Overview
The ADP3110A, produced by onsemi, is a single-phase, 12 V MOSFET gate driver optimized for driving the gates of both high-side and low-side power MOSFETs in a synchronous buck converter. This device is designed to enhance efficiency and reduce switching losses in high-current, multi-phase buck regulators, particularly those converting 12 V rails to core voltages required by complex logic chips. The ADP3110A operates with a single PWM input signal, simplifying the control of high-side and low-side MOSFETs.
Key Specifications
| Characteristic | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage Range | 4.6 | 13.2 | V | ||
| Supply Current | BST = 12 V, IN = 0 V | 0.7 | 5.0 | mA | |
| Propagation Delay | 25 | ns | |||
| Transition Time | 30 | ns | |||
| Operating Ambient Temperature | 0 | 85 | °C | ||
| Operating Junction Temperature | 0 | 150 | °C | ||
| Load Capability | 3000 pF |
Key Features
- Dual bootstrapped design for driving high-side and low-side MOSFETs in synchronous buck converters.
- Capable of driving a 3000 pF load with a 25 ns propagation delay and a 30 ns transition time.
- Internal adaptive nonoverlap circuitry to reduce switching losses by preventing simultaneous conduction of both MOSFETs.
- Floating top driver design to accommodate VBST voltages.
- Logic-level input for primary control of drive outputs.
- Output disable feature to force DRVH and DRVL low when needed.
- Wide operating voltage range for optimized efficiency.
Applications
- High-current, multi-phase buck regulators.
- Conversion of 12 V rails to core voltages required by complex logic chips.
- Power supply units (PSUs) for servers, data centers, and other high-power applications.
- Point-of-load (POL) converters in various electronic systems.
Q & A
- What is the primary function of the ADP3110A?
The ADP3110A is a MOSFET gate driver designed to drive the gates of both high-side and low-side power MOSFETs in synchronous buck converters.
- What is the operating voltage range of the ADP3110A?
The ADP3110A operates within a supply voltage range of 4.6 V to 13.2 V.
- What is the propagation delay and transition time of the ADP3110A?
The propagation delay is typically 25 ns, and the transition time is typically 30 ns.
- What is the load capability of the ADP3110A?
The ADP3110A can drive a load of up to 3000 pF.
- What is the purpose of the internal adaptive nonoverlap circuitry?
The internal adaptive nonoverlap circuitry reduces switching losses by preventing simultaneous conduction of both MOSFETs.
- How does the output disable feature work?
The output disable feature forces DRVH and DRVL low when the OD pin is set low, disabling normal operation.
- What are the typical applications of the ADP3110A?
The ADP3110A is typically used in high-current, multi-phase buck regulators and in converting 12 V rails to core voltages for complex logic chips.
- What is the operating temperature range of the ADP3110A?
The operating ambient temperature range is from 0°C to 85°C, and the operating junction temperature range is from 0°C to 150°C.
- How does the floating top driver design work?
The floating top driver design accommodates VBST voltages and is referenced to the switch node (SW) pin, allowing for efficient high-side MOSFET operation.
- What is the significance of the logic-level input in the ADP3110A?
The logic-level input provides primary control of the drive outputs, simplifying the control of high-side and low-side MOSFETs with a single PWM input signal.
