BCM400X500Y1K8A3Z Datasheet, PDF (6/25 Pages) Vicor Corporation – Fixed Ratio DC-DC Converter

BCM400x500y1K8A3z
Electrical Specifications (Cont.)
Specifications apply over all line and load conditions, unless otherwise noted; Boldface specifications apply over the temperature range of -40°C ≤ T_INTERNAL
≤ 125°C (T-Grade); All other specifications are at T_INTERNAL = 25ºC unless otherwise noted.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
General Powetrain PRIMARY to SECONDARY Specification (Forward Direction) Cont.
Effective Primary Capacitance
(Internal)
Effective Secondary Capacitance
(Internal)
Effective Secondary Output
Capacitance (External)
Effective Secondary Output
Capacitance (External)
C_{PRI_INT}
Effective Value at 400 V_{PRI_DC}
C_{SEC_INT}
Effective Value at 50 V_{SEC_DC}
C_{SEC_OUT_EXT}
C_{SEC_OUT_AEXT}
Excessive capacitance may drive module into SC
protection
C_{SEC_OUT_AEXT} Max = N * 0.5 * C_{SEC_OUT_EXT MAX}, where
N = the number of units in parallel
0.37
µF
25.6
µF
100
µF
Protection PRIMARY to SECONDARY (Forward Direction)
Auto Restart Time
Primary Overvoltage Lockout
Threshold
Primary Overvoltage Recovery
Threshold
Primary Overvoltage Lockout
Hysteresis
Primary Overvoltage Lockout
Response Time
Primary Undervoltage Lockout
Threshold
Primary Undervoltage Recovery
Threshold
Primary Undervoltage Lockout
Hysteresis
Primary Undervoltage Lockout
Response Time
Startup into a persistent fault condition. Non-Latching
t_{AUTO_RESTART fault detection given VPRI_DC > VPRI_UVLO+}
292.5
357.5
ms
V_{PRI_OVLO+}
420
436
450
V
V_{PRI_OVLO-}
405
426
440
V
V_{PRI_OVLO_HYST}
10
V
t_{PRI_OVLO}
100
µs
V_{PRI_UVLO-}
200
226
250
V
V_{PRI_UVLO+}
225
244
259
V
V_{PRI_UVLO_HYST}
15
V
t_{PRI_UVLO}
100
µs
From V_{PRI_DC} = V_{PRI_UVLO+} to powertrain active, EN
Primary Undervoltage Startup Delay t_{PRI_UVLO+_DELAY} floating, (i.e One time Startup delay form application
20
ms
of V_{PRI_DC} to V_{SEC_DC})
From powertrain active. Fast Current limit protection
Primary Soft-Start Time
t_{PRI_SOFT-START disabled during Soft-Start}
1
ms
Secondary Output Overcurrent Trip
Threshold
I_{SEC_OUT_OCP}
37.5
47
59
A
Secondary Output Overcurrent
Response Time Constant
t_{SEC_OUT_OCP} Effective internal RC filter
3.6
ms
Secondary Output Short Circuit
Protection Trip Threshold
I_{SEC_OUT_SCP}
52
A
Secondary Output Short Circuit
Protection Response Time
t_{SEC_OUT_SCP}
1
µs
Overtemperature Shutdown
Threshold
t_OTP+
Temperature sensor located inside controller IC
125
°C
Overtemperature Recovery
Threshold
t_OTP–
105
110
115
°C
Undertemperature Shutdown
Threshold
Temperature sensor located inside controller IC;
t_UTP
Protection not available for M-Grade units.
-45
°C
Startup into a persistent fault condition. Non-Latching
Undertemperature Restart Time
t_{UTP_RESTART}
fault detection given V_{PRI_DC} > V_{PRI_UVLO+}
3
s
BCM^® Bus Converter
Page 6 of 25
Rev 1.4
07/2015
vicorpower.com
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