Analog Devices / Maxim Integrated MAX20846 Smart Power-Stage ICs
Analog Devices/Maxim Integrated MAX20846 Smart Power-Stage ICs are designed to work with controllers to implement a high-density multiphase voltage regulator. These ICs with integrated LDO, current, and temperature sensors feature 300kHz to 1.3MHz switching frequency and offer 96.1% peak efficiency. The MAX20846 4x6 power-stage ICs include self-protection functions such as VX short and overtemperature shutdown, supply Undervoltage Lockout (UVLO), I/O open/short, and main power-supply Overvoltage Lockout (OVLO). These ICs are used in Artificial Intelligence (AI) and Machine Learning (ML) ASICs, graphics processors, servers, workstations, and enterprise storage.
Features
- Space-optimized solution:
- Monolithic and smart power-stage
- Phase-current steering for thermal balance
- 24mm2 footprint
- 96.1% peak efficiency:
- 6-phase, 400kHz, 12V VIN, 1.8V VOUT
- 300kHz to 1.3MHz switching frequency range
- Telemetry and fault reporting through controller IC PMBus:
- Accurate temperature monitoring and reporting
- Accurate per-phase current reporting
- Fault_ID indicates parallel phase fault type
- Advanced self-protection (varies with part variant):
- Boost refresh
- Supply and boost Undervoltage Lockout (UVLO) protection
- Fast overcurrent protection
- Inductor saturation protection
- Input supply Overvoltage Lockout (OVLO) protection
- VX short and overtemperature shutdown
- VX open and short detection at power-up
- Open/short pin detection during startup
Applications
- High-current multiphase-voltage regulators:
- VR13, VR13.HC, and VR14 CPU
- Networking ASICs
- Artificial Intelligence (AI) and Machine Learning (ML) ASICs
- Graphics processors
- Servers, workstations, and enterprise storage
- Communications and networking equipment
Typical Operating Circuit
Paskelbta: 2024-04-22
| Atnaujinta: 2024-05-06