Absolute Maximum Ratings
–
Exceeding these parameters may result in permanent damage to the product.
Pins
BUS+ to BUS-
BUS+ to BUS-
BUS+/BUS- to Shield Plane
QPI+ to QPI-
Package
Package
Package
Package
Package
Package
Package
All Pins
Parameter
Input voltage
Input voltage
BUS inputs to Shield Hipot
Input to output current
Power dissipation
Operating temperature
Thermal resistance
Junction temperature
Thermal resistance
Storage temperature
Re-flow temperature
ESD
20 second exposure @
HBM
Notes
Continuous
100ms transient
Per test std.
Continuous @ 25°C
V
BUS
= 48 V, I
BUS
= 12 Adc, 25°C
PCB to QPI Interface
Free air
Internal @ Pdmax and 15°C/W
PCB layout
(see Figs. 9 & 10)
1
-40
-40
Min
-0.5
-0.5
Max
80
100
+/-1500
12
4.0
100
50
160
15
125
212
+/-2
Units
Vdc
Vdc
Vdc
Adc
W
°C
°C/W
°C
°C/W
°C
°C
kV
Note 1
-
Refer to Figures 9 & 10 for PCB layout guidelines to achieve this thermal resistance when re-flowed onto the PCB.
Electrical Characteristics
–
Parameter limits apply over the operating temp. range unless otherwise noted.
Parameter
BUS+ to BUS- input range
BUS+ to QPI+ voltage drop
BUS- to QPI- voltage drop
Common-mode insertion loss
Differential-mode insertion loss
Input bias current at 80 Volts
Notes
Measured at 10 A
2
Min
30
Typ
-300
20
45
85
17
Max
80
Units
Vdc
mVdc
mVdc
dB
dB
mA
Measured at 10 A
2
Measured at 10 A
2
V
BUS
= 48 V frequency = 500 kHz
V
BUS
= 48 V frequency = 500 kHz
Input current from BUS+ to BUS-
Note 2
-
Refer to Figure 5 for current derating curve.
THERM 1
9
8
QPI+
7
6
SHIELD
5
4
THERM 2
11
12
13
BUS+
14
15
16
BUS-
2
1
QPI-1: (bottom view)
BUS+
BUS-
QPI+
QPI-
SHIELD
THERM 1
THERM 2
12,13,14
1,15,16
7,8,9
2,3,4
5,6
10
11
10
3
QPI-
Pad Designations
Pad Description
BUS-
BUS+
QPI-
QPI+
Negative bus potential
Positive bus voltage
Negative input to the converter
Positive input to the converter
THERM1
THERM2
Shield
Internal connection must be electrically
floating but maximize copper landing
for heat sinking.
The shield connects to the converter
shield and Y-capacitor common point
through RY.
QPI-1L Data Sheet Rev. 2.0 Page 2 of 8
Picor Corporation • www.picorpower.com
VICOR [ VICOR CORPORATION ]
