PI3749-00-EVAL1 Datasheet, PDF (9/26 Pages) Vicor Corporation – Cool-Power® ZVS Switching Regulators

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
1.7
V
TRK Disable Threshold
20
40
70
mV
TRK Internal Capacitance
0.047
µF
Soft Start Charge Current
30
50
70
µA
Soft Start Discharge Current
Soft Start Time
V_TRK = 0.5V
t_SS
Ext C_SS = 0μF
Enable
8.5
mA
1.6
ms
Enable High Threshold
Enable Low Threshold
Enable Threshold Hysteresis
Enable Pin Bias Current
Enable Pull-Up Voltage
EN_IH
EN_IL
EN_HYS
V_EN = 0V or V_EN = 2V
Floating
0.9
1
1.1
V
0.7
0.8
0.9
V
100
200
300
mV
-50
µA
2.0
V
Fault Restart Delay Time
t_{FR_DLY}
Digital Signals
30
ms
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
3.1
V
2.2
V
V_DR - 0.5
V_DR
V
0.5
V
10
µA
0.4
V
1.41
1.45
1.48
V
PGD EAIN Low Fall
1.36
1.41
1.46
V
PGD EAIN Threshold Hysteresis
35
mV
PGD EAIN High
1.94
2.04
2.14
V
I²C Digital Signals (PI3749-20 only)
I²C™ Address High Threshold
V_ADRx-HI
3.872 4.59
V
I²C Address Mid Threshold
V_ADRx-MID
1.452
3.752
V
I²C Address Low Threshold
I²C Address Resistance,
Within Mid Thresholds
I²C Address Resistance,
Outside Mid Thresholds
V_ADRx-LOW
R_ADRx-MID
R_ADRx-MID
Resistance to 2.5V, when ADRx pin voltage
within V_{ADRx_MID}
Resistance to 2.5V, when ADRx pin voltage
outside range of V_{ADRx_MID}
0.51 1.072
V
10
V
200
V
SCL, SDA In High
V_{SER_IH}
2.1
V
SCL, SDA In Low
V_{SER_IL}
1.5
V
SDA Out Low
V_{SER_OL} Sinking up to 3mA
0.4
V
SCL, SDA Pull-Down Current
I_{SER_I}
Weak pull-down current to SGND
10
V
[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.}
Cool-Power^® ZVS Switching Regulators
Page 9 of 26
Rev 1.8
03/2017
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