Overview
The NCP51530BMNTWG, produced by onsemi, is a high-performance, high and low side gate driver designed for use in AC-DC power supplies and inverters. This device is optimized for high-frequency operations, offering best-in-class propagation delay, low quiescent current, and low switching current. It is available in two versions: NCP51530A and NCP51530B, with typical propagation delays of 60 ns and 25 ns, respectively. The NCP51530 comes in SOIC8 and DFN10 packages, with the SOIC8 package being pin-to-pin compatible with industry standard half-bridge ICs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| High Side Voltage Range | Up to 700 | V |
| Propagation Delay (NCP51530A) | 60 | ns |
| Propagation Delay (NCP51530B) | 25 | ns |
| Source Current | 3.5 | A |
| Sink Current | 3.0 | A |
| Rise and Fall Time | 15 | ns |
| Input Logic Compatibility | 3.3 V and 5 V | - |
| dv/dt Immunity | Up to 50 | V/ns |
| Junction Temperature | -55 to 150 | °C |
| Package Types | SOIC8, DFN10 | - |
Key Features
- High voltage range up to 700 V
- Low quiescent and operating currents
- Fast propagation delay: 60 ns for NCP51530A and 25 ns for NCP51530B
- 3.5 A source and 3 A sink current drive capability
- Under-voltage lockout for both high and low side drivers
- 3.3 V and 5 V input logic compatibility
- High dv/dt immunity up to 50 V/ns
- Pin-to-pin compatibility with industry standard half-bridge ICs
- Matched propagation delay (7 ns max)
- High negative transient immunity on bridge pin
- DFN10 package offers improved creepage and exposed pad applications
Applications
- High-density SMPS for servers, telecom, and industrial applications
- Half-bridge and full-bridge converters
- LLC converters
- Active clamp flyback/forward converters
- Solar inverters and motor controls
- Electric power steering systems
Q & A
- What is the maximum high side voltage range of the NCP51530?
The NCP51530 has a maximum high side voltage range of up to 700 V.
- What are the typical propagation delays for NCP51530A and NCP51530B?
The NCP51530A has a typical propagation delay of 60 ns, while the NCP51530B has a typical propagation delay of 25 ns.
- What is the source and sink current capability of the NCP51530?
The NCP51530 has a 3.5 A source and 3 A sink current drive capability.
- What are the package types available for the NCP51530?
The NCP51530 is available in SOIC8 and DFN10 packages.
- Is the NCP51530 compatible with 3.3 V and 5 V logic signals?
Yes, the NCP51530 is compatible with both 3.3 V and 5 V input logic signals.
- What is the dv/dt immunity of the NCP51530?
The NCP51530 has a dv/dt immunity of up to 50 V/ns.
- What are some of the key applications of the NCP51530?
The NCP51530 is used in high-density SMPS for servers, telecom, and industrial applications, as well as in half-bridge and full-bridge converters, LLC converters, active clamp flyback/forward converters, solar inverters, motor controls, and electric power steering systems.
- Does the NCP51530 have under-voltage lockout features?
Yes, the NCP51530 has under-voltage lockout features for both high and low side drivers.
- How does the NCP51530 handle negative transient voltages?
The NCP51530 has high negative transient immunity on the bridge pin and can handle negative transient voltages, but it is recommended to minimize these voltages through careful PCB design and component selection.
- What is the significance of the bootstrap circuit in the NCP51530?
The bootstrap circuit is crucial for providing the bias supply to the high side driver, and selecting the right value of the bootstrap capacitor is important to ensure robust operation and prevent shutdown due to voltage drops below UVLO levels.
