Overview
The EN5322QI is a high-efficiency synchronous buck converter produced by Intel Enpirion Power Solutions. This PowerSoC integrates an inductor, PWM controller, MOSFETS, and compensation, making it one of the smallest solutions available. It operates at a high switching frequency of 4 MHz, enabling the use of tiny MLCC capacitors and providing excellent transient performance and reduced output impedance. The internal compensation ensures unconditional stability across all operating conditions. The device is designed to simplify board design, layout, and manufacturing, reducing the overall system cost by minimizing the number of components required.
Key Specifications
| Parameter | Symbol | Typical Value | Units |
|---|---|---|---|
| Operating Input Voltage | VIN | 2.4 - 5.5 | V |
| Under Voltage Lock-out | VUVLO | 2.2 | V |
| UVLO Hysteresis | 0.15 | V | |
| Output Voltage with VID Codes | VOUT | Seven pre-programmed voltages | V |
| Thermal Shutdown | TSD | 155 | °C |
| Thermal Shutdown Hysteresis | TSDHYS | 15 | °C |
| Thermal Resistance: Junction to Ambient | θJA | 36 | °C/W |
| Thermal Resistance: Junction to Case | θJC | 6 | °C/W |
| Switching Frequency | 4 MHz | ||
| Package Dimensions | 4 mm x 6 mm x 1.1 mm QFN |
Key Features
- High-efficiency synchronous buck converter with integrated inductor, PWM controller, MOSFETS, and compensation.
- Operates at 4 MHz, allowing the use of tiny MLCC capacitors.
- Wide control loop bandwidth for excellent transient performance and reduced output impedance.
- Internal compensation for unconditional stability across all operating conditions.
- Three VID output voltage select pins with seven pre-programmed output voltages and an option for external resistor divider.
- Dynamic voltage scaling with smooth transitions between VID programmed output voltages.
- Simplified board design, layout, and manufacturing requirements.
- Reduced system cost by minimizing the number of components required.
Applications
The EN5322QI is suitable for a variety of applications requiring high-efficiency power conversion, including but not limited to:
- Server and data center power supplies.
- Networking equipment.
- Storage systems.
- Industrial control systems.
- Automotive and aerospace systems requiring compact and efficient power solutions.
Q & A
- What is the operating input voltage range of the EN5322QI?
The operating input voltage range is 2.4 V to 5.5 V. - What is the switching frequency of the EN5322QI?
The switching frequency is 4 MHz. - How many pre-programmed output voltages does the EN5322QI offer?
The EN5322QI offers seven pre-programmed output voltages. - What is the thermal shutdown temperature of the EN5322QI?
The thermal shutdown temperature is 155 °C. - What is the package type and dimensions of the EN5322QI?
The package type is QFN, and the dimensions are 4 mm x 6 mm x 1.1 mm. - Does the EN5322QI support dynamic voltage scaling?
Yes, it supports dynamic voltage scaling with smooth transitions between VID programmed output voltages. - What are the benefits of using the EN5322QI in system design?
The benefits include simplified board design, layout, and manufacturing requirements, and a reduction in the overall system cost by minimizing the number of components required. - What type of capacitors can be used with the EN5322QI due to its high switching frequency?
Tiny MLCC (Multi-Layer Ceramic Capacitors) can be used. - How does the internal compensation of the EN5322QI contribute to its performance?
The internal compensation ensures unconditional stability across all operating conditions. - What are some common applications for the EN5322QI?
Common applications include server and data center power supplies, networking equipment, storage systems, industrial control systems, and automotive and aerospace systems.
