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PI3749 Datasheet(PDF) 9 Page - Vicor Corporation

Part # PI3749
Description  16V to 34VIN, 12V to 28VOUT, 240W Cool-Power ZVS Buck-Boost
PDF  26 Pages
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Manufacturer  VICOR [Vicor Corporation]
Direct Link  http://www.vicorpower.com
Logo VICOR - Vicor Corporation

PI3749 Datasheet(HTML) 9 Page - Vicor Corporation

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Cool-Power® ZVS Switching Regulators
Rev 1.6
vicorpower.com
Page 9 of 26
09/2016
800 927.9474
PI3749-x0
Electrical Characteristics (Cont.)
Specifications apply for the conditions -40°C < TJ < 115°C, VIN = 16V - 34V, VOUT = 24V, LEXT = 480nH[4], external CIN = COUT = 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
.047
µF
Soft Start Charge Current
30
50
70
µA
Soft Start Discharge Current
VTRK = 0.5V
8.5
mA
Soft Start Time
tSS
Ext CSS = 0µF
1.6
msec
Enable
Enable High Threshold
ENIH
0.9
1
1.1
V
Enable Low Threshold
ENIL
0.7
0.8
0.9
V
Enable Threshold Hysteresis
ENHYS
100
200
300
mV
Enable Pin Bias Current
VEN = 0V or VEN = 2V
-50
µA
Enable Pull-up Voltage
Floating
2.0
V
Fault Restart Delay Time
tFR_DLY
30
msec
Digital Signals
SYNCI Threshold Rising
VDR = 5.1V
3.1
V
SYNCI Threshold Falling
VDR = 5.1V
2.2
V
SYNCO High
SYNCOOH
VDR - 0.5
VDR
V
SYNCO Low
SYNCOOL
ISYNCOUT = 1mA
0.5
V
PGD High Leakage
PGDILH
VPGD = VDR
10
µA
PGD Output Low
PGDOL
IPGD = 4mA
0.4
V
PGD EAIN Low Rise
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
VADRx-HI
3.872
4.59
V
I2C Address mid threshold
VADRx-MID
1.452
3.752
V
I2C Address low threshold
VADRx-LOW
0.51
1.072
V
I2C Address resistance,
within mid thresholds
RADRx-MID
Resistance to 2.5V, when ADRx pin voltage
within VADRx_MID
10
V
I2C Address resistance,
outside mid thresholds
RADRx-MID
Resistance to 2.5V, when ADRx pin voltage
outside range of VADRx_MID
200
V
SCL, SDA in high
VSER_IH
2.1
V
SCL, SDA in low
VSER_IL
1.5
V
SDA out low
VSER_OL
Sinking up to 3mA
0.4
V
SCL, SDA pull-down current
ISER_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.



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