E
5
Technical Specification
EN/LZT 146 420 R3A March 2014
© Ericsson AB
PKB 4000A series Direct Converters
Input 36-72 V, Output up to 30 A / 125 W
3.3V, 30A /99W Electrical Specification
PKB 4910A PI
TP1 = -30 to +90ºC, VI = 36 to 72 V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI= 53 VI max IO, unless otherwise specified under Conditions.
Additional Cin = 33 µF. See Operating Information section for selection of capacitor types.
Characteristics
Conditions
min
36
typ
max
Unit
V
VI
Input voltage range
72
32
35
VIoff
VIon
CI
Turn-off input voltage
Turn-on input voltage
Internal input capacitance
Output power
Decreasing input voltage
Increasing input voltage
30
31
34
V
33
V
5.7
μF
W
PO
0
99
50 % of max IO
92.4
91.0
92.7
91.0
9.8
max IO
η
Efficiency
%
50 % of max IO, VI = 48 V
max IO, VI = 48 V
max IO
Pd
Pli
PRC
fs
Power Dissipation
Input idling power
Input standby power
Switching frequency
14
W
W
IO = 0 A, VI = 53 V
VI = 53 V (turned off with RC)
0-100 % of max IO
1.8
0.1
W
162
180
198
kHz
Output voltage initial setting and
accuracy
VOi
TP1 = +25°C, VI = 53 V, IO = 30 A
3.23
3.30
3.37
3.63
V
V
See operating information (see Note
1)
Output adjust range
2.64
3.2
Output voltage tolerance band
Line regulation
0-100 % of max IO
max IO
3.4
±10
±10
V
VO
±3
±5
mV
mV
Load regulation
VI = 53 V, 0-100 % of max IO
Load transient
voltage deviation
VI = 53 V, Load step 25-75-25 % of
max IO, di/dt = 1 A/μs
See Note 2
Vtr
ttr
±200
40
±350
mV
µs
Load transient recovery time
Ramp-up time
tr
8
ms
(from 10−90 % of VOi)
0-100 % of max IO
Start-up time
(from VI connection to 90 % of VOi)
ts
tf
12
ms
max IO
IO = 0 A
max IO
50
5
μs
s
VI shut-down fall time
(from VI off to 10 % of VO)
RC start-up time
12
ms
tRC
max IO
37
5
μs
s
RC shut-down fall time
(from RC off to 10 % of VO)
IO = 0 A
IO
Output current
0
30
A
Ilim
Isc
Current limit threshold
Short circuit current
TP1 < max TP1
40
45
A
TP1 = 25ºC, see Note 3
A
Cout
Recommended Capacitive Load TP1 = 25ºC, see Note 4
0
3000
120
µF
See ripple & noise section,
VOac
Output ripple & noise
max IO, VOi
60
mVp-p
V
TP1 = +25°C, VI = 53 V, 0-100 % of
max IO
OVP
Over voltage protection
3.8
4.3
4.8
Note 1: At trim-up, the minimum VIn/Vout ratio must be kept, i.e. 5 % trim up require VIn > 37.8 V
Note 2: 3000 uF; ESR value 5 mΩ
Note 3: Constant current Vo < 0.5 V
Note 4: See Operating Information Section
ERICSSON [ ERICSSON ]
