Industrial Grade, DC/DC Input Bus Conditioner, 90 W

General Characteristics

  • Galvanic isolation input/output : No Isolation
  • Nominal power up to : 90 W
  • Protections : Reverse polarity, ASP
  • dedicated to EN50155, EN50121, RIA12
  • RoHs

Key Features

  • Hold-up function
  • Integrated EMI filter per 50121-3-2
  • Reverse polarity protection (REV.POL)
  • Transient 165Vdc (1s)
  • Transient 385Vdc (20ms) per RIA12
  • Ultra wide input range 12-140 Vdc

Series Description
The input bus conditioner FLHGI-90 designates a 90 W input bus front end that enables and eases construction of power architectures for railway applications. The FLHGI-90 includes:
An input EMI filter removing both common and differential input conducted noise to comply EN550155/EN 55022 EMC Standards.
An input spike & surge limiter to comply EN50155/61000 and RIA12 over-voltages.
A reverse polarity protection.
A soft start function.
An hold-up function.
A synchronization output function.
An ASP function that protects application from abnormal surge, bit switching off the down-converter supply.
Leveraging so many functions, the FLGHI-90 advantageously replaces all the input stage components of a power architecture such as filters, voltage limiter, ideal diodes, inrush current limiter and hold up modules. As a single component, the FLHGI-90 allows for a drastic reduction in space, as well as an incredible simplification of the power architecture design. 
Thanks to its wide input range, the input bus conditioner operates with all standard batteries voltages, according to 3 modes of operation: 
- Normal operation: When input bus voltage is within its steady state range, the FLHGI-90 acts like a buffer that transmits the input power to the DC/DC architecture with low losses, and conducted noise filtering. 
- Transient operation: The FLHGI-90 clamps input transient, limiting its output voltage to the maximum voltage value acceptable by downstream DC/DC architecture. In addition, if transient operation enters an abnormal condition of voltage value or duration, an Abnormal Surge Protection function (ASP) shuts down FLHGI-90 output voltage to protect the downstream converter architecture. 
- Hold-Up operation: The hold-up operation occurs when the input bus drops below a low voltage level determined by a simple external resistor. In this case,  the FLHGI-90 connects the down stream converter input bus to the charged hold-up capacitor in order to pursue operation during application input bus drop. 
The module is potted with a bi-component thermal conductive compound and packaged in a metallic case to ensure the module's integrity under severe environmental conditions.
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Product Selection

This product selection table includes all available versions. Other references may be offered – see technical datasheets.
For more information, please consult factory.

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Reference Status Output power Input voltage Max. transient input voltage Switching frequency Output voltage Output current Min. transient input voltage Case dimensions Standard electrical functions Adj. hold-up capa final voltage EMI Filter Hold up mode threshold voltage Operating case temp. range Case material Inrush current limiter Max drop out in nomal mode Charger switching frequency Max power in drop out operation DC resistance UVLO min Synchronization freq. range Voltage drop @ I max Weight Synchronization Transient elevator Power dissipation Options RoHS / SnPb
FLHGI-90-R-R Active 90 W 12 - 140 Vdc 385.0 Vdc / 20 ms 48.5 x 40.7 x 12.7 mm EN 55121, EN-55022 -40 to 105 °C Metallic black anodized coating 300 KHz 1.2 Vdc
1.6 Vdc
85 Grams OUT N

Output Nbr: S: Single output, B: Bi-outputs, D: Dual outputs, T: Triple outputs – Dual outputs products can be usable for single output or bi-outputs. Output Nbr E corresponds to a slave module (see DataSheet)
Case dimensions: L x W x H (maximum values in mm)
Standard electrical functions: Case: Case connection, OVLO: Input overvoltage lockout, UVLO: Input under voltage lockout, OCP: Output over current protection level, OPP: Output over power protection, OVP: Output over voltage protection level, SCP: Output short circuit protection, OTP: Over temperature protection, VIF: Pin for Input Current Ripple Reduction, SYNC: Pin for Synchronisation, TRIM: Pin for adjust ouput voltage, ITRIM: Pin for adjustement ouput current limitation, CC: Pin for capacitor charged signal, CD: Pin for capacitor discharged signal, UVLOadj: Pin for level undervoltage lockout adjust, VREF: Pin for output internal voltage reference, PF: Pin for power fail signal, SENSE: Pin for voltage regulation, REV.POL: Reverse polarity protection, SHARE: Pin for output current parallel sharing
Status NPR: Not preferred for new Design
Options: T Screening at start-up -55° C, Y High isolation 3000 Vdc, M On/Off function, S Screening and serialization, F Synchronization function, P Share function

Technical Documentation
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Materials Disclosure Disclaimer
Even though all possible efforts have been made to provide you with the most accurate information, we can not guarantee to its completeness and accuracy due to the fact that the data has been compiled based on the ranges provided and some information that may not have been provided by the subcontractors and raw material suppliers to protect their business proprietary information.