BD28C57HFJ-LB
PWM型DC/DC转换器IC
BD28C57HFJ-LB
PWM型DC/DC转换器IC
本产品是工业设备市场的优良产品，是这些应用的更佳产品。AC/DC用PWM型DC/DC转换器为所有需要电源插座的产品提供了更优系统。此IC支持绝缘和非绝缘两种设备，有助于简化各种低功耗电源转换器的设计。VDD UVLO支持Si和SiC的MOSFET，因此阵容更丰富。通过外部连接用于开关的电流检测电阻，可以灵活设计电源。由于采用了电流模式控制，每个周期都限制电流，在带宽和瞬态响应方面表现出更优的性能。开关频率可通过RTCT引脚上的外部电阻和电容器设定。
主要规格
特性：
FET
External
Controller Type
PWM
Vin1(Min.)[V]
6.9
Vin1(Max.)[V]
28
SW frequency(Max.)[kHz]
500
BR PIN
No
Channel
1
Light Load mode
Yes
EN
No
Thermal Shut-down
Yes
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size [mm]
4.9x6.0 (t=1.65)
特点：
- PWM电流模式法
- 低功耗
- VDD引脚UVLO功能
- 每个周期过流保护功能
- 开关频率设置引脚
参考设计 / 应用评估套件
-
- Evaluation Board - BD28C57HFJ-EVK-001
This evaluation board outputs an isolated voltage of 24 V from an input of 300 VDC to 900 VDC, and the maximum output current is 2 A. A SiC MOSFET (SCT12H12NZ) with 1700 V, RdsON = 1.1 Ω typ is used so that an input voltage of up to 900 VDC can be applied. The control IC used is the BD28C57HFJ, which is suitable for driving SiC MOSFET. The control method is current mode. The oscillation frequency is approximately 65 kHz, and the duty max is 50%.
