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Quasi-Resonant Control type DC/DC Converter IC - BM1Q021FJ

The quasi-resonant controller typed AC/DC converter IC BM1Q021FJ provides an optimum system for all products that include an electrical outlet. Quasi-resonant operation enables soft switching and helps to keep EMI low. With MOSFET for switching and current detection resistors as external devices, a higher degree of design freedom is achieved. As BM1Q021FJ built in HV starter circuit, it contributes to low consumption power and high speed start. Because the built-in burst mode is reduced switching loss and IC consumption current is low, Stand-by power is very low. Because BM1Q021FJ built-in soft-start, burst mode, over current limiter which is cycle-by-cycle, over load protection, over voltage protection, CS open protection and so on, BM1Q021FJ are highly safety.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number | BM1Q021FJ-E2
Status | Active
Package | SOP-J8
Unit Quantity | 2500
Minimum Package Quantity | 2500
Packing Type | Taping
RoHS | Yes

Specifications:

FET

-

Controller Type

QR

Vin1(Min.)[V]

8.9

Vin1(Max.)[V]

26.0

Start Circuit [V]

600.0

SW frequency(Max.)[KHz]

120.0

Vcc OVP

Auto Restart

BR PIN

-

Channel

1

Light Load mode

Yes

EN

No

Soft Start

Yes

Thermal Shut-down

Yes

Under Voltage Lock Out

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Features:

  • Quasi-resonant method
  • Built-in 650V tolerate start circuit
  • Low power when load is light ( Burst operation)
  • Maximum frequency control (120kHz)
  • Frequency reduction function
  • AC voltage correction function
  • VCC pin : under voltage protection
  • VCC pin : overvoltage protection
  • Over-current protection (cycle-by-cycle)
  • OUT pin : H voltage 12V clamp
  • Soft start
  • ZT trigger mask function
  • ZT Over voltage protection[Auto-restart]
  • FB Over Load protection [Auto-restart]
  • CS pin open protection [Auto-restart]