ISL6561 Datasheet, PDF (9/26 Pages) Intersil Corporation – Multi-Phase PWM Controller with Precision Rds(on) or DCR Differential Current Sensing for VR10.X Application

ISL6561
Electrical Specifications Operating Conditions: VCC = 5V or ICC < 25mA (Note 3). Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
PIN-ADJUSTABLE OFFSET
Voltage at OFS pin
OSCILLATOR
Accuracy
Adjustment Range
Offset resistor connected to ground
VCC = 5.00V, offset resistor connected to VCC
R_T = 100 kΩ
485 500 515 mV
2.91 3.00 3.09 V
-10
-
0.08 -
10
%
1.5 MHz
Sawtooth Amplitude
-
1.5
-
V
Max Duty Cycle
- 66.7 -
%
ERROR AMPLIFIER
Open-Loop Gain
Open-Loop Bandwidth
Slew Rate
Maximum Output Voltage
Output High Voltage @ 2mA
Output Low Voltage @ 2mA
REMOTE-SENSE AMPLIFIER
Bandwidth
Output High Current
Output High Current
R_L = 10kΩ to ground
C_L = 100pF, R_L = 10kΩ to ground
C_L = 100pF
VSEN - RGND = 2.5V
VSEN - RGND = 0.6
-
80
-
dB
-
18
-
MHz
4.4 6.0 7.5 V/µs
4.0 4.3
-
V
3.7
-
-
V
-
- 1.40 V
-
20
-
MHz
-500 - 500 µA
-500 -
500 µA
PWM OUTPUT
PWM Output Voltage LOW Threshold
PWM Output Voltage HIGH Threshold
Iload = ±500µA
Iload = ±500µA
-
-
0.3
V
4.3
-
-
V
TEMPERATURE COMPENSATION
Temperature Compensation Current @
40°C and Tcomp = 0.5V
Temperature Compensation
Transconductance
10 15 20
µA
-
1
- 1µA/V/
°C
SENSE CURRENT
Sensed Current Tolerance (0°C to 85°C)
Sensed Current Tolerance (-40°C)
Overcurrent Trip Level (0°C to 85°C)
Overcurrent Trip Level (-40°C)
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA
74 81 91
µA
74 81 92
µA
98 110 122 µA
98 110 127 µA
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
Under-Voltage Offset From VID (0°C to
85°C)
Under-Voltage Offset From VID (-40°C)
I_PGOOD = 4mA
VSEN Falling
VSEN Falling
-
-
0.4
V
72 74 76 %VID
71 74 82 %VID
Overvoltage Threshold
Voltage above VID, After Soft Start (Note 5)
180 200 220 mV
Before Enable
1.63
V
Overvoltage Reset Voltage
VCC < POR Threshold
VCC ≥ POR Threshold, VSEN Falling
1.67 1.80 1.87 V
-
0.6
-
V
VCC < POR Threshold
-
1.5
-
V
OVP Drive Voltage
Minimum VCC for OVP
I_OVP = -100mA, VCC = 5V
-
1.9
-
V
1.4
-
-
V
NOTES:
3. When using the internal shunt regulator, VCC is clamped to 6.02V (max). Current must be limited to 25mA or less.
4. These parts are designed and adjusted for accuracy with all errors in the voltage loop included.
5. During soft start, VDAC rises from 0 to VID. The overvoltage trip level is the higher of 1.7V and VDAC + 0.2V.
9
FN9098.5
May 12, 2005