ER3110DI Datasheet, PDF (11/23 Pages) Altera Corporation – Synchronous Buck Regulator

Page 11
Measurements F_SW = 500kHz, V_PVIN = 24V, V_OUT = 3.3V, T_A = +25°C (Continued)
SW 20V/DIV
SW 20V/DIV
V_OUT 20mV/DIV
I_L 20mA/DIV
10ms/DIV
FIGURE 29. STEADY STATE AT NO LOAD, PFM
V_OUT 20mV/DIV
I_L 20mA/DIV
1µs/DIV
FIGURE 30. STEADY STATE AT NO LOAD, PWM
SW 20V/DIV
V_OUT 20mV/DIV
I_L 1A/DIV
1µs/DIV
FIGURE 31. STEADY STATE AT 1A, PWM
SW 20V/DIV
V_OUT 50mV/DIV
I_L 200mA/DIV
10µs/DIV
FIGURE 32. LIGHT LOAD OPERATION AT 20mA, PFM
SW 20V/DIV
V_OUT 10mV/DIV
I_L 200mA/DIV
1µs/DIV
FIGURE 33. LIGHT LOAD OPERATION AT 20mA, PWM
V_OUT 100mV/DIV
I_L 1A/DIV
200µs/DIV
FIGURE 34. LOAD TRANSIENT, PFM
May 2014 Altera Corporation
10038
Enpirion Power Datasheet ER3110DI Wide PVIN 1A Synchronous Buck Regulator
May 28, 2014
Rev A