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Evaluation Board User Guide

UG-437

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

Evaluating the ADP1614 650 kHz/1.3 MHz, 4 A, Step-Up, PWM,

DC-to-DC Switching Converter

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. 0 | Page 1 of 8

FEATURES

2.5 V to 5.5 V input voltage range

650 kHz or 1.3 MHz fixed frequency options

Adjustable current limit up to 4 A

Output voltage

5 V for ADP1614-650-EVALZ

15 V for ADP1614-1.3-EVALZ

Jumper for enable/shutdown control

Components optimized for the indicated output voltages

GENERAL DESCRIPTION

The ADP1614 evaluation board is a complete step-up, dc-to-dc

switching converter application with components selected to allow

operation over the full range of input and load conditions for the

5 V (ADP1614-650-EVALZ) and 15 V (ADP1614-1.3-EVA L Z )

output voltages. The boost switching frequency is fixed to either

650 kHz (ADP1614-650-EVALZ) or 1.3 MHz (ADP1614-1.3-

EVALZ). The evaluation boards can be adjusted for different

output voltages by changing the feedback resistors, R1 and R2.

To ensure stable operation, external components L1, R

, C

OUT

COMP

, and C

COMP

may also need to be recalculated and adjusted

when the output voltage is changed.

The ADP1614 evaluation board operates in current mode, pulse-

width modulation (PWM) with up to 94% efficiency. The current

mode PWM architecture allows for excellent transient response,

easy noise filtering, and the use of small, cost-saving external

inductors and capacitors. Other key features include a 47 nF

soft start capacitor, undervoltage lockout (UVLO), thermal

shutdown (TSD), and jumper selected enable. The evaluation

board demonstrates the operation and performance of the

ADP1614.

This user guide includes I/O descriptions, setup instructions,

the schematic, and the PCB layout drawings for the ADP1614

step-up converter evaluation board.

Complete specifications for the ADP1614 are available in the

ADP1614 data sheet and should be consulted in conjunction

with this document when using the evaluation board.

TYPICAL APPLICATION CIRCUIT

ADP1614

VIN

CLRES

COMP

OFF

GND

OUT

COMP

10859-001

Figure 1. Step-Up Regulator Configuration

Summary of content (8 pages)

PAGE 1
Evaluation Board User Guide UG-437 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 Evaluating the ADP1614 650 kHz/1.3 MHz, 4 A, Step-Up, PWM, DC-to-DC Switching Converter FEATURES The ADP1614 evaluation board operates in current mode, pulsewidth modulation (PWM) with up to 94% efficiency.
PAGE 2
UG-437 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Evaluation Setup ............................................................................3 General Description ......................................................................... 1 Performance Evaluation ...............................................................3 Typical Application Circuit ........................................
PAGE 3
Evaluation Board User Guide UG-437 EVALUATION BOARD HARDWARE The ADP1614 evaluation board is fully assembled and tested. The following sections describe the various connectors on the board, the proper evaluation setup, and the testing capabilities of the evaluation board. INPUT/OUTPUT CONNECTORS EVALUATION SETUP To ensure proper operation of the ADP1614 evaluation board: 1. 2. 3. EN Test Bus The EN connector is used to enable/disable the converter via the EN pin.
PAGE 4
UG-437 Evaluation Board User Guide EVALUATION BOARD SCHEMATIC AND LAYOUT L1 SW ADP1614 (U1) ADP1614ACPZ-650-R7 ADP1614ACPZ-1.3-R7 D1 VIN 8 VIN 3 EN 9 CLRES VOUT SW 6 SW 7 EN R1 CIN2 (C5) CIN1 (C4) RCL (R4) COUT1 (C7) FB 2 COMP 1 10 SS CSS (C1) GND GND EP 4 5 11 COUT2 (C8) COUT9 (C9) R2 RCOMP (R3) CCOMP1 (C3) CCOMP2 (C2) GND 10859-005 CIN3 (C6) Figure 5.
PAGE 5
Evaluation Board User Guide UG-437 ORDERING INFORMATION BILL OF MATERIALS Table 1. ADP1614-650-EVALZ (fSW = 650 kHz, VOUT = 5 V) Qty 1 1 1 1 1 1 1 2 1 1 1 1 1 1 4 1 2 Reference Designator U1 L1 D1 C1 C2 C3 C4 C5, C6 C7, C8 C9 R1 R2 R3 R4 EN SW VIN, VOUT, GNDx2 Description ADP1614 step-up converter with fSW = 650 kHz Inductor, 4.7 µH, 4.
PAGE 6
UG-437 Evaluation Board User Guide Table 2. ADP1614-1.3-EVALZ (fSW = 1.3 MHz, VOUT = 15 V) Qty 1 1 1 1 1 1 1 2 1 1 1 1 1 1 4 1 2 Reference Designator U1 L1 D1 C1 C2 C3 C4 C5, C6 C7, C8 C9 R1 R2 R3 R4 EN SW VIN, VOUT, GNDx2 Description ADP1614 step-up converter with fSW = 1.
PAGE 7
Evaluation Board User Guide UG-437 NOTES Rev.
PAGE 8
UG-437 Evaluation Board User Guide NOTES ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.