bd9p205efv-凯发线上登陆下载网址
nano pulse control™, 3.5v～40v输入, 2a 可变电压输出, 车载一次dc/dc转换器bd9p系列是兼顾高速响应和高效率的42v耐压车载一次dc/dc转换器ic。其特点是通过nano pulse control™实现的稳定且较大的降压比、通过扩频功能实现的低emi（低噪声）、在电池刚启动时也能稳定供电的高速响应性能，有助于降低系统功耗和降低bom成本。
包括adas的传感器、摄像头、雷达，以及车载信息娱乐、仪表盘、 bcm（车身控制模块）在内，适用于汽车中要求小型化、高效率化、高可靠性的应用。
8-channel power tree reference design
for automotive adas and info-display
主要规格
功能安全:
特性：
ch
1
integrated fet / controller
integrated fet
topology
buck
synchronous / nonsynchronous
synchronous
vin1(min.)[v]
3.5
vin1(max.)[v]
40
vout1(min.)[v]
0.8
vout1(max.)[v]
8.5
iout1(max.)[a]
2
sw frequency(max.)[mhz]
2.2
light load mode
yes
en
yes
pgood
yes
operating temperature (min.)[°c]
-40
operating temperature (max.)[°c]
125
package size [mm]
6.5x6.4 (t=1)
common standard
aec-q100 (automotive grade)
特点：
- nano pulse control™
- aec-q100 qualified (grade 1)
- minimum on pulse 50 ns (max)
- synchronous buck dc/dc converter integrating power mosfets
- soft start function
- current mode control
- reset function
- quiescent current 10 µa (typ) with 12 v input to 5.0 v output
- light load mode (llm)
- forced pulse wide modulation (pwm) mode
- phase compensation included
- selectable spread spectrum switching
- external synchronization function
- selectable over current protection (ocp)
- input under voltage lockout (uvlo) protection
- thermal shut down (tsd) protection
- output over voltage protection
reference design / application evaluation kit
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- evaluation board - bd9p2x5efv-tsb-001
this evaluation board was developed for rohm’s single 2.2mhz buck dc/dc converter bd9p2x5efv-c. bd9p2x5efv-c series are current mode synchronous buck dc/dc converter integrating power mosfets. the bd9p2x5efv-c series accepts a power supply input range of 3.5v to 40v and generates a maximum output current of 2a.
| user guide |
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- reference design - refrpt001
- cispr25 class5 compliant 8 rails power tree reference design for automotive adas/infotainment application
this reference design is a power tree solution board developed for infotainment devices such as automotive clusters and center information displays and for ecus for adas application. the power system that can support functional safety is integrated on a single board to achieve the optimal configuration as a power tree. excellent emc performance that meets cispr25 class 5 even at all power supply rails are enabled, and reduces heat generation of each device by distributing high-efficiency dcdcs. in addition, two supervisor ics with self-diagnosis functions can monitor the output of all power rails and contribute to a higher level of functional safety.
- automotive infotainment/adas 8-channels power tree reference design
- verified to satisfy emc cispr 25 class 5 standard without common mode filter
- in order to avoid the am radio frequency bands all dc/dc converters operate at a switching frequency of 2.2 mhz or higher.
- thermal characteristics tested
- voltage monitoring for 8-channel power tree to improve the functional safety asil level
- space saving by integrating multiple power trees
