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ADP1612-BL3-EVZ

P1-P3P4-P6P7-P8
EVAL-ADP1612/ADP1613
Rev. A | Page 4 of 8
PERFORMANCE EVALUATION
The following sections discuss tests and the resulting oscil-
loscope waveforms. Oscilloscope waveforms and typical
performance characteristics are provided in the ADP1612/
ADP1613 data sheet.
Line Regulation
The line regulation is observed and measured by monitoring
the output voltage (VOUT) while varying the input voltage (VIN).
Load Regulation
The load regulation is observed and measured by monitoring
the output voltage (VOUT) while sweeping the applied load
between VOUT and GND. To minimize voltage drop, use short
low resistance wires, especially for heavy loads.
Efficiency
The efficiency, η, is measured by comparing the input power to
the output power
ININ
OUTOUT
IV
I
V
×
×
=η
Line Transient
The line transient performance is evaluated by generating a
high speed voltage transient on the input (VIN) and observing
the behavior of the evaluation module at the inductor (SW) and
the output (VOUT.)
Load Transient
The load transient performance is evaluated by generating a fast
current transient on the output (VOUT) and observing the
behavior of the evaluation module at the inductor (SW) and the
output (VOUT.)
Oscillator Frequency
The oscillator frequency can be measured by connecting an
oscilloscope to the SW pin.
Inductor Current
The inductor current is made accessible by removing one side
of the inductor from its pad and connecting a current loop in
series. Place an oscilloscope current probe on the loop to view
the current waveform.
EVAL-ADP1612/ADP1613
Rev. A | Page 5 of 8
EVALUATION BOARD SCHEMATIC AND LAYOUT
ADP1612/
ADP1613
U1
6
3
7
8
5
2
1
4
VIN
EN
FREQ
SS
SW
FB
COMP
GND
L1 SW
C1
C4
C5 C6
C7
FREQ
R4
V
IN
C8 C9
C3
C2
R3
R1
R2
D1
08527-008
V
OUT
GND
EN
Figure 7. ADP1612/ADP1613Boost Application Evaluation Board Schematic
08527-009
Figure 8. ADP1612/ADP1613 Boost Application PCB Top Layer
08527-010
Figure 9. ADP1612/ADP1613 Boost Application PCB Bottom Layer
LAYOUT GUIDELINES
For high efficiency, good regulation, and stability, a well-
designed printed circuit board (PCB) layout is essential.
Use the following guidelines when designing PCBs:
• Keep the low ESR input capacitor, C
IN
(labeled as C7 in
Figure 8), close to VIN and GND. This minimizes noise
injected into the part from board parasitic inductance.
• Keep the high current path from C
IN
(labeled as C7 in
Figure 8) through the L1 inductor to SW and GND as
short as possible.
• Keep the high current path from VIN through L1, the
rectifier (D1), and the output capacitor, C
OUT
(labeled as
C4 in Figure 8), as short as possible.
• Keep high current traces as short and as wide as possible.
• Place the feedback resistors as close to FB as possible to
prevent noise pickup. Connect the ground of the feedback
network directly to an AGND plane to make a Kelvin
connection to the GND pin.
• Place the compensation components as close as possible to
COMP. Connect the ground of the compensation network
directly to an AGND plane that makes a Kelvin connection
to the GND pin.
• Connect the soft start capacitor, C
SS
(labeled as C1 in
Figure 8), as close to the device as possible. Connect the
ground of the soft start capacitor to an AGND plane that
makes a Kelvin connection to the GND pin.
• Avoid routing high impedance traces from the compensa-
tion and feedback resistors near any node connected to SW
or near the inductor to prevent radiated noise injection.
EVAL-ADP1612/ADP1613
Rev. A | Page 6 of 8
ORDERING INFORMATION
BILL OF MATERIALS
Table 1. ADP1612 (V
OUT
= 5 V)
Qty
Reference
Designator
Description Manufacturer
1
Part Number
1 U1 ADP1612 step-up converter Analog Devices, Inc. ADP1612
1 L1 Inductor, 4.7 H Coilcraft DO3316P-472ML
1 D1 Diode ON Semiconductor MBRS2040LT3
1 C1 Soft start capacitor, MLCC, 33 nF, 50 V, 0805, ±10% Panasonic–ECG ECJ-2VB1H333K
C2 Compensation capacitor Open
1 C3 Compensation capacitor, 1200 pF, 50 V, 0805, ±10% Panasonic–ECG ECJ-2VB1H122K
1 C4
Output capacitor, 10 µF, 25 V, 1206, ±10%
Taiyo Yuden TMK316BJ106KL-T
C5 Output capacitor Open
C6 Output capacitor Open
1 C7
Input capacitor, 10 µF, 16 V, 0805, ±10%
Taiyo Yuden EMK212BJ106KG-T
C8 Input capacitor Open
C9 Input capacitor Open
1 R1
Output voltage divider, 30.0 kΩ, 0805, ±1%
Yageo RC0805FR-0730KL
1 R2 Output voltage divider, 10.0 kΩ, 0805, ±1% Vishay/Dale CRCW080510K0FKEA
1 R3 Compensation resistor, 12 kΩ, 0805, ±5% Yageo RC0805JR-0712KL
1 FREQ/R4 Frequency select shunt resistor, 0 Ω, 0805, 1.3 MHz (top 2 pads) Yageo RC0805JR-070RL
10
EN, VIN, SW,
VOUT, GND
Header (0.10”, single/double row, straight) Sullins Electronics PBC36SAAN
1
Equivalent substitutions may be made for all resistors and capacitors.
Table 2. ADP1613 (V
OUT
= 12 V)
Qty
Reference
Designator
Description Manufacturer
1
Part Number
1 U1 ADP1613 step-up converter Analog Devices, Inc. ADP1613
1 L1 Inductor, 6.8 H Coilcraft DO3316P-682ML
1 D1 Diode ON Semiconductor MBRA340T3G
1 C1 Soft start capacitor, 33 nF, 50 V, 0805, ±10% Panasonic–ECG ECJ-2VB1H333K
C2 Compensation capacitor Open
1 C3 Compensation capacitor, 1000 pF, 50 V, 0805, ±10% Panasonic–ECG ECJ-2VB1H102K
1 C4 Output capacitor, 10 µF, 25 V, 1206, ±10% Taiyo Yuden TMK316BJ106KL-T
C5 Output capacitor Open
C6 Output capacitor Open
1 C7 Input capacitor, 10 µF, 16 V, 0805, ±10% Taiyo Yuden EMK212BJ106KG-T
C8 Input capacitor Open
C9 Input capacitor Open
1 R1 Output voltage divider, 86.6 kΩ, 0805, ±1% Yageo RC0805FR-0786K6L
1 R2 Output voltage divider, 10.0 kΩ, 0805, ±1% Vishay/Dale CRCW080510K0FKEA
1 R3 Compensation resistor, 10 kΩ, 0805, ±5% Yageo RC0805JR-0710KL
1 FREQ/R4 Frequency select shunt resistor, 0 Ω, 0805, 1.3 MHz (top 2 pads) Yageo RC0805JR-070RL
10
EN, VIN, SW,
VOUT, GND
Header (0.10”, single/double row, straight) Sullins Electronics PBC36SAAN
1
Equivalent substitutions may be made for all resistors and capacitors.
P1-P3P4-P6P7-P8

ADP1612-BL3-EVZ

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Power Management IC Development Tools Blank SEPIC-CUK demo board
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