TM
250W DC-DC CONVERTER
MODEL: SYVHC48-5-50-1
PRELIMINARY DATA SHEET
•
INPUT:
36 - 75VDC
•
OUTPUT: 5VDC @ 50A
FEATURES
•
High Efficiency: Over 91%
•
High Power Density: 86 W/cu. in.
•
Provisions for Heat Sink Attachment
•
Optional Non-Shutdown Over Voltage
Protection
•
Recovers Automatically from all
Protection Modes
•
Trim Range: 80 to 110%
•
Remote Sense
•
Constant Frequency
•
-40 to +100°C Operation
•
Safety Agency Compliant
•
Dual Output Pins for a Low Loss PCB
Interface
Efficiency
94
92
90
Efficiency (%)
88
48Vin
86
36Vin
84
82
80
0
5
10
15
20
25
30
75Vin
35
40
45
50
Evaluation Boards Are Available
See the back page for available options
DESCRIPTION
Load Current (Amps)
SYNCROVERTER HC DC-DC converters are ultra-high efficiency, high current modules
packaged in modified “half brick” package. Their isolated, fixed frequency, state-of-the-art
design uses synchronous rectification, an integrated planar transformer, and a low loss multi-
layer PCB to provide up to 50A of 5Vdc power. Their very high efficiency allows them to be
operated in a typical application without a heat sink. The HC series includes an integral thermal
interface to attach a high performance cooling system for more demanding environments.
RO Associates, Inc.
Sunnyvale, CA
408 744-1450
fax:408 744-1521
email:sales@roassoc.com
SYNCROVERTER
TM
HC
DC-DC Converter
SYVHC48-5-50-1
ABSOLUTE MAXIMUM RATINGS
Exceeding absolute maximum ratings may cause permanent damage and may reduce reliability
PARAMETER
Continuous Input Voltage (+In to –In)
Transient Input Voltage (+In to –In)
On/Off Voltage (On/Off to –In)
Storage Temperature
Operating Temperature
Soldering Temperature (Wave Solder)
Soldering Temperature (Hand Solder)
MIN
-0.3
-0.3
-0.3
-40
-40
MAX
75
80
40
+125
+100
+260
+390
UNITS
Vdc
Vdc
Vdc
°C
°C
°C
°C
CONDITIONS
Up to 100ms
Baseplate
< 5 sec.
< 7 sec.
SPECIFICATIONS
Specifications apply with 48Vin, full load, 25°C unless indicated otherwise.
INPUT PARAMETERS
Input Voltage
Startup Voltage
Shut Down Voltage
Maximum Input Current
Input Ripple Rejection
OUTPUT PARAMETERS
Voltage Set Point
Load Regulation
Line Regulation
Voltage Drift w/Temperature
Ripple
Rated Current
Output Power
Current Limit Inception
Short Circuit Current
Transient Response
Peak Deviation
Settling Time
External Load Capacitance
Efficiency (See Efficiency Curve)
MIN
36
33
30
TYP
48
34
31
60
MAX
75
35
32
8.5
UNITS
Vdc
Vdc
Vdc
A
dB
CONDITIONS
36Vin, 25°C
@120 Hz
CONDITIONS
48Vin, 25°C, Full Load
0 A to Full Load
Over Vin Range
-40 to +100 °C
5 Hz to 20 MHz,
C
ext
= 10µF Tantalum + 1µF Ceramic
@ 5Vdc
Vout = 95% Vout nominal
Vout = 250mV
Load change from 50% to 75% full load
Slew rate = 1A/µsec
Vout within 1% Vout nominal
Vin = 48V, 40A Load, 25 °C Case
MIN
4.95
TYP
5.00
0.05
0.05
75
MAX
5.05
0.2
0.2
0.02
150
50
250
UNITS
Vdc
%
%
%/°C
mV p-p
A
W
% F.L.
% F.L.
% Vout
µsec
0
112
117
130
150
3
50
0
91
10,000
µF
%
RO Associates, Inc.
Sunnyvale, CA
408 744-1450
fax:408 744-1521
email:sales@roassoc.com
SYNCROVERTER
TM
HC
DC-DC Converter
SYVHC48-5-50-1
SPECIFICATIONS (continued)
ISOLATION PARAMETERS
Input/Output Isolation
Input/Baseplate Isolation
Output/Baseplate Isolation
Input-to-Output Capacitance
Input-to-Output Resistance
MECHANICAL PARAMETERS
Weight
Size
Thermal Resistance, Case-to-
Ambient
FEATURE PARAMETERS
Trim Range
Over Voltage Protection
Shut Down Voltage
Auto-Restart Delay
Over Temperature Shut-down
(Automatic Recovery)
Turn-On Time
Logic On/Off
Logic Low
On/Off Source Current
Logic High
On/Off Sink Current
Logic Turn-On Time
12
0.5
2
15
50
MIN
4.0
115
150
105
25
60
10
MIN
TYP
94 (3.3)
2.42 x 2.4 x 0.5
6.6
MAX
125
MIN
TYP
MAX
1500
1500
500
UNITS
Vdc
Vdc
Vdc
pF
M Ohms
UNITS
g (oz.)
Inches
°C/W
Case Temperature = 100°C
CONDITIONS
CONDITIONS
TYP
MAX
5.5
140
UNITS
Vdc
CONDITIONS
25°C Case
% Vout
msec
°C
msec
V
mA
V
µA
msec
Case Temperature
80% F.L., Vout Settled within 1%
Vout = 0
@Von/off < 0.5V
@Von/off = 15V
80% F.L., Vout Settled within 1%
TRIM CIRCUIT CONFIGURATIONS
TRIM-UP
+OUT
+SENSE
R
trim-up
TRIM
LOAD
-SENSE
-OUT
-SENSE
-OUT
R
trim-dn
TRIM
TRIM-DOWN
+OUT
+SENSE
LOAD
TRIM RESISTOR CALCULATIONS
(Standard Trim)
V
(
100
+ ∆
%)
(
100
+
1
.
1
⋅ ∆
%
)
−
R
trim
−
up
=
10
⋅
O
⋅
k
Ω
∆
%
1
.
225
∆
%
100
−
1
.
1
⋅
k
Ω
R
trim
−
dn
=
10
⋅
∆
%
Where:
Vo
= The nominal output voltage of the module
with no trimming.
∆
% =
The desired percentage change in the
output (∆
%
is always a positive number).
∆
RO Associates, Inc.
Sunnyvale, CA
408 744-1450
fax:408 744-1521
email:sales@roassoc.com
SYNCROVERTER
TM
HC
DC-DC Converter
SYVHC48-5-50-1
Input Characteristics
10
9
8
7
6
5
4
3
2
1
0
6
Output Characteristics
(Vin = 48V)
Output Voltage (Volts)
Input Current (Amps)
SYVHC48-5-50
Full Load
5
4
3
2
1
0
0
10
20
30
40
50
60
70
80
Output Automatically Recovers
When Overload is Removed
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
Input Voltage (Volts)
Output Current (Amps)
5V Transient Response
Vout @ 100mV/DIV.
Outline Drawing
2.42
[61.5]
2.042
[51.87]
0.169 Ø MAX
[4.28 Ø MAX]
MOUNTING
INSERTS
M3 x 0.5 THRU
4 PL
0.30
[7.6]
-VIN
-VOUT
2.40
[61.0]
1.400
[35.56]
0.600
[15.24]
CASE
-S
2.00
[50.8]
PIN SIDE
NEARSIDE
ON/
OFF
T
+S
0.400
[10.16]
0.300
[7.62]
+VIN
+VOUT
Iout @ 5A/DIV.
0.137 [3.47]
Sweep @ 50µsec/DIV.
0.332 [8.43]
Iout = 25.0A – 37.5A – 25.0A
Current Slew Rate = 1 A/µsec
0.040 [1.02] Ø PIN
7 PL.
0.080 [2.03] Ø PIN
4 PL.
0.21
[5.3]
Part Numbering Scheme
Converter
Family
Vin
(nom)
Vout
(nom)
Io
(rated)
Options
Code
Special
Features
ALUMINUM HEATSINK SURFACE
0.500 ± 0.020
[12.70 ± 0.5]
SYVHC
SyncroVerter
HC
Series
48
48V nom.
36V - 75V
-
5
5V
output
-
50
Io
rating
= 50A
-
1R
neg. logic
ride-thru OVP
(see
below)
none
ALL DIMENSIONS ARE IN
INCHES
[MILLIMETERS]
The options code is the concatenation of the suffixes for the desired options.
TOLERANCES UNLESS SPECIFIED OTHERWISE:
x.xx in. ± 0.02 in. [x.x mm. ± 0.5 mm.]
x.xxx in. ± 0.010 in. [x.xx mm. ± 0.25 mm.]
Available Options
Negative Logic
(1) – The On/Off pin must be held low to turn the module on. If
it’s left floating, the module turns off. The suffix for negative logic is “1”.
This is the standard logic configuration.
Positive Logic
()
– The On/Off pin must be high to turn the module on. If it’s
left floating, the module turns on. The positive logic suffix is “”.
Alternate Pins
(
6)
– Replaces the standard 0.200” thru-hole pins, with
0.145” thru-hole pins. The suffix for 0.145” pins is “6”.
Alternate Trim
(T)– The trim feature matches the industry standard used
in the SyncroVerter® series. The alternate trim suffix is “T”.
Ride-Thru OVP
(R) – The protection circuits limit the output to the OVP
level without shutting down. The ride-thru OVP suffix is “R”.
(minimum quantities and extended lead-times may apply to orders of non-standard options)
RO Associates, Inc.
P.O.BOX 61419
Sunnyvale, CA 94088
www.roassoc.com
rev 040115
email:sales@roassoc.com
800-443-1450
408 744-1450
fax: 408 744-1521
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