onsemi NCP51530BDR2G

NCP51530 is a 700 V high-side and low-side driver with 3.5 A source and 3 A sink current drive capability for AC-DC power supplies and inverters. NCP51530 offers best-in-class propagation delay, low quiescent current, and low switching current at high frequencies of operation. This device is tailored for highly efficient power supplies operating at high frequencies. NCP51530 is offered in two versions, NCP51530A/B. NCP51530A has a typical 60 ns propagation delay, while NCP51530B has a typical propagation delay of 25 ns. NCP51530 comes in SOIC8 and DFN10 packages.

For popular topologies such as LLC, half-bridge converters, full-bridge converters, and double-switch forward converters, low-side and high-side drivers are required to perform buffering and level-shifting functions. These devices can drive the gates of top MOSFETs with dynamically changing source nodes, and the bias of the high-side driver is usually provided through a bootstrap circuit. To make modern power supplies more compact and efficient, power supply designers are increasingly inclined to high-frequency operation. High-frequency operation causes higher losses in the driver, thereby reducing the power supply efficiency.

NCP51530 is a 700 V high-side and low-side driver for AC-DC power supplies and inverters. NCP51530 has best-in-class propagation delay, low quiescent current, and low switching current at high frequencies of operation. Therefore, this device can achieve efficient power supply at high frequencies. NCP51530 is available in two versions, NCP51530A/B. NCP51530A has a typical propagation delay of 60 ns, while NCP51530B has a propagation delay of 25 ns. NCP51530 comes in SOIC8 and DFN10 packages. The SOIC8 package of this device is pin-compatible with industry-standard solutions.

NCP51530 has two independent input pins, HIN and LIN, which can be used in various applications. The device also has the characteristic that the logic is still defined when the input is floating. The driver inputs are compatible with CMOS and TTL logic, so they can be easily interfaced with analog and digital controllers. Both the high-side and low-side drivers of NCP51530 have undervoltage lockout functions to ensure operation at the correct VCC and VB voltage levels. The output stage of NCP51530 has a 3.5 A/3 A current source/sink capability and can effectively charge and discharge a 1 nF load within 15 ns.

• High voltage range: Up to 700 V
• NCP51530A: Typical 60 ns Propagation Delay
• NCP51530B: Typical 25 ns Propagation Delay
• Low Quiescent and Operating Currents
• 15 ns Max Rise and Fall Time
• 3.5 A Source / 3 A Sink Currents
• Under−voltage Lockout for Both Channels
• 3.3 V and 5 V Input Logic Compatible
• High dv/dt Immunity up to 50 V/ns
• Pin to Pin Compatible with Industry Standard Half−bridge ICs
• Matched Propagation Delay (7 ns Max)
• High Negative Transient Immunity on Bridge Pin
• DFN10 Package Offers Both Improved Creepage and Exposed Pad

• High−density SMPS for Servers, Telecom and Industrial
• Half/Full−bridge & LLC Converters
• Active Clamp Flyback/Forward Converters
• Solar Inverters & Motor Controls
• Electric Power Steering