ISL6556A Datasheet, PDF (8/24 Pages) Intersil Corporation – Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application

ISL6556A
Electrical Specifications Operating Conditions: VCC = 5V or ICC < 25mA (Note 4), T_J = 0°C to 105°C.
Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
PIN-ADJUSTABLE OFFSET
Voltage at OFS pin
Offset resistor connected to ground
485
VCC=5.00V, offset resistor connected to VCC
2.91
OSCILLATOR
Accuracy
R_T = 100kΩ
-10
Adjustment Range
0.08
Sawtooth Amplitude
-
Max Duty Cycle
-
ERROR AMPLIFIER
Open-Loop Gain
R_L = 10kΩ to ground
-
Open-Loop Bandwidth
C_L = 100pF, R_L = 10kΩ to ground
-
Slew Rate
C_L = 100pF
4.5
Maximum Output Voltage
4.0
Output High Voltage @ 2mA
3.7
Output Low Voltage @ 2mA
-
REMOTE-SENSE AMPLIFIER
Bandwidth
-
Output High Current
VSEN - RGND = 2.5V
-500
Output High Current
VSEN - RGND = 0.6
-500
PWM OUTPUT
PWM Output Voltage LOW Threshold
Iload = ±500µA
-
PWM Output Voltage HIGH Threshold
Iload = ±500µA
4.3
SENSE CURRENT
Sensed Current Tolerance
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA, 0°C to 105°C
74
Overcurrent Trip Level
98
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
I_PGOOD = 4mA
-
Undervoltage Offset From VID
VSEN Falling
72
Overvoltage Threshold
Voltage above VID, After Soft Start (Note 6)
180
Before Enable
-
VCC < POR Threshold
1.7
Overvoltage Reset Voltage
VCC ≥ POR Threshold, VSEN Falling
-
VCC < POR Threshold
-
OVP Drive Voltage
I_OVP = -100mA, VCC = 5V
-
Minimum VCC for OVP
1.4
NOTES:
4. When using the internal shunt regulator, VCC is clamped to 6.02V (max). Current must be limited to 25mA or less.
5. These parts are designed and adjusted for accuracy with all errors in the voltage loop included.
6. During soft start, VDAC rises from 0 to VID. The overvoltage trip level is the higher of 1.7V and VDAC + 0.2V.
TYP
500
3.00
-
-
1.5
66.7
80
18
6.0
4.3
-
-
20
-
-
-
-
81
110
-
74
200
1.63
1.8
0.6
1.5
1.9
-
MAX UNITS
515 mV
3.09 V
10
%
1.5 MHz
-
V
-
%
-
dB
-
MHz
7.5 V/µs
-
V
-
V
1.35 V
-
MHz
500 µA
500 µA
0.3
V
-
V
91
µA
122 µA
0.4
V
76 %VID
220 mV
-
V
1.87 V
-
V
-
V
-
V
-
V
8