关于AWR1443BOOST单板上的两个LDO的用途。

Other Parts Discussed in Thread: AWR1443BOOST, TPS7A8101, AWR1243, AWR1243BOOST

你好

AWR1443BOOST 单板上有两个LDO,

REVB版本上是TPS7A8101QDRBRQ1(1.8V) 和TPS7A8801RTJR(1.3V),SCH上的注释是“LDOs ARE FOR DEBUG PURPOSES ONLY DURING LDO OPERATION PMIC_1V8 IS 2.3V AND PMIC_1V0 IS 1.8V ”

1.请问这里所说的调试是指你们TI芯片定型时候的调试,还是客户产品板上某些功能的调试?我们现在要使用这个芯片做产品,产品上是否要保留这两个LDO呢? 这里所说的具体的调试功能时什么? 

原理图REVA版本上也有两个LDO,分别为TPS7A8101 (1.8V)和TPS7A8801 (1.3V)

2. REVB没有使用REVA上的LDO是有什么特殊的原因吗?而且PMIC输出的四路电压的电压值也变化了,这是什么原因呢?

3.swru507b--AWR1443, AWR1243 Evaluation Module有提及LDO bypass的功能,但是下面这段描述我不是太理解,可否帮忙解读一下?

3.1.文中提及AWR1443BOOST use a 1.0-V supply on the RF1 and RF2 power rails,但是DEMO板上目前这两路电源都是PMIC产生的且标注为1.3V,这个是怎么回事?

3.2还有下面的“To support the third transmitter, the VOUT_PA output is connected to the RF2 power rail. For best performance and to prevent damage to the device, select the 'RF LDO Bypass Enable' and 'PA LDO I/P Disable' options in the Static Configuration when using mmWave Studio. “这句描述的是怎么样一种场景呢?

The AWR1243BOOST and AWR1443BOOST use a 1.0-V supply on the RF1 and RF2 power rails. To
support the third transmitter, the VOUT_PA output is connected to the RF2 power rail. For best
performance and to prevent damage to the device, select the 'RF LDO Bypass Enable' and 'PA LDO I/P
Disable' options in the Static Configuration when using mmWave Studio. Additionally, the LDO bypass can
be configured using the AWR_RF_LDO_BYPASS_SB API. To enable the RF LDO Bypass and PA LDO
I/P Disable through the API, issue an ar1.RfLdoBypassConfig(0x3) command.

不胜感激。

Regards