Analog Devices ADP5014-EVALZ User Manual page 6

UG-1137
EVALZ evaluation board is 0 Ω. To change the configuration,
replace the R1 resistor at the CFG1 pin with a different value.
The CFG2 pin programs the operation mode (forced pulse-
width modulation (FPWM) or pulse-width modulation/power
savings mode (PWM/PSM)), the enable mode (manual mode or
sequence mode), the delay timer (×1 or ×8), GPIO functionalities
(power-good, synchronization input, clock output, and
undervoltage comparator output for all channels. The value of
R2 on the ADP5014-EVALZ evaluation board is 0 Ω. To change
the configuration, replace the R2 resistor at the CFG2 pin with a
different value.
Changing the Delay Time in Sequence Enable Mode
In sequence mode, all channels in the
off under the control of the internal sequencer, which is
triggered by the EN1/ENALL pin, with the predefined delay
timer set by the EN2/DL12 and EN4/DL34 pins.
EN2/DL12 configures the delay timer for Channel 1 and
Channel 2 when R11 is connected to ground. Similarly,
EN4/DL34 configures the delay timer for Channel 3 and
Channel 4 when R20 is connected to ground. In parallel
operation, the slave channel (Channel 2 or Channel 4) always
follow up with the delay timer configuration of the master
channel. The delay timer decoder circuitry only works in the
initiation stage of the ADP5014; therefore, the delay timer
cannot be changed during operation. Table 2 summarizes the
resistors that can be replaced when changing the function
configurations and delay time.
Table 2. Function Configurations and Delay Time Setting
Pin Name Resistor Comments
CFG1 R1 Load output capability and parallel
operation settings.
CFG2 R2 Operation mode, enable mode, delay
time, and GPIO functionality settings.
EN2/DL12 R11 Not connected in manual mode; delay
time setting for Channel 1 and
Channel 2 in sequence mode.
EN4/DL34 R20 Not connected in manual mode; delay
time setting for Channel 3 and
Channel 4 in sequence mode.
ADP5014 turns on and
Rev. 0 | Page 6 of 11
ADP5014-EVALZ
Configuring Channel 1/Channel 2 and Channel 3/
Channel 4 as 2-Phase Parallel Outputs
Channel 1 and Channel 2 are programmed as individual
outputs on the ADP5014-EVALZ evaluation board. Channel 3
and Chanel 4 are configured as individual outputs as well.
To configure Channel 1 and Channel 2 as a combined 2-phase
parallel output, the following steps are required:
1. Short the S1 jumper.
2. Change R1 = 21.5 kΩ in the CFG1 pin setting.
3. Remove R8 and C12 from the COMP2 pin.
4. Remove R9, and replace R10 with 0 Ω on the FB2 pin.
5. Shunt the J-EN2 jumper to GND.
6. Use the VSET1 pin (R22 and R26) and the FB1 pin (R5 and
R6) to set the output voltage.
7. Use the J-EN1 jumper (EN1/ENALL pin) to enable or
disable Channel 1 and Channel 2.
To configure Channel 3 and Channel 4 as a combined 2-phase
parallel output, the following steps are required:
1. Short the S2 jumper.
2. Change R1 = 26.1 kΩ in the CFG1 pin setting.
3. Remove R17 and C24 from the COMP4 pin.
4. Remove R18, and replace R19 with 0 Ω on the FB4 pin.
5. Shunt the J-EN4 jumper to GND.
6. Use the VSET3 pin (R24 and R28) and the FB3 pin (R13
and R14) to set the output voltage.
7. Use the J-EN3 jumper (EN3/UV pin) to enable or disable
Channel 3 and Channel 4.
User Guide