ISL6539 Intersil Corporation, ISL6539 Datasheet - Page 5

• Manufacturer Part Number: ISL6539
• Description: Wide Input Range Dual PWM Controller with DDR Option
• Manufacturer: Intersil Corporation

Electrical Specifications
Functional Pin Description
GND (Pin 1, 9, 20)
Signal ground for the IC. All three ground pins must be
connected to ground for proper IC operation. Connect to the
ground plane through a path as low in inductance as
possible.
LGATE1, LGATE2 (Pin 2, 27)
Connect these pins to the gates of the corresponding lower
MOSFETs. These pins provide the PWM-controlled gate
drive for the lower MOSFETs.
PGND1, PGND2 (Pin 3, 26)
These pins provide the return connection for lower gate
drivers, and are connected to sources of the lower
MOSFETs of their respective converters. These pins must
be connected to the ground plane through a path as low in
inductance as possible.
PWM CONVERTERS
Load Regulation
VSEN pin bias current
Minimum Duty Cycle
Maximum Duty Cycle
Undervoltage Shut-Down Level
Overvoltage Protection
GATE DRIVERS
Upper Drive Pull-Up Resistance
Upper Drive Pull-Down Resistance
Lower Drive Pull-Up Resistance
Lower Drive Pull-Down Resistance
POWER GOOD AND CONTROL FUNCTIONS
Power Good Lower Threshold
Power Good Higher Threshold
PGOODx Leakage Current
PGOODx Voltage Low
ISEN sourcing current
OCSET sourcing current range
EN - Low (Off)
EN - High (On)
DDR - Low (Off)
DDR - High (On)
DDR REF Output Voltage
DDR REF Output Current
PARAMETER
5
Recommended Operating Conditions, Unless Otherwise Noted. (Continued)
R
R
SYMBOL
R
R
V
V
I
I
V
2UGPUP
2UGPDN
2LGPUP
2LGPDN
PGLKG
DDREF
I
D
PGOOD
V
D
V
DDREF
VSEN
V
OVP1
MAX
PG+
UVL
MIN
PG-
0.0mA < I
By design
Fraction of the set point; ~2ms noise filter
Fraction of the set point; ~2ms noise filter
V
V
V
V
Fraction of the set point; ~3ms noise filter
Fraction of the set point; ~3ms noise filter.
V
I
By design
DDR = 1, I
DDR = 1. Guaranteed by design.
PGOOD
CC
CC
CC
CC
PULLUP
= 5V
= 5V
= 5V
= 5V
= -4mA
VOUT1
= 5.5V
REF
ISL6539
TEST CONDITIONS
= 0...10mA
< 5.0A; 5.0V < V
PHASE1, PHASE2 (Pin 4, 25)
The PHASE1 and PHASE2 points are the junction points of
the upper MOSFET sources, output filter inductors, and
lower MOSFET drains. Connect these pins to the respective
converter’s upper MOSFET source.
UGATE1, UGATE2 (Pin 5, 24)
Connect these pins to the gates of the corresponding upper
MOSFETs. These pins provide the PWM-controlled gate
drive for the upper MOSFETs.
BOOT1, BOOT2 (Pin 6, 23)
These pins power the upper MOSFET drivers of the PWM
converter. Connect these pins to the junction of the bootstrap
capacitor with the cathode of the bootstrap diode. The anode
of the bootstrap diode is connected to the VCC voltage.
IN
< 15.0V
V
0.99*
MIN
-2.0
110
110
2.0
70
84
OC2
2
3
-
-
-
-
-
-
-
-
-
-
-
-
-
V
TYP
115
115
2.3
1.1
0.5
OC2
80
87
75
89
10
4
4
4
-
-
-
-
-
-
-
-
V
1.01*
MAX
+2.0
120
260
0.8
0.8
OC2
80
92
20
12
8
4
8
3
1
1
-
-
-
-
-
-
UNITS
mA
µA
µA
µA
nA
%
%
%
%
%
%
%
Ω
Ω
Ω
Ω
V
V
V
V
V
V