Features
- Input range: +3.0V to +16V
- Supports 20A DC current
- 3.3V compatible tri-state PWM input
- Downslope current sensing
- ±3% accuracy current monitor (IMON) with REFIN input
- 8mV/°C temperature monitor with OT flag
- Comprehensive fault protection for high system reliability
- Shorted HFET and overcurrent protection
- Over-Temperature Protection (OTP)
- VCC Undervoltage Lockout (UVLO)
- Fault reporting outputs (TMON, Fault#, and IMON)
- Up to 1.5MHz switching frequency
- Pb-free (RoHS compliant), 25 Ld 4 x 5 PQFN
Description
The RAA221320 is a Smart Power Stage (SPS) compatible with the ISL68xxx/69xxx Digital Multiphase (DMP) controllers. The SPS has integrated high-accuracy current and temperature monitors that are fed back to the controller to complete a multiphase DC/DC system. These monitors simplify design and increase performance by eliminating the DCR sensing network and associated thermal compensation. An industry-leading thermally enhanced 4x5 PQFN package allows minimal overall PCB real estate.
The SPS features a 3.3V compatible tri-state PWM input that works together with the Renesas multiphase PWM controllers to provide a robust solution in abnormal operating conditions. The SPS also improves system performance and reliability with integrated fault protection of UVLO, shorted HFET, over-temperature, and overcurrent. An open-drain fault reporting pin simplifies the handshake between the SPS and controllers and can disable the controller during startup and fault conditions.
Parameters
| Attributes | Value |
|---|---|
| Output Current (Max) [Rail 1] (A) | 20 |
| Input Voltage (Min) (V) | 3 |
| Input Voltage (Max) (V) | 16 |
| Bias Voltage Range (V) | - |
| Switching Frequency (KHz) | - |
| Qualification Level | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| PQFN | 4.0 x 5.0 x 0.76 | 25 | 0.5 |
Application Block Diagrams
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AMD 4th-Gen EPYC (Genoa) Power & Timing System
Complete power and timing system for AMD Genoa with SVI3, DDR5, and PCIe Gen 5/6 support.
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Additional Applications
- High-frequency and high-efficiency VRM and VRD
- Core, graphic, and memory VRs for microprocessors
- High-density VR for server, networking, and cloud computing
- POL DC/DC converters and video gaming consoles