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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V IN = 10V, V CC = V DD = V SHDN = V PGDIN = V PSI = V ILIM = 5V, V V3P3 = 3.3V, V DPRSLPVR = V DPRSTP = V GNDS =
V PGND_ = 0, CSPAVG = CSP_ = CSN_ = OUTS = 1.0000V, R FB = 3.57k Ω from FB to VPS, [D6–D0] = [0101000]; T A = -40°C to
+105°C , unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
V CC , V DD
4.5
5.5
Input Voltage Range
V3P3
IN
3.0
4.5
3.6
26
V
Measured at FB
DAC codes from
0.8125V to 1.5000V
-0.75
+0.75
%
DC Output Voltage Accuracy
V OUT
with respect to
GNDS, includes
load regulation error
DAC codes from
0.3750V to 0.8000V
-10
+10
mV
(Note 2)
DAC codes from 0 to
0.3625V
-25
+25
Boot Voltage
OUTS to VPS Resistance
GNDS Input Range
V BOOT
1.185
3.5
-200
1.215
40
+200
V
mV
GNDS Gain
GNDS Input Bias Current
TIME Regulation Voltage
A GNDS
I GNDS
V TIME
V OUT / V GNDS
V(OUTS, GNDS) = 1.0V
R TIME = 71.5k
R TIME = 71.5k
(12.5mV/μs nominal)
0.97
-15
1.985
-10
1.03
-4
2.015
+10
V/V
μA
V
R TIME = 35.7k (25mV/μs nominal) to
178k (5mV/μs nominal)
-15
+15
TIME Slew-Rate Accuracy
Soft-start and soft-shutdown: R TIME =
35.7k (3.125mV/μs nominal) to 178k
-16
+30
%
(0.625mV/μs nominal)
Slow: V DPRSTP = V DPRSLPVR = 5V, 1/4
normal slew rate, R TIME = 35.7k
(6.25mV/
-12
+25
μs nominal) to 178k
(1.25mV/μs nominal)
V IN = 10V, V FB = 1.0V, V CCI = (1.0V +
On-Time Accuracy
t ON
V DIODE ), measured at DH_, 300kHz per
290
333
376
ns
phase nominal (Note 3)
Minimum Off-Time
t OFF(MIN)
Measured at DH_ (Note 3)
375
ns
BIAS CURRENTS
Quiescent Supply Current (V CC )
Quiescent Supply Current (IN)
I CC
I IN
Measured at V CC , V DPRSLPVR = 5V, FB
forced above the regulation point
Measured at IN, V IN = 10V
6
25
mA
μA
_______________________________________________________________________________________
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