Analog Devices: ADP1851-EVALZ Evaluation Board for ADP1851 Step-Down DC-to-DC Controller

atomar — Fri, 15 Mar 2013 09:23:04 GMT

Current Revision posted to Documents by atomar on 3/15/2013 9:23:04 AM

BUY NOWBUY NOW

Kit Overview

The Analog Devices ADP1851-EVALZADP1851-EVALZ is an evaluation board to evaluate ADP1851ADP1851. The input range for this evaluation board is 9 V to 15 V, and the regulated output voltage(Vout) is 1.8 V with a maximum 25 A output current. The switching frequency (fSW) of 600 kHz is set to achieve high efficiency. The switching frequency can be also synchro-nized to an external clock signal applied to the SYNC input.

The ADP1851ADP1851 is a wide range input, dc-to-dc, synchronous buck controller capable of running from commonly used 3.3 V to 12 V (up to 20 V) voltage inputs. The device nominally operates in current mode with valley current sensing providing the fastest step response for digital loads. It can also be configured as a voltage mode controller with low noise and crosstalk for sensitive loads.

The ADP1851ADP1851 is ideal in system applications requiring multiple output voltages. The ADP1851 includes a synchronization feature to eliminate beat frequencies between switching devices. It also provides accurate tracking capability between supplies and includes precision enable and power-good functions for simple, robust sequencing.

The ADP1851ADP1851 provides a high speed, high peak current gate driving capability to enable energy efficient power conversion. The device can be configured to operate in power saving mode by skipping pulses, reducing switching losses, and improving efficiency at light load and standby conditions.

The accurate current limit allows design within a narrower range of tolerances and can reduce overall converter size and cost. The ADP1851ADP1851 can regulate down to 0.6 V output using a high accuracy reference with ±1% tolerance over the temperature range of −40°C to +125°C.

Key Applications: Intermediate bus and POL systems requiring sequencing and tracking, including Telecom base station and networking, Industrial and instrumentation, Medical and healthcare

More Development Kits and Tools
	More Analog Devices Analog Development Kits		Analog Devices MCU based Development Kits
	Development Platforms & Kits		element14 Knode

Technical Documents

Learning Center

Type	Description
User Guide	ADI: User Guide (UG-443) for ADP1851 Evaluation Board
Datasheet	ADI: Datasheet for ADP1851 Wide Range Input, Synchronous, Step-Down DC-to-DC Controller (Rev 0)

Design Elements

Type	Description
Reference Design	ADI: Reference Design for ADP1851_53 Buck Designer Tool

Video

Kit Features

Features of ADP1851-EVALZADP1851-EVALZ:

Input voltage range: 9 V to 15 V
Output voltage: 1.8 V
Output current: up to 25 A
Switching frequency: 600 kHz
Operates in PWM or PSM
Designed for evaluation of the ADP1851ADP1851 functionality
Flexible and easy to re-configure and modify

Features of ADP1851ADP1851:

Input voltage range: 2.75 V to 20 V
Output voltage range: 0.6 V to 90% VIN
Maximum output current of more than 25 A
Current mode architecture
Configurable to voltage mode
±1% output voltage accuracy over temperature
Voltage tracking
Programmable frequency: 200 kHz to 1.5 MHz
Synchronization input
Power saving mode at light load
Precision enable input
Power good with internal pull-up resistor
Adjustable soft start
Programmable current sense gain
Integrated bootstrap diode
Starts into a precharged load
Externally adjustable slope compensation
Suitable for any output capacitor
Overvoltage and overcurrent-limit protection
Thermal overload protection
Input undervoltage lockout (UVLO)
Available in 16-lead, 4 mm × 4 mm LFCSP
Supported by ADIsimPower design tool

Kit Contents

The Analog Devices ADP1851-EVALZADP1851-EVALZ supplied with below contents:

ADP1851-EVALZADP1851-EVALZ ADP1851ADP1851 Evaluation Board

Tags: adp1851, adp1851-evalz, evaluation_board, analog_devices