MEN Power Supplies for 19" Systems

3U 8HP PSU for 19" systems, 9..36V

19" rack mountable

3U, 8HP

Input 24V DC nom. (9-36V)

Output 3.3V and 5V

Power 35W

H15 DIN41612 plug connector (front and rear)

SMBus

External I/Os for key function

-40..+85°C operation temperature

Conformal coating

Complies with EN 50155General

N Two status LEDs on front panel

Electrical Specifications

N Standard Euro rack size 19" Green LED indicates correct input voltage
N Isolation
N Integrated heat industrial sink for extremely low thermal stress to temperature sensitive components Yellow LED indicates correct output voltage Input/output: 1500V eff Driven by transistor Input/shield: 1500V eff
N External switch (key) with binary input Output/shield: 1500V eff
N DC/DC Converter
N Switch-on by key input or wake-on time Ground/shield: 1500V eff Fuse-protected
N Switch-off by key input or software
N MTBF: 240,600 @ 40°C (derived from MIL-HDBK-217F)
N Industrial microcontroller
N Alternative power supply at the backplane for use as redundant PSU Voltage and temperature supervision (readable via SMBus)

Mechanical Specifications

N Overtemperature and overvoltage shutdown
N Dimensions: 3U, 8HP, 128.4mm height Communication with CPU
N Short circuit protection
N Weight: 653g Watchdog functionality Remote on/off

Environmental Specifications

Power Supplies N N N 3 binary inputs
N Reverse polarity protection by intern. protector
N Temperature range (operation): -40..+85°C Voltage level according to external power supply input voltage (max. 36 VDC)
N Fixed switching frequency: 250KHz
N Temperature range (storage): -40..+85°C

Input Characteristics

N Shock: according to EN60068-2-27 Optically isolated
N Nominal voltage input: 24VDC
N Continuous shock: according to EN60068-2-29 User-specific functionality (e.g. external switch on/off signal)
N Input voltage range: 9..36V
N No load input power: 900mW
N Vibration: according to EN600-2-6
N 3 binary outputs

Output Characteristics

N Protection Voltage level according to external power supply input voltage
N Output power (max.): 35W Class of protection: Class II, EN 60950
N Output power (min.): 5W Degree of protection: IP20 (insert in rack), EN60529 Isolated by relays
N 5V tolerance: +5%/-3% User-specific functionality
N 3.3V tolerance: -+3%

EMC

N SMBus signals on back connector
N Overvoltage protection: +0.5V/-0.2V
N Tested according to EN55022 (radio disturbance), EN61000-4-2 (ESD), EN61000-4-4 (burst) and EN61000-4-5 (surge) Voltage level 3.3V
N Overtemperature shutdown: 50°...90° Controlled by CPU

Connection

Communication between the power supply unit and the CPU
N Input and output via DIN 41612 plug connector, type H15

3U 8HP PSU, 18..72V

As above, but with 18V to 72V input range (36V DC nom.)

3U 8HP PSU, 36..154V

As above, but with 36V to 154V input range (110V DC nom.)

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