ER3105DI Datasheet, PDF (13/25 Pages) Altera Corporation – 500mA Wide VIN Synchronous Buck Regulator

Typical Performance Curves
V_IN = 24V, V_OUT = 3.3V, F_SW = 800kHz, T_A = +25°C. (Continued)
Page 13
SW 5V/DIV
50ns/DIV
FIGURE 40. JITTER AT NO LOAD, PWM
SW 5V/DIV
50ns/DIV
FIGURE 41. JITTER AT 500mA, PWM
SW 20V/DIV
V_OUT 10mV/DIV
I_L 200mA/DIV
5ms/DIV
FIGURE 42. STEADY STATE AT NO LOAD, PFM
I_L 100mA/DIV
SW 20V/DIV
V_OUT 10mV/DIV
500ns/DIV
FIGURE 43. STEADY STATE AT NO LOAD, PWM
SW 20V/DIV
V_OUT 10mV/DIV
I_L 500mA/DIV
1µs/DIV
FIGURE 44. STEADY STATE AT 500mA LOAD, PWM
SW 20V/DIV
V_OUT 50mV/DIV
I_L 200mA/DIV
10µs/DIV
FIGURE 45. LIGHT LOAD OPERATION AT 20mA, PFM
March 2014 Altera Corporation
09616
ER3105DI 500mA Wide VIN Synchronous Buck Regulator
March 14, 2014
Rev A