BM1050AF
Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC for AC/DC Converter
BM1050AF
Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC for AC/DC Converter
BM1050AF is compounded LSI of Power Factor Correction converter (PFC) for harmonic solution and DC/DC converter (DC/DC). Because DC/DC operates on Quasi-resonant method, DC/DC contributes to Low EMI. BM1050AF built in a HV starter circuit that tolerates 650V. Because of putting the current sense resistors externally both the PFC part and the DC/DC part, IC enables power supply design free.
In the PFC part, IC adopts peak current control operation. Suitable application is proposed by a various protection circuit, such as the multiplier with a revision circuit on the AC voltage falls, the load regulation revision circuit, and the maximum power feed-forward circuit, etc. Moreover, the frequency hopping function is built in and it contributes to low EMI.
You can choose from a variety of power and topology evaluation boards.
For Automotive usage, please contact Sales.
Product Detail
Specifications:
FET
-
Controller Type
PFC + QR
Vin1(Min.)[V]
8.5
Vin1(Max.)[V]
24
Start Circuit [V]
650
SW frequency(Max.)[kHz]
120
Vcc OVP
Auto Restart / Latch
BR PIN
Yes
Channel
1
Light Load mode
Yes
EN
No
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
15x7.8 (t=2.01)
Features:
· Quasi-resonant circuit + PFC circuit· Built-in HV Starter circuit
· Low consumption current (typ.10uA) when starter circuit is OFF.
· Quasi resonant circuit
· Power Factor Correction circuit
· Selectable protection method by LATCH/AUTOR
· External stop function (COMP pin)
· AC input voltage stop detected function (ACDET)
· Built-in PFC stop terminal (PFCON/OFF)
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