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Design Specification Summary
1-5
Introduction
1.4 Design Specification Summary
This section summarizes the design requirements of the EVM converters.
Although every attempt was made to accurately describe the performance of
the EVM converters and the TPS56xx controllers, in case of conflicts, the
TPS56xx data sheet takes precedence over this document.
The TPS56xx family of controllers provides the necessary regulation
functions. In addition to a reference voltage accuracy of ±1% over the full
operating temperature range, the controller has remote sense inputs to
provide a precisely regulated output voltage. The controller also provides
undervoltage lock-out, overload protection, overvoltage protection, and
overtemperature protection. The controller has a logic level INHIBIT input to
control the converter turn-on and turn-off and a power good output to indicate
output voltage status. Undervoltage lock-out prevents operation of the power
supply when the 12 Vdc input voltage is not sufficient for proper operation.
Overload protection protects the power supply from accidental overloads or
short circuits. Overvoltage protection prevents damage to the load in the event
of an internal power supply failure or presence of high voltages on the output
from an external condition. Both overvoltage and overcurrent cause a latched
shutdown. Both power MOSFETs are driven to an OFF state. Recovery from
shutdown requires removal of the 12 V control input supply for reset. Table 1–2
lists the operating specifications of the EVM converters.
Table 1–2.EVM Converter Operating Specifications
Specification Min Typ Max Units
Power input voltage range 4.5 6 V
Control input voltage range 10.8 13.2 V
Static voltage tolerance
†
SLVP111 (3.3 V)
SLVP112 (2.5 V)
SLVP113 (1.8 V)
SLVP114 (1.5 V)
3.27
2.47
1.78
1.48
3.30
2.50
1.80
1.50
3.33
2.53
1.82
1.52
V
V
V
Line regulation
‡
± 0.05% ± 0.1%
Load regulation
§
± 0.2% ± 0.4%
Transient response
¶
± 100
50
mV pk
µsec
Output current range
#
06A
Current limit
#
10 A
Operatin
g
fre
q
uenc
y
k
O erating
frequency
SLVP111 (3.3 V) 135 kHz
()
SLVP112 (2.5 V) 225 kHz
SLVP113 (1.8 V)
SLVP114 (1 8 V)
295
360
kHz
kH
S
LVP114
(
1.8 V
)
360 kHz