Datasheet

Evaluation Board User Guide UG-205
Rev. A | Page 5 of 12
EVALUATION BOARD OPERATING INSTRUCTION
1. Connect Jumper J3 (EN) to the high position to enable
Channel 1 and Channel 2 of the ADP1850. Jumper J3 is
connected to both EN1 and EN2.
2. Connect Jumper J4 (FREQ) to the low position for 300 kHz
operation.
3. Connect Jumper J1 (SYNC) to the high position for PWM
operation.
4. Connect the positive terminal of the input power supply to
the input terminal, T1. The input range is 10 V to 15 V.
Table 1. Jumper Description
Jumper Description
Default Factory
Setting Function
J1 SYNC High
Connect high for PWM. For synchronization to an external clock, run the external clock
source to this pin.
J3 EN High
Connect high to enable Channel 1 and Channel 2 of the ADP1850 or low to disable both
channels.
J4 FREQ Low
Connect low for 300 kHz or high for 600 kHz operation. This 50 A evaluation board is configured
for operation at 300 kHz. Connect J4 low.
Table 2. Performance Summary (T
A
= 25°C)
Parameter Condition
V
IN
10 V to 15 V
f
SW
Switching frequency, 300 kHz
V
OUT
1.09 V
I
OUT
0 A to 50 A
V
OUT
Ripple, DC Load 16 mV at 50 A load
V
OUT
Deviation upon Step Load Release 3.3% with a 20 A step load