Vicor PFC MegaPAC-HPEL Power Factor Corrected AC-DC Switchers - Manual (Page 7)

UG:119 vicorpower.com Applications Engineering: 800 927.9474 Page 7
module increases, the preload removes itself from the circuit. QPACs, using the VI-200
module, have an optional DC OK TTL signal. All QPACs have overcurrent protection with
automatic recovery when the overcurrent condition is removed. Overvoltage Protection
(OVP) and Overtemperature Limiting (OTL) are available. Please note that for the
QPAC (L) the output voltage from either output terminal to chassis should not
exceed 400 Vdc, or peak.
DualQPAC (LD)
The DualQPAC output assembly consists of two VI-J00 DC-DC converters that provide
two isolated output voltages. DualQPACs can provide up to 100 Watts of output power
from each output. The DualQPACs are fused with a PC-Tron, DC-rated, fast-acting
fuse. An active preload ensures the DC-DC converter operates in its highest noise
performance range. OVP and OTL is not available. Please note that for the QPAC (L)
the output voltage from either output terminal to chassis should not exceed
400 Vdc, or peak. For detailed pin out description, refer to Page 10.
JuniorQPAC (LJ)
The JuniorQPAC output assembly consists of a VI-J00 Vicor DC-DC converter that
converts the unregulated high voltage bus to the desired regulated output voltage. OVP
and OTL is not available. Please note that for the QPAC (L) the output voltage from
either output terminal to chassis should not exceed 400 Vdc, or peak.
FinQPAC (PZL)
The FinQPAC output assembly consists of a Maxi DC-DC converter that converts
the unregulated high voltage bus to the desired regulated output voltage. Each Maxi
module can provide up to 600 Watts of output power. Each FinQPAC occupies two slots
because it has an extra large heat sink attached to dissipate the heat generated by this
more powerful Maxi converter. It cannot be used in any other member of the MegaPAC
Family. FinQPACs have overcurrent protection with automatic recovery when the
overcurrent condition is removed. Overvoltage Protection (OVP) and Overtemperature
Limiting (OTL) are available. Please note that for the FinQPAC (PZL) the output
voltage from either output terminal to chassis should not exceed 400 Vdc, or peak.
VI-J00 VI-J00
M2 M1
M1
M2
VI-J00
+
_ Maxi
DualPAC
JuniorQPAC
FinQPAC