ISL6446 Datasheet, PDF (7/20 Pages) Intersil Corporation – Dual (180° Out-of-Phase) PWM and Linear Controller

ISL6446
Electrical Specifications Operating Conditions Unless Otherwise Noted: V_IN = 12V, or V_CC = 5V ±10%, T_A = -40°C to +85°C. Typical
values are at +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
(Note 9)
TYP
MAX
(Note 9)
UNITS
EN_x/SS_x Soft-Start Top of Ramp
Voltage
V_{SSx_top} (Note 7)
3.12
V
POWER-ON RESET ON VCC
Rising Threshold
Falling Threshold
PWM CONVERTERS
V_{POR_r}
V_{POR_f}
4.2
4.4
4.48
V
3.85
4.0
4.1
V
Minimum UGATE on Time
Maximum Duty Cycle
Maximum Duty Cycle
FB_x Pin Bias Current
OSCILLATOR
t_{UGATE_min} (Note 7)
DC_max V_IN = 5.0V or 12V; F_SW = 300kHz
DC_max V_IN = 5.0V; F_SW = 2.58MHz
I_FBx VFB1 = VFB2 = 600mV
100
ns
95
%
80
%
-250
30
250
nA
Low End Frequency
Oscillation Frequency
High End Frequency
Frequency Adjustment Range
F_SW V_IN = 12V; RT = 163kΩ
F_SW V_IN = 5V or 12V; RT = 52.3kΩ
V_IN = 24V; RT = 52.3kΩ
F_SW V_IN = 5V; RT = 4.75kΩ
V_IN = 12V; RT = 4.75kΩ
F_SW RT = 163kΩ; (Note 7)
RT = 4.75kΩ; (Note 7)
103
kHz
270
300
330
kHz
270
305
340
kHz
2.25
2.5
2.75
MHz
2.25
2.59
2.85
MHz
0.1
MHz
2.6
MHz
PWM Sawtooth Ramp Amplitude
(Peak-to-Peak)
V_P-P (Note 8)
1.25
V
PWM Sawtooth Ramp Offset
V_{PWM_OFF} (Note 8)
PWM CONTROLLER GATE DRIVERS (Note 7)
1.25
V
Upper Gate Pull-up Resistance
2.6
Ω
Upper Gate Pull-down Resistance
2
Ω
Lower Gate Pull-up Resistance
2.6
Ω
Upper Gate Pull-down Resistance
2
Ω
Rise Time
Fall Time
Dead Time Between Drivers
C_L = 3300pF
C_L = 3300pF
25
ns
25
ns
20
ns
ERROR AMPLIFIERS
DC Gain
Gain (Note 8)
88
dB
Gain-Bandwidth Product
GBWP (Note 8)
15
MHz
Slew Rate
SR (Note 8); COMP = 10pF
5
V/µs
Maximum Output Voltage
Minimum Output Voltage
PROTECTION AND OUTPUT MONITOR
V_{EA_H}
V_{EA_L}
I_{COMP_SRC} = 40µA
I_{COMP_SINK} = 40µA
3.9
4.2
V
0.8
1.1
V
Overvoltage Threshold
OV
111
116
121
%
Undervoltage Threshold
UV
77
82
88
%
OCSET Current Source
I_OCSET V_OCSET = 4.5V, T_A = -40°C
80
µA
7
FN7944.0
July 10, 2012