Table of Contents
Advertisement
Quick Links
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 •
Evaluation Board for the
FEATURES
Full featured evaluation board for the
Configurable synchronous step-down dc-to-dc switching
regulator
Operating voltage range: V
Output voltage: 5 V or adjustable
1 A maximum load
Switching frequency: 500 kHz or adjustable switching
frequency of 300 kHz to 1 MHz
Power saving mode at light load
Precision enabled input pin
Current limit protection
Power good output
SYNC/MODE pin for external synchronization or mode
selection
53 mm × 53 mm board size
DOCUMENTS NEEDED
ADP2442
data sheet
UG-407
user guide
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
ADP2442
Regulator with External Clock Synchronization
ADP2442
= 6 V to 36 V
IN
Evaluation Board User Guide
36 V, 1 A, Synchronous, Step-Down DC-to-DC
GENERAL DESCRIPTION
The
ADP2442-EVALZ
switching regulator design based on the ADP2442, a configurable,
1 A, synchronous, step-down dc-to-dc regulator.
The
ADP2442
regulator that uses a current mode pulse-width modulation
(PWM) control scheme. The
pulse skip mode at light load or forced PWM mode. The power
switch and synchronous rectifier are integrated for minimal
external part count and high efficiency. The
optimized for operation with small ferrite core inductors and
ceramic capacitors to deliver the maximum output power per
square millimeter of the printed circuit board (PCB) area.
The
ADP2442-EVALZ
a switching frequency set to 500 kHz. If needed, the
EVALZ
configuration can be modified by changing the values
of the appropriate passive components.
Complete specifications for the
in the
ADP2442
Devices, Inc., and should be consulted in conjunction with this
user guide when using the evaluation board.
ADP2442-EVALZ
Figure 1.
Rev. 0 | Page 1 of 12
evaluation board is a complete, dc-to-dc
is a synchronous, step-down dc-to-dc switching
ADP2442
can be configured for
is available with 5 V at a 1 A output, with
ADP2442
device can be found
data sheet, which is available from Analog
UG-456
www.analog.com
ADP2442
is
ADP2442-
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Analog Devices ADP2442-EVALZ
Summary of Contents for Analog Devices ADP2442-EVALZ
-
Page 1: Features
ADP2442 36 V, 1 A, Synchronous, Step-Down DC-to-DC Regulator with External Clock Synchronization FEATURES GENERAL DESCRIPTION ADP2442-EVALZ evaluation board is a complete, dc-to-dc Full featured evaluation board for the ADP2442 Configurable synchronous step-down dc-to-dc switching switching regulator design based on the ADP2442, a configurable, 1 A, synchronous, step-down dc-to-dc regulator. -
Page 2: Table Of Contents
Documents Needed ................1 Changing the Output Voltage ............5 General Description ................. 1 Changing the Switching Frequency ..........5 ADP2442-EVALZ ................1 Typical Performance Characteristics ..........6 Revision History ................2 Evaluation Board Schematic and Artwork ........8 Using the Evaluation Board ............. 3 Ordering Information .............. -
Page 3: Using The Evaluation Board
POWERING UP THE EVALUATION BOARD When the output is enabled and the output voltage, V , is in ADP2442-EVALZ evaluation board is provided fully regulation, the logic signal at the PGOOD test point is high. In assembled and tested. Before applying power to the evaluation a typical application, a pull-up resistor from the PGOOD pin to board, follow the procedures in the following sections. -
Page 4: Measuring Evaluation Board Performance
UG-456 Evaluation Board User Guide × MEASURING EVALUATION BOARD PERFORMANCE η × Output Voltage Ripple Measure the input and output voltages as close as possible to the To observe the output voltage ripple, place an oscilloscope probe input and output capacitors to reduce the effect of IR drops. tip at the T3 terminal and connect the probe ground lead at the negative (−) the T4 terminal. -
Page 5: Modifying The Evaluation Board
Evaluation Board User Guide UG-456 MODIFYING THE EVALUATION BOARD When the output voltage of the ADP2442-EVALZ is changed, the ADP2442-EVALZ evaluation board is provided fully output capacitors (C7 and C8), inductor (L1), and compensation assembled and tested for proper operation. The evaluation components (R5 and C10) must be recalculated and changed to board has a fixed 5 V output voltage. -
Page 6: Typical Performance Characteristics
UG-456 Evaluation Board User Guide TYPICAL PERFORMANCE CHARACTERISTICS 5.06 NO LOAD = 12V LOAD 1A = 24V 5.05 = 36V 5.04 5.03 5.02 5.01 5.00 4.99 4.98 4.97 0.01 LOAD (A) Figure 4. Efficiency vs. Load Current, V = 5 V, f = 500 kHz, Pulse Skip Mode Figure 7. - Page 7 Evaluation Board User Guide UG-456 ENABLE LOAD STEP 500mA CH1 100mV CH2 10V M200µs A CH4 720mA CH2 10V M1ms A CH1 1.52V 500mA Ω 71.2% CH3 5V 52.4% Figure 10. Load Transient, V = 24 V, V = 5 V, 500 mA Step Figure 13.
-
Page 8: Evaluation Board Schematic And Artwork
UG-456 Evaluation Board User Guide EVALUATION BOARD SCHEMATIC AND ARTWORK Figure 16. ADP2442-EVALZ Evaluation Board Schematic Rev. 0 | Page 8 of 12... - Page 9 Evaluation Board User Guide UG-456 Figure 17. ADP2442-EVALZ Evaluation Board Top Layer Figure 19. ADP2442-EVALZ Evaluation Board Second Layer Figure 20. ADP2442-EVALZ Evaluation Board Bottom Layer Figure 18. ADP2442-EVALZ Evaluation Board Third Layer Rev. 0 | Page 9 of 12...
-
Page 10: Ordering Information
Sullins PBC01SAAN JP1 PGOOD Jumper Sullins PBC03SAAN JP2 SYNC Jumper Sullins PBC03SAAN T1, T2, T3, T4 Terminal, double turret, brass, 0.078” Keystone 1502-1 36 V, 1 A, synchronous, step-down DC-to-DC regulator Analog Devices ADP2442 Rev. 0 | Page 10 of 12... - Page 11 Evaluation Board User Guide UG-456 NOTES Rev. 0 | Page 11 of 12...
- Page 12 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.
Need help?
Do you have a question about the ADP2442-EVALZ and is the answer not in the manual?
Questions and answers