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reference designNCV78935 | Demoboard NCV78935R1DAGEVB

Onsemi NCV78935 | Demoboard NCV78935R1DAGEVB

NCV78935 Daughter Board Bottom Side Cooling

Overview

TopologyBuck Converter
Input voltage4.5-66 V
Switching frequency180-2000 kHz
Output 166 V / 1.6 A
IC revision1.0

Description

The NCV78935R1DAGEVB is a form factor Reference Design of High Efficiency Three Channel 1.6 A Synchronous Buck LED Driver with Integrated High and Bottom Side Switches and Current Sensing for Automotive Front Lighting. The reference design can be interfaced via I/O pins and the SPI bus to an external microcontroller. It can be combined with Multiphase Boost Controller daughter boards and create evaluation kit which provides a complete solution turning SPI commands into LED string control.Combined with NCV78964R1DAGEVB Daughter Board, it provides 5 Buck channels on LEDGEN4PEVK Gen 4+ LED Driver Evaluation Kit.

Features

  • Single Chip Synchronous Tripple Buck Solution
  • Stand-Alone/Limp Home Mode
  • 3 independent LED Strings up-to 60 V
  • High Current Capability 1.6 A per Output
  • Switched Mode Synchronous Bucks with Average CurrentRegulation through the LEDs, Programmable Buck Frequency
  • Independent Supply Voltage for Each Buck Channel
  • Integrated Hi-accuracy Current Sensing
  • Minimum of External Components
  • Low EMC Emission
  • High Operating Frequencies to Reduce Inductor Size - up to 2 MHz
  • 4 MHz SPI Interface for Dynamic Control of System Parameters
  • 48 V Battery System Compliant
  • ASIL B Compliant; AEC-Q100 Qualified and PPAP Capable
  • These Devices are Pb-Free, Halide Free/BFR Free and are RoHSCompliant

Typical applications

  • High current LEDs and provides a complete solution to drive three LED strings of up-to 60 V
  • Automotive front lighting applications like high beam, low beam, DRL (daytime running light), turn indicator, fog light, static cornering

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT(A)
RDC max.(mΩ)
fres(MHz)
Mount
C
Tol. C
VR(V (DC))
Size
Operating Temperature
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
Pins
Type
Working Voltage(V (AC))
SamplesAvailability & Sample
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784771101
SPECWE-PDA SMT Shielded Power Inductor, 100 µH, 1.5 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PDA SMT Shielded Power Inductor
Inductance100 µH
Rated Current1.5 A
Saturation Current1.7 A
DC Resistance174 mΩ
Self Resonant Frequency6.5 MHz
MountSMT 
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Size1260 
Operating Temperature -50 °C up to +150 °C
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Length12 mm
Width12 mm
Height6 mm
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Pins2 
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–Check availability
885012206050
SPECWCAP-CSGP MLCCs 16 V(DC), –, –
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
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Capacitance470 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance1.1 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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885012206095
SPECWCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
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Capacitance100 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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61301221121
SPECWR-PHD Pin Header - Dual, –, 3 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
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Rated Current3 A
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MountTHT 
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length15.24 mm
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PackagingBag 
Pins12 
TypeStraight 
Working Voltage250 V (AC)
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61301621121
SPECWR-PHD Pin Header - Dual, –, 3 A
Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
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Rated Current3 A
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MountTHT 
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length20.32 mm
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PackagingBag 
Pins16 
TypeStraight 
Working Voltage250 V (AC)
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885012207128
SPECWCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
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Capacitance100 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance1 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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–Check availability
885012209071
SPECWCAP-CSGP MLCCs 100 V(DC), –, –
Simu­lation
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
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Capacitance2.2 µF
Capacitance±10% 
Rated Voltage100 V (DC)
Size1210 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor5 %
Insulation Resistance0.05 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width2.5 mm
Height2.5 mm
Pad Dimension0.75 mm
Packaging7" Tape & Reel 
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