance Tray thickness 105 < Ohm/square < 1012 The trays can be baked at maximum 125C for 48 hours 17.4 mm [0.685 inch] Box capacity 100 products (5 full trays/box) Tray weight 120 g empty, 640 g full tray Bakability Tray Specifications Material PE Foam Surface resistance 105 < Ohm/square < 1012 Bakability The trays are not bakeable Tray thickness 22 mm [0.87 inch] Box capacity 75 products (3 full trays/box) Open frame version 40 g empty, 690 g full tray Base plate version 40 g empty, 1165 g full tray Tray weight 19 Ericsson Confidential PRODUCT SPEC. E Prepared (also subject responsible if other) 3 (4) No. EXXUYNG Approved PKB 4000B PI SEC/D (Betty Wu) 5/1301- BMR 658Technical Uen Specification Checked Date See 1 2008-11-27 Intermediate Bus Converters, Input 36-75 V, 40 A / 240 W Rev Reference EN/LZT 146 384 R2A Dec 2008 B (c) Ericsson Power Modules AB Product Qualification Specification Characteristics External visual inspection IPC-A-610 Change of temperature (Temperature cycling) IEC 60068-2-14 Na Temperature range Number of cycles Dwell/transfer time -40 to 100C 1000 15 min/0-1 min Cold (in operation) IEC 60068-2-1 Ad Temperature TA Duration -45C 72 h Damp heat IEC 60068-2-67 Cy Temperature Humidity Duration 85C 85 % RH 1000 hours Dry heat IEC 60068-2-2 Bd Temperature Duration 125C 1000 h Electrostatic discharge susceptibility IEC 61340-3-1, JESD 22-A114 IEC 61340-3-2, JESD 22-A115 Human body model (HBM) Machine Model (MM) Class 2, 2000 V Class 3, 200 V Immersion in cleaning solvents IEC 60068-2-45 XA, method 2 Water Glycol ether Isopropyl alcohol 55C 35C 35C Mechanical shock IEC 60068-2-27 Ea Peak acceleration Duration 100 g 6 ms Moisture reflow sensitivity 1 J-STD-020C Level 1 (SnPb-eutectic) Level 3 (Pb Free) 225C 260C MIL-STD-202G, method 108A Duration 1000 h IEC 60068-2-20 Tb, method 1A Solder temperature Duration 270C 10-13 s IEC 60068-2-21 Test Ua1 IEC 60068-2-21 Test Ue1 Through hole mount products Surface mount products All leads All leads Preconditioning Temperature, SnPb Eutectic Temperature, Pb-free 150C dry bake 16 h 215C 235C Preconditioning Temperature, SnPb Eutectic Temperature, Pb-free Steam ageing 235C 245C Frequency Spectral density Duration 10 to 500 Hz 0.07 g2/Hz 10 min in each direction Operational life test Resistance to soldering heat 2 Robustness of terminations IEC 60068-2-58 test Td 1 Solderability IEC 60068-2-20 test Ta 2 Vibration, broad band random IEC 60068-2-64 Fh, method 1 Notes 1 Only for products intended for reflow soldering (surface mount products) 2 Only for products intended for wave soldering (plated through hole products) 20