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CS5323 Datenblatt(PDF) 5 Page - ON Semiconductor

Teilenummer CS5323
Bauteilbeschribung  Three-Phase Buck Controller with 5-Bit DAC
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Hersteller  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
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CS5323
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ELECTRICAL CHARACTERISTICS (continued) (0
°C < TA < 70°C; 0°C < TJ < 85°C; 4.7 V < VCC < 14 V; CGATE = 100 pF,
RR(OSC) = 53.6 k, CCOMP = 0.1 µF, CREF = 0.1µF, DAC Code 10000, CVCC = 0.1 µF, ILIM ≥ 1.0 V; unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Voltage Feedback Error Amplifier
VFB Bias Current (Note 2)
0.9 V < VFB < 1.9 V
17.6
19.0
20.6
µA
COMP Source Current
COMP = 0.5 V to 2.0 V; VFB = 1.8 V; DAC = 00000
15
30
60
µA
COMP Sink Current
COMP = 0.5 V to 2.0 V; VFB = 1.9 V; DAC = 00000
15
30
60
µA
COMP Discharge Threshold Voltage
0.20
0.27
0.34
V
Transconductance
–10
µA < ICOMP < +10 µA
32
mmho
Output Impedance
2.5
M
Open Loop DC Gain
Note 3
60
90
dB
Unity Gain Bandwidth
0.01
µF
400
kHz
PSRR @ 1 kHz
70
dB
COMP Max Voltage
VFB = 1.8 V; COMP Open; DAC = 00000
2.4
2.7
V
COMP Min Voltage
VFB = 1.9 V; COMP Open; DAC = 00000
0.1
0.2
V
Hiccup Latch Discharge Current
2.0
5.0
10
µA
COMP Discharge Ratio
4.0
6.0
10
PWM Comparators
Minimum Pulse Width
Measured from CSx to GATE(H) with 60 mV step
between CSx and CSREF
350
500
ns
Channel Start Up Offset
V(CS1) = V(CS2) = V(CS3) = V(VFB)
V(CSREF) = 0 V; Measure V(COMP) when
GATE (H) 1, 2 switch high
0.3
0.4
0.5
V
GATEs
High Voltage
Measure VCC – GATEx, IGATEx = 1.0 mA
1.2
2.1
V
Low Voltage
Measure GATEx, IGATEx = 1.0 mA
0.25
0.50
V
Rise Time GATE
1.0 V < GATE < 8.0 V; VCC = 10 V
30
60
ns
Fall Time GATE
8.0 V > GATE > 1.0 V; VCC = 10 V
30
60
ns
Oscillator
Switching Frequency
ROSC = 53.6 k
220
250
280
kHz
Switching Frequency
Note 3 ROSC = 32.4 k
300
400
500
kHz
Switching Frequency
Note 3 ROSC = 16.2 k
600
800
1000
kHz
ROSC Voltage
1.00
V
Phase Delay
Rising edge only
105
120
135
deg
Adaptive Voltage Positioning
VDRP Offset
CS1 = CS2 = CS3 = CSREF, VFB = COMP
Measure VDRP – COMP
–20
20
mV
Maximum VDRP Voltage
|(CS1 = CS2 = CS3) – CREF| = 50 mV,
VFB = COMP, Measure VDRP – COMP
360
465
570
mV
Current Share Amp to VDRP Gain
2.7
3.0
3.5
V/V
2. The VFB Bias Current changes with the value of ROSC per Figure 4.
3. Guaranteed by design. Not tested in production.


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