ISL78227 Datasheet, PDF (20/43 Pages) Intersil Corporation – 2-Phase Boost Controller with Integrated Drivers

ISL78227
Performance Curves Unless otherwise specified, operating conditions for the oscilloscope waveforms are V_IN = 12V,
V_OUT = 36V and T_A = +25°C. (Continued)
TRACK 4.0V/DIV
V_OUT 2.0V/DIV WITH 36V OFFSET
V_OUT 1.0V/DIV WITH 28V OFFSET
PH2 40.0V/DIV
PH1 40.0V/DIV
10µs/DIV
FIGURE 29. DIGITAL TRACKING, (TRACKING SIGNAL,
FREQUENCY = 200kHz, D = 0.5), V_OUT = 28.3V
I_LOAD 5.0A/DIV
PH2 30.0V/DIV
PH1 30.0V/DIV
10ms/DIV
FIGURE 30. DE MODE (DE/PHDRP = VCC), TRANSIENT RESPONSE,
I_OUT = 0.03A TO 8A STEP LOAD
V_OUT 1.0V/DIV WITH 36V OFFSET
V_OUT 1.0V/DIV WITH 36V OFFSET
I_LOAD 5.0A/DIV
I_LOAD 5.0A/DIV
PH2 30.0V/DIV
PH1 30.0V/DIV
1ms/DIV
FIGURE 31. CCM MODE (DE/PHDRP = GND), TRANSIENT RESPONSE,
I_OUT = 0A TO 8A STEP LOAD
0.5
0.4
0.3
0.2
0.1
0.0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 33. SHUTDOWN CURRENT AT THE VIN PIN I_SD vs
TEMPERATURE, V_IN = 55V
PH2 30.0V/DIV
PH1 30.0V/DIV
5ms/DIV
FIGURE 32. DE+PH_DROP MODE (DE/PHDRP = FLOAT), TRANSIENT
RESPONSE, I_OUT = 1A TO 8A STEP LOAD
10
9
8
7
6
5
4
3
2
1
0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 34. IC OPERATIONAL QUIESCENT CURRENT vs
TEMPERATURE, IC SWITCHING, NO LOAD ON LGX AND
UGX
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FN8808.2
February 24, 2016