ADP2114 Analog Devices, ADP2114 Datasheet - Page 19

• Manufacturer Part Number: ADP2114
• Description: Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
• Manufacturer: Analog Devices

BODE PLOTS
Figure 63. V
Figure 64. V
IN
IN
= 5 V, V
= 5 V, V
OUT
OUT
= 1.2 V, Load = 2 A, f
= 3.3 V, Load = 2 A, f
FREQUENCY
MAGNITUDE
PHASE
FREQUENCY
MAGNITUDE
PHASE
–10
–20
–30
–40
–50
–10
–20
–30
–40
–50
50
40
30
20
10
50
40
30
20
10
0
0
1k
1k
SW
SW
= 1.2 MHz, Crossover Frequency (f
= 600 kHz, Crossover Frequency (f
M1
54.86kHz
0.042dB
50.099°
M1
96.71kHz
–0.075dB
53.305°
MAGNITUDE
10k
M2
210.34kHz
–19.632dB
–0.412°
M2
335.27kHz
–17.371dB
–0.389°
Rev. 0 | Page 19 of 40
10k
MAGNITUDE
FREQUENCY (Hz)
FREQUENCY (Hz)
M2 – M1
155.48kHz
–19.673dB
–50.511°
M1
M2 – M1
238.56kHz
–17.296dB
–53.694°
M1
100k
CO
CO
) = 55 kHz; Phase Margin 50° (See Table 12 for the Circuit Details)
) = 97 kHz; Phase Margin 53° (See Table 12 for the Circuit Details)
100k
PHASE
PHASE
M2
M2
1M
150
120
90
60
30
0
–30
–60
–90
–120
–150
120
96
72
48
24
0
–24
–48
–72
–96
–120
ADP2114