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Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC for AC/DC Converter - BM1050AF

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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number | BM1050AF-GE2
Status | Active
Package | SOP24
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes

Specifications:

FET

-

Controller Type

PFC + QR

Vin1(Min.)[V]

8.5

Vin1(Max.)[V]

24.0

Start Circuit [V]

650.0

SW frequency(Max.)[KHz]

120.0

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

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)