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NEVO+600 Series
USER MANUAL
______________________________________________________________________________________________________
The NEVO+600 series user manual has been prepared by the Vox Power design team to assist qualified
engineers in correctly implementing the product and to achieve the best reliability and performance possible.
All specifications are believed to be correct at time of publishing. Vox Power Ltd reserves the right to make changes to any of its products and to change or improve any part of the
specification, electrical or mechanical design or manufacturing process without notice. Vox Power Ltd does not assume any liability arising out of the use or application of any of its products
and of any information to the maximum extent permitted by law. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or
by any products of Vox Power Ltd. VOX POWER LTD DISCLAIMS ALL WARRANTIES AND REPRESENTATIONS OF ANY KIND WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
IMPLIED WARRANTIES OF SUITABILITY, FITNESS FOR PURPOSE, MERCHANTABILITY AND NONINFRINGEMENT.
Please consult your local distributor or Vox Power directly to ensure that you have the latest revision before using the product and refer to the latest relevant user manual for further information
relating to the use of the product. Vox Power Ltd products are not intended for use in connection with life support systems, human implantations, nuclear facilities or systems, aircraft,
spacecraft, military or naval missile, ground support or control equipment used for the purpose of guidance navigation or direction of any aircraft, spacecraft or military or naval missile or any
other application where product failure could lead to loss of life or catastrophic property damage. The user will hold Vox Power Ltd harmless from any loss, cost or damage resulting from its
breach of these provisions.

NEVO+600 series overview

The NEVO+600 switch mode power supply series offers truly unrivalled power density, providing 600 W at 25 W/in
ultimate power solution for system designers as they address the pressing demands for more power within less space. Providing multiple isolated
outputs, the series carry full IEC60601 (NEVO+600M/ML only) and IEC60950 & IEC62368 (NEVO+600S/SL) safety approvals.The basic system consists
of an input module together with up to four fully isolated output modules. Single output modules have advanced remote voltage and current
programming functionality as standard. While dual output modules allow for up to eight fully isolated outputs. The input module delivers up to 600
W of output power and has 4 slots, each capable of separately delivering up to 150 W. A 5 V, 1A medically isolated bias supply together with an
AC_OK signal and a global inhibit signal that can disable all outputs simultaneously, comes as standard on all models. Output modules are available
in a range of output voltages and currents to suit all applications. Single output modules with voltage ranges from 1.5V to 60V, currents up to 25A
and paralleling and series capability can result in a voltage range up to 240V and a maximum current of up to 100 Amps from a single NEVO+600
configuration. Dual output modules have a voltage ranges from 1.5V to 15V and currents up to 5A with series capability. By selecting the correct
output modules, a custom power solution can be configured in a few minutes. This instantly available custom solution offers industry leading power
density, total system efficiencies of up to 89% and suits all types of applications including industrial, medical, aerospace, military and telecoms.
Page 1 of 31 Vox Power
Limited | Unit 2, Red Cow Interchange Estate, Ballymount, Dublin 22, D22 Y8H2, Ireland | T +353 1 4591161 |
600 Watts
in the palm of your hand
600W
Powerful
5" x 3" x 1.61"
Small
600g
Light
3
in a 5" x 3"x 1U package. It is the
www.vox-power.com
DOC-MN-005-07, NEVO+600 User Manual

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Summary of Contents for VoxPower NEVO+600 Series

  • Page 1: Nevo+600 Series Overview

    600 Watts in the palm of your hand The NEVO+600 series user manual has been prepared by the Vox Power design team to assist qualified engineers in correctly implementing the product and to achieve the best reliability and performance possible.
  • Page 2: Table Of Contents

    Contents NEVO+600 series overview ..................1 Contents ......................2 Part numbers and ordering information ................3 Installation Notes ....................4 Theory of operation....................5 Input module operation ..................... 6 Signalling ......................9 Single Output module operation ................. 11 Advanced Single Output module features ............... 14 Series Connected outputs ..................
  • Page 3: Part Numbers And Ordering Information

    Part numbers and ordering information INPUT MODULES Model Details NEVO+600S 600 Watt input stage with ITE Approvals (UL/IEC60950 Edition 2 & UL/IEC62368 Edition 2) NEVO+600SL 450 Watt low audible noise input stage with ITE Approvals (UL/IEC60950 Edition 2 & UL/IEC62368 Edition 2) NEVO+600M 600 Watt input stage with Medical Approvals (UL/IEC60601 Edition 3 + UL/IEC60601-1-2 Edition 4 EMC) NEVO+600ML...
  • Page 4: Installation Notes

    Installation Notes This power supply is intended for use within equipment or enclosures which restricts access to authorised personnel only. The instructions in this manual and all warning labels on the product must be followed carefully. SAFETY All power supplies must be installed correctly in a controlled environment which restricts access to any unauthorised personnel. Equipment and system manufacturers must protect service personnel against unintentional contact with the output terminals.
  • Page 5: Theory Of Operation

    Theory of operation The diagram below outlines the topology and major internal components of a fully assembled system. Four output slots are provided and can be populated by output modules input module any combination of . The remaining components in the block diagram are housed in the input module is responsible for receiving the AC mains line voltage and converting it to an appropriate DC voltage whilst providing protection from AC line disturbances and preventing excessive EMI emissions and current harmonics.
  • Page 6: Input Module Operation

    Input module operation Startup & Shut Down The NEVO+ input modules operate from a universal input voltage range and start automatically upon application of adequate AC mains voltage (>84Vrms). After a short delay, the global 5V bias supply starts and the ACOK signal goes high to indicate that the mains voltage is present and input stage is operating correctly. Once the ACOK signal is high, the output modules turn on and deliver power to the application loads.
  • Page 7: Temperature Derating

    Power Derating NEVO+600 units must always be operated within its stated operating limits. Equipment manufacturers and other users must take appropriate deratings into account at all times when specifying a unit for the intended application. If in doubt contact your sales representative or Vox Power for assistance. There are two main deratings for NEVO+600 power supplies, temperature and input line voltage.
  • Page 8 Efficiency The efficiency of the overall unit is dependent on several parameters such as input voltage, load level and on the combination of output modules. The plots below show typical efficiencies of a NEVO+600 over the full load and line voltage range and fitted with four of each type of output module, equally loaded. Typical Load Efficiency (120Vrms) Typical Load Efficiency (220Vrms) 0.90...
  • Page 9: Signalling

    Signalling To reduce cabling in the end system, all major input and output signals and the global 5V bias supply are wired to a single signals circuit that is accessed through the connector (J2) located at the output side of the chassis as shown in the diagram below. Name Description Power Good...
  • Page 10 Power Good signals (PG1-PG4 [Output]) Each output module provides a power good (PG) signal to indicate when the output voltage is above approximately 90% of the preset voltage for that module. Each PG signal on an output module is internally connected through an opto- isolator to the signals circuit, which buffers the signal through a PNP transistor with a 10k pull down resistor, as shown.
  • Page 11: Single Output Module Operation

    Single Output module operation Power profile The power profile diagram below is a voltage/current plot that together with the associated table provides details of the main features of the currently available output modules. OPA2 OPA3 Parameter 3.75 RATED 27.5 16.5 8.25 4.125 27.5...
  • Page 12 Reverse Current Protection (RCP) The standard output modules use synchronous rectification in the output stages to achieve high efficiency and as a result the outputs can both source and sink current. The sink current is internally limited to approximately -6% of the maximum rated current. However, in applications where the output modules are connected to external power sources such as batteries or other power supplies certain precautions must be observed to prevent damage to the unit.
  • Page 13 Ripple and Noise The ripple and noise figures stated in the datasheet are defined based on a standard measuring method. To obtain the same results the same test setup must be used and care must be taken to eliminate any parasitic noise pickup. The diagram below shows details of the setup and also sources of noise pickup. Over Temperature Protection (OTP) Each output module is protected against excessive temperatures.
  • Page 14: Advanced Single Output Module Features

    Advanced Single Output module features Remote voltage programming (External voltage control) The output voltage of the module can be adjusted using an external voltage source connected between the COM and Vcontrol pins on the signals connector J5 as shown below. In this configuration the output voltage will follow the typical equation below, Vo = Vset((1.8-Vctrl) / 0.6), where Vset is the manual preset voltage of the module.
  • Page 15 Remote current programming (External voltage control) The output current limit of the module can be reduced using an external voltage source connected between the COM and Icontrol pins on the signals connector as shown below. In practice this also means that the output can be used as a modulated or constant current source. In the diagram above, Vi_out is an internal voltage source that is proportional to the internal inductor current and approximates the equation,...
  • Page 16 Active protection against worn out power cables or accidental power cable removal is provided and prevents damage to the unit in each case. An internal circuit measures the voltage between S+ to V+ and S- to V-, when this voltage exceeds the thresholds specified in the datasheet, the output voltage is reduced to benign levels.
  • Page 17: Series Connected Outputs

    Series Connected outputs NEVO output modules of the same type can be seriesed in any number to achieve higher output voltages, even across multiple chassis! The following instructions must be followed for output modules configured in this manner. WARNING! Energy and voltage hazards may arise when individual modules are seriesed. See the Safety section for more details.
  • Page 18: Paralleled Outputs

    Paralleled outputs NEVO single type output modules of the same type can be paralleled in any number within the same chassis to achieve higher output currents. When paralleled, the outputs can operate in two distinct modes, Normal parallel mode or Share parallel mode. WARNING! Energy hazards may arise when individual modules are paralleled.
  • Page 19 Share parallel mode In Share parallel mode, the outputs are paralleled as before and the Icontrol pin for each module is connected together as shown in the diagram below. Connecting the Icontrol pins together forces all the outputs to deliver the same current, ensuring that the system reliability is maximised and the work load is distributed evenly across all paralleled modules.
  • Page 20 Parallel remote sensing Remote sensing can be used as normal with paralleled modules. The sense lines (S+ and S-) from each of the output modules should be connected together, S+ to S+, and S- to S- as shown below. This should be done close to the power supply output and a single pair of cables brought from these sense lines to the load. Keeping cable lengths to a minimum and using twisted pairs where necessary will help reduce noise pickup in the sense lines.
  • Page 21 Paralleled remote voltage/current adjust Remote voltage programming with paralleled outputs can be achieved by simply joining all V and COM pins together and applying the external control CONTROL voltage between COM and V CONTROL Remote current programming with paralleled outputs can be achieved by joining all I and COM pins together but directly applying an external control CONTROL voltage would override the current share signal and force the outputs to operate in normal parallel mode.
  • Page 22: Dual Output Module Operation

    Dual Output module operation Power Profile The power profile diagram below is a voltage/current plot that together with the associated table provides details of the main features of the currently available dual output modules. OP5* Parameter Channel Bottom Bottom 3.125 3.125 RATED RATED...
  • Page 23 Start up & Shut down All outputs are designed to have a regulated monotonic start-up with a controlled rise time which is specified in the datasheet. The power good signal stays low until the voltage for both outputs is with the power good threshold range (≈95% ). Dual outputs are designed to start into a pre-biased load without causing any discharge.
  • Page 24: Audible Noise

    Audible noise The following series of plots characterise the audible noise from the NEVO+600 (S & M Model) power supply over various conditions. These plots can be used to estimate the actual audible noise for any application. The SL & ML Models are approximately 18dB lower than the S & M Models. Noise vs Load (25°C) 120Vac 220Vac...
  • Page 25: Mechanical Dimensions And Mounting

    Mechanical dimensions and mounting MECHANICAL DIMENSIONS AND MOUNTING SCREWS SCREWS LOCATION DETAILS PENETRATION TIGHTENING MOUNTING M4 x 4 4mm max, including chassis 0.55 NM OUTPUT MODULES M3 x 5, Countersink Posi, 8 Places Defined by screw 0.5 NM M3 x 30, Countersink Posi, 2 Places CHASSIS LID M3 x 5, Countersink Posi, 5 Places Defined by screw...
  • Page 26: Connectors

    Connectors PINOUTS Circuit Details Live Earth Neutral Circuit Details Power Good Slot A Inhibit Power Good Slot B Inhibit Power Good Slot C Inhibit Power Good Slot D Inhibit Global Inhibit AC OK +5V 1A Bias Supply Circuit Details Positive Output Circuit Details Negative Output...
  • Page 27: Configuring Your Power Supply

    Configuring your power supply The NEVO+600 power supply is designed to be used as part of an end-system in a restricted environment and therefore should only be accessible to qualified and trained personnel. Persons attempting to configure a unit must have the necessary knowledge and training before doing so. Incorrect configuration may cause damage to the power supply and may affect the warranty of the power supply.
  • Page 28 STEP3: Once the lid is removed modules can be removed and replaced as required. For single slot modules, a single 15 pin header on the output module plugs directly into the connector on the input module PCB. For dual slot modules, a dual 15 pin header on the output module plugs directly into two connectors on the input module PCB.
  • Page 29: Safety

    PARALLEL LINK INSTALATION: NEVO single output modules of the same type can be paralleled in any number within the same chassis to achieve higher output currents. For best performance, the output voltages of each paralleled module should be adjusted to the same set point or as close as possible. For more accurate current sharing pin 4 of the J5 connectors of each modules need to be connected together.
  • Page 30 When correctly installed (according to the installation manual) in a limited access environment the NEVO+600S complies with the requirements of IEC/EN/UL/CSA 62368-1, IEC/EN/UL/CSA 60950-1 and the NEVO+600M complies with the requirements of IEC/EN//CSA 60601-1. The power supply should not be operated close to combustible materials or atmosphere. Care should be taken to ensure liquid or metal shavings do not enter the power supply as this can cause a fire hazard.
  • Page 31: Emc Compliance

    EMC compliance To support compliance of the final system design with the EMC directive 2014/30/EU, the NEVO PSU has been designed and tested to the following standards. ELECTROMAGNETIC COMPLIANCE – EMISSIONS Phenomenon Basic EMC Standard Test Details Radiated emissions, electric field EN55011/22, FCC Class B compliant Conducted emissions...

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