ZSPM1025A
True Digital PWM Controller (Single-Phase, Single-Rail)
5.2.1.
Typical Load Transient Response – Capacitor Range #1 – VOUT Range #1
Test conditions: VIN = 12.0V, VOUT = 1.20V
Minimum output capacitance: 2 x 100µF/6.3V X5R
Maximum output capacitance: 3 x 100µF/6.3V X5R + 2 x 47µF/10V X7R
Figure 5.2
5 to 15A Load Step – Min. Capacitance
Figure 5.3
15 to 5A Load Step – Min. Capacitance
Ch1 (Blue): VOUT 100mV/div AC
Ch2 (Cyan): PWM 5V/div DC
Ch3: (Violet): Load Trigger 5V/div DC
Time Scale: 8µs/div
Ch1 (Blue): VOUT 100mV/div AC
Ch2 (Cyan): PWM 5V/div DC
Ch3: (Violet): Load Trigger 5V/div DC
Time Scale: 8µs/div
Figure 5.4
5 to 15A Load Step – Max. Capacitance
Figure 5.5
15 to 5A Load Step – Max. Capacitance
Ch1 (Blue): VOUT 100mV/div AC
Ch2 (Cyan): PWM 5V/div DC
Ch3: (Violet): Load Trigger 5V/div DC
Time Scale: 8µs/div
Ch1 (Blue): VOUT 100mV/div AC
Ch2 (Cyan): PWM 5V/div DC
Ch3: (Violet): Load Trigger 5V/div DC
Time Scale: 8µs/div
Figure 5.6
Open Loop Bode Plots
40
0
Max Caps - Gain
Min Caps - Gain
Max Caps - Phase
Min Caps - Phase
30
20
-30
-60
-90
-120
-150
-180
10
0
-10
-20
-30
-40
1
10
Frequency [kHz]
100
© 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00
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prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
Data Sheet
October 24, 2013
36 of 46
ETC [ ETC ]
