ISL6333_14 Datasheet, PDF (14/40 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with Integrated MOSFET Drivers and Light Load Efficiency Enhancements for Intel VR11.1 Applications

ISL6333, ISL6333A, ISL6333B, ISL6333C
Electrical Specifications Recommended Operating Conditions. Boldface limits apply over the operating temperature range. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 4)
TYP
(Note 4) UNITS
Oscillator Ramp Amplitude, V_P-P
CONTROL THRESHOLDS
(Note 3)
-
1.50
-
V
EN Rising Threshold
0.84
0.86
0.88
V
EN Hysteresis
96
104
120
mV
REFERENCE AND DAC
System Accuracy (1.000V to 1.600V)
-0.5
-
0.5
%
System Accuracy (0.600V to 1.000V)
-1.0
-
1.0
%
System Accuracy (0.400V to 0.600V)
-2.0
-
2.0
%
DAC Input Low Voltage
-
-
0.4
V
DAC Input High Voltage
0.8
-
-
V
PSI# INPUT
PSI# Input Low Voltage Threshold
-
-
0.4
V
PSI# Input High Voltage Threshold
0.8
-
-
V
PIN-ADJUSTABLE OFFSET
OFS Sink Current Accuracy
(Negative Offset)
R_OFS = 32.4kΩ from OFS to VCC
-52.0
-50.3
-48.0
µA
OFS Source Current Accuracy
(Positive Offset)
R_OFS = 6.04kΩ from OFS to GND
47.0
48.7
51.0
µA
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
R_L = 10k to ground, (Note 3)
C_L = 100pF, R_L = 10k to ground,
(Note 3)
-
96
-
dB
-
40
-
MHz
Slew Rate
Maximum Output Voltage
C_L = 100pF, Load = ±400µA, (Note 3)
-
Load = 1mA
4.00
20
4.196
-
V/µs
-
V
Minimum Output Voltage
Load = -1mA
-
1.231
1.60
V
SOFT-START RAMP
Soft-Start Ramp Rate
R_S = 100kΩ
Adjustment Range of Soft-Start Ramp (Note 3)
Rate
1.15
0.156
1.274
-
1.37
mV/µs
6.25
mV/µs
CURRENT SENSING
IDROOP Current Sense Offset
IDROOP Current Sense Gain
OVERCURRENT PROTECTION
R_SET = 40.2kΩ, V_ISEN1+ = V_ISEN2+ = 0V
R_SET = 40.2kΩ, V_ISEN1 = V_ISEN2 = 24mV
-2.5
77.5
0
81.2
2.5
µA
85
µA
Overcurrent Trip Level - Average
Channel
Normal operation
Dynamic VID change
88
100
110
µA
120
140
160
µA
Overcurrent Trip Level - Individual
Channel
Normal operation
Dynamic VID change
120
138
160
µA
170
195
222
µA
IMON Pin Clamped Overcurrent Level
1.1
1.127
1.15
V
OVERVOLTAGE AND UNDERVOLTAGE PROTECTION
Undervoltage Threshold
VSEN falling
0.48*VDAC 0.503*VDAC 0.525*VDAC
V
Undervoltage Hysteresis
VSEN rising
0.02*VDAC 0.084*VDAC 0.15*VDAC
V
14
FN6520.3
October 8, 2010