BM1Q021AFJ-LB
准谐振DC-DC转换器
BM1Q021AFJ-LB
准谐振DC-DC转换器
本产品是能够保证向工业设备市场长期供应的产品，而且是非常适用于这些应用领域的产品。准谐振控制器型DC-DC转换器IC BM1Q0xxAFJ-LB可为带插座的产品提供理想的系统。采用准谐振工作模式，可实现软开关，有助于降低EMI。由于其开关MOSFET和电流检测电阻是外置的，因此可使电源设计的灵活性更高。本IC内置启动电路，有助于降低待机功耗和提高启动速度。在轻负载时，由于内置Burst功能而且IC的静态电流很低，因此可降低待机功耗。另外，本产品还内置软启动功能、Burst功能、以及逐周期过电流保护、过电压保护、过负载保护、CS开路保护等多种保护功能，因此安全性非常优异。
主要规格
特性：
FB OLP
Auto Restart
ZT OVP
Auto Restart
BR UVLO
No
External LATCH Function
No
AC Monitor Function
No
VH Terminal UVLO
No
Frequency Reduction Function
Yes
Current Detection Resistors
External
Over Current Detection Voltage (typ.)[V]
0.5
Dynamic Over Current Detection
No
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 (t=1.65)
特点：
- Long Time Support Product for Industrial Applications
- Quasi-resonant System
- Built-in 650V Tolerate Starter Circuit
- Burst Operation at Light Load / Frequency Reduction Function
- Maximum Frequency 120kHz
- AC Input Voltage Correction Circuit
- VCC Pin Under Voltage Protection
- VCC Pin Over Voltage Protection
- Over Current Protection Circuit per Cycle
- Output Driver 12 V Clamp Circuit
- Soft Start Function
- ZT Pin Trigger Mask Function
- ZT Pin Over Voltage Protection
- Output Overload Protection (Auto Restart)
- CS Pin Open Protection Circuit (Auto Restart)
