High current synchronous buck power module AOS AOZ5038QI-05 designed for power conversion in compact electronic systems
Product Overview
The AOZ5038QI is a high-efficiency synchronous buck DrMOS power module designed for demanding applications. It integrates two asymmetrical MOSFETs and a driver in a compact 5mm x 5mm QFN package, minimizing parasitic inductance for reduced EMI. The module offers high continuous output current of 50A and peak current of up to 60A, with a wide power supply range of 4.5V to 25V. It supports up to 2MHz switching operation and features Tri-state PWM input compatibility, Under-Voltage LockOut (UVLO) protection, and a single FCCM pin for control over shutdown, diode emulation, and continuous conduction mode (CCM). The integrated bootstrap diode and optimized pin-out further enhance its versatility and ease of integration into server, notebook, VRM, point-of-load, memory, and graphic card applications.
Product Attributes
- Brand: AOS (Alpha and Omega Semiconductor)
- Package Type: QFN5x5_31L
- Certifications: RoHS compliant, AOS Green Products (reduced Halogens)
- Form Factor: DrMOS Power Module
- IMVP8 Compliance: Fully compatible with Intel DrMOS specification IMVP8 (VRM13) in form, fit, and function.
Technical Specifications
| Parameter | Rating | Unit |
|---|---|---|
| Power Supply Range (VIN) | 4.5 to 25 | V |
| Driver Supply Range (VCC, PVCC) | 4.5 to 5.5 | V |
| Continuous Output Current | 50 | A |
| Peak Output Current | Up to 60 | A |
| Switching Frequency | Up to 2 | MHz |
| Switching Operation | 200kHz to 2 | MHz |
| PWM Input Compatibility | Tri-state PWM input compatible | |
| Control Pin (FCCM) | Shutdown / Diode Emulation / CCM operation | |
| Integrated Components | Bootstrap Schottky diode | |
| Package Dimensions | 5 x 5 | mm |
| Operating Temperature Range | -40 to +85 | C |
| Under-Voltage LockOut (UVLO) Threshold (Rising) | 3.5 | V |
| Under-Voltage LockOut (UVLO) Threshold (Falling) | 3.1 | V |
| UVLO Hysteresis | 500 | mV |
| Low-Side Minimum On-Time (DCM mode) | 600 | ns |
| PWM Input High Threshold (VPWMH) | 4.1 | V |
| PWM Input Low Threshold (VPWML) | 0.7 | V |
| PWM Input Tri-State Threshold Window (VTRI) | 1.65 to 3.50 | V |
| FCCM Enable Threshold (VFCCMH) | 3.80 | V |
| FCCM Disable Threshold (VFCCML) | 1.20 | V |
| PS4 Exit Latency (tPS4_EXIT) | 15 | s |
| PWM Falling to GH Turn-Off (tPDLU) | 18 | ns |
| PWM Raising to GL Turn-Off (tPDLL) | 25 | ns |
| GL Falling to GH Rising Deadtime (tPDHU) | 20 | ns |
| GH/VSWH Falling to GL Rising Deadtime (tPDHL) | 20 | ns |
| Tri-State Shutdown Delay (tTSSHD) | 135 | ns |
| Tri-State Propagation Delay (tPTS) | 35 | ns |
2411272238_AOS-AOZ5038QI-05_C5587856.pdf
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