ADP3212 ON Semiconductor, ADP3212 Datasheet - Page 6

• Manufacturer Part Number: ADP3212
• Description: 7-bit Programmable, 3-phase,mobile Cpu Synchronous Buck Controller
• Manufacturer: ON Semiconductor

ADP3212/NCP3218
Parameter
PULSE WIDTH
MODULATOR
CLOCK OSCILLATOR
RAMP GENERATOR
PWM COMPARATOR
RPM COMPARATOR
EPWM CLOCK SYNC
TRDET#
SWITCH AMPLIFIER
ZERO CURRENT SWITCHING
COMPARATOR
SYSTEM I/O BUFFERS
VID[6:0], DPRSLP, PSI# INPUTS
RT Voltage
PWM Clock Frequency
RAMP Current Range
PWM Comparator Offset
RPM Current
RPM Comparator Offset
Trigger Threshold
Trigger Threshold
TRDET# Low Voltage
TRDET# Leakage Current
SW Common Mode Range
SWFB Input Resistance
SW ZCS Threshold
Masked Off-Time
Input Voltage
IMON Clamp Voltage
PWM Clock Frequency
Range
RAMP Voltage
2
2
2
2
2
2
2
2
Symbol
V
V
f
f
V
I
V
I
V
V
I
V
R
V
t
CLK
CLK
RAMP
RPM
HTRDET
OFFMSKD
MAXMON
RT
RAMP
OSRPM
OSRPM
LTRDET
SW(X)CM
SW(X)
DCM(SW1)
Conditions
I
Relative to FBRTN, ILIMP = −30 uA
VARFREQ = high, R
VARFREQ = low
See also V
Operation of interest
T
R
R
R
EN = high, I
EN = low
EN = high
EN = low, RAMP = 19 V
V
V
See also I
V
Relative to COMP sampled T
3-phase configuration
2-phase configuration
1-phase configuration
Relative to COMP sampled T
3-phase configuration
2-phase configuration
1-phase configuration
Logic low, I
Logic high, V
Operation of interest for current sensing
SW
DCM mode, DPRSLP = 3.3 V
Measured from DRVH1 neg edge to DRVH1 pos
edge at max frequency of operation
Refers to driving signal level
Logic low
Logic high
LIM
A
T
T
T
RAMP
VID
COMP
= 72 kΩ
= 120 kΩ
= 180 kΩ
= +25°C, V
= −5 μA
X
= 1.2 V, R
= 0 V, SWFB = 0 V
− V
− (1 + V
COMP
RPM
Rev. SpA | Page 6 of 43
RT
TRDET#sink
(V
RAMP
(R
TRDET#
VID
T
RPMTH
VID
T
= 215 kΩ
) formula
= 1.2000 V
= 60 μA
) formula
)
= VCC
T
= 4mA
= 125 kΩ, V
CLK
CLK
time earlier
time earlier
VID
= 1.5000 V
Min
3.5
1.0
1.125
0.9
0.3
1100
700
500
0.9
1
−1
−600
20
0.7
Typ
4
1.25
1
1257
800
550
1
VIN
±3
−9
±3
350
400
450
-450
-500
-600
30
35
−3
600
Max
4.5
1.15
1.375
1.1
3
1400
900
600
1.1
100
+1
300
5
+200
50
0.3
Units
-
V
V
V
MHz
kHz
kHz
kHz
V
V
μA
μA
mV
μA
mV
mV
mV
mV
mV
mV
mV
mV
μA
mV
kΩ
mV
ns
V
V