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ON Semiconductor 48V Automotive Applications

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48V automotive applications

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Market segment introduction and ON Semiconductor marketing position

Currently one of the most significant developments in car design is the shift to hybrid and fully electric vehicles. This consequently requires a fundamental change in the architecture of vehicles’ electrical systems: the introduction of 48V DC systems alongside the traditional 12V DC systems.

One of the key reasons for this shift is that 48V allows higher currents and greater power delivery. And this is urgently needed as modern cars consume much more electrical energy through energy-intensive climate-control, powerful driver-assistance computers, complex infotainment systems etc.

But even more importantly adding 48V systems brings greater fuel economy and reduced emissions at relatively low cost by enabling hybridization. By driving auxiliary functions such as power steering racks, brake vacuum pumps and water pumps with electric motors rather than using a power transmission from the engine, 48V systems help to run internal combustion engines more efficiently.

The introduction of 48V will come gradually, with the 48V infrastructure to run alongside the traditional 12V system. Shifting to 48V demands the development of a wide range of new componentry that can operate at this higher voltage and meet the ambitious new standards of the automotive industry. 

Actually there is a fast development in power electronics ongoing to serve the opportunities created by the shift to 48V systems.

ON Semiconductor offers a wide range of 48V Mosfet solutions with a variety of break down voltages, technology, and package suitable for high-frequency switching or motor drive applications.

ON Semiconductor are a top 10 global semiconductor supplier to the automotive industry, with more than two decades of success delivering innovative, automotive grade semiconductor solutions. With an industry leading portfolio of more than 10,000 automotive grade (AEC) products, ON Semiconductor remains committed to rigorous quality standards that address the demands of the automotive industry.

Image of 48V grafik

A Belt-Driven Starter Generator (BSG), is an electric motor with 48V operating voltage, however in addition it also acts as a generator. The BSG is coupled directly to the to the internal combustion engines crankshaft by means of a belt drive. When required power from the on-board 48V lithium-ion battery drives the BSG and the torque generated is added directly to the vehicles crankshaft boosting the engines torque. Conversely when the driver steps on the brake, the kinetic energy is recovered being converted into an electrical current and fed back into the 48V battery. This allows for up to 40% of the braking energy to be recovered and stored in the battery.


Discrete Devices - 80V


Part number
 

Package 

  RDS(on-max) (mΩ)
  FDBL86361-F085


  TOLL
 


  1.4
 
  FDBL86363-F085

 
  TOLL
 

 
  2
 

 
  NVMFS6H800N
 

  SO8FL   2.1

  
  NVMFS6H818N
 

  SO8FL   3.7

 
  FDD86367-F085
 

  DPAK   4.2

  
  NVMFS6H836N
 

  SO8FL   7

  
  FDD86369-F085
 

  DPAK   7.9

 
  NVTFS6H850N
 

  u8FL   9.5

 


Gate Drivers 


Part number
 


Voltage (max)
 


Current (Sink/Src)
 

 
  NCV5183  
 

 
  625

  4.5/4.5
  
  FAN7191
 
  325   4.5/4.5
  
  NCV51511
 
  100   6A/3A


Current Sense Amplifiers 


Part number
 

Gain Error

VCMR

 
  NCV21xR
 

 
  1%
 

 
  -0.3V to 26V
 

Modules

To enable higher level of integration and push at the limit the level of power density, ON Semiconductor is developing a full family of transfer molded modules specifically designed for BSG/ISG applications. Based on the APM17M module package, the integration of the best in class 80V/100V MOSFET technologies combined with the high thermal performances of the package, this family of modules addresses the most stringent requirements of thermal and power efficiency, low EMI, reliability and lowest cost of ownership. The module approach based on APM17M will reduce dramatically the design phase, improve overall system performances, simplify the assembly in production and ultimately reduce the time to market. For additional information, please contact EBV.

Image of APM16M

The higher voltage in a 48V system brings a number of benefits when compared to a 12V system. In addition to enabling more powerful ancillary devices e.g. infotainment, heaters, pumps etc. Since the current draw is only 25 percent of that of a 12V system, engineers can reduce the cross sectional area of the wiring in the system and therefore reduce the weight and cost of the wiring harness.


Discrete Devices - 80V


Part number
 

Package

  RDS(on-max) (mΩ)
  FDBL86361-F085  

  TOLL

 
  1.4

 
  FDBL86363-F085

 
  TOLL

  2

 
  NVMFS6H800N

  SO8FL   2.1
  
  NVMFS6H801N
 
  SO8FL   2.8
 
  NVMFS6H818N
 
  SO8FL   3.7

 
  FDD86367-F085

  DPAK   4.2
 
  NVMFS6H836N
 
  SO8FL   7
  
  FDD86369-F085
 
  DPAK   7.9
  
  NVTFS6H850N
 
  u8FL   9.5


Three-Phase Modules 


Gate Drivers 


Part number
 


Voltage (max)
 


Current (Sink/Src)
 

 
  NCV5183
 

  625

  4.5/4.5
  
  FAN7191
 
  325   4.5/4.5
  
  NCV51511
 
  100   6A/3A


Current Sense Amplifiers 


Part number
 

Gain Error

VCMR

 
  NCV21xR
 

 
  1%
 

 
  -0.3V to 26V
 

 


Part number
 


Package
 


Voltage
 


Current
 


Features
 

  
  FTCO3V85A1
 
  APM19   80V   180A   2.5mΩ, Rth typ. 0.92(K°/W)/0.7(K°/W)
 
  NXV08V110DB1

 
  APM19   80V   190A   2.1mΩ, Rth typ. 1(K°/W)
 
  NXV08V080DB1
 
  APM19   80V   80A125A

 
  3.0mΩ@25C°, 0.1(K°/W), 2 phase shunts

 

EEPROM


Part number
 


Protocol
 


Automotive Grade
 


Densities
 


  CAV25xxx
 
  SPI  

  Grade 1 (-40 to +125°C)

  

  1 Kb – 1 Mb

 
  CAV24Cxx
 
  I2C   Grade 1 (-40 to +125°C)   

  2 Kb – 1 Mb

  
  NV25xxx
 
  SPI   

  Grade 0 (-40 to +150°C)
  Grade 1 Low Vcc (1.7 V)

  

  1 Kb – 64 Kb

  
  NV24Cxx
 
  I2C   

  Grade 1 Low Vcc (1.7 V)

  

  2 Kb – 64 Kb

 

 

mage of 48V AUXILIARIES Block Diagram 

Modules

To address the most demanding requests of power density and integration, ON Semiconductor is offering the APM19 module platform, a flexible and performing transfer molded package technology. In a package of 40x25mm, ON semiconductor can integrate the leading LV/MV MOSFET technology in different topologies and configurations to address the main applications in the 48V domain. With an electrically Isolated DBC substrate for low thermal resistance and the possibility to integrate RC Snubber devices for Low EMI, current and temperature sensing features, APM19 platform is the perfect solution AQG-324 certified for high demanding 48V applications. For additional information, please contact EBV.

 

Image of APM19 MODCD product

In hybrid and fully electric vehicles where you have both 12V and 48V DC systems the job of the HV/ LV DC/DC converter is to ensure efficient bi-directional flow of energy between these two voltage systems.


Discrete Devices - 80V


Part number
 

Package 

Voltage

RDS-ON(MAX)

 
  FDBL86363-F085
 
TOLL   80V   2mΩ

 
  NVMFS6H800N

  SO8FL   
  80V
 
  2.1mΩ
 
  NVMFS6H818N
 
  SO8FL   80V   3.7mΩ

  
  FDD86367-F085

  DPAK   80V   4.2mΩ

  
  NVTFS6H850N

  u8FL   80V   9.5mΩ
  
  FDBL9401-F085
 
  TOLL   40V   0.65mΩ
  
  NVMFS5C404N
 
  SO8FL   40V   0.7mΩ
  
  FDB9403-F085
 
  D2PAK   40V   1.2mΩ


Modules 


Gate Drivers 


Part number
 


Voltage (max)
 


Current (Sink/Src)
 

 
  NCV5183
 

 
  625

  4.5/4.5
  
  FAN7191
 
  325   4.5/4.5
  
  NCV51511
 
  100   6A/3A


Current Sense Amplifiers 


Part number
 

Gain Error

VCMR

 
  NCV21xR
 

 
  1%
 

 
  -0.3V to 26V
 

 

Part number

Package


Voltage
 


Current
 


Features
 


  FTCO3V85A1
 
  APM19   80V   180A   3-phase interleaved DC/DC

 

Image of 48V to 12V DC - DC Block Diagram

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