SNVAA98 January 2024 LM25148 , LM74910-Q1 , TPS38700 , TPS389006 , TPS389006-Q1 , TPS628301 , TPS628302 , TPS628303 , TPS6287B10 , TPS6287B25 , TPS746
- 1
- Abstract
- Trademarks
- 1 Introduction
- 2 Design Parameters
- 3 Schematics
- 4 Design Considerations
- 5 Front-End Protection
- 6 3.3V Always-ON Bias Supply
- 7 5V Pre-Regulator Buck Converter
- 8 Low-Voltage High-Current Core Rail Buck Converter
- 9 On-Board Core Rail Output Load Transient Stepper
- 10Multiple Peripheral Rail Buck Converters Sub-Circuits Schematic
- 11Voltage Supervisor and Sequencer
- 1212-Channel Sequencer Alternative
- 13Summary
- 14References
2 Design Parameters
Table 2-1 show the power rails specifications including voltages and tolerances, load currents, and sequence order for each rail. This reference design has been designed to meet all AI Edge Series power delivery specifications.
Table 2-1 VE2302 Device Power Rail Specifications.
| Rail Name | Voltage | DC Spec. | AC Spec. | Current | Step | Sequence # |
|---|---|---|---|---|---|---|
| VCCINT/VCC_PMC/VCC_PSFP/VCCPSLP/VCC_RAM/VCC_SOC/VCC_IO | 0.8V | ±1% | ±17mV | 39A | 33% | 2 |
| VCCO | 1.5V | ±1% | ±5% | 3A | 100% | 1 |
| VCCAUX/VCCAUX_PMC/VCCAUX_SMON | 1.5V | ±1% | 10mVpp | 1.1A | 100% | 3 |
| GTAVCC | 0.88V | ±2% | 10mVpp | 0.7A | 70% | 4 |
| GTAVTT | 1.2V | ±2% | 10mVpp | 1.3A | 70% | 6 |
| GTAVCCAUX | 1.5V | ±2% | 10mVpp | 0.05A | 70% | 5 |
Figure 2-1 shows the block diagram of the power tree for the VE2302 device.
Figure 2-1 VE2302 Device Minimum Rails Configuration Power Tree Block Diagram