ISL6336B Datasheet, PDF (8/31 Pages) Intersil Corporation – 6-Phase PWM Controller with Light Load Efficiency Enhancement and Current Monitoring

ISL6336B
Electrical Specifications Operating Conditions: VCC = 5V, Unless Otherwise Specified. (Continued)
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7) UNITS
PIN-ADJUSTABLE OFFSET
Voltage at OFS Pin
Offset resistor connected to ground
390 400 415
mV
Voltage below VCC, offset resistor connected to VCC
1.574 1.60 1.635
V
OSCILLATORS
Accuracy of Switching Frequency Setting
Adjustment Range of Switching Frequency
R_T = 100kΩ
(Note 4)
225 250 275 kHz
0.08
-
1.0 MHz
Soft-Start Ramp Rate
Adjustment Range of Soft-Start Ramp Rate
R_SS = 100kΩ (Notes 5, 6)
(Note 4)
- 1.563
0.625 -
-
6.25
mV/µs
mV/µs
PWM GENERATOR
Sawtooth Amplitude
-
1.5
-
V
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
-
96
-
dB
-
80
-
MHz
-
25
-
V/µs
3.8
4.4
4.9
V
Output High Voltage @ 2mA
3.6
-
-
V
Output Low Voltage @ 2mA
-
-
1.6
V
REMOTE-SENSE AMPLIFIER
Bandwidth
-
20
-
MHz
Output High Current
VSEN - RGND = 2.5V
-500
-
500
µA
Output High Current
VSEN - RGND = 0.6V
-500
-
500
µA
APA INPUT
APA Sink Current
-
50
-
µA
PWM OUTPUT
Sink Impedance
PWM = LOW with 1mA load
100 220 300
Ω
Source Impedance
PWM = HIGH, forced to 3.7V
200 320 400
Ω
PSI# INPUT
Threshold HIGH
-
-
0.8
V
Threshold LOW
0.4
-
-
V
H_CPURST_N INPUT
PSI# Time Out
With Respect to H_CPURST_N Rising Edge
38
-
60
ms
HIGH Signal Threshold
-
-
0.8
V
LOW Signal Threshold (PSI# Lockout)
0.4
-
-
V
CURRENT SENSE AND OVERCURRENT PROTECTION
Sensed Current Tolerance
ISEN1 = ISEN2 = ISEN3 = ISEN4 = ISEN5 = ISEN6 = 40µA; 36.5
-
Offset and Mirror Error Included, RISENx = 200Ω
42
µA
ISEN1 = ISEN2 = ISEN3 = ISEN4 = ISEN5 = ISEN6 = 80µA; 74
-
83
µA
Offset and Mirror Error Included, RISENx = 200Ω
Overcurrent Trip Level for Average Current
(PSI# = 1)
Offset and Mirror Error Included, RISENx = 200Ω
96
105 117
µA
Overcurrent Trip Level for Average Current
(PSI# = 0)
Number of Phases = 6, Drop to 1-Phase
-
135
-
µA
8
FN6696.2
August 31, 2010