bm1q104fj-凯发k8一触即发
quasi-resonant control dc/dc converter ic准谐振控制器型dc/dc转换器icbm1q104fj为所有带插座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。此外，为了防止变压器的声响，实施了将常规负载时的低频声抑制到一定水平的控制，且内置瞬时短脉冲群蚊音（6khz～20khz）抑制功能。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。
本产品不建议使用于车载设备。
主要规格
特性：
fb olp
auto restart
zt ovp
latch
br uvlo
no
external latch function
no
ac monitor function
no
vh terminal uvlo
no
frequency reduction function
yes
current detection resistors
external
dynamic over current detection
no
fet
external
controller type
qr
vin1(min.)[v]
14
vin1(max.)[v]
30
withstand voltage [v]
650
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]
85
package size [mm]
4.9x6 (t=1.65)
特点：
- key specifications
- · operating power supply voltage range:
vcc:14.0v to 30.0v - · vh: to 600v
operating current: normal: 0.60ma (typ)
burst: 0.37ma(typ) - · operate temperature range: -40 to 85deg
- quasi-resonant method
- built-in 650v tolerate start circuit
- low consumption power in light load
- bottom skip control
- sound of transformer reduction function
- harsh sound prevention of transformer function
- vcc pin: under voltage protection
- over-current protection (cycle-by-cycle)
- out pin: h voltage 12.5v clamp
- soft start
- zt trigger mask function
- zt over voltage protection
- fb over load protection [auto-restart]
- cs pin open protection [auto-restart]
reference design / application evaluation kit
-
- evaluation board - bm1q104fj-evk-001
quasi-resonant method isolated 90w 20v 4.5a
| user guide | schematic | part list | layout (pdf) |
|---|---|---|---|
