你好
我参考TIDA 01627做了一版TPS65987D+BQ25713+MCU的Typec电路,关于TIDA 01627有没有什么其他一些资料?
目前tps65987D通过IIC2和上位机相连,用了一个USB to iic的工具连接上位机,上位机没识别到tps65987d,是什么原因,vin3v3有。usb to iic的工具有要求吗
tps65987d的资料太少,哪里还能找到?
有没有技术支持?
谢谢!
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你先按我们的EVM启动的方式(第7页),来检查一下你的板子。
http://www.ti.com.cn/cn/lit/ug/slvubf3a/slvubf3a.pdf
TPS65987D的资料还是比较丰富的:
slvubf3a.pdf p7
3.1 Powering the TPS65987-90EVM The main power supply for the EVM is the barrel jack (J9), which accepts 19 V to 20 V via a barrel jack adapter. The EVM can also be powered with an external power supply on SYS_PWR (pin 1 of J4, J5, J6, or J7). The input voltage can range from 5 V to 20 V, but configure the appropriate power profile for PP_HV in the firmware using the configuration tool. The EVM can also be powered as a sink through a USB Type-C cable from a source adaptor, EVM, or device.
datasheet p23
The TPS65987D is powered from either VIN_3V3, VBUS1, or VBUS2. The normal power supply input is VIN3V3.
In this mode, current flows from VIN_3V3 to LDO3V3 to power the core 3.3-V circuitry and I/Os. A second LDO
steps the voltage down from LDO_3V3 to LDO_1V8 to power the 1.8-V core digital circuitry. When VIn_3V3
power is unavailable and power is available on VBUS1 or VBUS2 , the TPS65987D is powered from VBUS. In
this mode, the voltage on VBUS1 or VBUS 2 is stepped down through an LDO to LDO_3V3.
以上VIN_3v3=3.3V, TPS65987应该就是已经上电了。板子确认VIN-3V3=3.3V
通过mcu作为tps65987和bq25713的主控,配置上有没有什么资料可以作为参考,只有GUI工具吗?tps65987需要作为sink和source一体的,根据typec接口的连接对象不同,或者外部adapter是否接入。
mcu用的stm32,用的硬件iic口,连接到tps iic2 地址为0x38,
总线查询无应答,跳过查询,read 连接正常,数据都为0x00
请问一下有没有技术支持,交流一下,因为之前用bq40z50也测了好久,有些资料就不对。