PI3318-20-LGIZ Datasheet, PDF (10/42 Pages) Vicor Corporation – 8 V to 36 Vin Cool-Power ZVS Buck Regulator Family

PI33xx-x0
PI3318-x0-LGIZ (1.8 V_OUT) Electrical Characteristics
Unless otherwise specified: -55°C < T_J < 125°C, V_IN =24 V, L1 = 155 nH ^[1]
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Switching Frequency
Fault Restart Delay
f_S
[6]
t_{FR_DLY}
Timing
600
kHz
30
ms
Synchronization Frequency
Range
SYNCI Threshold
∆f_SYNCI
V_SYNCI
Sync In (SYNCI)
Relative to set switching frequency ^[3]
50
110
%
2.5
V
SYNCO High
SYNCO Low
SYNCO Rise Time
SYNCO Fall Time
V_{SYNCO_HI}
V_{SYNCO_LO}
t_{SYNCO_RT}
t_{SYNCO_FT}
Sync Out (SYNCO)
Source 1 mA
Sink 1 mA
20 pF load
20 pF load
4.5
V
0.5
V
10
ns
10
ns
TRK Active Input Range
TRK Max Output Voltage
TRK Disable Threshold
Charge Current (Soft – Start)
Discharge Current (Fault)
Soft-Start Time
Soft Start And Tracking
V_TRK
Internal reference tracking range
V_{TRK_OV}
I_TRK
I_{TRK_DIS}
t_SS
C_TRK = 0 µF
0
1.04
V
1.2
V
20
40
60
mV
-70
-50
-30
μA
6.8
mA
2.2
ms
High Threshold
Low Threshold
Threshold Hysteresis
Enable Pull-Up Voltage
(floating, unfaulted)
Enable Pull-Down Voltage
(floating, faulted)
Source Current
Sink Current
V_{EN_HI}
V_{EN_LO}
V_{EN_HYS}
V_{EN_PU}
V_{EN_PD}
I_{EN_SO}
I_{EN_SK}
Enable
With positive logic EN polarity
With negative logic EN polarity
With positive logic EN polarity
With negative logic EN polarity
0.9
1
1.1
V
0.7
0.8
0.9
V
100
200
300
mV
2
V
0
V
-50
μA
50
μA
[1] _{All parameters reflect regulator and inductor system performance. Measurements were made using a standard PI33xx-x0 evaluation board with 3x4”}
dimensions and 4 layer, 2 oz copper. Refer to inductor pairing table within Application Description section for specific inductor manufacturer and value.
[2] _{Regulator is assured to meet performance specifications by design, test correlation, characterization, and/or statistical process control.}
[3] _{Output current capability may be limited and other performance may vary from electrical characteristics when switching frequency or VOUT is modified.}
[4] _{Refer to Output Ripple plots.}
[5] _{Refer to Load Current vs. Ambient Temperature curves.}
[6] _{Refer to Switching Frequency vs. Load current curves.}
Cool-Power®
Page 10 of 42
Rev 2.0
02/2016
vicorpower.com
800 927.9474