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NCV8851BDBGEVB

NCV8851B Automotive Grade Synchronous Buck Controller Evaluation Board User's Manual

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NCV8851BDBGEVB

NCV8851B Automotive

Grade Synchronous Buck

Controller Evaluation Board

User's Manual

http://onsemi.com

EVAL BOARD USER’S MANUAL

Description

The NCV8851B Evaluation Board provides a convenient

way to evaluate and integrate a complete high-efficiency

synchronous buck converter design. No additional

components are required, other than dc supplies for the input

voltage and enable pin. The board also can be connected to

an external clock source to synchronize the switching

frequency or for spread spectrum operation. The board is

configured for a 5.0 V output with a 170 kHz switching

frequency and a 4 A current limit, intended for applications

requiring over 3 A of current.

Additionally, modifying the NCV8851B Evaluation

Board for different output voltage, switching frequency or

current limit is straightforward, requiring minimal

component changes.

Key Features

• 5.0 V Output Voltage

• 91% Efficiency at 3 A

• 4 A Average Current Limit (ACL)

• 170 kHz Switching Frequency

• Average Current Mode Control

• Automotive Grade for up to TA = 105°C

• Wide Input Voltage Range of 4.5 V to 40 V

• Regulates through Load Dump Conditions

• 1.0 mA Maximum Quiescent Current in Sleep Mode

• Programmable Fixed Frequency – 170 kHz to 500 kHz

• External Clock Synchronization up to 600 kHz

• Easy to Modify for Other Applications

VIN

GND

SYNC

Output

Inductor

Output

Capacitor

VOUT

Figure 1. NCV8851B Evaluation Board

© Semiconductor Components Industries, LLC, 2016

1

February, 2016 − Rev. 2

NCV8851B

Enable

Publication Order Number:

EVBUM2119/D

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