ISL6564A Datasheet, PDF (9/28 Pages) Intersil Corporation – Multiphase PWM Controller with Linear 6-Bit DAC Capable of Precision rDS(ON) or DCR Differential Current Sensing

ISL6564A
Electrical Specifications Operating Conditions: VCC = 5V or ICC < 25mA (Note 3). Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
OSCILLATOR
Accuracy
Adjustment Range
R_T = 100kΩ
260 300 345 kHz
0.08 -
1.5 MHz
Sawtooth Amplitude
-
2
-
V
Max Duty Cycle
- 66.7 -
%
ERROR AMPLIFIER
Open-Loop Gain
Open-Loop Bandwidth
Maximum Output Voltage
R_L = 10kΩ to ground
C_L = 100pF, R_L = 10kΩ to ground
-
80
-
dB
-
18
- MHz
4.0 4.3
-
V
Output High Voltage @ 2mA
3.7
-
-
V
Output Low Voltage @ 2mA
-
- 1.35 V
REMOTE-SENSE AMPLIFIER
Bandwidth
-
20
- MHz
Output Voltage @ 1mA Load
VSEN - RGND = 2.5V
2.48 2.50 2.52 V
PWM OUTPUT
PWM Output Voltage LOW
Iload = ±500μA
-
-
0.5
V
PWM Output Voltage HIGH
Iload = ±500μA
4.0
-
-
V
DRIVER ENABLE OUTPUT
DRVEN Output Voltage LOW
Iload = ±1mA
-
-
0.3
V
DRVEN Output Voltage HIGH
Iload = ±1mA
4.0
-
-
V
SENSE CURRENT OUTPUT
Sensed Current Accuracy
ISEN1 = ISEN2 = ISEN3 = ISEN4 = 80μA
75 85 93
μA
Overcurrent Trip Level
95 110 125 μA
Maximum Voltage at IDROOP and IOUT VCC = 4.5V (Note 5)
2
V
POWER GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
Undervoltage Offset From VID
I_PGOOD = 4mA
VSEN falling
-
-
0.3
V
70 75 80 %VID
Overvoltage Threshold
Voltage above VID, after soft-start (Note 6)
180 200 230 mV
Before enable
1.40 1.45 1.50 V
VCC < POR threshold
1.7 1.8 1.87 V
Overvoltage Reset Voltage
VCC ≥ POR threshold, VSEN falling
-
0.6
-
V
VCC < POR threshold
-
1.5
-
V
OVP Drive Voltage
I_OVP = -10mA, VCC = 5V
3.0 3.6 5.0
V
NOTES:
3. When using the internal shunt regulator, VCC is clamped to 6.2V (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. Guaranteed by design.
6. During soft-start, VDAC rises from 0 to VID. The overvoltage trip level is the higher of 1.5V and VDAC + 0.2V.
9
FN6285.1
March 20, 2007