Datasheet

Evaluation Board User Guide UG-204
Rev. A | Page 5 of 12
EVALUATION BOARD OPERATING INSTRUCTION
1. Connect Jumper J3 (EN1) to the high position to enable
Channel 1 of the ADP1850.
2. Connect Jumper J2 (EN2) to the high position to enable
Channel 2 of the ADP1850.
3. Connect Jumper J4 (FREQ) to the high position for
600 kHz operation.
4. Connect Jumper J1 (SYNC) to the high position for PWM
operation or to low for PSM operation.
5. Connect the positive terminal of the input power supply to
the input terminal, T1. The input range is 10 V to 20 V.
Table 1. Jumper Description
Jumper Description
Default Factory
Setting Function
J1 SYNC High
Connect high for PWM or low for PSM operation. For synchronization, run an external clock
source to this pin.
J2 EN2 High Connect high to enable Channel 2 of the ADP1850 or low to disable the channel.
J3 EN1 High Connect high to enable Channel 1 of the ADP1850 or low to disable the channel.
J4 FREQ High
Connect low for 300 kHz or high for 600 kHz operation. This 14 A evaluation board is configured for
operation at 600 kHz. Connect J4 high.
Table 2. Performance Summary (T
A
= 25°C)
Parameter Condition
V
IN
10 V to 20 V
f
SW
Switching frequency, 600 kHz
V
OUT1
3.3 V
I
OUT1
0 A to 14 A
V
OUT1
Ripple, DC Load 18 mV at 14 A load
V
OUT1
Deviation upon Step Load Release 1.5% with a 7 A step load
V
OUT2
1.8 V
I
OUT2
0 A to 14 A
V
OUT2
Ripple, DC Load 18 mV at 14 A load
V
OUT2
Deviation upon Step Load Release 1.8% with a 7 A step load