BM1Q021FJ
Quasi-Resonant Control type DC/DC Converter IC
BM1Q021FJ
Quasi-Resonant Control type DC/DC Converter IC
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.
You can choose from a variety of power and topology evaluation boards.
For Automotive usage, please contact Sales.
Product Detail
Specifications:
FET
External
Controller Type
QR
Vin1(Min.)[V]
8.9
Vin1(Max.)[V]
26
Start Circuit
Integrated
SW frequency(Max.)[kHz]
120
Vcc OVP
Auto Restart
BR PIN
No
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
Package Size [mm]
4.9x6.0 (t=1.65)
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]
Reference Design / Application Evaluation Kit
-
- Evaluation Board - BM3G007MUV-EVK-001
This evaluation board outputs an isolated voltage of 12 V from an input of 90 Vac to 264 Vac, and the maximum output current is 8.3 A. It was developed mainly as a power supply for adapters. The average efficiency is 90.7% when VIN = 230V. The BM3G007MUV is GaN HEMT (650 V 70 mΩ), with integrated driver and protection circuitry. QR controllers for AC/DC power supplies use BM1Q021FJ.
