Quasi-Resonant Control type DC/DC Converter IC_BM1Q021FJ
准谐振控制器型DC/DC转换器IC BM1Q021FJ为所有存在插口的产品提供优良的系统。为准谐振动作，实现了软开关，有助于实现低EMI。外接开关MOSFET及电流检测电阻，可实现自由度高的电源设计。本IC内置启动电路，有助于实现低待机功耗和高速启动。轻负载时内置脉冲串功能且IC消耗电流低，因此待机功耗会变小。本IC内置软启动功能、脉冲串功能、逐周期过电流限制、过电压保护、过负荷保护、CS开路时保护等各种保护功能，安全性优异。
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特性：
FET
-
Controller Type
QR
Vin1(Min.)[V]
8.9
Vin1(Max.)[V]
26.0
Start Circuit [V]
650.0
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
特点：
- 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]