Analog Devices ADP1612 Evaluation Board ADP1612-BL3-EVZ ADP1612-BL3-EVZ 数据表
产品代码
ADP1612-BL3-EVZ
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.
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.
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).
(see Figure 2).
0
85
27
-0
03
PLACE
JUMPER
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).
(see Figure 3).
0
85
27
-0
04
PLACE
JUMPER
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).
the EN pin voltage (see Figure 4).
08
52
7-
00
5
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.
Several methods are available as follows.
• Shunt the top pads of FREQ (R4) for 1.3 MHz operation
085
27
-0
06
PLACE
SHUNT
HERE
SHUNT
HERE
Figure 5. 1.3 MHz Operation Shunt Position
• Shunt the bottom pads of FREQ (R4) for 650 kHz
operation (see Figure 6).
085
27
-0
07
PLACE
SHUNT
HERE
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.
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.
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.
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.
behavior and switching frequency.
EVALUATION SETUP
Follow these setup instructions to ensure proper operation of
the ADP1612/ADP1613 evaluation module:
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.
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
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.
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.