IC manufacturers Onsemi

IC manufacturers (103)

Onsemi FAN7688SJX | Demoboard 6.6KW On Board EV Charger

Advanced Secondary Side LLC Resonant Converter Controller with Synchronous Rectifier Control

Overview

TopologyLLC Resonant Converter
Input voltage90-264 V
Switching frequency36-735 kHz
Output 1450 V / 16 A
IC revision0.9

Description

The FAN7688 is an advanced Pulse Frequency Modulated (PFM) controller for LLC resonant converters with Synchronous Rectification (SR) that offers best in class efficiency for isolated DC/DC converters. It employs a current mode control technique based on a charge control, where the triangular waveform from the oscillator is combined with the integrated switch current information to determine the switching frequency. This provides a better control-to-output transfer function of the power stage simplifying the feedback loop design while allowing true input power limit capability. Closed-loop soft-start prevents saturation of the error amplifier and allows monotonic rising of the output voltage regardless of load condition. A dual edge tracking adaptive dead time control minimizes the body diode conduction time thus maximizing efficiency.

Features

  • Secondary Side PFM Controller for LLC Resonant Converter with Synchronous Rectifier Control
  • Charge Current Control for Better Transient Response and Easy Feedback Loop Design
  • Adaptive Synchronous Rectification Control with Dual Edge Tracking
  • Closed Loop Soft-Start for Monotonic Rising Output
  • Wide Operating Frequency (39 kHz ~ 690 kHz)
  • Green Functions to Improve Light-Load Efficiency - Symmetric PWM Control at Light-Load to Limit the Switching Frequency while Reducing Switching Losses - Disabling SR at Light-Load Condition
  • Protection Functions with Auto-Restart - Over-Current Protection (OCP) - Output Short Protection (OSP) - NON Zero-Voltage Switching Prevention (NZS) by Compensation Cutback (Frequency Shift) - Power Limit by Compensation Cutback (Frequency Shift) - Overload Protection (OLP) with Programmable Shutdown Delay Time - Over-Temperature Protection (OTP)
  • Programmable Dead Times for Primary Side Switches and Secondary Side Synchronous Rectifiers
  • VDD Under-Voltage Lockout (UVLO)
  • Wide Operating Temperature Range -40°C to +125°C

Typical applications

  • Game Console / LED TV / PDP TV / LCD TV
  • Desktop PC / Fully Configured Entry Level PC Server

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
Fl
(mm)
L
(µH)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
fres
(MHz)
VOP
(V)
MountPins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
Packaging Samples
885012007051SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)10 pF ±5% 50 0805 -55 °C up to +125 °C 60010 GΩ NP0 Class I 2 1.25 0.5 0.6 7" Tape & Reel
885012007057SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)100 pF ±5% 50 0805 -55 °C up to +125 °C 100010 GΩ NP0 Class I 2 1.25 0.5 0.6 7" Tape & Reel
885012007059SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)220 pF ±5% 50 0805 -55 °C up to +125 °C 100010 GΩ NP0 Class I 2 1.25 0.5 0.6 7" Tape & Reel
885012007061SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)470 pF ±5% 50 0805 -55 °C up to +125 °C 100010 GΩ NP0 Class I 2 1.25 0.5 0.8 7" Tape & Reel
885012207086SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)1 nF ±10% 50 0805 -55 °C up to +125 °C 2.510 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207088SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)2.2 nF ±10% 50 0805 -55 °C up to +125 °C 2.510 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207090SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)4.7 nF ±10% 50 0805 -55 °C up to +125 °C 2.510 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207092SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)10 nF ±10% 50 0805 -55 °C up to +125 °C 2.510 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207096SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)47 nF ±10% 50 0805 -55 °C up to +125 °C 2.510 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207072SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)100 nF ±10% 25 0805 -55 °C up to +125 °C 3.55 GΩ X7R Class II 2 1.25 0.5 0.8 7" Tape & Reel
885012207074SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)220 nF ±10% 25 0805 -55 °C up to +125 °C 3.52.3 GΩ X7R Class II 2 1.25 0.5 1.25 7" Tape & Reel
885012207076SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)470 nF ±10% 25 0805 -55 °C up to +125 °C 3.51.1 GΩ X7R Class II 2 1.25 0.5 1.25 7" Tape & Reel
885012207052SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 16 V(DC)2.2 µF ±10% 16 0805 -55 °C up to +125 °C 100.05 GΩ X7R Class II 2 1.25 0.5 1.25 7" Tape & Reel
885012207079SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)2.2 µF ±10% 25 0805 -55 °C up to +125 °C 100.05 GΩ X7R Class II 2 1.25 0.5 1.25 7" Tape & Reel
885012208094SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 50 V(DC)4.7 µF ±10% 50 1206 -55 °C up to +125 °C 100.02 GΩ X7R Class II 3.2 1.6 0.5 1.6 7" Tape & Reel
885012208069SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 25 V(DC)10 µF ±10% 25 1206 -55 °C up to +125 °C 100.01 GΩ X7R Class II 3.2 1.6 0.5 1.6 7" Tape & Reel
74438343010SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-MAPI SMT Power Inductor 2010 -40 °C up to +125 °C 2 1.6 1 2.8 4.7 86 99 80 SMT 2 1 1.8
61300511021SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Angled Pin Header -40 °C up to +105 °C1000 MΩ 12.7 THT 5 Single Pin Header Angled 3 Bag
61301011021SPEC

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.

7 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Angled Pin Header -40 °C up to +105 °C1000 MΩ 25.4 THT 10 Single Pin Header Angled 3 Bag
61300611021SPEC

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.

7 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Angled Pin Header -40 °C up to +105 °C1000 MΩ 15.24 THT 6 Single Pin Header Angled 3 Bag
61300811021SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Angled Pin Header -40 °C up to +105 °C1000 MΩ 20.32 THT 8 Single Pin Header Angled 3 Bag
Order Code Data­sheet Simu­lation
885012007051SPEC
885012007057SPEC
885012007059SPEC
885012007061SPEC
885012207086SPEC
885012207088SPEC
885012207090SPEC
885012207092SPEC
885012207096SPEC
885012207072SPEC
885012207074SPEC
885012207076SPEC
885012207052SPEC
885012207079SPEC
885012208094SPEC
885012208069SPEC
74438343010SPEC
61300511021SPEC
61301011021SPEC

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.

61300611021SPEC

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.

61300811021SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureQ
(%)
DF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
Fl
(mm)
L
(µH)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
fres
(MHz)
VOP
(V)
MountPins
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
Packaging Samples