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reference designNCV3843BVD1R2G | Demoboard 6.6KW OBC / Inrush Current Limit Board

Onsemi NCV3843BVD1R2G | Demoboard 6.6KW OBC / Inrush Current Limit Board

High Performance Current Mode Controllers

Overview

TopologyLLC Resonant Converter
Input voltage90-264 V
Output 1450 V / 16 A
IC revision0.9

Description

The NCV3843BV is a high performance fixed frequency current mode controller. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering. These devices are available in a surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage. The NCV3843BV is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).

Features

  • Trimmed Oscillator for Precise Frequency Control
  • Oscillator Frequency Guaranteed at 250 kHz
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Compensation
  • Latching PWM for Cycle−By−Cycle Current Limiting
  • Internally Trimmed Reference with Undervoltage Lockout
  • High Current Totem Pole Output
  • Undervoltage Lockout with Hysteresis
  • Low Startup and Operating Current
  • These are Pb−Free Devices

Typical applications

  • Power Supplies

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Operating Temperature
Q
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
Pins
Type
Mount
IR(A)
Working Voltage(V (AC))
SamplesAvailability & Sample
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885012007057
SPECWCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5%
Simu­lation
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance100 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length2 mm
Width1.25 mm
Height0.6 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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885012207092
SPECWCAP-CSGP MLCCs 50 V(DC), 10 nF, ±10%
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance10 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height0.8 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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885012207078
SPECWCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10%
Simu­lation
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance1 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0805 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor5 %
Insulation Resistance0.5 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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885012208069
SPECWCAP-CSGP MLCCs 25 V(DC), 10 µF, ±10%
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance10 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size1206 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor10 %
Insulation Resistance0.01 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Height1.6 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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61301011021
SPECWR-PHD Pin Header - Single, –, –

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.

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Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length25.4 mm
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PackagingBag 
Pins10 
TypeAngled 
MountTHT 
Rated Current3 A
Working Voltage250 V (AC)
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750343786
SPECFlyback Transformer, –, –
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer
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750344031
SPECFlyback Transformer, –, –
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer
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