ISL6556B Datasheet, PDF (8/24 Pages) Intersil Corporation – Optimized Multi-Phase PWM Controller with 6-Bit DAC and Programmable Internal Temperature Compensation for VR10.X Application

ISL6556B
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 TYP
PIN-ADJUSTABLE OFFSET
Voltage at OFS pin
Offset resistor connected to ground
485 500
VCC = 5.00V, offset resistor connected to VCC
2.91 3.00
OSCILLATOR
Accuracy
Adjustment Range
R_T = 100kΩ
-10
-
0.08 -
Sawtooth Amplitude
-
1.5
Max Duty Cycle
- 66.7
ERROR AMPLIFIER
Open-Loop Gain
Open-Loop Bandwidth
Slew Rate
Maximum Output Voltage
R_L = 10kΩ to ground
C_L = 100pF, R_L = 10kΩ to ground
C_L = 100pF
-
80
-
18
4.5 6.0
4.0 4.3
Output High Voltage @ 2mA
3.7
-
Output Low Voltage @ 2mA
-
-
REMOTE-SENSE AMPLIFIER
Bandwidth
-
20
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
-
TEMPERATURE COMPENSATION
Temperature Compensation Current @ 40°C and
Tcomp = 0.5V
10 15
Temperature Compensation Transconductance
-
1
SENSE CURRENT
Sensed Current Tolerance
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80µA, 0°C to 105°C 74 81
Overcurrent Trip Level
98 110
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
Undervoltage Offset From VID
I_PGOOD = 4mA
VSEN Falling
-
-
72 74
Overvoltage Threshold
Voltage above VID, after Soft-Start (Note 5)
180 200
Before Enable
- 1.63
VCC < POR Threshold
1.7 1.8
Overvoltage Reset Voltage
VCC ≥ POR Threshold, VSEN Falling
-
0.6
VCC < POR Threshold
-
1.5
OVP Drive Voltage
Minimum VCC for OVP
I_OVP = -100mA, VCC = 5V
-
1.9
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.
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
20
µA
- 1µA/V/°C
91
µA
122
µA
0.4
V
76 %VID
220
mV
-
V
1.87
V
-
V
-
V
-
V
-
V
8
FN9097.4
December 28, 2004