PET800-12-074NA

PET800-12-074 BEL | Alldatasheet

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Technical content

The PET800-12-074 is an 800 Watts, 1 U form factor power supply module with Active PFC (Power Factor Correction) and PMBus ® (Power Management Bus). It converts standard AC mains power into a main output of 12 V for powering intermediate bus architectures (IBA) in high performance and reliability servers, routers, and network switches. The PET800 -12-074 meets international safety standards and displays the CE-Mark for the European Low Voltage Directive (LVD).

• Best-in-Class, 80 PLUS Certified “Platinum” Efficiency
• Wide Input Voltage Range 90-264 VAC
• AC Input with Power Factor Correction
• Always-On 24 W Standby Output (12 V/2 A)
• Hot-Plug Capable
• Parallel Operation with Active Digital Current Sharing
• DC-DC Digital Controls for Improved Performance
• High Density Design 25 W/in3
• Small Form Factor 73.5 x 39.0 x 185 mm
• PMBus® for Control, Programming and Monitoring
• Over Temperature, Output Over Voltage and Over Current Protection
• One DC OK Signaling Status LED
• High Performance Servers
• Routers
• Network Switches Disclaimer: PMBus is a registered trademark of SMIF, Inc.

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network switch, and router applications. interleaved Critical mode to guarantee best efficiency and unity power factor over a wide operating range. on the output ensures no reverse load current and renders the supply ideally suited for operation in redundant power systems. active OR-ing device for maximum reliability. I2C bus. It allows full monitoring of the supply, including input and output voltage, current, power, and inside temperatures. power demand and supply temperature and can be overridden through the I2C bus. Figure 1. PET800-12-074 Block Diagram

General Condition: TA = 0… 50 °C unless otherwise noted. VAC and with external fan power according to 80Plus efficiency measurement specifications. Figure 2. Efficiency vs. Load Current (Ratio Metric Loading)

1 The charging currents for X capacitors are not considered as in-rush current

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Figure 3. Power factor vs. Load current General Condition: Ta = 0 … +50 °C unless otherwise noted.

12.0 VDC

10 uF tantalum capacitor in parallel with a 0.1 uF ceramic capacitor. The output ripple voltage on VSB is influenced by the main output V1. Evaluating VSB output ripple must be done when maximum load is applied to V1.

3 The output power derating at low line only for PET800-12-050NA, for RA model no derating required

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00505_AE The output ground of the pins of the power su pply provides the output power return path. The ground output at the PCB card edge shall be connected to the safety ground (power supply enclosure). This grounding should be well designed to ensure passing the max allowed Common Mode Noise levels. The power supply shall be provided with a reliable protective earth ground. All secondary circuits shall be connected to protective earth ground. Resistance of the ground returns to chassis shall not exceed 1.0 mΩ. This path may be used to carry DC-current. Hot Swapping a power supply is the process of inserting and extracting a power supply from an operating power system. During this process the output voltages shall remain within the lim its with the capacitive load specified. The hot swap test must be conducted when the system is operating under static, dynamic and zero loading conditions. The power supply can be hot swapped by the following method: Extraction: The power supply may be rem oved from the system while operating with PSON asserted, while in standby mode with PSON de-asserted or with no AC applied. No connector damage should occur during un-mating of the power supply from the power distribution board (PDB). Insertion: The power supply may be inserted into the system with PSON asserted, with PSON de-asserted or with no AC power present for that supply. No connector damage should occur due to the mating of the output and input connector. In general, a failed (of by internal latch o r external control) supply may be removed, then replaced with a good power supply, however, hot swap needs to work with operational as well as failed power supplies. The newly inserted power supply will get turned on into standby or Power On mode once inserted. PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT F Input Fuse (Line) Not user accessible, quick-acting (F) 12.5 Arms V1 OV OV Threshold V1 Refer to section 5.1 13.3 14.5 VDC V1 UV UV Threshold V1 unlatch unit by disconnecting AC or by toggling the PS_ON signal 10.5 VDC IV1 lim Current Limit V1 Refer to section 5.3 71.5 97.5 ADC IV1 SC Max Short Circuit Current V1 V1 < 3 V (unlatch unit by disconnecting AC or by toggling the PS_ON signal) 250 ADC VSB OV OV Threshold VSB unlatch unit by disconnecting AC 13.3 14.5 VDC ISB lim Current Limit VSB Hiccup mode 3.5 4.5 ADC TSD Over Temperature on Inlet Automatic recovery with Hysteresis_for NA model 70 °C Over Temperature Oring Automatic recovery with Hysteresis_for NA model 100 °C TSD Over Temperature on Inlet Automatic recovery with Hysteresis_ for RA model 60 °C Over Temperature Oring Automatic recovery with Hysteresis_ for RA model 105 °C The PET front-ends provide a fixed threshold over voltage protection implemented with a HW comparator. Once an over voltage condition has been triggered, the power supply will shut down and latch the fault condition. The latch can be unlatched by disconnecting the supply from the AC mains or by toggling the PS_ON input.

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when VSB voltage higher than 10 V. current limitation and its voltage drops below ~10.8 VDC for more than 10 ms, the output will latch off (standby remains on). Figure 4. Current Limitation on V1 (Vi = 230 VAC) Figure 5. Current limitation on VSB

The timing of signals and outputs are specified in the Table below and illustrated in Figure 6. Table 1. Turn on/off timing Figure 6. Output Voltage timing Tvout_rise: The 12 Vsb and 12 V output rise time shall be 1 ms to 25 ms.

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Figure 7. Turn On/Off Timing specified regulation in less than 10 ms. Any output shall not undershoot at turn on or off cycle under any circumstances. C for any given line and load conditions.

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00505_AE PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT PS ON# Signal Characteristics Signal type (Active Low) Accepts an open collector/drain input from the system. Pul-up to Vsb located in the power supply. PSON = Low ON PSON= Open or High OFF PSON = Low OFF Logic level low Power supply ON 0 1.0 V Logic level high Power supply OFF 2.0 5.25 V Source current Vpson = low 4 mA Power up delay T pson on delay 5 400 ms PWOK delay T pson pwok 50 ms PWOK Signal Characteristics Signal type Open collector/drain output from power supply. Pull-up to Vsb located in power supply. PWOK = High Power Good PWOK = Low Power Not Good Logic level low voltage Isink = 4 mA 0 0.4 V Logical level high voltage Isource = 200 uA 2.4 5.25 V Sink current PWOK = low 4 mA Source current, PWOK = high 2 mA PWOK delay Tpwok on 100 500 ms PWOK rise and fall time 100 µs Power down delay Tpwok off 1 200 ms SMB Alert Signal Characteristics Signal Type Open collector/drain output from power supply. Pull-up to Vsb located in power supply. Alert = High Power OK Alert = Low Power Alert to system Logic level low voltage Isink = 4 mA 0 0.4 V Logic level high voltage Isink = 50 µA 2.4 3.46 V Sink current Alert = low - 4 mA Sink current Alert = high 50 µA NOTE: Signals that can be defined as low true use the following convention: Signal = low true 8.1 8.2 All signal pins have protection diodes implemented to protect internal circuits. When the power supply is not powered, the protection devices start clamping at signal pin voltages exceeding ±0.5 V. Therefore, all input signals should be driven only by an open collector/drain to prevent back feeding inputs when the power supply is switched off. If interconnecting of signal pins of several power supplies is required, then this should be done by decoupling with small signal schottky diodes as shown in examples in Figure 7 (except for SMB_ALERT, PW_OK pins). This will ensure the pin voltage is not affected by an unpowered power supply.

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tech.support@psbel.com POWER SUPPLY CONDITION LED No AC power to all PSU OFF AC present/only standby output on 1 Hz Flashing Green Power supply DC output ON and OK Green Power supply failure Yellow Power supply warning 0.5 Hz Flashing Yellow*/Green* NOTE: * Flashing frequency: 1 Hz (0.5 sec Yellow/ 0.5 sec Green) 8.3 Status information is indicated by front-panel LED, LED is bi-colored: green and yellow. See Table for different LED status. 8.4 The PS_ON signal is required to remotely turn on/off the main output of the power supply. PS_ON is and active low signal that turns on the main output power rail. When this signal is not pulled low by the system or left open, the outputs (except the Standby output) turn off. PS_ON is pulled to a standby voltage by a pull-up resistor internal to the power supply. 8.5 PWOK is a power good signal and shall be pulled HIGH by the power supply to indicate that all outputs are within regulation limits. When any output voltage falls below regulation limits, an internal failure or when AC power has been removed for a time sufficiently long, so that power supply operation is no longer guaranteed, PWOK will be de-asserted to a LOW state. The start of the PWOK delay time shall inhibited as long as any power supply output is in current limit. 8.6 The SMB_ALERT is an output signal and it is pulled to 3.3 V by a 4.7 K resistor in power supply. This signal indicates that the power supply is experiencing a problem that the user should investigate. This shall be asserted due to Critical events or Warning events. The signal shall activate in the case of critical component temperature reached a warning threshold, general failure, over-current, over-voltage, under-voltage, failed fan. This signal may also indicate the power supply is reaching its end of life or is operating in an environment exceeding the specified limits. SMB Alert shall also be utilized for warning of critical thermal component temperatures. The Thermal CLST shall assert when the component temperature, which shall be reported by a dedicated thermal probe, is reaching below specified _T to critical shut down. The power supply shall report the temperature in addition to Thermal CLST through. 8.7 To receive ALERT signal from system or PSU backplane, If signal is pulled LOW, the PSU internal fan shall be forced to run at maximum speed to improve thermal performance. 8.8 To receive a FAULT signal from system or PSU backplane. PSU shall shutdown if this pin is pulled HIGH. 8.9 All outputs shall be capable of operating in a redundant current share mode. Eight power supplies may be operated in parallel. All outputs shall incorporate an isolation diode for fault isolation. Filter capacitors that are located after the isolation diode shall be of high reliability and shall be de-rated sufficiently to minimize failures. The +12 V current sharing

voltage to go out of steady state regulation. For 65 A the ISHARE voltage shall be 6 V for a single power supply. drop is 200 mV on the positive rail and 200 mV on the output return rail.

• There are 10K internal pull-up resistors
• The SDA/SCL IOs are 3.3/5 V tolerant
• Full SMBus clock speed of 100 kbps
• Clock stretching limited to 1 ms
• SCL low time-out of >25 ms with recovery within 10 ms

Figure 8. Physical layer of communication interface investigate. This is a logical OR of the Shutdown and Warning events.

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Figure 9. I2C / SMBus Timing appropriate command to the DSP. By default the write protection is on. The EEPROM provides 2K bytes of user memory. None of the bytes are used for the operation of the power supply. Figure 10. I2C Bus to DSP and EEPROM

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00505_AE 8.14 The EEPROM behaviour the same as the 24C02 series 8 bit address protocol. Even though page write / read commands are defined, it is recommended to use the single byte write / read commands. WRITE The write command follows the SMBus 1.1 Write Byte protocol. After the device address with the write bit cleared a first byte with the data address to write to is sent followed by the data byte and the STOP condition. A new START condition on the bus should only occur after 5ms of the last STOP condition to allow the EEPROM to write the data into its memory. READ The read command follows the SMBus 1.1 Read Byte protocol. After the device address with the write bit cleared the data address byte is sent followed by a repeated start, the device address and the read bit set. The EEPROM will respond with the data byte at the specified location. 8.15 The Power Management Bus (PMBus®) is an open standard protocol that defines means of communicating with power conversion and other devices. For more information, please see the System Management Interface Forum web site at: www.powerSIG.org. PMBus® command codes are not register addresses. They describe a specific command to be executed. The PET800- 12-074 supply supports the following basic command structures:

• Clock stretching limited to 1 ms
• SCL low time-out of > 25 ms with recovery within 10 ms
• Recognized any time Start/Stop bus conditions WRITE The write protocol is the SMBus 1.1 Write Byte/Word protocol. Note that the write protocol may end after the command byte or after the first data byte (Byte command) or then after sending 2 data bytes (Word command). In addition, Block write commands are supported with a total maximum length of 255 bytes. See PET800-12-074 Programming Manual for further information. S Address W A Command A Data Low Byte1) A Data High Byte1) A P 1) Optional S Address W A Command A Byte 1 A Byte N A P Byte Count A

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Programming Manual for further information. www.belpowersolutions.com and supports both the PSMI and PMBus™ protocols. navigation tree. In the monitoring view the power supply can be controlled and monitored. Figure 11. Monitoring dialog of the I2C Utility

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tech.support@psbel.com PARAMETER DESCRIPTION / CONDITION CRITERION Electromagnetic Interference FCC / ICES-003 Emission (USA/Canada) Verification, CRISP 22 – Emission (International) , EN55022 – Emission (Europe), EN55024 – Immunity (Europe) Class B Harmonics IEC61000-3-2 A Flicker IEC61000-3-3 ESD Susceptibility EN61000-4-2 Electrostatic Discharge: ± 8 KV contact discharge, ±15 KV Air discharge. B Radiated Susceptibility EN61000-4-3 Radiated RFI Immunity: 10 V/m A EFT/Burst EN61000-4-4 Electrical Fast Transients: Level 3 B Surge Voltage EN61000-4-5 Electrical Surge: CM; 2 KV, DM: 1 KV B Conducted Susceptibility EN61000-4-6 RF Conducted: 10 V RMS A Power Frequency Magnetic Field Immunity EN61000-4-8, 30 A/m A Voltage Dips and Interruptions EN61000-4-11 30%(Voltage Dips), 10 ms B 60%(Voltage Dips), 100 ms C >95%(Voltage Dips), 500 ms C Leakage Current EN60950-1, 3.5 mA@264 VAC/60 Hz Maximum electric strength testing is performed in the factory according to IEC/EN 60950, and UL 60950. Input-to-output electric strength tests should not be repeated in the field. Bel Power Solutions will not honor any warranty claims resulting from electric strength field tests. PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT Agency Approvals Approved to the latest revision/amendment of the following standards:

• IEC60950-1
• EN60950-1
• UL/CSA0950-1
• GB4943.1, GB9254; GB17625.1
• CNS14336-1, CNS13438 Approved by independent body (see CE Declaration) CMTBF The power supply shall have a minimum MTBF at continuous operation of 200,000 hours calculated at 100%, according to BELL CORE TR-322 at 25 °C excluding the Fan MTBF, and at least 100,000 hours including the fan MTBF. Isolation Input to case (PE) Basic Input (L/N) to output Reinforced dC Creepage / Clearance Primary to protective earth (PE) 3.0 minimum mm Primary to secondary 6.0 minimum Electrical Strength Test

2121 VDC

4242 VDC

+86 755 298 85888 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 © 2018 Bel Power Solutions & Protection BCD.00505_AE PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT Temperature Operating ambient temperature, normal mode (inlet air): Ta min to Ta max 0 +50 °C Operating, TOP, standby mode -5 +50 °C Non-operating Ambient_ for NA model -40 70 °C Non-operating Ambient_ for RA model -40 60 °C Humidity Operating (Non-condensing) 10 85 % Non-operating (Non-condensing) 5 95 % Altitude Operating, above Sea Level 0 5000 m Non-operating, above Sea Level 0 15000 m Mechanical Shock A) Operation: 10 G, no malfunction B) Non-Operation: 50 G Trapezoidal Wave, Velocity change = 4.3 m/sec. Three drops in each of six directions are applied to each of the samples. Vibration A) Operation: 0.01 g2/Hz at 10Hz, 0.02 g2/Hz at 20 Hz. B) Non-Operation: - Sine sweep: 5 Hz to 500 Hz @ 0.5 gRMS at 0.5 octave/min dwell 15min at each of 3 resonant points; - Random profile: 5 Hz @ 0.01 g2/Hz to 20 Hz @ 0.02g2 (slope up): 20 Hz to 500Hz @ 0.02 g2/Hz (flat); Input acceleration = 3.13 gRMS; 10 min. per axis for 3 axis on all samples Acoustic Noise 1 meter, 25 °C, 50% load 46 dBA PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT Dimensions Width 73.5 mm Height 39 Depth 185 Weight 798 g

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Figure 14. Mechanical Drawing-Side/Top View NOTE: A 3D step file of the power supply casing is available on request. Figure 15. Front View Figure 16. Rear View Figure 17. Mating Connector

The AC input receptacle shall be a 3 pins IEC320 C14 inlet. This inlet shall be rated for operation at 15A/250 VAC. For the pin assignment of DC connector, please refer to Figure 18 and Table 4. Figure 18. Pin Assignment of DC Connector A25 PWOK Power Good Output. Signal is pulled HIGH to indicate all outputs ok. internal fan shall be forced to run at maximum speed to improve thermal performance.

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tech.support@psbel.com ITEM DESCRIPTION ORDERING PART NUMBER SOURCE BPS I2C Utility Windows XP/Vista/7 compatible GUI to program, control and monitor PET Front-Ends (and other I2C units) Download belfuse.com/power-solutions Dual Connector Board Connector board to operate 2 PET units in parallel. Includes an on- board USB to I2C converter (use I2C Utility as desktop software). VRA.00334.0 Bel Power Solutions 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. USB to I2C Loading Board