ISL78227 Datasheet, PDF (23/43 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)
1.265
1.263
1.261
1.259
1.257
1.255
1.253
1.251
1.249
1.247
1.245
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 47. DIGITAL TRACKING REFERENCE SYSTEM ACCURACY vs
TEMPERATURE, MEASURED AT THE FB PIN, DUTY
CYCLE OF TRACK PIN SIGNAL IS 0.5
100
90
80
tDT2
70
60
tDT1
50
40
30
20
10
0
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 48. GATE DRIVE DEAD TIME vs TEMPERATURE, R_DT = 10k,
t_DT1 REFERS TO UG FALLING TO LG RISING, t_DT2
REFERS TO LG FALLING TO UG RISING
150
140
130
120
tDT2
110
100
90
tDT1
80
70
60
50
-50 -25
0
25
50
75 100 125 150
TEMPERATURE (°C)
FIGURE 49. GATE DRIVE DEAD TIME vs TEMPERATURE, R_DT = 18.2k, t_DT1 REFERS TO UG FALLING TO LG RISING, t_DT2 REFERS TO LG FALLING TO
UG RISING
Submit Document Feedback ₂₃
FN8808.2
February 24, 2016