isl6312a Intersil Corporation, isl6312a Datasheet - Page 7

• Manufacturer Part Number: isl6312a
• Description: Four-phase Buck Pwm Controller With Integrated Mosfet Drivers For Intel Vr10, Vr11, And Amd Applications
• Manufacturer: Intersil Corporation

Electrical Specifications
DAC Input Low Voltage (AMD)
DAC Input High Voltage (AMD)
PIN-ADJUSTABLE OFFSET
OFS Sink Current Accuracy (Negative Offset)
OFS Source Current Accuracy (Positive Offset)
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
Maximum Output Voltage
Minimum Output Voltage
SOFT-START RAMP
Soft-Start Ramp Rate
Adjustment Range of Soft-Start Ramp Rate (Note 3)
PWM OUTPUT
PWM Output Voltage LOW Threshold
PWM Output Voltage HIGH Threshold
CURRENT SENSING
Current Sense Resistance, R
Sensed Current Tolerance
OVERCURRENT PROTECTION
Overcurrent Trip Level - Average Channel
Overcurrent Trip Level - Individual Channel
PROTECTION
Undervoltage Threshold
Undervoltage Hysteresis
Overvoltage Threshold During Soft-Start
Overvoltage Threshold (Default)
Overvoltage Threshold (Alternate)
Overvoltage Hysteresis
SWITCHING TIME (Note 3)
UGATE Rise Time
LGATE Rise Time
PARAMETER
ISEN
7
Recommended Operating Conditions, Unless Otherwise Specified. (Continued)
R
R
R
C
C
Load = 1mA
Load = -1mA
VR10/VR11, R
AMD
Iload = ±500μA
Iload = ±500μA
T = +25°C
ISEN1+ = ISEN2+ = ISEN3+ = ISEN4+ = 80μA
Normal operation
Dynamic VID change
Normal operation
Dynamic VID change (Note 3)
VSEN falling
VSEN rising
VR10/VR11
AMD
VR10/VR11, OVPSEL tied to ground, VSEN rising
AMD, OVPSEL tied to ground, VSEN rising
OVPSEL tied to +5V, VSEN rising
VSEN falling
t
t
RUGATE;
RLGATE;
OFS
OFS
L
L
L
= 10k to ground, (Note 3)
= 100pF, R
= 100pF, load = ±400µA, (Note 3)
= 10kΩ from OFS to GND
= 30kΩ from OFS to VCC
V
V
PVCC
PVCC
ISL6312A
ISL6312A
L
S
TEST CONDITIONS
= 10k to ground, (Note 3)
= 100kΩ
= 12V, 3nF load, 10% to 90%
= 12V, 3nF load, 10% to 90%
VDAC +
VDAC +
VDAC +
150mV
225mV
325mV
0.625
209.4
37.0
50.5
3.90
1.24
2.13
MIN
297
143
150
110
1.0
4.5
76
55
-
-
-
-
-
-
-
-
-
-
-
-
VDAC +
VDAC +
VDAC +
175mV
250mV
350mV
1.563
2.063
TYP
40.0
53.5
4.20
1.30
1.28
2.20
125
100
300
163
177
238
96
20
80
60
10
26
18
8
-
-
-
-
-
VDAC +
VDAC +
VDAC +
200mV
275mV
375mV
266.6
MAX
43.0
56.5
6.25
1.32
2.27
303
140
183
204
0.6
1.5
0.5
84
65
-
-
-
-
-
-
-
-
-
-
-
-
August 1, 2007
FN9290.3
UNITS
mV/µs
mV/µs
mV/µs
%VID
%VID
MHz
V/μs
mV
μA
μA
dB
μA
μA
μA
μA
μA
ns
ns
Ω
V
V
V
V
V
V
V
V
V
V
V