ADP3207C Просмотр технического описания (PDF) - ON Semiconductor
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ADP3207C Datasheet PDF : 32 Pages
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ADP3207C
ELECTRICAL CHARACTERISTICS VCC = 5.0 V, FBRTN = GND, EN = VCC, VVID = 0.50 V to 1.5000 V, PSI = 1.05 V,
DPRSLP = GND, DPRSTP= 1.05 V, LLSET = CSREF, TA = −10°C to 100°C, unless otherwise noted (Note 1). RREF = 80 kW.
Current entering a pin (sunk by the device) has a positive sign.
Parameter
Symbol
Conditions
Min Typ
CURRENT MONITOR
Current Gain Accuracy
IMON/ILIM
Measured from ILIMP to IMON
ILIM = −20 mA
ILIM = −10 mA
IMON Clamp Voltage
VMAXMON
Relative to FBRTN, ILIMP = −30 mA
PULSE WIDTH MODULATOR − Clock Oscillator
9.3
10
9.2
10
1.05
RT Voltage
PWM Clock Frequency
Range (Note 2)
VRT
RT = 125 kW, VVID = 1.4000 V
See also VRT(VVID) formula
fCLK
Operating Range
1.12
1.2
0.3
PWM Clock Frequency
RAMP GENERATOR
fCLK
TA = +25°C, VVID = 1.2000 V
RT = 73 kW
RT = 125 kW
RT = 180 kW
1150
500
1450
850
630
RAMP Voltage
RAMP Current Range
(Note 2)
VRAMP
IRAMP
EN = high, IRAMP = 30 mA
EN = low
EN = high
EN = low, RAMP = 19 V
0.9
1.0
VIN
1.0
−0.5
PWM COMPARATOR
PWM Comparator Offset
(Note 2)
VOSRPM
VRAMP − VCOMP
−3.0
RPM COMPARATOR
RPM Current
RPM Comparator Offset
(Note 2)
IRPM
VOSRPM
VVID = 1.2 V, RT = 125 kW
See also IRPM(RT) formula
VCOMP − (1 +VRPM)
−8.8
−3.0
EPWM CLOCK SYNC
Trigger Threshold (Note 2)
Relative to COMP sampled TCLK earlier
3−phase configuration
300
2−phase configuration
350
1−phase configuration
400
SWITCH AMPLIFIER
SW Common Mode Range
(Note 2)
VSW(X)CM
Operating Range for current sensing
−600
SW Input Resistance
RSW(X)
SWX = 0 V
ZERO CURRENT SWITCHING COMPARATOR
20
32
SW ZCS Threshold
Masked Off Time
VDCM(SW1)
tOFFMSKD
DCM mode, DPRSLP = 3.3 V
Measured from PWM neg edge to PWM Pos
Edge at max frequency of operation
−4.0
700
SYSTEM I/O BUFFERS VID[6:0], PSI INPUTS
Input Voltage
Input Current
VID Delay Time (Note 2)
Refers to driving signal level
Logic low, Isink w 1 mA
Logic high, Isource v −5 mA
V = 0.2 V
VID[6:0], DPRSLP (active pulldown to GND)
PSI (active pullup to VCC)
Any VID edge to FB change 10%
0.7
−1.0
+2.0
200
1. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).
2. Guaranteed by design or bench characterization, not production tested.
Max
10.7
10.8
1.15
1.28
3.0
1750
780
1.1
100
+0.5
3.0
3.0
+200
45
0.3
Unit
V
V
MHz
kHz
V
mA
mV
mA
mV
mV
mV
kW
mV
ns
V
mA
ns
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