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ER3105DI Datasheet, PDF (14/25 Pages) Altera Corporation – 500mA Wide VIN Synchronous Buck Regulator
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Page 14
Typical Performance Curves
VIN = 24V, VOUT = 3.3V, FSW = 800kHz, TA = +25°C. (Continued)
SW 20V/DIV
VOUT 10mV/DIV
IL 100mA/DIV
1µs/DIV
FIGURE 46. LIGHT LOAD OPERATION AT 20mA, PWM
VOUT 100mV/DIV
IL 500mA/DIV
200µs/DIV
FIGURE 47. LOAD TRANSIENT, PFM
VOUT 50mV/DIV
IL 500mA/DIV
200µs/DIV
FIGURE 48. LOAD TRANSIENT, PWM
SW 20V/DIV
VOUT 10mV/DIV
IL 1A/DIV
2µs/DIV
FIGURE 49. PFM TO PWM TRANSITION
SW 20V/DIV
VOUT 2V/DIV
IL 500mA/DIV
POK 2V/DIV
20µs/DIV
FIGURE 50. OVERCURRENT PROTECTION, PWM
SW 20V/DIV
VOUT 2V/DIV
IL 1A/DIV
50ms/DIV
POK 2V/DIV
FIGURE 51. OVERCURRENT PROTECTION HICCUP, PWM
ER3105DI 500mA Wide VIN Synchronous Buck Regulator
09616
March 14, 2014
March 2014 Altera Corporation
Rev A
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