Datasheet > ADP1828HC-EVALZ

ADP1828HC-EVALZ

更新时间： 2024-01-17 20:00:05

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
32页	840K
描述
Synchronous Buck PWM, Step-Down, DC-to-DC Controller

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ADP1828HC-EVALZ 数据手册

Synchronous Buck PWM,

Step-Down, DC-to-DC Controller

ADP1828

to regulate an output voltage as low as 0.6 V to 85% of the input

voltage and is sized to handle large MOSFETs for point-of-load

regulators. The ADP1828 is ideal for a wide range of high power

applications, such as DSP and processor core I/O power, and

general-purpose power in telecommunications, medical imaging,

PC, gaming, and industrial applications. It operates from input

bias voltages of 3 V to 18 V with an internal LDO that generates

a 5 V output for input bias voltages greater than 5.5 V.

FEATURES

Wide bias voltage range 3.0 V to 18 V

Wide power stage input range 1 V to 24 V

Wide output voltage range: 0.6 V to 85% of input voltage

0.85% accuracy at 0^oC to 70^oC

All N-channel MOSFET design for low cost

Fixed-frequency operation at 300 kHz, 600 kHz, or resistor

adjustable 300 kHz to 600 kHz

Clock output for synchronizing other controllers

No current sense resistor required

Internal linear regulator

The ADP1828 operates at a pin-selectable, fixed switching

frequency of either 300 kHz or 600 kHz, or at any frequency

between 300 kHz and 600 kHz with a resistor. The switching

frequency can also be synchronized to an external clock up to

2× the part’s nominal oscillator frequency. The clock output

can be used for synchronizing additional ADP1828s (or the

ADP1829 controllers), thus eliminating the need for an external

clock source. The ADP1828 includes soft start protection to

limit any inrush current from the input supply during startup,

reverse current protection during soft start for a precharged

output, as well as a unique adjustable lossless current-limit

scheme utilizing external MOSFET R_DSONsensing.

Voltage tracking for sequencing

Soft start and thermal overload protection

Overvoltage and undervoltage power-good indicator

15 μA shutdown supply current

Available in a 20-lead QSOP

APPLICATIONS

Telecom and networking systems

Base station power

Set-top boxes, game consoles

Printers and copiers

Medical imaging systems

DSP and microprocessor core power supplies

DDR termination

For applications requiring power-supply sequencing, the

ADP1828 provides a tracking input that allows the output

voltage to track during startup, shutdown, and faults. The

additional supervisory and control features include thermal

overload, undervoltage lockout, and power good.

GENERAL DESCRIPTION

The ADP1828 operates over the −40°C to +125°C junction

temperature range and is available in a 20-lead QSOP.

The ADP1828 is a versatile and synchronous PWM voltage

mode buck controller. It drives an all N-channel power stage

= 10V TO 18V

180µF

1µF

×2

20V

1µF

BST

TRK

VREG PV

0.47µF

CSL

ADP1828

OUTPUT

1.8V, 20A

L1 = 0.82µH

1µF

100kΩ

OUT1

OUT2

FREQ

SYNC

PGOOD

COMP

1.8kΩ

47µF

1000µF

×2

7.5kΩ

X5R

6.3V

680pF

PGND

20kΩ

CLKOUT

CLKSET

10kΩ

20kΩ

AGND PGND

33pF

200nF

GND

AGND

5.6nF

f_SW= 300kHz

D1: BAT54

: SANYO, OSCON 20SP180M

M1: INFINEON, BSC080N03LS

: SANYO, POSCAP 2R5TPD1000M5

M2: INFINEON, 2 × BSC030N03LS

OUT2

L1: WURTH ELEKTRONIC, 0.82µH, 744355182

Figure 1. Typical Application Circuit with 20 A Output

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights ofthird parties that may result fromits use. Specifications subject to change without notice. No

licenseis granted byimplication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与ADP1828HC-EVALZ相关器件

型号	品牌	获取价格	描述	数据表
ADP1828LC-EVALZ	ADI	获取价格	Synchronous Buck PWM, Step-Down, DC-to-DC Controller
ADP1828YRQZ-R7	ADI	获取价格	Synchronous Buck PWM, Step-Down, DC-to-DC Controller
ADP1829	ADI	获取价格	Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking
ADP1829ACPZ-R7	ADI	获取价格	Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking
ADP1850	ADI	获取价格	Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
ADP1850ACPZ-R7	ADI	获取价格	Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
ADP1851	ADI	获取价格	Wide Range Input, Synchronous, Step-Down DC-to-DC Controller
ADP1851ACPZ-R7	ADI	获取价格	Wide Range Input, Synchronous, Step-Down DC-to-DC Controller
ADP1851-EVALZ	ADI	获取价格	Wide Range Input, Synchronous, Step-Down DC-to-DC Controller
ADP1853	ADI	获取价格	Synchronous, Step-Down DC-to-DC Controller

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