Datasheet

Output Ripple vs. Switching frequency
Output voltage ripple V
pk-pk
at: T
P1
= +25 °C, V
I
= 12 V, C
O
= 470 µF/10 mΩ,
I
O
= 50 A resistive load. Default configuration except changed frequency.
0
10
20
30
40
50
60
200 300 400 500 600
[kHz]
[mV
pk-pk
]
0.6 V
1.0 V
1.8 V
3.3 V
Output Load Transient Response, Default Configuration
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (10 A/div.).
Time scale: (0.1 ms/div.).
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 mΩ
Default configuration (DLC and default NLR)
Output Load Transient Response, DLC and No NLR
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (10 A/div.).
Time scale: (0.1 ms/div.).
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 mΩ
DLC and no NLR
Output Load Transient Response, DLC and Optimized NLR
Top trace: output voltage (200 mV/div.).
Bottom trace: load current (10 A/div.).
Time scale: (0.1 ms/div.).
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 mΩ
DLC and optimized NLR
Load Transient vs. Decoupling Capacitance, V
O
= 1.0 V
Load transient peak voltage deviation vs. decoupling 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
0
100
200
300
400
500
201 435
[mV]
[mF]
No NLR
DLC,
No NLR
Universal PID,
Universal PID,
DLC,
Default NLR
Default NLR
Opt. NLR
DLC,
Universal PID,
Opt. NLR
Load Transient vs. Decoupling Capacitance, V
O
= 3.3 V
Load transient peak voltage deviation vs. decoupling 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
0
100
200
300
400
500
210345
[mV]
[mF]
No NLR
DLC,
No NLR
Universal PID,
Universal PID,
DLC,
Default NLR
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 28 of 41
www.murata-ps.com/support