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IC-Hersteller ROHM

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ROHM BD7679G

PWM Control Type DC/DC Converter IC for AC/DC Driver

Details

TopologieSonstige Topologie
Eingangsspannung300 V

Beschreibung

BD7679G is a PWM controller type DC/DC converter IC for AC/DC that provides an optimum system for all products that requires an electrical outlet. This product supports both isolated and non-isolated devices. IC enables simple design of low-power electrical converters. With switching MOSFET and current detection resistor as external devices, it enables more freedom in design. Since the peak current control is utilized, peak current is controlled in each cycles, application excels wide bandwidth and transient response. BD7679G includes various protective functions such as soft start function, burst function, per-cycle over current limiter, VCC overvoltage protection and overload protection. An external stop pin (COMP pin) is provided, so that switching stopping can be set by external signals. The function is available as overheating protection and over voltage protection of secondary output, so on. The PWM switching frequency is fixed at 65 kHz. A frequency hopping function is included which contributes to low EMI.

Eigenschaften

  • PWM frequency of 65kHz
  • PWM current mode method
  • Low circuit current when UVLO is ON (12μA at VCC=12V)
  • Low circuit current without load (Burst operation when load is light)
  • Built-in SW frequency hopping function
  • 250ns leading-edge blanking
  • VCC UVLO / OVP (Auto restart)
  • Per-cycle over current protection circuit
  • Soft start
  • Output overload protection(Auto-restart protection)
  • External stop function for COMP pin (Auto restart)

Typische Anwendungen

  • AC adapters and household appliances

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktseriePinsAnwendungPCB/Kabel/PanelModularityTypWire SectionCEndurance
(h)
BetriebstemperaturIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Raster
(mm)
Ø D
(mm)
Technische ArtikelnummerdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
Montageart Muster
691213710002SPEC
6 Dateien WR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular 2 Rising Cage Clamp PCB Ja Horizontal 26 to 16 (AWG) 0.129 to 1.31 (mm²) -40 °C up to +105 °C 5 10 10
744821120SPEC
9 Dateien WE-CMB Stromkompensierte Netzdrossel 4 -40 °C bis zu +125 °C 0.5 20 1000 250 1500 15 7.8 17.5 THT
890334023028SPEC
8 Dateien WCAP-FTXX Folienkondensatoren220 nF -40 °C up to +105 °C 10 MX2P010224K275ASPB16000 300 0.130000 MΩ 310 13 8 14
860020672010SPEC
7 Dateien WCAP-ATG5 Aluminium-Elektrolytkondensatoren10 µF 2000 -40 °C up to +105 °C 48 5 10 2 5 ATDC110100M050DSPA3B000 50 11
Artikel Nr. Daten­blatt Simu­lation
691213710002SPEC
744821120SPEC
890334023028SPEC
860020672010SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktseriePinsAnwendungPCB/Kabel/PanelModularityTypWire SectionCEndurance
(h)
BetriebstemperaturIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Raster
(mm)
Ø D
(mm)
Technische ArtikelnummerdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
Montageart Muster