BD28C57HFJ-LB
PWM型DC/DC轉換器IC
BD28C57HFJ-LB
PWM型DC/DC轉換器IC
此產品是工具機市場的排名產品。此為適用於這些應用領域的最佳產品。AC/DC的PWM型DC/DC轉換器為所有需要電源插座的產品提供了最佳系統。該IC同時支持隔離和非隔離設備，並能簡化各種低功耗電氣轉換器的設計。此IC擁有VDD UVLO產品陣容，同時支持MOSFET的Si和SiC。透過外部連接開關的電流檢測電阻，電源可靈活設計。由於採用電流模式控制，電流在每個週期中受到限制，並在頻寬和暫態響應方面展現出優異的性能。開關頻率可透過RTCT引腳上的外部電阻和電容設置。
Product Detail
規格:
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)
功能:
- PWM電流模式
- 低功耗
- VDD腳位UVLO功能
- 逐週期過電流保護功能
- 開關頻率設定腳位
參考設計 / 應用評估套件
-
- 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%.
