ISL8120IRZEC Datasheet, PDF (16/33 Pages) Intersil Corporation – Dual/n-Phase Buck PWM Controller with Integrated Drivers

ISL8120IRZEC
Electrical Specifications
Recommended Operating Conditions, Unless Otherwise Noted. Parameters with MIN and/or MAX limits are
100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are
not production tested. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNITS
Disable Threshold (Note3)
GATE DRIVERS
V_VSEN-
V_MON1,2 = Tri-State
VCC - 0.4
V
Upper Drive Source Resistance
Upper Drive Sink Resistance
Lower Drive Source Resistance
Lower Drive Sink Resistance
OVERCURRENT PROTECTION
R_UGATE
R_UGATE
R_LGATE
R_LGATE
45mA Source Current
45mA Sink Current
45mA Source Current
45mA Sink Current
1.0
Ω
1.0
Ω
1.0
Ω
0.4
Ω
Channel Overcurrent Limit (Note 3)
Channel Overcurrent Limit
Share Pin OC Threshold
I_SOURCE
I_SOURCE
V_{OC_SET}
VCC = 3V to 5.6V
VCC = 5V
VCC = 3V to 5.6V
(comparator offset included)
108
µA
89
108
122
µA
1.16
1.20
1.22
V
Share Pin OC Hysteresis (Note 3)
V_{OC_SET_HYS} VCC = 3V to 5.6V
(comparator offset included)
50
mV
CURRENT SHARE
Internal Balance Accuracy (Note 3)
VCC = 3V and 3.6V, 1% Resistor
Sense, 10mV Signal
±5
%
Internal Balance Accuracy (Note 3)
VCC = 4.5V and 5.6V, 1% Resistor
Sense, 10mV Signal
±5
%
External Current Share Accuracy (Note 3)
VCC = 3V and 5.6V, 1% Resistor
Sense, 10mV Signal
±5
%
POWER GOOD MONITOR
Undervoltage Falling Trip Point
Undervoltage Rising Hysteresis
Overvoltage Rising Trip Point
Overvoltage Falling Hysteresis
PGOOD Low Output Voltage
Sinking Impedance
Maximum Sinking Current (Note 3)
OVERVOLTAGE PROTECTION
V_UVF
Percentage Below Reference Point
-15
-13
-11
%
V_{UVR_HYS} Percentage Above UV Trip Point
4
%
V_OVR
Percentage Above Reference Point
11
13
15
%
V_{OVF_HYS} Percentage below OV Trip Point
4
%
I_PGOOD = 2mA
0.35
V
I_PGOOD = 2mA
70
Ω
V_PGOOD < 0.8V
10
mA
OV Latching Up Trip Point
EN/FF= UGATE = LATCH Low,
LGATE = High
118
120
122
%
OV Non-Latching Up Trip Point (Note 3)
EN/FF = Low, UGATE = Low,
LGATE = High
113
%
LGATE Release Trip Point
EN/FF = Low/HIGH, UGATE = Low,
LGATE = Low
87
%
OVER-TEMPERATURE PROTECTION
Over-Temperature Trip (Note 3)
150
°C
Over-Temperature Release Threshold
(Note 3)
125
°C
16
FN6763.1
April 21, 2009