GE Industrial Solutions 40A Analog MegaDLynx User Manual
GE
Data Sheet
April 24, 2013
©2012 General Electric Company. All rights reserved.
Features
Compliant to RoHS EU Directive 2011/65/EU (Z versions)
Compliant to IPC-9592 (September 2008), Category 2, Class II
Compatible in a Pb-free or SnPb reflow environment (Z versions)
Wide Input voltage range (4.5Vdc-14.4Vdc)
Output voltage programmable from 0.6Vdc to 2.0Vdc via
external resistor.
Tunable Loop
TM
to optimize dynamic output voltage response.
Power Good signal.
Fixed switching frequency with capability of external
synchronization.
Output overcurrent protection (non-latching).
Over temperature protection.
Remote On/Off.
Ability to sink and source current.
Cost efficient open frame design.
Small size: 33.02 mm x 13.46 mm x 10.9 mm
(1.3 in x 0.53 in x 0.429 in)
Wide operating temperature range [-40°C to 105°C].
Ruggedized (-D) version able to withstand high levels of shock
and vibration
UL* 60950-1 2
nd
Ed. Recognized, CSA† C22.2 No. 60950-1-
07 Certified, and VDE‡ (EN60950-1 2nd Ed.) Licensed
ISO** 9001 and ISO 14001 certified manufacturing facilities
Applications
Industrial equipment
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Description
The 40A Analog MegaDLynxTM power modules are non-isolated dc-dc converters that can deliver up to 40A of output current. These
modules operate over a wide range of input voltage (VIN = 4.5Vdc-14.4Vdc) and provide a precisely regulated output voltage from
0.6Vdc to 2.0Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and
overtemperature protection. The module also includes the Tunable LoopTM feature that allows the user to optimize the dynamic
response of the converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area.
* UL is a registered trademark of Underwriters Laboratories, Inc.
†
CSA is a registered trademark of Canadian Standards Association.
‡
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
TRIM
VOUT
VS+
GND
RTUNE
CTUNE
RTrim
VIN
Co
Cin
Vout+
Vin+
ON/OFF
SEQ
MODULE
PGOOD
SIG_GND
VS-
GND
SYNC
RoHS Compliant
SHARE
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
GE
Data Sheet
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 2
Parameter
Device
Symbol
Min
Max
Unit
Input Voltage
All
V
IN
-0.3
15
V
Continuous
Operating Ambient Temperature
All
TA -40
105
°C
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
All
VIN
4.5 14.4
Vdc
Maximum Input Current
All
I
IN,max
24
Adc
(VIN=4.5V to 14V, IO=I
O, max
)
Input No Load Current
(VIN = 12Vdc, IO = 0, module enabled)
V
O,set
= 0.6 Vdc
I
IN,No load
54.7 mA
V
O,set
= 2Vdc
I
IN,No load
104 mA
Input Stand-by Current
(VIN = 12Vdc, module disabled)
All
I
IN,stand-by
12.5 mA
Inrush Transient
All
I2t
1
A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN =0 to 14V, IO= I
Omax
;
See Test Configurations)
All
90 mAp-p
Input Ripple Rejection (120Hz)
All
-60 dB
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings
only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations
sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
GE
Data Sheet
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 3
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point (with 0.1% tolerance for external
resistor used to set output voltage)
All
V
O, set
-1.0 +1.0
% V
O, set
Output Voltage (Over all operating input voltage, resistive load,
and temperature conditions until end of life)
All
V
O, set
-3.0 +3.0
% V
O, set
Adjustment Range (selected by an external resistor)
(Some output voltages may not be possible depending on the
input voltage – see Feature Descriptions Section)
All
VO 0.6 2.0
Vdc
Remote Sense Range
All 0.5
Vdc
Output Regulation
Line (VIN=V
IN, min
to V
IN, max
)
All 6
mV
Load (IO=I
O, min
to I
O, max
)
All 10
mV
Temperature (T
ref=TA, min
to T
A, max
)
All
0.4 % V
O, set
Output Ripple and Noise on nominal output
(VIN=V
IN, nom
and IO=I
O, min
to I
O, max
Co = 0.1μF // 22 μF ceramic
capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
50
100
mV
pk-pk
RMS (5Hz to 20MHz bandwidth)
All
20
38
mV
rms
External Capacitance1
Without the Tunable Loop
TM
ESR ≥ 1 mΩ
All
C
O, max
6x47 6x47
μF
With the Tunable Loop
TM
ESR ≥ 0.15 mΩ
All
C
O, max
6x47 7000
μF
ESR ≥ 10 mΩ
All
C
O, max
6x47 8500
μF
Output Current (in either sink or source mode)
All
Io 0 40
Adc
Output Current Limit Inception (Hiccup Mode)
(current limit does not operate in sink mode)
All
I
O, lim
150 % I
o,max
Output Short-Circuit Current
All
I
O, s/c
2.1 Arms
(VO≤250mV) ( Hiccup Mode )
Efficiency
V
O,set
= 0.6Vdc
η
81.3 %
VIN= 12Vdc, TA=25°C
V
O, set
= 1.2Vdc
η
88.5 %
IO=I
O, max , VO
= V
O,set
V
O,set
= 1.8Vdc
η
91.5 %
Switching Frequency
All
f
sw
400 kHz
Frequency Synchronization
All Synchronization Frequency Range
All 350 480
kHz
High-Level Input Voltage
All
VIH
2.0 V Low-Level Input Voltage
All
VIL
0.4 V Input Current, SYNC
All
ISYNC
100
nA
Minimum Pulse Width, SYNC
All
tSYNC
100
ns
Maximum SYNC rise time
All
tSYNC_SH
100
ns
Electrical Specifications (continued)
1
External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient response. See
the Tunable LoopTM section for details.
GE
Data Sheet
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 4
Parameter
Device
Min
Typ
Max
Unit
Calculated MTBF (IO=0.8I
O, max
, TA=40°C) Telecordia Issue 2 Method
1 Case 3
All 6,498,438
Hours
Weight
11.7 (0.41)
g (oz.)
Parameter
Device
Symbol
Min
Typ
Max
Unit
On/Off Signal Interface
(VIN=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to GND)
Device is with suffix “4” – Positive Logic (See Ordering Information)
Logic High (Module ON)
Input High Current
All
IIH 10
µA
Input High Voltage
All
VIH
3.5 V
IN,max
V
Logic Low (Module OFF)
Input Low Current
All
IIL
1
mA
Input Low Voltage
All
VIL
-0.3 0.4
V
Device Code with no suffix – Negative Logic (See Ordering
Information)
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Logic High (Module OFF)
Input High Current
All
IIH ― ― 1 mA
Input High Voltage
All
VIH 2 ―
V
IN, max
Vdc
Logic Low (Module ON)
Input low Current
All
IIL ― ―
10
μA
Input Low Voltage
All
VIL
-0.2 ― 0.4
Vdc
Turn-On Delay and Rise Times
(VIN=V
IN, nom
, IO=I
O, max , VO
to within ±1% of steady state)
Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which VIN = V
IN, min
until Vo =
10% of Vo, set)
All
Tdelay
―
1.1 ― msec
Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until Vo = 10% of Vo, set)
All
Tdelay
―
700 ― μsec
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set)
All
Trise
―
1.5 ― msec
Output voltage overshoot (TA = 25oC
VIN= V
IN, min
to V
IN, max,IO
= I
O, min
to I
O, max
)
With or without maximum external capacitance
3.0
% V
O, set
Output voltage overshoot (TA = 25oC
VIN= V
IN, min
to V
IN, max,IO
= I
O, min
to I
O, max
)
With or without maximum external capacitance
3.0
% V
O, set
General Specifications
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See
Feature Descriptions for additional information.
GE
Data Sheet
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 5
Parameter
Device
Symbol
Min
Typ
Max
Units
Over Temperature Protection
(See Thermal Considerations section)
All
T
ref
145 °C
Tracking Accuracy (Power-Up: 0.5V/ms)
All
VSEQ –Vo
100
mV
(Power-Down: 0.5V/ms)
All
VSEQ –Vo
100
mV
(V
IN, min
to V
IN, max
; I
O, min
to I
O, max
VSEQ < Vo)
Input Undervoltage Lockout
Turn-on Threshold
All
4.25 Vdc
Turn-off Threshold
All
3.96 Vdc
Hysteresis
All
0.25 Vdc
PGOOD (Power Good)
Signal Interface Open Drain, V
supply
5VDC
Overvoltage threshold for PGOOD ON
All
108 %V
O, set
Overvoltage threshold for PGOOD OFF
All
110 %V
O, set
Undervoltage threshold for PGOOD ON
All
92 %V
O, set
Undervoltage threshold for PGOOD OFF
All
90 %V
O, set
Pulldown resistance of PGOOD pin
All 50
Sink current capability into PGOOD pin
All 5
mA
Feature Specifications (Continued)
GE
Data Sheet
40A Analog MegaDLynxTM: Non-Isolated DC-DC Power Modules
4.5Vdc –14.4Vdc input; 0.6Vdc to 2.0Vdc output; 40A Output Current
April 24, 2013
©2012 General Electric Company. All rights reserved.
Page 6
EFFICIENCY, (%)
OUTPUT CURRENT, Io (A)
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA OC
Figure 1. Converter Efficiency versus Output Current.
Figure 2. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
V
O
(V) (10mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
I
O
(A) (20A/div) V
O
(V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 3. Typical output ripple and noise (CO=6x47uF
ceramic, VIN = 12V, Io = Io,max, ).
Figure 4. Transient Response to Dynamic Load Change from
50% to 100% at 12Vin, Cout= 12x680uF+6x47uF, CTune=47nF,
RTune=180 ohms
OUTPUT VOLTAGE ON/OFF VOLTAGE
V
O
(V) (200mV/div) V
ON/OFF
(V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V
O
(V) (200mV/div) V
IN
(V) (5V/div)
TIME, t (1ms/div)
TIME, t (1ms/div)
Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Io =
Io,max).
70
75
80
85
90
0 10 20 30 40
Vin=14V
Vin=12V
Vin=4.5V
15
20
25
30
35
40
45
45 55 65 75 85 95 105
2m/s
(400LFM)
1.5m/s
(300LFM)
0.5m/s
(100LFM)
NC
Ruggedized (D)
Part (105 C)
Standard Part
(85 C)
1m/s
(200LFM)
Characteristic Curves
The following figures provide typical characteristics for the 40A Analog MegaDLynxTM at 0.6Vo and 25oC.
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