SNVAA47 May   2022 LP8732-Q1 , LP87521-Q1 , LP87524-Q1 , LP87561-Q1 , LP87562-Q1

 

  1. 1Abstract
    1.     Trademarks
  2. 1Design Parameters
  3. 2Power Solution
  4. 3Sequencing
    1. 3.1 Startup, Application Processor
    2. 3.2 Shutdown, Application Processor
    3. 3.3 Startup, Safety
    4. 3.4 Shutdown, Safety
    5. 3.5 Startup, RTC
    6. 3.6 Shutdown, RTC
  5. 4Schematic
  6. 5Software Drivers
  7. 6Recommended External Components
  8. 7Measurements
  9. 8Summary
  10. 9References

1 Design Parameters

Table 1-1 shows the power rails, load requirements and Measurements shows typical performance data.

Table 1-1 Design Parameters
VOLTAGE (V) RAIL NAME MAX LOAD (mA) LOAD CAPABILITY (mA) SOURCE Domain
1.8 VDD_RTC_1V8 < 500 500 TPS74501-Q1 (LDO) RTC
0.8 VDDIO_RTC_0V8 < 500 500 TPS74501-Q1 (LDO) RTC
0.8 VSFT_0V8 1500 2000 LP873248-Q1 Buck0 Safety
1.8 VDDA_SAF 720 2000 LP873248-Q1 Buck1 Safety
3.3 VDDIO_GPIO(1) < 300 300 LP873248-Q1 LDO0 Safety
3.3 VDDIO_GPIO(2) < 300 300 LP873248-Q1 LDO1 Safety
0.8 VDD_AP_0V8, VDD_DRAM_0V8 16000 16000 LP875610B-Q1 B0+B1+B2+B3 Application Processor
0.85 VDD_CPU_0V8 12000 12000 LP87562R-Q1 B0+B1+B2 Application Processor
0.8 VDD_MIPI_0V8, VDD_PCIE_0V8, VDD_USB 900 4000 LP87562R-Q1 B3 Application Processor
0.85 VDD_GPU_0V8 10000 10000 LP87521S-Q1 B0+B1+B2+B3 Application Processor
1.8 VDDA_1V8 2280 2500 LP875241J-Q1 B0 Application Processor
3.3 VDDH_3V3 1200 2500 LP875241J-Q1 B1 Application Processor
1.1 VDDQ_DRAM 3000 4000 LP875241J-Q1 B2 Application Processor
0.6 VDDLP_DRAM 600 1000 LP875241J-Q1 B3 Application Processor
1.8 VDD_LP4_1V8 200 500 TPS74501-Q1 (LDO) Application Processor