Overview
The ADP3110AKRZ-RL is a dual bootstrapped, 12 V MOSFET driver produced by onsemi. This component is designed to drive the gates of both high-side and low-side power MOSFETs in synchronous buck converter topologies. It is optimized for high current multi-phase buck regulators, particularly those converting a 12 V rail directly to the core voltage required by complex logic chips. The driver operates with a single PWM input signal, simplifying the control of both high-side and low-side MOSFETs.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | 4.6 | - | 13.2 | V |
| Operating Ambient Temperature (TA) | 0 | - | 85 | °C |
| Operating Junction Temperature (TJ) | 0 | - | 150 | °C |
| Supply Current (ISYS) | 0.7 | - | 5.0 | mA |
| Input Voltage High (VPWM_HI) | - | - | 2.0 | V |
| Input Voltage Low (VPWM_LO) | - | - | 0.8 | V |
| Propagation Delay (tpdhDRVL, tpdlDRVL) | 12 | 15 | 20 | ns |
| Output Delay (tpdhOD, tpdlOD) | 20 | 25 | 35 | ns |
| Undervoltage Lockout (UVLO) Startup | 3.9 | 4.3 | 4.5 | V |
| Undervoltage Lockout (UVLO) Shutdown | 3.7 | 4.1 | 4.3 | V |
| UVLO Hysteresis | 0.1 | 0.2 | 0.4 | V |
| Package Type | - | - | SOIC-8 | - |
| Mounting Type | - | - | Surface Mount | - |
Key Features
- Dual Bootstrapped Design: The ADP3110AKRZ-RL features a dual bootstrapped design, allowing it to drive both high-side and low-side MOSFETs efficiently.
- High and Low Side Drivers: Each driver is capable of driving a 3 nF load at frequencies up to 1 MHz, making it suitable for high-frequency applications.
- Internal Adaptive Nonoverlap Circuitry: This feature reduces switching losses by preventing simultaneous conduction of both MOSFETs, enhancing power conversion efficiency.
- Bootstrap Circuit: The high-side driver uses a bootstrap circuit to generate the gate voltage, ensuring efficient operation without the need for an external voltage source.
- Undervoltage Lockout (UVLO): The device includes UVLO to prevent operation below a certain voltage threshold, ensuring safe and reliable operation.
- Wide Operating Voltage Range: The driver operates from 4.6 V to 13.2 V, providing flexibility in various power supply configurations.
- Low Propagation Delays: With propagation delays as low as 12 ns, this driver is suitable for high-speed switching applications.
Applications
The ADP3110AKRZ-RL is primarily used in synchronous buck converter topologies, particularly in high current multi-phase buck regulators. These regulators are essential in converting a 12 V rail directly to the core voltage required by complex logic chips in various electronic systems.
- Power Supplies: Used in DC-DC converters for efficient power conversion.
- High-Performance Computing: Drives MOSFETs in power supplies for servers, data centers, and other high-performance computing applications.
- Industrial and Automotive Systems: Suitable for use in industrial power systems and automotive electronics where high efficiency and reliability are critical.
Q & A
- What is the primary function of the ADP3110AKRZ-RL?
The ADP3110AKRZ-RL is a dual MOSFET driver designed to drive the gates of both high-side and low-side power MOSFETs in synchronous buck converter topologies.
- What is the operating voltage range of the ADP3110AKRZ-RL?
The device operates from 4.6 V to 13.2 V.
- What is the maximum operating temperature of the ADP3110AKRZ-RL?
The maximum operating ambient temperature is 85°C, and the maximum junction temperature is 150°C.
- How does the bootstrap circuit work in the ADP3110AKRZ-RL?
The bootstrap circuit generates the gate voltage for the high-side driver using an external diode and bootstrap capacitor, which charges up to VCC during startup and is recharged during each cycle.
- What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature prevents the device from operating below a certain voltage threshold, ensuring safe and reliable operation.
- What is the propagation delay of the ADP3110AKRZ-RL?
The propagation delay is as low as 12 ns for the low-side driver and 20 ns for the output delay.
- Can the ADP3110AKRZ-RL drive high-frequency loads?
Yes, it can drive loads up to 3 nF at frequencies up to 1 MHz.
- What type of package does the ADP3110AKRZ-RL come in?
The device comes in an SOIC-8 package.
- Is the ADP3110AKRZ-RL RoHS compliant?
Yes, the ADP3110AKRZ-RL is RoHS compliant.
- What are some common applications of the ADP3110AKRZ-RL?
Common applications include DC-DC converters, high-performance computing power supplies, and industrial and automotive electronics.
