ISL78226 Datasheet, PDF (21/94 Pages) Intersil Corporation – Cycle-by-cycle peak current limiting

ISL78226
Electrical Specifications Refer to the Block Diagram (page 11) and Typical Application Schematics (page 13). Operating conditions
unless otherwise noted: V_VIN = 48V, V_V6 = 6V, V_V12 = 12V, V_BAT12 = 12V, V_PVCC = 5.2V, V_VCC = 5.2V, V_EN = 5.0V, and T_A = -40°C to +125°C. Typicals are
at T_A = +25°C. Boldface limits apply across the operating temperature range, -40°C to +125°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 8) TYP (Note 8) UNIT
Slew Rate
COMP Output Current Capability
COMP Output Voltage High
COMP Output Voltage Low
SLOPE COMPENSATION
SL_EA
I_{O_EA}
V_{CLMP_EA}
V_{OMIN_EA}
C_CMP = 100pF from COMP pin to GND
±3
±300
3.5
3.7
3.9
0.3
V/µs
µA
V
V
SLOPE Pin Bias Voltage
SLOPE Accuracy
V_SLOPE
CURRENT SENSE AMPLIFIER/CURRENT MONITORING
R_{SLP_BK} or R_{SLP_BT} = 20kΩ (0.1%)
R_{SLP_BK} or R_{SLP_BT} = 40.2kΩ (0.1%)
480 500 520
mV
-20
20
%
ISENxA, ISENxB Offset Current
ISET Output Current
ISHARE Output Current
Current Matching between ISET and
ISHARE (within Same Chip)
IMON Output Current (Buck Mode)
I_{OFST_ISENx} Sinking into pin, EN = 5V, R_SETxA = R_SETxB = 1kΩ
56
µA
(0.1%), V_ISENxA = V_ISENxB = 3.15V to V_BAT12
I_ISET
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
V_ISENxA - V_ISENxB =20mV, V_ISENxB = V_BAT12
152
µA
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
172
µA
V_ISENxA - V_ISENxB = 30mV, V_ISENxB = V_BAT12
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
V_ISENxA - V_ISENxB = 0mV, V_ISENxB = V_BAT12
112
µA
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
52
µA
V_ISENxA - V_ISENxB = -30mV, V_ISENxB = V_BAT12
I_ISHARE
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
152
µA
V_ISENxA - V_ISENxB = 20mV, V_ISENxB = V_BAT12
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
172
µA
V_ISENxA - V_ISENxB = 30mV, V_ISENxB = V_BAT12
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
V_ISENxA - V_ISENxB = 0mV, V_ISENxB = V_BAT12
112
µA
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
52
µA
V_ISENxA - V_ISENxB = -30mV, V_ISENxB = V_BAT12
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
-3
V_ISENxA - V_ISENxB = -30mV ~ +30mV,
V_ISENxB = V_BAT12
3
µA
I_{IMON_BK} 6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
251 258 269
µA
V_ISENxA - V_ISENxB = 30mV, V_ISENxB = V_BAT12,
RIMON = 10.56kΩ
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
225 228.5 232
µA
V_ISENxA - V_ISENxB = 20mV, V_ISENxB = V_BAT12,
RIMON = 10.56kΩ, V_IN = 48V, BAT48 = 48V,
BAT12 = 12V, T_A= +25°C
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
221 228.5 238
µA
V_ISENxA - V_ISENxB = 20mV, V_ISENxB = V_BAT12,
RIMON = 10.56kΩ
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
V_ISENxA - V_ISENxB = 0mV, V_ISENxB = V_BAT12,
RIMON = 10.56kΩ
161 168 178
µA
6-phase, R_SETxA = R_SETxB = 1kΩ (0.1%),
70
78
88
µA
V_ISENxA - V_ISENxB = -30mV, V_ISENxB = V_BAT12
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FN8887.0
November 7, 2016