BD7672BG
PWM控制器型 AC/DC驱动器用 DC/DC转换器IC
BD7672BG
PWM控制器型 AC/DC驱动器用 DC/DC转换器IC
AC/DC用PWM控制器型DC/DC转换器BD7672BG为所有存在插口的产品提供很好的系统。绝缘、非绝缘均可对应,可轻松设计各种形式的低功耗转换器。外接开关用MOSFET及电流检测电阻,可实现自由度高的电源设计。通过峰值电流控制,可进行逐周期电流限制,发挥带宽和瞬态响应的优异性能。BD7672BG内置了软启动功能、脉冲串功能、逐周期过电流限制、VCC过电压保护、过负荷保护等各种保护功能。备有外部锁存端子(COMP端子),可通过外部信号停止锁存(OFF)。此功能可用于过热保护及输出过电压保护等。开关频率固定为65kHz。内置跳频功能,有助于实现低EMI。
主要规格
特性:
FET
External
Controller Type
PWM
Vin1(Min.)[V]
8.5
Vin1(Max.)[V]
25
SW frequency(Max.)[kHz]
65
Vcc OVP
Latch
BR PIN
No
Channel
1
Light Load mode
Yes
EN
No
Soft Start
Yes
Thermal Shut-down
Latch
Under Voltage Lock Out
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
105
Package Size [mm]
2.9x2.8 (t=1.25)
特点:
· PWM frequency of 65kHz· PWM current mode method
· Low circuit current when UVLO is ON (12μA at VCC=12V)
· Low circuit current without load (Burst operation when load is light)
· Built-in SW frequency hopping function
· 250nsec leading-edge blanking
· VCC UVLO / OVP
· Per-cycle over current protection circuit
· Soft start
· Output overload protection (Self-restart protection)
· External latch function for COMP pin (Over heating protection function)
