FN8808 datasheet(20/44 Pages) RENESAS

20 / 44 page

ISL78227

FN8808 Rev.6.02

Page 20 of 43

Feb 28, 2025

FIGURE 29. DIGITAL TRACKING, (TRACKING SIGNAL,

FREQUENCY = 200kHz, D_TRACK = 0.5), VOUT = 28.3V

FIGURE 30. DE MODE (DE/PHDRP = VCC), TRANSIENT RESPONSE,

IOUT = 0.03A TO 8A STEP LOAD

FIGURE 31. CCM MODE (DE/PHDRP = GND), TRANSIENT RESPONSE,

IOUT = 0A TO 8A STEP LOAD

FIGURE 32. DE+PH_DROP MODE (DE/PHDRP = FLOAT), TRANSIENT

RESPONSE, IOUT = 1A TO 8A STEP LOAD

FIGURE 33. SHUTDOWN CURRENT AT THE VIN PIN I_SD vs

TEMPERATURE, VIN = 55V

FIGURE 34. IC OPERATIONAL QUIESCENT CURRENT vs

TEMPERATURE, IC SWITCHING, NO LOAD ON LGX AND

UGX

Performance Curves Unlessotherwisespecified,operating conditionsfortheoscilloscopewaveformsareV

IN = 12V,

VOUT = 36V, and TA = +25°C. (Continued)

VOUT 1.0V/DIV WITH 28V OFFSET

TRACK 4.0V/DIV

PH2 40.0V/DIV

PH1 40.0V/DIV

10µs/DIV

PH2 30.0V/DIV

I_LOAD 5.0A/DIV

VOUT 2.0V/DIV WITH 36V OFFSET

PH1 30.0V/DIV

10ms/DIV

PH2 30.0V/DIV

I_LOAD 5.0A/DIV

VOUT 1.0V/DIV WITH 36V OFFSET

PH1 30.0V/DIV

1ms/DIV

PH2 30.0V/DIV

I_LOAD 5.0A/DIV

VOUT 1.0V/DIV WITH 36V OFFSET

PH1 30.0V/DIV

5ms/DIV

0.0

0.1

0.2

0.3

0.4

0.5

-50

-25

255075

100

125

150

TEMPERATURE (°C)

-50

-25

100

125

150

TEMPERATURE (°C)

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