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Men Mikro

Men Mikro 0712-0003

3U 8HP PSU For 19" Systems, 36V DC Input

-40 To +85°C Screened, Conformal Coating, Complies With EN 50155
 
Men Mikro 0712-0003 3U 8HP PSU for 19 systems, 36V DC input
  
  • 19" rack mountable
  • 3U, 8 HP
  • Input 36 V DC nom. (18 to 72 V)
  • Output 3.3 V and 5 V
  • Power 35 W
  • H15 DIN41612 plug connector (front and rear)
  • SMBus
  • External I/Os for key function
  • -40 to +85°C screened
  • Conformal coating
  • Complies with EN 50155



Datasheet/Manual:

MEN 0712-0003 datasheet in PDF format Datasheet in PDF format
Manual available on request Manual available on request

 

Introduction

The 3U 8HP power supply unit is a plug-in device for 19" systems (e.g. VMEbus, CompactPCI®) and is especially designed for computer systems in public transport vehicles, being fully compliant with EN 50155.

The PSU comes with a nominal input voltage of 36VDC (18 to 72 Volts). Together with two other versions a wide input range between 9 V and 154 V can be covered. It is is controlled by a microprocessor which supervises the voltage and the temperature, as well as three external inputs and three outputs.

Thanks to the on-board intelligence the PSU can also act as an SMBus slave and communicate with the CPU board via the backplane. This allows the PSU to power on the system at a programmed date or it allows the CPU to make status polls with regard to error messages, time-out, on/off, for example. The PSU provides a DC/DC converter to generate the isolated 5 V from the input voltage. A regulator generates 3.3 V from the 5 V isolated side. The maximum power at full load is 35 W, minimum power is 5 W.

The subassembly is conformally coated, and components are secured against vibration. The PSU operates in -40 to +85°C environmental temperature. The thermal stress is extremely low due to integrated heat sinks and diversion of dissipated heat over the mounting surface.
 
 

Specification
Microcontroller:

Output voltage and temperature supervision (readable via SMBus)
Overtemperature and overvoltage shutdown
Communication with CPU
Watchdog functionality
SMBus:

Signals on back connector
Voltage level 3.3V
Controlled by CPU
Communication between the power supply unit and the CPU
Binary I/O:

3 binary inputs
o Voltage level according to external power supply input voltage (max. 36 VDC)
o Electrically isolated
o External switch (key) with binary input
o Switch-on by key input or wake-on time
o Switch-off by key input or software
o Status of binary inputs readable via SMBus
o User-specific functionality (depending on firmware)
3 binary outputs
o Voltage level according to external power supply input voltage
o Isolated by relays
o User-specific functionality (controllable via SMBus)
o Maximum switching power: 60W (example 110V/0.5V)
Miscellaneous:

DC/DC Converter
o Fuse-protected
Two status LEDs on front panel
o Green LED indicates correct input voltage
o Yellow LED indicates correct output voltage
o Driven by transistor
Alternative power supply at the backplane for use as redundant PSU
Short circuit protection
Reverse polarity protection by internal protector
Fixed switching frequency: 250KHz
Input Characteristics:

Nominal voltage input: 36VDC
Input voltage range: 18..72V (for one second according to EN50155)
Wide input range: 0.5 x nominal voltage < nominal voltage < 1.25 x nominal voltage
No load input power: 900mW
Output Characteristics:

Output power (max.): 35W
Output power (min.): 5W
5V tolerance: +5%/-3%
3.3V tolerance: -+3%
Overvoltage protection: +0.5V/-0.2V
Overtemperature shutdown: 50°...90° (adjustable by SMBus command)
Connection:

Input and output via DIN 41612 plug connector, type H15
Electrical:

Isolation (according to EN50155)
o Input/output: 1500VDC/1000V eff
o Input/shield: 1500VDC/1000V eff
o Output/shield: 1500VDC/1000V eff
o Ground/shield: 1500VDC/1000V eff
MTBF: 240,600 @ 40°C (derived from MIL-HDBK-217F)
Mechanical:

Dimensions: 3U, 8HP, 128.4mm height
Integrated heat sink
Weight: 665g
Environmental:

Temperature range (operation): -40..+85°C
Temperature range (storage): -40..+85°C
Airflow: min. 10m³/h
Shock: according to EN60068-2-27
Continuous shock: according to EN60068-2-29
Vibration: according to EN60068-2-6
Protection
o Class of protection: Class II, EN 60950
o Degree of protection: IP20 (insert in rack), EN60529
EMC:

Tested according to EN55022 (radio disturbance), EN61000-4-2 (ESD), EN61000-4-4 (burst) and EN61000-4-5 (surge)
Software Support:

Driver software for Windows®, Linux, VxWorks®
ROHS Status:

This product is lead free/ROHS compliant

Ordering Details:
Board:

0712-0003
PSU 3U, 8HP, input 36VDC nominal (18-72V), output 5V,3.3V/35W, H15 front/back SMbus, external I/Os for key function, -40..+85°C screened, conformal coating

Please refer to datasheet for further information.
Accessories:

N/A
Further Information:

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