bd7682fj-凯发线上登陆下载网址
ac/dc用 准谐振控制器型 dc/dc转换器ic本产品是面向工业设备市场的产品，保证可长期稳定供货。是适合这些用途的产品。准谐振控制器型dc/dc转换器bd7682fj-lb为所有存在插口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。通过外接开关mosfet及电流检测电阻，可实现高自由度的电源设计。内置欠压功能，可监控输入电压，有助于实现优良系统。内置脉冲串模式，可降低轻负载时的功耗。bd7682fj-lb内置了软启动功能、脉冲串功能、逐周期过电流限制、过电压保护、过负荷保护、欠压功能等各种保护功能。内置了对sic-mosfet进行优良驱动的栅极箝位电路。
check the evaluation board that designed to fully evaluate bd7682fj-lb. check other evaluation boards that support various power and topologies.
主要规格
特性：
fb olp
auto restart
zt ovp
latch
br uvlo
yes
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]
15
vin1(max.)[v]
27.5
sw frequency (max.)[khz]
120
vcc ovp
latch
br pin
yes
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：
- pin 8 : sop-j8 package (6.00mm × 4.90mm : 1.27mm pitch [typ] )
- quasi-resonant type (low emi)
- frequency reduction mode
- low current consumption (19µa), during standby
- low current consumption when no load (burst operation when light load)
- maximum frequency (120khz)
- cs pin leading-edge blanking
- vcc uvlo (under voltage drop out protection)
- vcc ovp (over voltage protection)
- per-cycle over-current protection circuit
- soft start
- zt trigger mask function
- voltage protection function (brown out)
- zt ovp (over voltage protection)
- gate-clamp circuit
reference design / application evaluation kit
-
- evaluation board - bd7682fj-lb-evk-402
isolation fly-back converter quasi-resonant method output 24 w 24 v
| user guide | block diagram | schematic | part list | layout (pdf) |
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- evaluation board - bd7682fj-evk-301
the aux board is able to operate with both ac and dc input voltages. it is therefore possible to derive the power directly from the grid or from the system dc link
| user guide |
|---|
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- evaluation board - bd7682fj-lb-evk-302
the bd7682fj is an ac/dc quasi-resonant flyback controller ic from rohm semiconductor and offers an auxiliary power supply solution if combined with the 1700 v sic mosfet (sct2h12nz). the bd7682fj and sct2h12nz combined together have been used to develop an isolated 100 w 24 v output auxiliary power solution with a very accurate voltage regulation.
| user guide |
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