PI3749-X0 Datasheet, PDF (9/26 Pages) Vicor Corporation – 16V to 34VIN, 12V to 28VOUT, 240W Cool-Power ZVS Buck-Boost

PI3749-x0
Electrical Characteristics (Cont.)
Specifications apply for the conditions -40°C < T_J < 115°C, V_IN = 16V - 34V, V_OUT = 24V, L_EXT = 480nH^[4], external C_IN = C_OUT = 20µF,
unless otherwise noted.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Soft Start and Tracking Function
TRK Active Range
Nominal
0
TRK Disable Threshold
20
TRK Internal Capacitance
Soft Start Charge Current
30
Soft Start Discharge Current
Soft Start Time
V_TRK = 0.5V
t_SS
Ext C_SS = 0μF
Enable
Enable High Threshold
EN_IH
0.9
Enable Low Threshold
EN_IL
0.7
Enable Threshold Hysteresis
EN_HYS
100
Enable Pin Bias Current
V_EN = 0V or V_EN = 2V
Enable Pull-up Voltage
Floating
Fault Restart Delay Time
t_{FR_DLY}
Digital Signals
SYNCI Threshold Rising
SYNCI Threshold Falling
SYNCO High
SYNCO Low
PGD High Leakage
PGD Output Low
PGD EAIN Low Rise
SYNCO_OH
SYNCO_OL
PGD_ILH
PGD_OL
V_DR = 5.1V
V_DR = 5.1V
I_SYNCOUT = 1mA
V_PGD = V_DR
I_PGD = 4mA
V_DR - 0.5
1.41
PGD EAIN Low Fall
1.36
PGD EAIN Threshold Hysteresis
PGD EAIN High
1.94
I²C Digital Signals (PI3749-20 only)
I²C Address high threshold
V_ADRx-HI
3.872
I²C Address mid threshold
V_ADRx-MID
1.452
I²C Address low threshold
V_ADRx-LOW
I²C Address resistance,
within mid thresholds
R_ADRx-MID
Resistance to 2.5V, when ADRx pin voltage
within V_{ADRx_MID}
I²C Address resistance,
outside mid thresholds
R_ADRx-MID
Resistance to 2.5V, when ADRx pin voltage
outside range of V_{ADRx_MID}
SCL, SDA in high
V_{SER_IH}
2.1
SCL, SDA in low
V_{SER_IL}
SDA out low
V_{SER_OL} Sinking up to 3mA
SCL, SDA pull-down current
I_{SER_I}
Weak pull-down current to SGND
[4] _{See Inductor Pairing section.}
[5] _{Assured to meet performance specification by design, test correlation, characterization, and/or statistical process control.}
[6] _{Output current capability varies with input & output voltage. See performance curves in figures 15 - 17.}
40
.047
50
8.5
1.6
1
0.8
200
-50
2.0
30
3.1
2.2
1.45
1.41
35
2.04
4.59
0.51
10
200
1.7
V
70
mV
µF
70
µA
mA
msec
1.1
V
0.9
V
300
mV
µA
V
msec
V
V
V_DR
V
0.5
V
10
µA
0.4
V
1.48
V
1.46
V
mV
2.14
V
V
3.752
V
1.072
V
V
V
V
1.5
V
0.4
V
10
V
Cool-Power^® ZVS Switching Regulators
Page 9 of 26
Rev 1.6
09/2016
vicorpower.com
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