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NCP5393 Datasheet, PDF (9/21 Pages) ON Semiconductor – 2/3/4-Phase Controller for CPU Applications
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NCP5393
ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°CvTAv70°C; 4.75 VvVCCv5.25 V; All DAC Codes; CVCC = 0.1 mF)
Parameter
Test Conditions
Min
Typ
Max
Unit
CURRENT SENSE AMPLIFIERS (VDD & VDDNB)
Input Bias Current
CSx = CSxN = 1.4 V
-50
-
50
nA
Common Mode Input Voltage Range
-0.3
-
2.6
V
Differential Mode Input Voltage
Range (Note 3)
-120
-
120
mV
Input Offset Voltage (Note 3)
CSx = CSxN = 1.00 V
-1.0
-
1.0
mV
Gain from Current Sense Input to
PWM Comparator
0 mV < (CSx - CSxN) < 60 mV
5.0
6.0
7.0
V/V
INTERNAL OFFSET VOLTAGE
Voltage at Error Amplifier Non-In‐
verting Inputs
-
1.3
-
V
DRVON & NB_DRVON
Output Voltage (High)
Output Voltage (Low)
Sourcing 500 mA
Sinking 500 mA
3.0
-
-
V
-
-
0.7
V
Delay Time
Propagation Delays
-
10
-
ns
Active Internal Pull-up Resistance
Sourcing 500 mA
-
2.0
-
kW
Active Internal Pull-down Resistance Sinking 500 mA
-
150
-
W
Rise Time
Fall Time
VDD PWM OSCILLATOR
Switching Frequency Range
CL (PCB) = 20 pF, DVOUT = 10% to 90%
CL (PCB) = 20 pF, DVOUT = 10% to 90%
-
130
-
ns
-
15
-
ns
100
-
900
kHz
Switching Frequency Accuracy
2- or 4-phase
ROSC = 49.9 kW
ROSC = 24.9 kW
ROSC = 10 kW
196
-
226
kHz
380
-
420
803
-
981
Switching Frequency Accuracy
3-phase
ROSC = 49.9 kW
ROSC = 24.9 kW
ROSC = 10 kW
196
-
226
kHz
380
-
420
803
-
981
ROSC Output Voltage
10 mA ≤ IROSC ≤ 200 mA
1.94
2.0
2.06
V
VDDNB PWM OSCILLATOR
Switching Frequency
PWM COMPARATORS (VDD & VDDNB)
Minimum Pulse Width (Note 3)
FSW = 800 kHz
Propagation Delay (Note 3)
$20 mV of Overdrive
-
1.25
-
x fVDD
-
30
-
ns
-
10
-
ns
Magnitude of the PWM Ramp
-
1.0
-
V
0% Duty Cycle
COMP Voltage at which the PWM Outputs Remain
LOW
-
0.2
-
V
100% Duty Cycle
COMP Voltage at which the PWM Outputs Remain
HIGH
-
1.2
-
V
PWM Phase Angle Error
Between Adjacent Phases
-15
+15
°
PWRGOOD OUTPUT
PWRGOOD Output Voltage (Low)
IPGD = 5 mA
-
-
0.4
V
PWRGOOD Rise Time
External Pullup of 1 kW to 5 V CTOTAL = 45 pF, DVOUT
-
125
-
ns
= 10% to 90%
PWRGOOD High-State Leakage
VPWRGOOD = 5.25 V
3. Guaranteed by design. Not production tested.
-
-
1
mA
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