SSQE48S07120

SSQE48S07120 BEL | Alldatasheet

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© 2015 Bel Power Solutions, inc. North America +1-866.513.2839 Asia-Pacific +86.755.29885888 Europe, Middle East +353 61 225 977 tech.support@psbel.com belpowersolutions.com BCD.00342_AB  RoHS lead-free solder and lead-solder-exempted products are available  Industry-standard DOSA pinout  Output: 12 V at 7A  On-board input differential LC-filter  Start-up into pre-biased load  No minimum load required  Weight: 0.44 oz. [12.3 g]  Fixed-frequency operation  Hiccup overcurrent protection  Fully protected (OTP, OCP, OVP, UVLO)  Remote sense  Remote ON/OFF positive or negative logic option  Industry standard 1/16th brick foo tprint: 0.9” by 1.3”  High reliability: MTBF = 10 million hours, calculated per Telcordia TR-332, Method I Case 1  UL/CSA60950-1 recognized in US and Canada and TUV certified per IEC/EN60950-1  Designed to meet Class B conducted emissions per FCC and EN55022 when used with external filter  All materials meet UL94, V-0 flammability rating The new SSQE48S07120 DC-DC converter is an open frame sixteenth-brick DC-DC converter that conforms to the Distributed Open Standards Architecture (DOSA) specifications. The converter operates over an input voltage range of 36 to 75VDC, and provides a tightly regulated output voltage with an output current up to 7A. The output is fully isolated from the input and the converter meets Basic Insulation requirements permitting a positive or negative output configuration. The converter is constructed using a single-board approach with both planar and discrete magnetics. The standard feature set includes remote On/Off (positive or negative logic), input undervoltage lockout, output overvoltage, overcurrent, and short circuit protections, and overtemperature shutdown with hysteresis. With standard pinout and excellent thermal performance, the SSQE48S07120 converters can replace in most cases existing eighth-brick converters. Inclusion of this converter in a new design can result in significant board space and cost savings.  Telecommunications  Data communications  Wireless communications  Servers, Workstations  High efficiency – no heat sink required  Cost effective, single board design  Small size and low-profile.

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB Conditions: TA = 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin = 33 µ F, unless otherwise specified. PARAMETER NOTES MIN TYP MAX UNITS Absolute Maximum Ratings Input Voltage Continuous 0 80 VDC Operating Ambient Temperature -40 85 °C Storage Temperature -55 125 °C Isolation Characteristics I/O Isolation (Standard Version – N) 2250 VDC Isolation Capacitance (Standard Version - N) 150 pF I/O Isolation (Option – K) 1500 VDC Isolation Capacitance (Option - K) 1150 pF Isolation Resistance 10 MΩ Feature Characteristics Switching Frequency 430 kHz Output Voltage Trim Range1 Industry-standard equations (12V) -20 +10 % Remote Sense Compensation1 Percent of VOUT(NOM) +10 % Output Over-voltage Protection Non-latching 117 123 130 % Over-temperature Shutdown (PCB) Non-latching 125 °C Peak Backdrive Output Current during startup into prebiased output Sinking current from external voltage source equal VOUT(NOM) – 0.6V and connected to the output via 1Ω resistor.COUT=220µ F, Aluminum 10 50 mADC Backdrive Output Current in OFF state Converter is OFF; External voltage=5 VDC 10 mADC Auto-Restart Period Applies to all protection features 200 ms Turn-On Time See Figures B, C, and D 3 ms ON/OFF Control (Positive Logic) Converter Off (logic low) -20 0.8 VDC Converter On (logic high) 2.4 20 VDC ON/OFF Control (Negative Logic) Converter Off (logic high) 2.4 20 VDC Converter On (logic low) -20 0.8 VDC Mechanical Weight 12.3 g Reliability MTBF Telcordia SR-332, Method I Case 1 50% electrical stress, 40°C ambient 10 MHrs PARAMETER NOTES MIN TYP MAX UNITS Input Characteristics Operating Input Voltage Range 36 48 75 VDC Input Under-voltage Lockout Turn-on Threshold 33 34 35 VDC Turn-off Threshold 31 32 33 VDC Input Voltage Transient 100ms 100 VDC

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB Maximum Input Current VIN = 36VDC , IOUT = 7ADC 2.6 ADC Input Stand-by Current Vin = 48V, converter disabled 10 12 mA Input No Load Current (0 load on the output) Vin = 48V, converter enabled 45 60 mA Input Reflected-Ripple Current, is Vin = 48V, 25MHz bandwidth 20 mAPK-PK Input Voltage Ripple Rejection 120Hz 50 dB Output Characteristics External Load Capacitance Plus full resistive load 3,300 µF Output Current Range 12VDC 0 7 ADC Current Limit Inception Non-latching, for 12VDC 7.35 8.25 9.0 ADC Peak Short-Circuit Current (< 200 us) Non-latching, Short = 10mΩ 25 A RMS Short-Circuit Current Non-latching 2.5 3.0 Arms Output Voltage Set-point (no load) Sense pins connected to output pins 11.82 12.00 12.18 V Output Regulation Over Line ±2 ±5 mV Over Load ±2 ±5 mV Overall Output Voltage Regulation Over line, load and temperature2 11.64 12.36 V Output Ripple and Noise – 25 MHz bandwidth Full load + 10µ F tantalum + 1µ F ceramic 100 150 mVPK-PK Dynamic Response Load Change 50%-75%-50% of Iout Max, di/dt = 0.1 A/μs Co = 1µ F ceramic + 10µ F tantalum Figure 8 100 150 mV Settling Time to 1% of Vout 50 µs Load Change 50%-75%-50% of Iout Max , di/dt = 1 A/μs Co = 100µ F tantalum + 1µ F ceramic Figure 9 100 150 mV Settling Time to 1% of Vout 50 75 µs Efficiency 100% Load VOUT = 12 VDC 92 % 50% Load VOUT = 12 VDC 93 % 1Vout can be increased up to 10% via the sense leads or 10% via the trim function. However, the total output voltage trim from all sources shall not exceed 10% of VOUT(NOM) in order to ensure specified operation of overvoltage protection circuitry. Trim up by 10% at full load is guaranteed for Vin > 38V.

2 Operating ambient temperature range is -40 ºC to 85 ºC

These power converters have been designed to be stable with no external capacitors when used in low inductance input and output circuits. However, in some applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. A 33µ F electrolytic capacitor with an ESR < 1Ω across the input is recommended to ensure stability of the converter over the wide range of input source impedance. In many applications, the user has to use decoupling capacitance at the load. The power converter will exhibit stable operation with external load capacitance up to 3,300µF . The ON/OFF pin is used to turn the power converter on or off remotely via a system signal. There are two remote control options available, positive and negative logic, both referenced to Vin( -). A typical connection is shown in Fig. A.

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB Fig. A: Typ. Circuit configuration for ON/OFF function The positive logic version turns on when the ON/OFF pin is at a logic high and turns off when the pin is at a logic low. The converter is on when the ON/OFF pin is left open. See the Electrical Specifications for logic high/low definitions. The negative logic version turns on when the pin is at a logic low and turns off when the pin is at a logic high. The ON/OFF pin can be hard wired directly to Vin(-) to enable automatic power up of the converter without the need of an external control signal. The ON/OFF pin is internally pulled up to 5V through a resistor. A properly de-bounced mechanical switch, open- collector transistor, or FET can be used to drive the input of the ON/OFF pin. The device must be capable of sinking up to 0.2mA at a low level voltage of 0.8V. An external voltage source (± 20 V maximum) may be connected directly to the ON/OFF input, in which case it must be capable of sourcing or sinking up to 1mA depending on the signal polarity. See the Startup Information section for system timing waveforms associated with use of the ON/OFF pin. Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage. The input voltage must be typically 35V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops typically below 33V. This feature is beneficial in preventing deep discharging of batteries used in telecom applications. The converter is protected against overcurrent or short circuit conditions. Upon sensing an overcurrent condition, the converter will shut down in approximately 15ms after entering the constant current mode of operation, regardless of the value of the output voltage. Once the converter has shut down, it will attempt to restart nominally every 200ms with a very low duty cycle. The attempted restart will continue indefinitely until the overload or short circuit conditions are removed. Once the output current is brought back into its specified range, the converter automatically exits the hiccup mode and continues normal operation. The converter will shut down if the output voltage across Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of the OVP circuitry. The OVP circuitry contains its own reference, independent of the output voltage regulation loop. Once the converter has shut down, it will attempt to restart every 200ms until the OVP condition is removed. The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. Converter will automatically restart after it has cooled to a safe operating temperature.

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB The converters meet North American and International safety regulatory requirements per UL/CSA60950-1, EN60950-1, and IEC60950-1. Basic Insulation is provided between input and output. The converters have no internal fuse. If required, the external fuse needs to be provided to protect the converter from catastrophic failure. Refer to the “Input Fuse Selection for DC/DC converters” application note on www.belpowersolutions.com for proper selection of the input fuse. Both input traces and the chassis ground trace (if applicable) must be capable of conducting a current of 1.5 times the value of the fuse without opening. The fuse must not be placed in the grounded input line. Abnormal and component failure tests were conducted with the input protected by a 15A fuse. If a fuse rated greater than a 15A is used, additional testing may be required. To protect a group of converters with a single fuse, the rating can be increased from the recommended value above. EMC requirements must be met at the end-product system level, as no specific standards dedicated to EMC characteristics of board mounted component DC-DC converters exist. However, Bel Power Solutions tests its converters to several system level standards, primary of which is the more stringent EN55022, Information technology equipment - Radio disturbance characteristics-Limits and methods of measurement. An effective internal LC differential filter significantly reduces input reflected ripple current, and improves EMC. With the addition of a simple external filter, all versions of the SSQE48S07120 converters pass the requirements of Class B conducted emissions per EN55022 and FCC requirements. Please contact Bel Power Solutions Applications Engineering for details of this testing. Fig. B: Startup Scenario #1 Scenario #1: Initial Startup From Bulk Supply ON/OFF function enabled, converter started via application of V IN. See Figure B. Time Comments t0 ON/OFF pin is ON; system front-end power is toggled on, VIN to converter begins to rise. t1 VIN crosses undervoltage Lockout protection circuit threshold; converter enabled. t2 Converter begins to respond to turn -on command (converter turn-on delay). t3 Converter V OUT reaches 100% of nominal value. For this example, the total converter startup time (t3- t1) is typically 3 ms. VIN ON/OFF STATE VOUT t t0 t1 t2 t3 ON OFF

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB Fig. C: Startup scenario #2 Fig. D: Startup scenario #3. The converters have been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, startup and shutdown parameters, output ripple and noise, transient response to load step-change, overload, and short circuit. All data presented were taken with the converter soldered to a test board, specifically a 0.060” thick printed wiring board (PWB) with four layers. The top and bottom layers were not metallized. The two inner layers, comprised of two- ounce copper, were used to provide traces for connectivity to the converter. Scenario #2: Initial Startup Using ON/OFF Pin With VIN previously powered, converter started via ON/OFF pin. See Figure C. Time Comments t0 VINPUT at nominal value. t1 Arbitrary time when ON/OFF pin is enabled (converter enabled). t2 End of converter turn-on delay. t3 Converter V OUT reaches 100% of nominal value. For this example, the total converter startup time (t3- t1) is typically 3 ms. Scenario #3: Turn-off and Restart Using ON/OFF Pin With VIN previously powered, converter is disabled and then enabled via ON/OFF pin. See Figure D. Time Comments t0 VIN and VOUT are at nominal values; ON/OFF pin ON. t1 ON/OFF pin arbitrarily disabled; converter output falls to zero; turn-on inhibit delay period (200 ms typical) is initiated, and ON/OFF pin action is internally inhibited. t2 ON/OFF pin is externally re-enabled. If (t2- t1) ≤ 200 ms, external action of ON/OFF pin is locked out by startup inhibit timer. If (t2- t1) > 200 ms, ON/OFF pin action is internally enabled. t3 Turn-on inhibit delay period ends. If ON/OFF pin is ON, converter begins turn-on; if off, converter awaits ON/OFF pin ON signal; see Figure F. t4 End of converter turn-on delay. t5 Converter VOUT reaches 100% of nominal value. For the condition, (t2- t1) ≤ 200 ms, the total converter startup time (t5- t2) is typically 203 ms. For (t2- t1) > 200 ms, startup will be typically 3 ms after release of ON/OFF pin. ON/OFF STATE VOUT t0 t1 t2 t3 ON OFF VIN t

© 2015 Bel Power Solutions, inc. 866.513.2839 tech.support@psbel.com belpowersolutions.com BCD.00342_AB *Clearance from module to host board ≥ 0.020” HTMAX=0.400” PRODUCT SERIES INPUT VOLTAGE MOUNTING SCHEME RATED LOAD CURRENT OUTPUT VOLTAGE ON/OFF LOGIC MAXIMUM HEIGHT [HT] PIN LENGTH [PL] SPECIAL FEATURES RoHS SSQE 48 S 07 120 - N S 0 N G Sixteenth Brick Format 36-75 V S  Surface Mount 07 

7 ADC

120  12 V N  Negative P  Positive S  SMT @ 0.400” MAX 0  n/a N  Standard K  1150pF common mode cap, 1500VDC, and special OCP feature No Suffix  RoHS lead-solder- exemption compliant G  RoHS compliant for all six substances The example above describes P/N SSQE48S07120-NS0NG: 36-75V input, surface mount, 7A@ 12V output, negative enable (ON/OFF logic), maximum height of 0.400”, standard feature set, and RoHS compliant for all 6 substances. Consult factory for availability of other options. NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. PAD/PIN CONNECTIONS PAD/PIN # FUNCTION

1 Vin (+)

2 ON/OFF

3 Vin (-)

4 Vout (-)

5 Vout (+)

 All dimensions are in inches [mm]  Pin material: Brass Alloy  Pin Finish: Gold over Nickel  Converter Weight: 0.44 oz. [12.3 g] (est.)  Suggested land pad: 0.110” dia.