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ADP1612-BL3-EVZ

P1-P3P4-P6P7-P8
650 kHz/1.3 MHz Step-Up Converter
Evaluation Board Documentation
EVAL-ADP1612/ADP1613
Rev. A
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. 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 of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2009–2010 Analog Devices, Inc. All rights reserved.
FEATURES
Input voltage range
1.8 V to 5.5 V for the ADP1612-5-EVALZ
2.5 V to 5.5 V for the ADP1613-12-EVALZ
Output voltage
5 V for ADP1612-5-EVALZ
12 V for ADP1613-12-EVALZ
Shunt-selectable 1.3 MHz or 650 kHz switching frequency
Jumper for enable/shutdown control
Components optimized for the indicated output voltages
GENERAL DESCRIPTION
The ADP1612/ADP1613 evaluation module 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 (ADP1612) and 12 V (ADP1613) output
voltages. The evaluation boards can be adjusted for different
output voltages by changing R1 and R2. In addition, L1, D1, C3,
and R3 may need to be adjusted and should be recalculated to
ensure stable operation.
The ADP1612/ADP1613 evaluation module operates in
pulse-width modulation (PWM) current mode with up to 94%
efficiency. The shunt-selectable switching frequency and PWM
current-mode architecture allow for excellent transient response,
easy noise filtering, and the use of small, cost-saving external
inductors and capacitors. Other key features include a 33 nF
soft start capacitor, undervoltage lockout (UVLO), thermal
shutdown (TSD), and jumper selected enable. The evaluation
module demonstrates the operation and performance of the
ADP1612/ADP1613.
This data sheet includes I/O descriptions, setup instructions,
the schematic, and the PCB layout drawings for the ADP1612/
ADP1613 step-up converter evaluation module. Use this data
sheet in conjunction with the ADP1612/ADP1613 data sheet
available on www.analog.com.
TYPICAL APPLICATION CIRCUIT
ADP1612/
ADP1613
U1
6
3
7
8
5
2
1
4
VIN
EN
FREQ
SS
SW
FB
COMP
GND
ON
OFF
1.3MHz
650kHz
(DEFAULT)
V
OUT
V
IN
L1
C
IN
C
SS
C
OUT
C
COMP
R
COMP
R1
R2
D1
06772-002
Figure 1. Step-Up Regulator Configuration
EVAL-ADP1612/ADP1613
Rev. A | Page 2 of 8
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Typical Application Circuit ............................................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Input/Output Connectors ........................................................... 3
Evaluation Setup ........................................................................... 3
Performance Evaluation .............................................................. 4
Evaluation Board Schematic and Layout .......................................5
Layout Guidelines..........................................................................5
Ordering Information .......................................................................6
Bill of Materials ..............................................................................6
Ordering Guide .............................................................................7
ESD Caution...................................................................................7
REVISION HISTORY
1/10—Rev. 0 to Rev. A
Changes to Figure 4 to Figure 6 ...................................................... 3
12/09—Revision 0: Initial Version
EVAL-ADP1612/ADP1613
Rev. A | Page 3 of 8
EVALUATION BOARD HARDWARE
The ADP1612/ADP1613 evaluation module is fully assembled
and tested. The following sections describe the various connec-
tors on the board, the proper evaluation setup, and the testing
capabilities of the evaluation module.
INPUT/OUTPUT CONNECTORS
EN Test Bus
The EN connector is used to enable/disable the converter via
the EN pin. Use one of the following methods to enable the
converter. Do not leave the EN pin floating.
• Use a jumper to connect the top two pins of the EN test
bus. This connects EN to VIN and enables the converter
(see Figure 2).
0
8527-003
PLACE
J
UMPER
HERE
Figure 2. Enabled Jumper Position
• Use a jumper to connect the bottom two pins of the EN test
bus. This connects EN to GND and disables the converter
(see Figure 3).
0
8527-004
PLACE
J
UMPER
HERE
Figure 3. Disabled Jumper Position
• Alternatively, connect a voltage between VIN and GND to
the center pin of the EN test bus for independent control of
the EN pin voltage (see Figure 4).
08527-005
CONNECT
EXTERNAL
DEVICE
HERE
Figure 4. EN Pin Direct Connection
0 Ω Shunt FREQ (R4)
This shunt selects the switching frequency via the FREQ pin.
Several methods are available as follows.
• Shunt the top pads of FREQ (R4) for 1.3 MHz operation
(see Figure 5).
08527-006
PLACE
SHUNT
HERE
Figure 5. 1.3 MHz Operation Shunt Position
• Shunt the bottom pads of FREQ (R4) for 650 kHz
operation (see Figure 6).
08527-007
PLACE
SHUNT
HERE
Figure 6. 650 kHz Operation Shunt Position
• If this shunt is left open, the part defaults to 650 kHz.
VOUT Test Bus
The output voltage at the VOUT test bus is set by the resistive
voltage divider network, R1 and R2. A load can be attached to
the VOUT test bus.
VIN Test Bus
The VIN test bus connects the positive input supply voltage to
the VIN pin. Connect the power supply to this bus and keep the
wires as short as possible to minimize the EMI transmission.
GND Test Bus
The GND test bus is the power ground connection for the part
via the GND pin as well as the bypass capacitors. Connect
ground connections from external equipment to this bus.
SW Test Point
The SW test point is for measuring the switch node (SW pin)
behavior and switching frequency.
EVALUATION SETUP
Follow these setup instructions to ensure proper operation of
the ADP1612/ADP1613 evaluation module:
1. Select the passive components for the bypass capacitance,
desired output voltage, compensation, and start-up time,
using the applications information from the ADP1612/
ADP1613 data sheet.
2. Connect the input supply ground to GND.
3. Connect the positive input supply to VIN.
4. Connect the desired load between VOUT and GND. The
maximum continuous output current of the ADP1612/
ADP1613 is dependent upon the input and output
conditions.
5. Apply a voltage between 1.8 V and 5.5 V (ADP1612) or
2.5 V and 5.5 V (ADP1613) to the VIN test bus.
6. Move the jumper on the EN test bus to the enabled position.
P1-P3P4-P6P7-P8

ADP1612-BL3-EVZ

Mfr. #:
Buy ADP1612-BL3-EVZ
Manufacturer:
Analog Devices / Linear Technology
Description:
Power Management IC Development Tools Blank SEPIC-CUK demo board
Lifecycle:
New from this manufacturer.
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