PRD48BF480T400A00 Datasheet, PDF (3/22 Pages) Vicor Corporation – PRM™ Regulator

Not Recommended for New Designs
PRM48BF480T400A00
(Formerly VIP0001TFJ)
3.0 SIGNAL CHARACTERISTICS
Specifications apply over all line and load conditions, T_J = 25 ºC and Output Voltage from 20V to 55V, unless otherwise noted.
Boldface specifications apply over the temperature range of -40 ºC < T_J < 125 ºC (T-grade).
Primary Control
PC
• The PC pin enables and disables the PRM
• In PRM array configurations, PC pins should be connected in order to synchronize startup.
• It is a weak pull-down during any fault mode excluding short circuit. PC is a strong pull-down to SG if a short circuit fault is latched.
Signal Type
State
Attribute
Symbol
Conditions / Notes
Analog Output
Digital Input / Output
Digital Output [Short Circuit Fault]
Digital Output [All other Faults]
Regular
Operation
Startup
Startup
Standby
Fault
Fault
PC Voltage
PC Available Current
PC Source Current
Minimum Time to Start
PC Enable Threshold
PC Disable Threshold
PC Resistance (External)
PC Sink Current to SG
PC Sink Current to ~1V
V_PC
I_{PC_OP}
I_{PC_EN}
T_OFF
V_{PC_EN}
V_{PC_DIS}
R_{PC_EXT}
I_{PC_SC}
I_{PC_FAULT}
After T_OFF
Section 5.0
Resistance to SG required to disable the PRM
Short circuit, PC voltage 1 V or above
Tempature, over- and undervoltage, overcurrent
Min
Typ
Max
Unit
4.7
5
5.3
V
1.8
mA
90
A
10.0
18.0
30.0
ms
2.50
3.20
V
1.75
2.40
V
300
Ω
25
mA
10

Voltage Source
VS
• Intended to power feedback components and/or auxiliary circuits.
• 9 V, 5mA regulated voltage source
• With > 5% output load, VS ripple typically 100mV
Signal Type
State
Attribute
VS Voltage
Regular VS Available Current
Analog Output
Operation
VS Voltage Ripple
Transition
VS Capacitance (External)
VS Fault Response Time
Symbol
V_VS
I_VS
V_{VS_PP}
C_{VS_EXT}
T_{FR_VS}
Conditions / Notes
Iout = 0A, Cvs_ext=0. Maximum specification
includes powertrain operation in burst mode.
From fault recognition to VS = 1.5 V
Min
Typ
Max
Unit
8.55
9.00
9.45
V
5
mA
100
400
mV
0.04
F
30
s
Reference Enable
RE
• RE signals successful startup and a powertrain that is ready for operation
• Regulated, delayed voltage source intended to power the feedback circuit voltage reference and current monitor
Signal Type
State
Attribute
Symbol
Conditions / Notes
Analog Output
Regular
Operation
Transition
RE Voltage
RE Available Current
RE Regulation
RE Voltage Ripple
PC to RE Delay
RE Capacitance (External)
VS to RE Delay
V_RE
I_RE
%_RE
V_{RE_PP}
T_{PC_RE}
C_{RE_EXT}
T_{VS_RE}
across load and temperature
in burst mode
Fault detected
VS = 8.1 V to RE high, V_IN > V_{IN_UVLO-}
Min
Typ
Max
Unit
3.0
3.3
3.6
V
8.0
mA
2.5
%
100
mV
100
s
0.1
F
1
ms
Control Node
PR
• Modulator control node input
• Sinks constant current when externally driven in active range
• Sources current when pulled below active range
Signal Type
State
Attribute
PR Voltage Active Range
Analog Input
Regular
Operation
PR Source Current
PR Sink Current
PR Resistance to SG
Symbol
V_PR
I_PR
I_{PR_Low}
R_PR
V_PR  0.79V
V_PR  0.79V
Conditions / Notes
Min
Typ
Max
Unit
0.79
7.40
V
2
mA
250
500
750
A
93.3
kΩ
Current Feedback
IF
• A voltage proportional to the PRM output current must be supplied externally to the IF pin in order for the device to properly protect overcurrent events and to enable output current limit (clamp)
• Overcurrent protection trip will cause instantaneous powertrain disable, latched after T_BLNK
Signal Type
State
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
Analog Input
Regular
Operation
Current Limit (clamp) Threshold
Overcurrent Protection Threshold
IF Input Impedance
Current Limit Bandwidth
V_{IF_IL}
V_{IF_OC}
R_IF
BW_IL
V_IN = 45 V; T_J = 25 °C
Not Production Tested; Guaranted by Design;
T_J = 25 °C
1.90
2.00
2.10
2.58
2.69
2.80
V
2.11
2.13
2.15
kΩ
2
kHz
V•I CHIP CORP. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200
Rev. 1.2
07 / 2012
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