ISL6442 Datasheet, PDF (5/16 Pages) Intersil Corporation – Dual (180° Out-of-Phase) PWM and Linear Controller

ISL6442
Electrical Specifications
Operating Conditions Unless Otherwise Noted: VIN = 12V, or V_CC = 5V ±10%, T_A = -40°C to +85°C. Typical
values are at +25°C. 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
PWM CONVERTERS
Minimum UGATE on Time
t_{UGATE_min} (Note 3)
100
ns
Maximum Duty Cycle
DC_max
VIN = 4.5 or 12V; F_SW = 300kHz
95
%
Maximum Duty Cycle
DC_max
VIN = 4.5V; F_SW = 2.5MHz
80
%
FB_x Pin Bias Current
I_FBx
(Note 3)
80
nA
OSCILLATOR
Low End Frequency
F_SW
VIN = 5V or 12V; RT = 52.3kΩ
VIN = 24V; RT = 52.3kΩ
270
300
330
kHz
270
305
340
kHz
High End Frequency
F_SW
VIN = 5V; RT = 5.23kΩ
VIN = 12V; RT = 5.23kΩ
2.25
2.5
2.75
2.25
2.55
2.85
MHz
MHz
Frequency Adjustment Range
F_SW
RT = 52.3kΩ; (Note 3)
RT = 5.23kΩ; (Note 3)
0.3
MHz
2.5
MHz
PWM Sawtooth Ramp Amplitude V_P-P
(Peak-to-Peak)
(Note 4)
1.25
V
PWM CONTROLLER GATE DRIVERS
Gate Drive Peak Current
(Note 3)
0.7
A
Rise Time
Fall Time
Dead Time Between Drivers
(Note 3); C_L = 1000pF
(Note 3); C_L = 1000pF
(Note 3)
20
ns
20
ns
30
ns
ERROR AMPLIFIERS
DC Gain
Gain
(Note 4)
88
dB
Gain-Bandwidth Product
GBWP
(Note 4)
15
MHz
Slew Rate
SR
(Note 4); COMP = 10pF
5
V/µs
Maximum Output Voltage
V_{EA_max}
PROTECTION and OUTPUT MONITOR
VCC = 5V; RL = 10kΩ to ground
3.9
4.4
Overvoltage Threshold
OV
113
116
121
%
Undervoltage Threshold
UV
78
82
88
%
OCSET Current Source
LINEAR CONTROLLER
I_OCSET
V_OCSET = 4.5V
80
110
140
µA
Drive Sink Current
LCFB Feedback Threshold
LCFB Input Leakage Current
PGOOD
I_LCDR
V_LCFB
I_LCFB
LCDR
T_A = +25°C
T_A = -40°C to +85°C
T_A = 0°C to +70°C
(Note 3)
50
mA
0.595
V
0.570
0.620
V
0.580
0.610
V
80
nA
Power-Good Lower Threshold
PG_low_x LCFB = VCC, LDO disabled
PGOOD for Ch1 and Ch2 only
88
91
94
%
Power-Good Higher Threshold
PG_hi_x
LCFB = VCC, LDO disabled
PGOOD for Ch1 and Ch2 only
107
110
113
%
5
FN9204.2
October 31, 2008