ISL78229 Datasheet, PDF (21/71 Pages) Intersil Corporation – 2-Phase Boost Controller with Drivers

ISL78229
Performance Curves Unless otherwise specified, operating conditions for the oscilloscope waveforms are V_IN = 12V,
V_OUT = 36V and T_A = +25°C. (Continued)
PH1 40.0V/DIV
PH1 30.0V/DIV
PH2 40.0V/DIV
PH2 30.0V/DIV
V_OUT 5.0V/DIV WITH 36V OFFSET
SDA 4.0V/DIV
20ms/DIV
FIGURE 35. PMBus™ COMMAND VOUT_COMMAND CHANGES
VREF_DAC FROM 1V TO 1.6V. VOUT_TRANSITION_RATE
SETS VREF_DAC CHANGING SLEW RATE AT 12.5mV/ms
PH1 40.0V/DIV
PH2 40.0V/DIV
V_OUT 5.0V/DIV
SDA 4.0V/DIV
20ms/DIV
FIGURE 37. PMBus™ COMMAND VOUT_COMMAND CHANGES
VREF_DAC FROM 1.6V TO 1V. VOUT_TRANSITION_RATE
SETS VREF_DAC CHANGING SLEW RATE AT 12.5mV/ms
PH1 30.0V/DIV
PH2 30.0V/DIV
V_OUT 10.0V/DIV
SDA 4.0V/DIV
2ms/DIV
FIGURE 39. PMBus™ COMMAND VOUT_COMMAND CHANGES
VREF_DAC FROM 1V TO 1.6V. VOUT_TRANSITION_RATE
SETS VREF_DAC CHANGING SLEW RATE AT 200mV/ms
V_OUT 10.0V/DIV
SDA 4.0V/DIV
2ms/DIV
FIGURE 36. PMBus™ COMMAND VOUT_COMMAND CHANGES
VREF_DAC FROM 1.6V TO 1V. VOUT_TRANSITION_RATE
SETS VREF_DAC CHANGING SLEW RATE AT 200mV/ms
0.5
0.4
0.3
0.2
0.1
0.0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 38. SHUTDOWN CURRENT AT THE VIN PIN I_SD vs
TEMPERATURE, V_IN = 55V
10
9
8
7
6
5
4
3
2
1
0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 40. IC OPERATIONAL QUIESCENT CURRENT vs
TEMPERATURE, IC SWITCHING, NO LOAD ON LGX AND
UGX
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FN8656.3
February 12, 2016