Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The UCC28951-Q1 controller is an enhanced version of the UCC28950-Q1. It is a fully compatible drop-in replacement for the UCC28950-Q1. Refer to application note Making the Correct Choice: UCC28950-Q1 or UCC28951-Q1 to determine which controller to use.The UCC28951-Q1 uses advanced control of the full-bridge in addition to active control of the synchronous rectifier (SR) output stage. 

Programmable delays ensure ZVS operation over a wide range of operating conditions, while the load current naturally tunes the switching delays of the secondary-side synchronous rectifiers(SR). This functionality maximizes overall system efficiency. 

The 24-pin, TSSOP package complies with RoHS requirements.

Features

• Qualified for automotive applications

• AEC-Q100 qualified with the following results:

– Device temperature grade 1: –40°C to +125°C ambient operating temperature range

– Device HBM ESD classification level H2

– Device CDM ESD classification level C3B

• Enhanced zero-voltage switching (ZVS) range

• Direct synchronous rectifier (SR) control

• Light-load efficiency management including:

– Burst mode operation

– Discontinuous conduction mode (DCM), dynamic SR on/off control with programmable threshold

– Programmable adaptive delay

• Average- or peak-current mode control with programmable slope compensation and voltagemode control

• Closed-loop soft-start and enable function

• Programmable switching frequency up to 1 MHz with bidirectional synchronization

• (±3%) cycle-by-cycle current limit protection with hiccup mode support

• 150-µA start-up current

• VDD undervoltage lockout

• Wide temperature range: –40°C to +125°C

Applications

• Electric vehicle inverters

• Electric vehicle onboard chargers

• Solar inverters

• UPS

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.