VCN60/70 Series
High Efficiency, High Current Density, 60 or 70 Amp
Single Inline Package DC/DC Converters
DESCRIPTION
Designed to support DDR1, DDR2 and DDR3 SDRAM memory power requirements, the
VCN60/70 Series point-of-load, non-isolated DC/DC converters have the high performance
and flexibility required by a wide variety of applications including computing and office equip-
ment, telecommunications hardware, industrial automation and test equipment.
These high efficiency (88% typ.), high current SIP’s feature a programmable wide output
range which is suitable for powering ASICs, FPGAs, DSPs and other types of ICs. The use
of integrated drivers and switching devices allows the VCN60/70 Series to switch at high
frequency, providing high bandwidth and high current density (50A/in
3
) in a 1U form factor
without sacrificing efficiency.
SELECTION GUIDE
VCN60BADJTU-1C
VCN70BADJTU-1C
Order Code
VCN60BADJTU-1C
VCN70BADJTU-1C
Nominal
Input Voltage (V)
12
12
Output
Current (A)
60
70
Output
Voltage
Adjustable
Adjustable
Mounting
Type
Thru-hole
Thru-hole
Form
Factor
1U
1U
FEATURES
Supports Double Data Rate SDRAM specifications
DDR1, 2, 3 and similar requirements
Programmable output voltage
Soft start circuit
Over-voltage protection
Over-current protection
Over-temperature protection
Differential remote sense
Power good signal
Output enable
High efficiency
“1U” height
Pre-bias turn on
Fused input
INPUT CHARACTERISTICS
Parameter
Input voltage operating range
Turn ON threshold
Turn OFF threshold
Maximum input current
No-load input current
Disabled input current
Input reflected ripple current
Recommended External Input
Capacitance
1
OUTPUT CHARACTERISTICS
Parameter
Voltage set point
Line regulation
Load regulation
Initial setpoint accuracy
Ripple & noise
Current operating range
Efficiency @ 60Amp Load
Turn-on time
Remote sense compensation
Required External Output
Capacitance
2
Transient Response
3
Conditions
V
IN
rising
V
IN
falling
1.80V
OUT
@ 70A/12V
IN
1.80V
OUT
MIN.
10.2
TYP.
12
9.7
8.7
12
50
MAX.
13.2
Units
Vdc
A
330
mA
mA RMS
μF
1.80V
OUT
@ 70A/13.2Vin
OSCON type or equivalent
270
100
Conditions
Programmable
1.2V
OUT
1.2V
OUT
0.1% trim resistor @ 1.2V
20MHz bandwidth
140W max output
100% load 12V
IN
, 1.8V
OUT
MIN.
0.6
TYP.
0.5
25
0
88
MAX.
3.5
+/– 0.1
+/– 0.2
+/– 1.0
70
10
10
Units
V
%
mV p-p
A
%
mS
%Vo
nom
μF
Setpoint dependent
1A / μS
0.5A / μS
560
+/– 3
+/– 2
%
For full details go to
www.murata-ps.com/rohs
1. No capacitor needed for Input Ripple Current capability. The voltage rating on the external caps should
be twice the expected maximum working voltage.
2. Characterized with low ESR output capacitors, such as United Chemi-Con 4PS560MH11, Fujitsu FP-
4R0RE561M-S1R, Sanyo OSCON 4SP560M. Setpoints of 1V and lower require three capacitors, with a
maximum of 4000μF. Setpoints of 1.2V and 1.5V require two capacitors, with a maximum of 4000μF.
Setpoints of 1.8V and higher require one capacitor, with the maximum allowed capacitance of 4000μF
up to 2V and 2300μF maximum at above 2V. The voltage rating on the external caps should be twice
the expected maximum working voltage.
3. Load steps from 30-60A for 1.8V and lower set points. 20–40A for 2.5V and 3.3V setpoints.
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
www.murata-ps.com
MDC_VCN Series.B08 Page 1 of 7
MURATA [ MURATA MANUFACTURING CO., LTD. ]
