IC-Hersteller Onsemi

IC-Hersteller (95)

Onsemi FAN7631

Advanced PFM Controller for Half-Bridge Resonant Converter

Details

TopologieLeistungsfaktor-Korrektur
Eingangsspannung90-265 V
Schaltfrequenz10-600 kHz
Ausgang 1400 V / 1 A
IC-Revision1.0.2

Beschreibung

The FAN7631 is a pulse-frequency modulation controller for high-efficiency half-bridge resonant converters that includes a high-side gate drive circuit, an accurate current-controlled oscillator, and various protection functions. The FAN7631 features include variable dead time, high operating frequency up to 600kHz, protections such as LUVLO, and a selectable latch or A/R protection using the LS pin for user convenience.

The Zero-Voltage-Switching (ZVS) technique reduces the switching losses and improves the efficiency significantly. ZVS also reduces the switching noise noticeably, which allows a small Electromagnetic Interference (EMI) filter.

Offering everything necessary to build a reliable and robust resonant converter, the FAN7631 simplifies designs and improves productivity and performance. The FAN7631 can be applied to resonant converter topologies such as series resonant, parallel resonant, and LLC resonant converters.

Eigenschaften

  • Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topologies
  • High Efficiency with Zero-Voltage-Switching (ZVS)
  • Up to 600kHz Operating Frequency
  • Built-in High-Side Gate Driver
  • High Gate-Driving Current: +500mA/-1000mA
  • Programmable Dead Time with a Resistor
  • Pulse Skipping and Burst Operation for Frequency Limit (Programmable) at Light-Load Condition
  • Simple Remote On/Off Control with Latch or Auto-Restart (A/R) Using FI or LS Pin
  • Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD), and High Precise Line Under Voltage Lockout (LUVLO)
  • Level-Change OCP Function During Startup

Typische Anwendungen

  • PDP and LCD TVs
  • Adapters
  • Desktop PCs and Servers
  • Video Game Consoles
  • Teelecom Power Supplies

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
Q
(%)
IR 1
(mA)
RDC max.
(Ω)
IR
(mA)
Muster
7447905SPEC
6 Dateien WE-MI SMT-Multilayer-Induktivitäten 1 45 50 0.4 50
7447076SPEC
6 Dateien WE-FI Funkentstördrossel 150 0.045 6100
744825510
8 Dateien
750341924SPEC
Power Transformer
750341925SPEC
Power Transforme
750341926SPEC
Power Inductor
750341927SPEC
Power Transformer
Artikel Nr. Daten­blatt Simu­lation
7447905SPEC
7447076SPEC
744825510
750341924SPEC
750341925SPEC
750341926SPEC
750341927SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
Q
(%)
IR 1
(mA)
RDC max.
(Ω)
IR
(mA)
Muster