Other Parts Discussed in Thread: REF3030
Tool/software:
Test board: 28P650DK9 minimum system, including DSP, crystal oscillator, RC reset circuit, decoupling capacitor REF3030， Please refer to the welding 28P650DK9 minimum system for the specific schematic diagram PDF；
Test conditions: The 3.3V power supply of the board is directly powered by RIGOL's DP32 adjustable power supply, and the 1.2V is provided by the internal LOD of 28P650;
Test 1: After soldering a brand new DSP, there is no internal program. The external power supply shows that the DSP has a 3.3V current of 0.16A and a power consumption of 0.528W, as shown in Figure 1. The shell temperature of the DSP is approximately 42 degrees Celsius (with an ambient temperature of 23 degrees Celsius)
Test 2: DSP uses JTAG emulator to load routine... ti \ C2000 \ C2000Ware5_03_00.00 \ Device_Support \ 8p65x \ examples \ cpu1 \ LED running, external power supply shows DSP 3.3V current of 0.23A, power consumption of 0.759W, as shown in Figure 2, DSP shell temperature is about 42 degrees (ambient temperature of 23 degrees)
Test 3: DSP uses JTAG emulator to load routine... ti \ C2000 \ C2000Ware5_03_00.00 \ Device_Support \ 8p65x \ examples \ cpu1 \ led. Add a function during initialization to turn off all peripheral clocks. The external power supply shows DSP 3.3V current of 0.13A and power consumption of 0.429W, as shown in Figure 3. The DSP's shell temperature is approximately 42 degrees Celsius (ambient temperature of 23 degrees Celsius)
Question: Is the power consumption of 0.528W too high for DSP without any program? This power consumption far exceeds the power consumption of 28388D，Can you help test the power consumption with EVM？
