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:
AC Monitor Function
No
BR UVLO
No
Current Detection Resistors
External
Dynamic Over Current Detection
No
External LATCH Function
No
FB OLP
Auto Restart
Frequency Reduction Function
Yes
VH Terminal UVLO
No
ZT OVP
Auto Restart
FET
External
Controller Type
QR
Vin1(Min.)[V]
8.9
Vin1(Max.)[V]
26
Withstand Voltage [V]
650
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.
