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CS5308 Datasheet(PDF) 6 Page - ON Semiconductor

Part No. CS5308
Description  Two−Phase PWM Controller with Integrated Gate Drivers for VRM 8.5
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS5308 Datasheet(HTML) 6 Page - ON Semiconductor

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CS5308
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6
ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 125°C; 9.0 V < VCCH1 = VCCH2 < 20 V;
4.5 V < VCCL =VCCL12 < 14 V; CGATE = 3.3 nF, RROSC = 32.4 k, CCOMP = 0.1 mF, CREF = 0.1 mF, DAC Code 01000 (1.65 V),
CVCC = 0.1 mF; unless otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Test Conditions
GATES
Fall Time GATEx
8.0 V > GATE > 1.0 V; VCCx = 10 V
35
80
ns
GATE(H)x to GATE(L)x Delay
GATE(H)x < 2.0 V,
GATE(L)x > 2.0 V
30
65
110
ns
GATE(L)x to GATE(H)x Delay
GATE(L)x < 2.0 V,
GATE(H)x > 2.0 V
30
65
110
ns
GATE Pull−down
Force 100 mA into Gate with no power applied
to VCCHx and VCCLx = 2.0 V
1.2
1.6
V
Oscillator
Switching Frequency
ROSC = 32.4 k
340
400
460
kHz
Switching Frequency
ROSC = 63.4 k, Note 4.
150
200
250
kHz
Switching Frequency
ROSC = 16.2 k, Note 4.
600
800
1000
kHz
ROSC Voltage
1.0
V
Phase Delay
Rising edge only
165
180
195
deg
Adaptive Voltage Positioning
VDRP Offset
CS1 = CS2 = CSREF, VFB = COMP, Measure
VDRP − COMP
−15
15
mV
VDRP Operating Voltage Range
Measure VDRP − GND, Note 4.
0.1
2.3
V
Maximum VDRP Voltage
(CS1 = CS2) − CSREF = 50 mV,
VFB = COMP
Measure VDRP − COMP
260
320
400
mV
Current Share Amp to VDRP Gain
2.6
3.2
4.0
V/V
Current Sensing and Sharing
CS1 − CS2 Input Bias Current
V(Cx) = V(CSREF) = 0 V
0.1
2.0
mA
CSREF Input Bias Current
0.5
2.0
mA
Current Sense Amplifier Gain
3.05
3.50
3.95
V/V
Current Sense Amp Mismatch (The
sum of gain and offset errors.)
0 < CSx − CSREF < 50 mV.
Note 4.
−5.0
5.0
mV
Current Sense Input to ILIM Gain
ILIM = 1.0 V
5.5
6.5
7.5
V/V
Current Limit Filter Slew Rate
Note 4.
7.5
15
40
mV/ms
ILIM Operating Voltage Range
Note 4.
0.1
1.3
V
ILIM Bias Current
0 V < ILIM < 1.0 V
0.1
1.0
mA
Single Phase Pulse by Pulse Current
Limit: V(Cx) − V(CSREF)
90
105
135
mV
Current Sense Amplifier Bandwidth
Note 4.
1.0
MHz
4. Guaranteed by design. Not tested in production.


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