current limiting protection, and thermal shutdown.
F1
+Vin
Barrier
+Vout
Case ground
External
DC
Power
Source
Controller
and Power
NOTE: A minimum of 220μF
of capacitance is required
on the output to ensure
Cout stable operation. An ESR
equal to or less than 0.02Ω
is also required.
Trim
On/Off
Control
Open = On
Reference and
Error Amplifier
logic)
-Vin
-Vout
Figure 1. Simplified Schematic
Typical topology is shown. Some models may vary slightly.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_PAH-48-53Vout-450W.A10
Page 1 of 19
PAH 48, 53 Vout, 450W Series
Isolated, up to 450 Watt, Half-Brick DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
V
OUT
(Volts)
48
53
Input
Efficiency
Regulation (Max.)
Line
±0.6%
±0.6%
Root Model
➀
PAH-48/8.5-D48
PAH-53/8.5-D48
I
OUT
(Amps,
Max.)
8.5
8.5
Power
(Watts)
408
450.5
R/N (mV pk-pk)
Typ.
75
75
Max.
200
200
Load
±0.6%
±0.6%
V
IN
Nom.
(Volts)
48
48
Range
(Volts)
36-75
36-75
I
IN
, no
load
(mA)
80
80
I
IN
, full
load
(Amps)
9.98
9.98
Min.
➃
90%
90%
Typ.
94%
94%
Dimensions
(Inches)
2.3x2.4x0.5
2.3x2.4x0.5
➀
Please refer to the full model number structure for additional ordering part numbers and options.
➁
All specifications are typical at nominal line voltage and full load, +25ºC. unless otherwise noted.
See detailed specifications.
➂
Full power continuous output requires baseplate installation. Please refer to the derating curves.
➃
Minimum efficiency applies to all input voltages and working temperatures.
PART NUMBER STRUCTURE
PAH
-
53
/
8.5
-
D48 N Bx H Lx
-
C
Power Amplifier
Half-Brick
Nominal Output Voltage
Maximum Output Current
in Amps
Pin length option
Blank
= standard pin length 0.180 in. (4.57 mm)
L1
= 0.110 in. (2.79 mm)
➀
L2
= 0.145 in. (3.68 mm)
➀
Conformal coating (optional)
Blank
= no coating, standard
H
= Coating added
➀
Baseplate (installed on all models)
B
= Baseplate installed with standard M3-12.7 threaded rivet (typ. 4)
B1
= Baseplate installed with unthreaded insert
(see Mechanical section for details).
RoHS Hazardous Materials compliance
C =
RoHS-6 (no lead), standard, does not claim EU exemption 7b – lead in solder
Input Voltage Range:
D48 = 36-75 Volts (48V nominal)
On/Off Control Logic
N
= Negative logic
P
= Positive logic
➀
Special quantity order is required; samples available with standard pin length only.
➁
Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_PAH-48-53Vout-450W.A10
Page 2 of 19
PAH 48, 53 Vout, 450W Series
Isolated, up to 450 Watt, Half-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, PAH-48/8.5-D48
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Conditions
➀
Full power operation
Operating or non-operating, tested:
100 mS max. duration
Input to output
None, install external fuse
Power on or off, referred to -Vin
Minimum
0
0
Typical/Nominal
Maximum
80
100
2250
Units
Vdc
Vdc
Vdc
Vdc
Vdc
W
None
0
0
15
414.12
408
Current-limited, no damage,
Output Current
0
8.5
A
short-circuit protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
˚C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied nor recommended.
INPUT
Operating voltage range
Recommended External Fuse
Turn On/Start-up threshold tested at 1/2 load
Turn Off/Undervoltage lockout tested at 1/2 load
Reverse Polarity Protection
Internal Filter Type
Input current
Full Load Conditions
Low Line
Inrush Transient
Short Circuit Input Current
No Load Input Current
Shut-Down Mode Input Current
Reflected (back) ripple current
➁
36
Fast blow
Rising input voltage
Falling input voltage
None, install external fuse
33
31
48
34
32
None
Pi
9.98
13.31
0.2
60
80
5
40
90
91
2250
1500
1500
basic
10
3300
Certified to UL-60950-1, CSA-C22.2 No.60950-1,
IEC/60950-1, 2nd edition
Per Telcordia SR332, issue 1 class 3, ground
fixed, Tambient=+25˚C
Yes
1.6
160
Power On to Vout regulated
(100% resistive load)
Remote ON to 10% Vout (50% resistive load)
50-75-50% load step, settling time to within
±1% of Vout di/dt = 1 A/μSec
same as above
50
50
100
100
100
±400
±600
Hours x 10
6
KHz
mS
mS
μSec
mV
94
94
75
20
35
33
Vdc
A
Vdc
Vdc
Vdc
Vin = nominal
Vin = minimum
Iout = minimum, unit=ON
Measured at input with specified filter
Vin=48V, full load, +25˚C.
@ Vin=Min
Input to output, continuous
Input to Baseplate, continuous
Output to Baseplate, continuous
10.58
13.96
0.5
200
150
10
80
A
A
2
A -Sec.
mA
mA
mA
mA, pk-pk
%
%
Vdc
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
Mohm
pF
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation
FEATURES and OPTIONS
Remote On/Off Control
➂
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Current
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Current
Remote Sense Compliance
Pin open=OFF
open collector/drain
Pin open=ON
open collector/drain
Vsense=Vout–Vload, Sense connected at load
–0.1
2.5
1
3.5
0
1
0.8
15
2
15
1
2
5
V
V
mA
V
V
mA
% of Vout
www.murata-ps.com/support
MDC_PAH-48-53Vout-450W.A10
Page 3 of 19
PAH 48, 53 Vout, 450W Series
Isolated, up to 450 Watt, Half-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, PAH-48/8.5-D48 (CONT.)
OUTPUT
Total Output Power
Voltage
Nominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Minimum Load
Current Limit Inception
➃
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
➄
Line Regulation
Load Regulation
Ripple and Noise
Temperature Coefficient
External output capacitance required
➅
See Derating
No trim
At 50% load
User-adjustable
Via magnetic feedback
47.28
28.8(40%)
52.8
0
98% of Vnom., after warmup
Hiccup technique, autorecovery within ±1% of
Vout
Output shorted to ground, no damage
Current limiting
Vin=min. to max. Vout=nom.
Iout=min. to max. Vin=48V.
5 Hz- 20 MHz BW
At all outputs
Cap. ESR=<0.02Ω, Full resistive load
with baseplate; see mechanical drawing
±0.6
±0.6
200
1000
2.3 X 2.4 X 0.5
58.4x60.96x12.7
3.33
94.4
0.040/0.06
1.016/1.524
Copper alloy
100-299
10.31
Aluminum
-40
-40
-55
115
85
115
125
130
%
%
mV pk-pk
% of Vnom./°C
μF
Inches
mm
Ounces
Grams
Inches
mm
μ-inches
μ-inches
9
408
48
1.5
57.6
8.5
No minimum load
12
0.5
Continuous
414.12
48.72
55.2(15%)
70
8.5
15
5.0
W
Vdc
% of Vnom.
Vdc
Vdc
A
A
A
75
.02
220
MECHANICAL (Through Hole Models)
Outline Dimensions
Weight
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Case or Baseplate Material
Pins 1–4, 6–8/5,9
Nickel subplate
Gold overplate
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
Relative humidity, non-condensing
Altitude
(must derate -1%/1000 feet)
RoHS rating
See derating curves
Vin = Zero (no power)
Measured in center
External filter required
To +85°C
10
-500
-152
RoHS-6
˚C
˚C
˚C
˚C
Class
90
10,000
3048
%RH
feet
meters
125
B
Notes
➀
Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage
and full load. General conditions are +25˚ Celsius ambient temperature, near sea level altitude,
natural convection airflow. All models are tested and specified with external parallel 1 μF and 470
μF output capacitors. A 220μF external input capacitors is required. All capacitors are low-ESR
types wired close to the converter.
➁
Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering
is Cbus=220 μF/100V, Cin=470 μF/100V and Lbus=12 μH.
➂
The Remote On/Off Control is referred to -Vin.
➃
Over-current protection is non-latching with auto reovery (Hiccup)
➄
Regulation specifications describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme.
➅
Required minimum output capacitance is 220 μF, low ESR.
www.murata-ps.com/support
MDC_PAH-48-53Vout-450W.A10
Page 4 of 19
PAH 48, 53 Vout, 450W Series
Isolated, up to 450 Watt, Half-Brick DC-DC Converters
TYPICAL PERFORMANCE DATA, PAH-48/8.5-D48
Efficiency and Power Dissipation @ Ta = +25°C
98
96
94
92
90
88
86
84
82
80
78
76
74
72
0.5
1.5
2.5
78
72
66
60
54
48
42
36
30
24
18
12
6
0
7.5
8.5
Output Power Derating in Conduction Cooling (Cold Baseplate) Applications
(Vin=48V, Ambient Temperature <70°C)
475
450
Dissipation (Watts)
Output Power (Watts)
Efficiency (%)
V
IN
= 75V
V
IN
= 48V
V
IN
= 36V
Power Dissipation
V
IN
= 48V
425
400
375
3.5
4.5
Iout (Amps)
5.5
6.5
350
20
30
40
50
60
70
80
90
100
Cold Baseplate (Interior) Temperature
(°C)
Maximum Current Temperature Derating at sea level
(Vin=48V, transverse airflow, on 10˝ x 10˝ PCB with baseplate)
9
8
7
6
5
4
3
2
0.25 m/s (50 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
9
8
7
6
5
4
3
2
Maximum Current Temperature Derating at sea level
(Vin=48V, longitudinal airflow, on 10˝ x 10˝ PCB with baseplate)
Output Current (Amps)
Output Current (Amps)
0.25 m/s (50 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
30
35
40
45
50
55
60
65
70
75
80
85
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature
(°C)
Ambient Temperature
(°C)
Maximum Power Temperature Derating at sea level
(Vin=48V, transverse airflow, on 10˝ x 10˝ PCB with baseplate)
480
450
420
Output Power (Watts)
Output Power (Watts)
390
360
330
300
270
240
210
180
35
0.25 m/s (50 LFM)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
40
45
50
55
60
65
70
75
80
85
480
450
420
390
360
330
300
270
240
210
180
35
Maximum Power Temperature Derating at sea level
(Vin=48V, longitudinal airflow, on 10˝ x 10˝ PCB with baseplate)
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