ISL6313 Datasheet, PDF (7/33 Pages) Intersil Corporation – Two-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR11 and AMD Applications

ISL6313
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
System Accuracy (0.375V to 0.600V)
-2.0
-
2.0
%
DAC Input Low Voltage (INTEL)
-
-
0.4
V
DAC Input High Voltage (INTEL)
0.8
-
-
V
DAC Input Low Voltage (AMD)
-
-
0.8
V
DAC Input High Voltage (AMD)
1.4
-
-
V
PIN-ADJUSTABLE OFFSET
OFS Sink Current Accuracy (Negative R_OFS = 32.4kΩ from OFS to VCC
Offset)
47.0
50.0
53.0
µA
OFS Source Current Accuracy
(Positive Offset)
R_OFS = 6.04kΩ from OFS to GND
47.0
50.0
53.0
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)
-
20
Load = 1mA
3.90
4.20
-
V/µs
-
V
Minimum Output Voltage
Load = -1mA
-
1.30
1.52
V
SOFT-START RAMP
Soft-Start Ramp Rate
R_S = 100kΩ
Adjustment Range of Soft-Start Ramp
Rate (Note 3)
-
1.26
-
mV/µs
0.156
-
6.25
mV/µs
CURRENT SENSING
IOUT Current Sense Offset
R_SET = 40.2kΩ, V_ISEN1+ = V_ISEN2+ =
-2.5
0
2.5
µA
0V
IOUT Current Sense Gain
R_SET = 40.2kΩ, V_ISEN1 = V_ISEN2 =
76
(ISL6313CRZ)
24mV
80
84
µA
IOUT Current Sense Gain
R_SET = 40.2kΩ, V_ISEN1 = V_ISEN2 =
73
(ISL6313IRZ)
24mV
80
84
µA
OVERCURRENT PROTECTION
Overcurrent Trip Level - Average
Channel
Normal operation (ISL6313CRZ)
Normal operation (ISL6313IRZ)
88
100
112
µA
82
100
118
µA
Dynamic VID change
114
140
166
µA
Overcurrent Trip Level - Individual
Channel
Normal operation
Dynamic VID change
114
140
166
µA
166
196
226
µA
IOUT Pin Overcurrent Trip Level
1.97
2.02
2.07
V
PROTECTION
Undervoltage Threshold
VSEN falling
VDAC - 325mV VDAC - 350mV VDAC - 375mV V
Undervoltage Hysteresis
VSEN rising
85
100
125
mV
Overvoltage Threshold During Soft-
Start
VR11 and AMD
1.220
1.260
1.300
V
Overvoltage Threshold
VR11, VSEN rising
VDAC + 150mV
VDAC +
175mV
VDAC + 200mV V
AMD, VSEN rising
VDAC + 200mV
VDAC +
225mV
VDAC + 250mV V
7
FN6448.0
March 5, 2007