Datasheet

Typical Characteristics
Load Transient
Load Transient vs. External Capacitance, V
O
= 1.0 V Load Transient vs. External Capacitance, V
O
= 3.3 V
Load transient peak voltage deviation vs. external capacitance.
Step (12.5-37.5-12.5 A). Parallel coupling of capacitors with 470 μF/10 m,
T
P1
= +25 °C, V
I
= 12 V, V
O
= 1.0 V, f
sw
= 320 kHz, di/dt = 2 A/μs
Load transient vs. Switch Frequency
Load transient peak voltage deviation vs. external capacitance.
Step (12.5-37.5-12.5 A). Parallel coupling of capacitors with 470 μF/10 m,
T
P1
= +25 °C, V
I
= 12 V, V
O
= 3.3 V, f
sw
= 320 kHz, di/dt = 2 A/μs
Output Load Transient Response, Default Configuration
Load transient peak voltage deviation vs. frequency.
Step-change (12.5-37.5-12.5 A).
T
P1
= +25 °C. V
I
= 12 V, V
O
= 1.0 V, C
O
= 470 μF/10 m
Output voltage response to load current
Step-change (12.5-37.5-12.5 A) at:
T
P1
= +25 °C, V
I
= 12 V, V
O
= 1.0 V
di/dt = 2 A/μs, f
sw
= 320 kHz
C
O
= 470 μF/10 m
Top trace: output voltage (200
mV/div.).
Bottom trace: load current (10
A/div.).
Time scale: (0.1 ms/div.).
0
100
200
300
400
500
213405
[mV]
[mF]
No NLR
DLC,
Universal PID,
No NLR
Universal PID,
Note 1: For Universal PID, see section Dynamic Loop Compensation (DLC).
Note 2: In the load transient graphs, the worst-case scenario (load step 37.5-12.5 A) has been
considered.
DLC,
Default NLR
Default NLR
Opt. NLR
DLC,
Universal PID,
Opt. NLR
0
100
200
300
400
500
501234
[mV]
[mF]
No NLR
Universal PID,
DLC,
No NLR
Universal PID,
Default NLR
DLC,
Default NLR
Opt. NLR
Universal PID,
DLC,
Opt. NLR
0
100
200
300
400
500
600
200 300 400 500 600
[mV]
[kHz]
No NLR
Universal PID,
DLC,
No NLR
Universal PID,
Default NLR
DLC,
Default NLR
Opt. NLR
DLC,
Universal PID,
Opt. NLR
OKDx-T/50-W12-C
50A Digital PoL DC-DC Converter Series
MDC_OKDx-T/50-W12-C.A04 Page 7 of 41
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