DC/DC regulators
Input 3.0 - 3.6V
Output up to 12A/21.6W
Key Features
Surface mountable
Low profi le, max 8.5mm (0.33 in)
High effi ciency
Low weight
Designed for Environment, DfE
Lead-free / Bromine-free
Robust design
PMA 4000 Series
E
The PMA series of DC/DC regulators (POL) are
intended to be used as local distributed power sources
in distributed power architecture level 4. The PMA
series use a ceramic substrate with fine-pitch compo-
nents technology and a high degree of silicon integra-
tion. Together with the electrical design using low
Rds-On MOSFET, this provides excellent thermal
management, high reliability and high efficiency. The
high efficiency makes it possible to operate over a
wide temperature range, without adding any external
dissipator. At forced convection cooling >1 m/s
(200 lfm), the PMA typically delivers full power up to
+80
C ambient temperature.
The high reliability and the low profile of the PMA
series makes them particularly suited for the com-
munications equipment of today and tomorrow and
applications with board spacing down to 15 mm (0.6
in). The flat case top enables pick-and-place handling
and provides a surface for attachment to cooling sur-
faces in areas with limited air flow.
These products are manufactured using the most
advanced technologies and material to comply with
environmental requirements. Designed to meet high
reliability requirements of systems manufacturers, the
PMA responds to world-class specifications.
Ericsson Power Modules is an ISO 9001/14001 certi-
fied supplier.
2
PMA 4000 Series
EN/LZT 146 012 R1A Ericsson Power Modules, June 2003
Characteristics
Conditions
min typ max
Unit
V
I
Input voltage range
3.0
3.3
3.6
Vdc
V
Ioff
Turn-off input voltage
Ramping from higher
voltage
2.3
Vdc
V
Ion
Turn-on input voltage
Ramping from lower
voltage
2.4
Vdc
C
I
Input capacitance
245
F
P
Ii
Input idling power
I
o
= 0
570
mW
P
RC
Input stand-by power
(RC active)
Non operation
15
mW
V
I
ac
Input ripple
20Hz...5MHz, I
o
max
120
1)
mV
Characteristics
min max
Unit
T
C
Maximum Operating Case Temperature
-45
+110
C
T
S
Storage temperature
-55
+125
C
V
I
Input voltage
-0.3
+4.0
Vdc
RC
Low level
-0.3
0.3
Vdc
Select
Low level, positive logic
-0.3
0.3
Vdc
Sync in
High level, pulse voltage
TBD
TBD
Vdc
Sync out
High level, pulse voltage
TBD
TBD
Vdc
Sync out
Pulse time
TBD
TBD
s
Input
Note:
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as
no destruction limits, are normally tested with one parameter at a time exceeding the limits of Output data or Electrical Characteristics. If
exposed to stress above these limits, function and performance may degrade in an unspecifi ed manner.
Absolute Maximum Ratings
Characteristics
Random Vibration
IEC 68-2-34E
d
Frequency
Acceleration density
10 ... 500 Hz
0.5 g
2
/Hz
Vibration
(Sinusoidal)
IEC 68-2-6 F
c
Frequency range
Acceleration amplitude
Number of cycles
10 ... 500 Hz
10 g or displacement
amplitude 0.75 mm
10 in each axis
Mechanical shock
(half sinus)
IEC 68-2-27 E
a
Peak acceleration
Duration
200 g
3 ms
Temperature
cycling
IEC 68-2-14 N
a
Temperature
Number of cycles
-40 ... +125 C
500
Accelerated damp
heat
IEC 68-2-3 C
a
with bias
Temperature
Humidity
Duration
+85 C
85 % RH
1000 hours
Solderability
IEC 68-2-54
Solde immersion depth
Time for onset of wetting
Wetting force
2 mm
< 2.5 s
> 200 mN/m
Resistance to
cleaning solvents
Moulded package
Laser marking
Fluid
All commercially avail-
able
Cold (in operation)
IEC 68-2-1, test A
a
Temperature
-45 C
Storage
IEC 68-2-2 B
a
Temperature
Duration
+125 C
1000 h
Environmental Characteristics
Safety
The PMA 4000 series DC/DC regulators
are designed in accordance with safety
standards IEC/EN/UL 60 950, Safety of
Information Technology Equipment.
The DC/DC regulator should be installed
in the end-use equipment, in accordance
with the requirements of the ultimate
application. The input source must be
isolated by minimum Reinforced or
Double insulation from the primary
circuit in accordance with IEC/EN/UL
60 950. If the input voltage to the DC/
DC regulator is SELV (Safety Extra Low
Voltage) then the output remains SELV
under normal and abnormal operating
conditions.
It is recommended that a slow blow fuse
with a rating of 25A be used at the input
of each DC/DC regulator. If a fault occurs
in the regulator that imposes a short
circuit on the input source, this fuse will
provide the following functions:
Isolate the faulty DC/DC regulator
from the input power source not to
affect the operation of other parts of
the system.
Protect the distribution wiring from
excessive current and power loss thus
preventing hazardous overheating.
The fl ammability rating for all
construction parts of the DC/DC
regulator meets UL 94V-0.
TC = -30C...+90C, V
I
= 3.0...3.6V unless otherwise specifi ed
Typ values specifi ed at: T
C
= +25C, V
I
nom. V
I
nom = 3.3V, I
o
max = 12A
1) Measured with L = 1.6 H and 10 F at the input.
3
PMA 4000 Series
EN/LZT 146 012 R1A Ericsson Power Modules, June 2003
Connections
Fundamental Circuit Diagram
Weight
PMA 4000 SF 12g
Case
Material: Semiconductor grade epoxy.
Coeffi cient of thermal expansion (CTE)
is typ. 10 ppm/C
Mechanical Data
Pin
Designation
Function
1-2
+ Out
Output voltage
3-4
Gnd
Ground
5-6
+ In
Input voltage
7*
Sync in
No function, released in next rev.
8*
Sync sel
No function, released in next rev.
9*
Sync out
No function, released in next rev.
10
RC
Remote control, To turn-on and turn-
off the regulator
11
Select
Select pin for pos/neg logic
12
Vadj
Output voltage adjust
13
+S
Remote sensing
14
NC
Not connected
Tolerances unless specified
0,25 [0.01]
Pin true position within
0,25 [0.01] with reference
to package center.
Coplanarity 0,1 [0.004] max
Standoff 0,3 0,1 [0.012 0.004]
Lead thickness 0,3 [0.012]
E
( 2,5 [0.1] )
30,4 [1.20]
28,7 [1.13]
18,9 [0.75]
17,2 [0.68]
20
[0.79]
35,2 0,5 [1.39 0.02]
1
1,5 [0.059] (6x)
2,1 [0.083] (6x)
8,35
0,1
[0.334
0.004]
1,8 [0.071]
0,7 [0.027] (4x)
1,2 [0.047] (8x)
1 [0.039] (7x)
3
7
12,3
[0.484]
2,8
[0.110]
(
4x)
2,2
[0.087]
(
7x)
7,7
[0.303]
7,55
[0.297]
2
[
0.079]
(6x)
32,5 [1.28]
3,5 [0.138] (14x)
1,7
[0.067]
(8x)
1
dimensions in mm [in]
Diagram not available at time of printing
* Do not connect
Pins
Material: Copper
Plating: fi rst plating Nickel (Ni)
second plating (outer) Palladium (Pd)
4
PMA 4000 Series
EN/LZT 146 012 R1A Ericsson Power Modules, June 2003
Characteristics
Conditions
Output
Unit
min
typ
max
V
Oi
Output voltage initial setting
and accuracy
T
C
= +25C, V
I
nom, I
O
max
1.48
1.50
1.52
V
Output adjust range
T
C
= +25C, V
I
nom, I
O
max
1.35
1.65
V
V
O
Output voltage tolerance band
I
O
= 0.1...1.0 x I
O
max, V
I
= 3.0...3.6V
1.455
1.545
V
Idling voltage
I
O
= 0
1.47
1.53
V
Line regulation
V
I
min ... V
I
max, I
O
max
2
mV
Load regulation
I
O
= 0.01...1.0 x I
O
max, V
I
nom
4
mV
V
tr
Load transient
voltage deviation
Loadstep = 0.25 ... 0.75 x I
O
max
100
mV
t
tr
Load transient recovery time
Loadstep = 0.25 ... 0.75 x I
O
max
10
s
T
coeff
Temperature coeffi cient
T
C
= 40 ... 90C, I
O
max
< 0.1
mV/C
t
r
Ramp-up time
0.1...0.9 x V
O
, I
O
= 0.1 ...1.0 x I
O
max, V
I
nom 5.5
ms
t
s
Start-up time
From V
I
connected to V
O
= 0.9 x V
OI
,
I
O
= 0.1 ...1.0 x I
O
max, V
I
nom
7.0
ms
t
RC
RC shut-down time to V
O
x 0.1
I
O
= I
O
max, V
I
nom
0.2
ms
t
RC
RC start-up time to V
O
x 0.9
I
O
= I
O
max, V
I
nom
8
ms
I
O
Output current
0
12
A
P
O
max
Max output power
At V
O
= V
Onom
18
W
I
lim
Current limit threshold
T
C
< T
C
max
15
20
25
A
V
Oac
Output ripple
20Hz ... 5MHz, I
O
max
22
50
mV
p-p
T
C
= 30...+90C, V
I
= 3.0 ...3.6V unless otherwise specifi ed.
Typ values specifi ed at: T
C
= +25C and V
I
nom. V
I
nom = 3.3V, I
O
max = 12A. Note: +Sense must be connected to +Out
PMA 4118H Output
Miscellaneous
Characteristics
Conditions
min
typ
max
Unit
Effi ciency - 50% load
I
O
= 0.5 x I
O
max
91
%
Effi ciency - 100% load
I
O
= I
O
max
85.5
88
%
P
d
Power Dissipation
I
O
= I
O
max
2.4
3.1
W
Fo
Switching frequency
I
O
= 0 ... 1.0 x I
O
max
250
300
340
kHz
I
sense
Remote sense current
8
mA
Static input current
V
I
= 3.0V, I
O
= I
O
max, T
C
= 25C
6.8
A
MTBF
Predicted reliability
T
C
= 40C
10
million
hrs
T
C
= 30...+90C, V
I
= 3.0 ...3.6V unless otherwise specifi ed.
Typ values specifi ed at: T
C
= +25C and V
I
nom. V
I
nom = 3.3V, I
O
max = 12A. Note: +Sense must be connected to +Out
5
PMA 4000 Series
EN/LZT 146 012 R1A Ericsson Power Modules, June 2003
Effi ciency
Output Characteristic
Output Current Derating
Power Dissipation
PMA 4118H Typical Characteristics
Start-Up
Turn-Off
Start-up at I
O
=12A resistive load at T
C
=+25 C,
Vin=3.3 V. Start enabled by connecting V
in
.
Top trace: input voltage (2 V/div.).
Bottom trace: output voltage (0.5 V/div.).
Time scale: 5 ms/div.
Output voltage vs. load current at T
C
=+25 C, Vin=3.3 V.
Available load current vs. ambient air temperature and
airfl ow at Vin=3.3 V. See conditions on page 9.
Effi ciency vs. load current and input voltage at T
C
=+25 C
0
3
6
9
12
15
70
75
80
85
90
95
[A]
[%]
3.0 V
3.3 V
3.6 V
0
20
40
60
80
100
0
3
6
9
12
[C]
[A]
3.0 m/s (600 lfm)
1.5 m/s (300 lfm)
1.0 m/s (200 lfm)
0.5 m/s (100 lfm)
Nat. Conv.
0
3
6
9
12
15
1.40
1.45
1.50
1.55
1.60
[A]
[V]
0
3
6
9
12
15
0
1
2
3
4
[A]
[W]
3.0 V
3.3 V
3.6 V
Dissipated power vs. load current and input voltage at
T
C
=+25 C
Turn-off at I
O
=12A resistive load at T
C
=+25 C,
Vin=3.3 V. Turn-off enabled by disconnecting V
in
.
Top trace: input voltage (2 V/div.).
Bottom trace: output voltage (0.5 V/div.).
Time scale: 0.5 ms/div.
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