DCM4623TD2N31C8T70 [VICOR]
Isolated, Regulated DC Converter;
| 型号： | DCM4623TD2N31C8T70 |
| 厂家： | 
VICOR CORPORATION |
| 描述： | Isolated, Regulated DC Converter |
| 文件： | 总23页 (文件大小：2248K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DCM™ DC-DC Converter
DCM4623xD2N31C8y7z
Isolated, Regulated DC Converter
Features & Benefits
Product Ratings
VIN = 120 V to 420 V
POUT = 375 W
• Isolated, regulated DC-DC converter
• Up to 375 W, 13.40 A continuous
• 93.9% peak efficiency
VOUT = 28.0 V
(16.8 V to 30.8 V Trim)
IOUT = 13.40 A
• 814 W/in3 Power density
Product Description
• Wide input range 120 – 420 Vdc
• Safety Extra Low Voltage (SELV) 28.0 V Nominal Output
• 4242 Vdc isolation
The DCM Isolated, Regulated DC Converter is a DC-DC
converter, operating from an unregulated, wide range input to
generate an isolated 28.0 Vdc output. With its high frequency
zero voltage switching (ZVS) topology, the DCM converter
consistently delivers high efficiency across the input line range.
Modular DCM converters and downstream DC-DC products
support efficient power distribution, providing superior power
system performance and connectivity from a variety of
unregulated power sources to the point-of-load.
• ZVS high frequency switching
n
Enables low-profile, high-density filtering
• Fully operational current limit
• OV, OC, UV, short circuit and thermal protection
• 4623 through-hole ChiP package
Leveraging the thermal and density benefits of Vicor’s ChiP
packaging technology, the DCM module offers flexible thermal
management options with very low top and bottom side
thermal impedances. Thermally-adept ChiP based power
components enable customers to achieve cost effective power
system solutions with previously unattainable system size,
weight and efficiency attributes, quickly and predictably.
n 1.886” x 0.898” x 0.284”
(47.91 mm x 22.8 mm x 7.21 mm)
Typical Applications
• Industrial
• Process Control
• Heavy Equipment
• Defense / Aerospace
Part Ordering Information
Max
Input
Voltage
Max
Output
Voltage
Max
Output
Power
Product
Function
Package
Size
Package
Type
Range
Ratio
Temperature
Grade
Option
DCM
46
23
x
D2
N
31
C8
y
7z
DCM =
DC-DC
Converter
Length
in mm
x 10
Width
in mm
x 10
T =
Through hole
ChiPs
70 = Enhanced VOUT
Regulation / Analog
Control Interface Version
T = -40°C – 125°C
M = -55°C – 125°C
Internal Reference
DCM™ DC-DC Converter
Rev 1.0
Page 1 of 23
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DCM4623xD2N31C8y7z
Typical Application
DCM
TR
EN
FT
Load 1
R1
L1
L2
F1
+IN
-IN
+OUT
-OUT
C1
COUT-EXT
Vin
Non-isolated
Point-of-Load
Regulator
Load 2
Typical Application: Single DCM4623xD2N31C8y7z, to a non-isolated regulator, and direct to load
DCM™ DC-DC Converter
Rev 1.0
Page 2 of 23
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DCM4623xD2N31C8y7z
Pin Configuration
TOP VIEW
1
2
+IN
TR
A
B
+OUT
-OUT
A’
B’
EN
FT
C
D
C’ +OUT
D’ -OUT
-IN
E
4623 ChiP Package
Pin Descriptions
Pin
Signal Name
Type
Function
Number
A1
B1
C1
D1
+IN
TR
INPUT POWER
INPUT
Positive input power terminal
Enables and disables trim functionality. Adjusts output voltage when trim active.
Enables and disables power supply
EN
FT
INPUT
OUTPUT
Fault monitoring
INPUT POWER
RETURN
E1
-IN
Negative input power terminal
A’2, C’2
B’2, D’2
+OUT
-OUT
OUTPUT POWER Positive output power terminal
OUTPUT POWER
Negative output power terminal
RETURN
DCM™ DC-DC Converter
Rev 1.0
Page 3 of 23
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DCM4623xD2N31C8y7z
Absolute Maximum Ratings
The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device.
Electrical specifications do not apply when operating beyond rated operating conditions.
Parameter
Comments
Min
-0.5
-1
Max
460.0
1
Unit
V
Input Voltage (+IN to –IN)
Input Voltage Slew Rate
TR to - IN
V/µs
V
-0.3
-0.3
-0.3
3.5
3.5
3.5
5
EN to -IN
V
V
FT to -IN
mA
V
Output Voltage (+Out to –Out)
-0.5
4242
-40
37.0
Dielectric withstand (input to output)
Reinforced insulation
T Grade
Vdc
°C
°C
°C
°C
A
125
125
125
125
19.0
Internal Operating Temperature
M Grade
-55
T Grade
-40
Storage Temperature
M Grade
-65
Average Output Current
Figure 1 — Thermal Specified Operating Area: Max Output Power
Figure 2 — Electrical Specified Operating Area
vs. Case Temp, module at minimum full load efficiency
DCM™ DC-DC Converter
Rev 1.0
Page 4 of 23
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DCM4623xD2N31C8y7z
Electrical Specifications
Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the
temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade.
Attribute
Symbol
Conditions / Notes
Min
120
Typ
275
Max
Unit
Power Input Specification
Input voltage range
VIN
IINRP
Continuous operation
420
3.8
V
A
Inrush current (peak)
With maximum COUT-EXT, full resistive load
Effective value at nominal input voltage
At 1 MHz
Input capacitance (internal)
Input capacitance (internal) ESR
Input inductance (external)
CIN-INT
RCIN-INT
LIN
0.9
µF
2.55
mΩ
µH
Differential mode, with no further line bypassing
No Load Specification
5
Nominal line, see Fig. 3
1.2
3.0
2.0
2.4
4.4
6.5
W
W
W
W
Input power – disabled
PQ
Worst case line, see Fig. 3
Nominal line, see Fig. 4
Input power – enabled with no load
PNL
Worst case line, see Fig. 4
Power Output Specification
Output voltage set point
VOUT-NOM
27.86
28.0
28.14
V
V
Trim range over temp, with > 10% rated load.
Specifies the Low, Nominal and High Trim conditions.
Rated output voltage trim range
VOUT-TRIMMING
16.8
28.0
30.8
0% to 10% load, additional VOUT relative to VOUT
accuracy; see Fig. 5 and Sec. Design Guidelines
Output voltage light load regulation
VOUT accuracy
ΔVOUT-LL
-0.00
-1.0
4.72
1.0
V
The total output voltage setpoint accuracy from the
calculated ideal VOUT based on trim. Excludes ΔVOUT-LL
%VOUT-ACCURACY
%
Rated output power
Rated output current
POUT
IOUT
Continuous, VOUT ≥ 28.0 V
Continuous, VOUT ≤ 28.0 V
375
W
A
13.40
Of rated IOUT max. Fully operational current limit, for
nominal trim and below
Output current limit
Current limit delay
IOUT-LM
100
120
140
%
tIOUT-LIM
The module will power limit in a fast transient event
Full load, nominal line, nominal trim
1
ms
%
%
%
93.1
87.1
87.9
93.9
Efficiency
η
Full load, over line and temperature, nominal trim
50% load, over rated line, temperature and trim
20 MHz bandwidth. At nominal trim, minimum COUT-EXTand
at least 10 % rated load
Output voltage ripple
VOUT-PP
757
mV
Output capacitance (internal)
COUT-INT
Effective value at nominal output voltage
At 1 MHz
32
µF
Output capacitance (internal) ESR
RCOUT-INT
0.070
mΩ
Excludes component temperature coefficient For load
transients that remain > 10% rated load
Output capacitance (external)
Output capacitance (external)
Output capacitance (external)
Output capacitance, ESR (ext.)
COUT-EXT
200
200
200
10
2000
2000
2000
µF
Excludes component temperature coefficient For load
transients down to 0% rated load, with static trim
Excludes component temperature coefficient Forload
transientsdownto0%ratedload,withdynamictrimming
COUT-EXT-TRANS
µF
COUT-EXT-
µF
TRANS-TRIM
RCOUT-EXT
At 10 kHz, excludes component tolerances
mΩ
DCM™ DC-DC Converter
Rev 1.0
Page 5 of 23
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DCM4623xD2N31C8y7z
Electrical Specifications (cont.)
Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the
temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
70
Unit
Power Output Specifications (Cont.)
Initialization delay
tINIT
tON
See state diagram
25
ms
µs
From rising edge EN, with VIN pre-applied. See timing
diagram
Output turn-on delay
Output turn-off delay
200
tOFF
tSS
From falling edge EN. See timing diagram
600
µs
Soft start ramp time
VOUT threshold for max
rated load current
At full rated resistive load, with min COUT-EXT
.
30
ms
During startup, VOUT must achieve this threshold before
VOUT-FL-THRESH
IOUT-START
VOUT-MONOTONIC
14.0
V
A
output can support full rated current
Max load current at startup while VOUT
IOUT at startup
1.34
is below VOUT-FL_THRESH
Monotonic soft-start threshold
voltage
Output voltage rise becomes monotonic with 10% of
preload once it crosses VOUT-MONOTONIC
14.0
2
V
This refers to the minimum time a module needs to be
in the disabled state before it will attempt to start via EN
Minimum required disabled duration
tOFF-MIN
ms
This refers to the minimum time a module needs to be in
tOFF-MONOTONIC the disabled state before it is guaranteed to exhibit
monotonic soft-start and have predictable startup timing
Minimum required disabled duration
for predictable restart
100
ms
Voltage deviation (transient)
Settling time
%VOUT-TRANS
<10
7.7
%
Minimum COUT_EXT (10 ↔ 90% load step).
tSETTLE
ms
Powertrain Protections
Input Voltage Initialization threshold
Input Voltage Reset threshold
VIN-INIT
VIN-RESET
VIN-UVLO-
VIN-UVLO+
VIN-OVLO+
VIN-OVLO-
Threshold to start tINIT delay
75
V
V
V
V
V
V
Latching faults will clear once VIN falls below VIN-RESET
50
Input undervoltage lockout threshold
Input undervoltage recovery threshold
Input overvoltage lockout threshold
Input overvoltage recovery threshold
72.00
114.00
120.00
455
See Timing diagram
See Timing diagram
420
Output overvoltage threshold
Output overvoltage threshold
VOUT-OVP
From 25% to 100% load. Latched shutdown
35.42
V
V
VOUT-OVP-LL
From 0% to 25% load. Latched shutdown
36.96
125
Minimum current limited VOUT
Overtemperature threshold (internal)
Power limit
VOUT-UVP
TINT-OTP
PLIM
Over all operating steady-state line and trim conditions
12.60
780
V
°C
W
VIN overvoltage to cessation of
powertrain switching
tOVLO-SW
Independent of fault logic
For fault logic only
2.4
µs
VIN overvoltage response time
VIN undervoltage response time
Short circuit response time
tOVLO
tUVLO
tSC
200
100
200
µs
ms
µs
Powertrain on, operational state
See Timing diagram
Short circuit, or temperature fault
recovery time
tFAULT
1
s
DCM™ DC-DC Converter
Rev 1.0
Page 6 of 23
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DCM4623xD2N31C8y7z
Signal Specifications
Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the
temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade.
Enable: EN
• The EN pin enables and disables the DCM converter; when held low the unit will be disabled.
• The EN pin has an internal pull-up to VCC and is referenced to the -IN pin of the converter.
SIGNAL TYPE
STATE
ATTRIBUTE
EN enable threshold
EN disable threshold
Internally generated VCC
SYMBOL
VENABLE-EN
VENABLE-DIS
VCC
CONDITIONS / NOTES
MIN NOM MAX UNIT
2.31
V
V
V
0.99
3.21 3.30 3.39
DIGITAL
INPUT
Any
EN internal pull up
resistance to VCC
RENABLE-INT
9.5
10.0 10.5
kΩ
Trim: TR
• The TR pin enables and disables trim functionality when VIN is initially applied to the DCM converter.
When Vin first crosses VIN-UVLO+, the voltage on TR determines whether or not trim is active.
• If TR is not floating at power up and has a voltage less than TR trim enable threshold, trim is active.
• If trim is active, the TR pin provides dynamic trim control with at least 30Hz of -3dB control bandwidth over the output voltage of the DCM converter.
• The TR pin has an internal pull-up to VCC and is referenced to the -IN pin of the converter.
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN NOM MAX UNIT
Trim disabled when TR above this threshold
at power up
TR trim disable threshold
VTRIM-DIS
3.20
V
V
DIGITAL
INPUT
Startup
Trim enabled when TR below this threshold
at power up
TR trim enable threshold
VTRIM-EN
3.15
Internally generated VCC
TR pin functional range
VCC
3.21 3.30 3.39
V
V
VTRIM-RANGE
0.00 2.44 3.16
Operational
with Trim
enabled
ANALOG
INPUT
VOUT referred TR
pin resolution
VOUT-RES
With VCC = 3.3 V
37
mV
TR internal pull up
resistance to VCC
RTRIIM-INT
9.5
10.0 10.5
kΩ
Fault: FT
• The FT pin is a Fault flag pin.
• When the module is enabled and no fault is present, the FT pin does not have current drive capability.
• Whenever the powertrain stops (due to a fault protection or disabling the module by pulling EN low), the FT pin output Vcc and provides current to drive
an external ciruit.
• When module starts up, the FT pin is pulled high to VCC during microcontroller initialization and will remain high until soft start process starts.
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN NOM MAX UNIT
FT internal pull up
resistance to VCC
Any
RFAULT-INT
474
3.0
4
499
524
kΩ
V
FT voltage
VFAULT-ACTIVE At rated current drive capability
Over-load beyond the ABSOLUTE MAXIMUM
DIGITAL
OUTPUT
FT current drive capability
IFAULT-ACTIVE
mA
FT Active
ratings may cause module damage
Delay from cessation of switching to
FT Pin Active
FT response time
tFT-ACTIVE
200
µs
DCM™ DC-DC Converter
Rev 1.0
Page 7 of 23
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DCM4623xD2N31C8y7z
High Level Functional State Diagram
Conditions that cause state transitions are shown along arrows. Sub-sequence activities listed inside the state bubbles.
Application of
VIN
VIN > VIN-INIT
INITIALIZATION
SEQUENCE
NON LATCHED
FAULT
EN = False
MIN-OFF delay
t
tOFF
t
INIT delay
Powertrain: Stopped
FT = True
Powertrain: Stopped
FT = True
EN = False
tOFF-MIN delay
VIN > VIN-UVLO+ and
not Over-temp
TR mode latched
EN = True and
No Faults
tON delay
SOFT START
RUNNING
STANDBY
VOUT Ramp Up
ss delay
tSS Expiry
Regulates VOUT
t
Powertrain: Stopped
FT = True
EN = False
Powertrain: Active
FT = False
Powertrain: Active
FT = False
tOFF delay
REINITIALIZATION
SEQUENCE
t
INIT delay
Powertrain: Stopped
FT = True
NON LATCHED
FAULT
tFAULT
Fault Removed
Powertrain: Stopped
FT = True
LATCHED
FAULT
Powertrain: Stopped
FT = True
EN = False
DCM™ DC-DC Converter
Rev 1.0
Page 8 of 23
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DCM4623xD2N31C8y7z
Timing Diagrams
Module Inputs are shown in blue; Module Outputs are shown in brown.
DCM™ DC-DC Converter
Rev 1.0
Page 9 of 23
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DCM4623xD2N31C8y7z
Timing Diagrams (Cont.)
Module Inputs are shown in blue; Module Outputs are shown in brown.
DCM™ DC-DC Converter
Rev 1.0
Page 10 of 23
07/2017
DCM4623xD2N31C8y7z
Typical Performance Characteristics
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
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Figure 3 — Disabled power dissipation vs. VIN
Figure 6 — Full Load Efficiency vs. VIN, at low trim
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Figure 7 — Full Load Efficiency vs. VIN, at nominal trim
Figure 4 — No load power dissipation vs. VIN, at nominal trim
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Figure 8 — Full Load Efficiency vs. VIN, at high trim
Figure 5 — Ideal VOUT vs. load current, at 25°C case
DCM™ DC-DC Converter
Rev 1.0
Page 11 of 23
07/2017
DCM4623xD2N31C8y7z
Typical Performance Characteristics (cont.)
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
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Figure 9 — Efficiency and power dissipation vs.load at TCASE = -40°C,
Figure 12 — Nominal powertrain switching frequency vs. load,
nominal trim
at nominal trim
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ꢇꢃꢀꢊꢀꢋ
ꢃꢅꢁꢊꢀꢋ
ꢃꢅꢁꢊꢀꢋ
ꢂꢃꢀꢊꢀꢋ
ꢂꢃꢀꢊꢀꢋ
Figure 10 — Efficiency and power dissipation vs.load at TCASE = 25°C,
Figure 13 — Effective internal input capacitance vs. applied voltage
nominal trim
ꢉꢈ
ꢉꢅ
ꢉꢃ
ꢉꢀ
ꢇꢇ
ꢇꢈ
ꢇꢅ
ꢇꢃ
ꢇꢀ
ꢆꢇ
ꢅꢀ
ꢄꢁ
ꢄꢀ
ꢃꢁ
ꢃꢀ
ꢂꢁ
ꢂꢀ
ꢁ
ꢀ
ꢂꢅ
ꢀ
ꢃ
ꢅ
ꢈ
ꢇ
ꢂꢀ
ꢂꢃ
ꢕꢁꢊꢖꢅꢗꢘꢄꢄꢃꢌꢋꢅꢍꢙꢏ
ꢅꢃꢀꢊꢀꢋ
ꢅꢃꢀꢊꢀꢋ
ꢃꢆꢁꢊꢀꢋ
ꢃꢆꢁꢊꢀꢋ
ꢂꢃꢀꢊꢀꢋ
ꢂꢃꢀꢊꢀꢋ
Figure 11 — Efficiency and power dissipation vs.load at TCASE = 90°C,
Figure 14 — Startup from EN, VIN = 275 V, COUT_EXT = 2000 µF,
LOAD = 2.090 Ω
nominal trim
R
DCM™ DC-DC Converter
Rev 1.0
Page 12 of 23
07/2017
DCM4623xD2N31C8y7z
Typical Performance Characteristics (cont.)
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
ꢈꢀꢀ
ꢇꢀꢀ
ꢆꢀꢀ
ꢅꢀꢀ
ꢄꢀꢀ
ꢃꢀꢀ
ꢂꢀꢀ
ꢁꢀꢀ
ꢀ
ꢁꢀ
ꢂꢀ
ꢃꢀ
ꢄꢀ
ꢅꢀ
ꢆꢀ
ꢇꢀ
ꢈꢀ
ꢉꢀ
ꢁꢀꢀ
ꢔꢕꢖꢗꢈꢏꢘꢓ
ꢊꢋꢌꢍꢎꢏꢐꢋꢑ
ꢒꢓꢑꢎꢏꢐꢋꢑ
ꢔꢓꢕꢎꢏꢐꢋꢑ
Figure 16 — Output voltage ripple, VIN = 275 V,
OUT = 28.0 V, COUT_EXT = 200 µF, RLOAD = 2.090 Ω
Figure 15 — Nominal powertrain switching frequency vs. load,
V
at nominal VIN
DCM™ DC-DC Converter
Rev 1.0
Page 13 of 23
07/2017
DCM4623xD2N31C8y7z
General Characteristics
Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the
temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade.
Attribute
Symbol
Conditions / Notes
Mechanical
Min
Typ
Max
Unit
Length
Width
L
W
H
47.53/[1.871] 47.91/[1.886] 48.29/[1.901]
22.67/[0.893] 22.8/[0.898] 22.93/[0.903]
mm/[in]
mm/[in]
mm/[in]
cm3/[in3]
g/[oz]
Height
Volume
Weight
7.11/[0.28]
7.21/[0.284]
7.93/[0.48]
29.2/[1.03]
7.31/[0.288]
Vol
W
No heat sink
Nickel
0.51
0.02
2.03
0.15
Lead finish
Palladium
Gold
µm
0.003
0.051
Thermal
T-Grade
-40
-55
125
125
°C
°C
Operating internal temperature
Thermal resistance top side
TINT
M-Grade
Estimated thermal resistance to maximum
temperature internal component from
isothermal top
θINT-TOP
1.84
5.54
°C/W
°C/W
Estimated thermal resistance to
Thermal resistance leads
θINT-LEADS maximum temperature internal
component from isothermal leads
Estimated thermal resistance to
Thermal resistance bottom side
Thermal capacity
θINT-BOTTOM maximum temperature internal
component from isothermal bottom
2.03
21.5
°C/W
Ws/°C
Assembly
T-Grade
TST
-40
-65
125
125
°C
°C
Storage temperature
ESD rating
M-Grade
Method per Human Body Model Test
HBM
CLASS 1C
CLASS 2
ESDA/JEDEC JDS-001-2012
V
CDM
Charged Device Model JESD22-C101E
Soldering [1]
For further information, please contact
factory applications
Peak temperature top case
135
°C
[1] Product is not intended for reflow solder attach.
DCM™ DC-DC Converter
Rev 1.0
Page 14 of 23
07/2017
DCM4623xD2N31C8y7z
General Characteristics (Cont.)
Specifications apply over all line, trim and load conditions, internal temperature TINT = 25ºC, unless otherwise noted. Boldface specifications apply over the
temperature range of -40°C < TINT < 125°C for T grade and -55°C < TINT < 125°C for M grade.
Attribute
Symbol
Conditions / Notes
Safety
Min
Typ
Max
Unit
IN to OUT
4242
2121
2121
Vdc
Vdc
Vdc
Dielectric Withstand Test
VHIPOT
IN to CASE
OUT to CASE
Reliability
MIL-HDBK-217 FN2 Parts Count 25°C
Ground Benign, Stationary, Indoors /
Computer
1.85
3.68
MHrs
MHrs
MTBF
Telcordia Issue 2, Method I Case 3, 25°C,
100% D.C., GB, GC
Agency Approvals
c
Agency approvals/standards
CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable
DCM™ DC-DC Converter
Rev 1.0
Page 15 of 23
07/2017
DCM4623xD2N31C8y7z
The DCM will latch trim behavior at application of VIN (once VIN
exceeds VIN-UVLO+), and persist in that same behavior until loss of
input voltage.
n At application of VIN, if TR is sampled at above VTRIM-DIS, the
module will latch in a non-trim mode, and will ignore the TR
input for as long as VIN is present.
Pin Functions
+IN, -IN
Input power pins. -IN is the reference for all control pins, and
therefore a Kelvin connection for the control signals is
recommended as close as possible to the pin on the package, to
reduce effects of voltage drop due to -IN currents.
n At application of VIN, if TR is sampled at below VTRIM-EN, the TR
will serve as an input to control the real time output voltage,
relative to full load, 25°C. It will persist in this behavior until VIN is
no longer present.
+OUT, -OUT
Output power pins.
If trim is active when the DCM is operating, the TR pin provides
dynamic trim control at a typical 30 Hz of -3dB bandwidth over the
output voltage. TR also decreases the current limit threshold when
EN (Enable)
This pin enables and disables the DCM converter; when held low the
unit will be disabled. It is referenced to the -IN pin of the converter.
The EN pin has an internal pull-up to VCC through a
10 kΩ resistor.
n Output enable: When EN is allowed to pull up above the enable
threshold, the module will be enabled. If leaving EN floating, it is
pulled up to VCC and the module will be enabled.
trimming above VOUT-NOM
.
FT (Fault)
The FT pin provides a Fault signal.
Anytime the module is enabled and has not recognized a fault, the
FT pin is inactive. FT has an internal 499 kΩ pull-up to Vcc, therefore
a shunt resistor, RSHUNT, of approximately 50 kΩ can be used to
ensure the LED is completly off when there is no fault, per the
diagram below.
n Output disable: EN may be pulled down externally in order
to disable the module.
n EN is an input only, it does not pull low in the event of a fault.
Whenever the powertrain stops (due to a fault protection or
disabling the module by pulling EN low), the FT pin becomes active
and provides current to drive an external circuit.
TR (Trim)
The TR pin is used to select the trim mode and to trim the output
voltage of the DCM converter. The TR pin has an internal pull-up to
When active, FT pin drives to VCC, with up to 4 mA of external
loading. Module may be damaged from an over-current FT drive,
thus a resistor in series for current limiting is recommended.
V
CC through a 10.0 kΩ resistor.
The FT pin becomes active momentarily when the module starts up.
Typical External Circuits for Signal Pins (TR, EN, FT)
Vcc
Vcc
Vcc
Fault
Monitoring
499k
10k
10k
Output Voltage
Reference,
Soft Start and
Fault Monitoring
Current Limit
Reference
and Soft Start Control
FT
TR
EN
SW
RSERIES
RTRIM
RSHUNT
Kelvin -IN connection
DCM™ DC-DC Converter
Rev 1.0
Page 16 of 23
07/2017
DCM4623xD2N31C8y7z
Use 0 V for ∆VOUT-LL when load is above 10ꢀ of rated load. See section
on light load boosting operation for light load effects on output voltage.
Design Guidelines
Building Blocks and System Design
The DCM™ converter input accepts the full 120 to 420 V range, and it
generates an isolated trimmable 28.0 Vdc output.
Output Current Limit
The DCM features a fully operational current limit which effectively
keeps the module operating inside the Safe Operating Area (SOA) for
all valid trim and load profiles. The current limit approximates a
“brick wall” limit, where the output current is prevented from
exceeding the current limit threshold by reducing the output voltage
via the internal error amplifier reference. The current limit threshold
at nominal trim and below is typically 120ꢀ of rated output current,
but it can vary between 100ꢀ to 140ꢀ. In order to preserve the SOA,
when the converter is trimmed above the nominal output voltage,
the current limit threshold is automatically reduced to limit the
available output power.
The DCM converter provides a tightly regulated output voltage with
regulation accuracy of 1ꢀ for all line conditions and for any load
above 10ꢀ the rated load.
The DCM4623xD2N31C8y7z is designed to be used in applications
where the output power requirements are up to 375 W.
Soft Start
When the DCM starts, it will go through a soft start. The soft start
routine ramps the output voltage by modulating the internal error
amplifier reference. This causes the output voltage to approximate a
piecewise linear ramp. The output ramp finishes when the voltage
reaches either the nominal output voltage, or the trimmed output
voltage in cases where trim mode is active.
When the output current exceeds the current limit threshold, current
limit action is held off by 1ms, which permits the DCM to
momentarily deliver higher peak output currents to the load. Peak
output power during this time is still constrained by the internal
Power Limit of the module. The fast Power Limit and relatively slow
Current Limit work together to keep the module inside the SOA.
Delaying entry into current limit also permits the DCM to minimize
droop voltage for load steps.
During soft-start, the maximum load current capability is reduced.
Until Vout achieves at least VOUT-FL-THRESH, the output current must be
less than IOUT-START in order to guarantee startup. Note that this is
current available to the load, above that which is required to charge
the output capacitor.
Sustained operation in current limit is permitted, and no derating of
output power is required.
Trim Mode and Output Trim Control
When the input voltage is initially applied to a DCM, and after tINIT
elapses, the trim pin voltage VTR is sampled. The TR pin has an
internal pull up resistor to VCC, so unless external circuitry pulls the
pin voltage lower, it will pull up to VCC. If the initially sampled trim
pin voltage is higher than VTRIM-DIS, then the DCM will disable
trimming as long as the VIN remains applied. In this case, for all
subsequent operation the output voltage will be programmed to the
nominal. This minimizes the support components required for
applications that only require the nominal rated Vout, and also
provides the best output setpoint accuracy, as there are no additional
errors from external trim components
Some applications may benefit from well matched current
distribution, in which case fine tuning sharing via the trim pins
permits control over sharing. The DCM does not require this for
proper operation, due to the power limit and current limit behaviors
described here.
Current limit can reduce the output voltage to as little as the UVP
threshold (VOUT-UVP). Below this minimum output voltage
compliance level, further loading will cause the module to shut
down due to the output undervoltage fault protection.
Line Impedance, Input Slew rate and Input Stability Requirements
Connect a high-quality, low-noise power supply to the +IN and –IN
terminals. Additional capacitance may have to be added between +IN
and –IN to make up for impedances in the interconnect cables as
well as deficiencies in the source.
If at initial application of VIN, the TR pin voltage is prevented from
exceeding VTRIM-EN, then the DCM will activate trim mode, and it will
remain active for as long as VIN is applied.
VOUT set point can be calculated using the equation below:
Excessive source impedance can bring about system stability issues
for a regulated DC-DC converter, and must either be avoided or
compensated by filtering components. A 1 µF input capacitor is the
minimum recommended in case the source impedance is
insufficient to satisfy stability requirements.
VOUT-FL = 12.25 + (21.274 • VTR/VCC
)
(1)
Note that the trim mode is not changed when a DCM recovers from
any fault condition or being disabled.
Module performance is guaranteed through output voltage trim
range VOUT-TRIMMING. If VOUT is trimmed above this range, then certain
combinations of line and load transient conditions may trigger the
output OVP.
Additional information can be found in the filter design application
note:
www.vicorpower.com/documents/application_notes/vichip_appnote23.pdf
Please refer to this input filter design tool to ensure input stability:
http://app2.vicorpower.com/filterDesign/intiFilter.do.
Overall Output Voltage Transfer Function
Taking trim (equation 1) into account, the general equation relating
the DC VOUT to programmed trim (when active), load is given by:
Ensure that the input voltage slew rate is less than 1V/us, otherwise a
pre-charge circuit is required for the DCM input to control the input
voltage slew rate and prevent overstress to input stage components.
VOUT = 12.25 + (21.274 • VTR/VCC) + ∆VOUT-LL
(2)
Finally, note that when the load current is below 10ꢀ of the rated
capacity, there is an additional ∆V which may add to the output
voltage, depending on the line voltage which is related to light load
boosting. Please see the section on light load boosting below for
details.
DCM™ DC-DC Converter
Rev 1.0
Page 17 of 23
07/2017
DCM4623xD2N31C8y7z
immediately stops switching, and the output voltage of the converter
falls. The converter remains disabled for a time tFAULT. Once recovered
and provided the converter is still enabled, the powertrain will again
Input Fuse Selection
The DCM is not internally fused in order to provide flexibility in
configuring power systems. Input line fusing is recommended at the
system level, in order to provide thermal protection in case of
catastrophic failure. The fuse shall be selected by closely matching
system requirements with the following characteristics:
enter the soft start sequence after tINIT and tON
.
Temperature Fault Protections (OTP)
The fault logic monitors the internal temperature of the converter. If
the measured temperature exceeds TINT-OTP, a temperature fault is
registered. As with the under voltage fault protection, once a
temperature fault is registered, the powertrain immediately stops
switching, the output voltage of the converter falls, and the converter
remains disabled for at least time tFAULT. Then, the converter waits for
the internal temperature to return to below TINT-OTP before
n Current rating (usually greater than the DCM converter’s
maximum current)
n Maximum voltage rating (usually greater than the maximum
possible input voltage)
n Ambient temperature
recovering. Provided the converter is still enabled, the DCM will
n Breaking capacity per application requirements
n Nominal melting I2t
restart after tINIT and tON
.
Output Overvoltage Fault Protection (OVP)
n Recommended fuse: See Agency Approvals for Recommended Fuse
http://www.vicorpower.com/dc-dc/isolated-
regulated/dcm#Documentation
The converter monitors the output voltage during each switching
cycle by a corresponding voltage reflected to the primary side control
circuitry. If the primary sensed output voltage exceeds VOUT-OVP, the
OVP fault protection is triggered. The control logic disables the
powertrain, and the output voltage of the converter falls.
Fault Handling
Input Undervoltage Fault Protection (UVLO)
This type of fault is latched, and the converter will not start again
until the latch is cleared. Clearing the fault latch is achieved by either
disabling the converter via the EN pin, or else by removing the input
The converter’s input voltage is monitored to detect an input under
voltage condition. If the converter is not already running, then it will
ignore enable commands until the input voltage is greater than
power such that the input voltage falls below VIN-INIT
.
V
IN-UVLO+. If the converter is running and the input voltage falls
below VIN-UVLO-, the converter recognizes a fault condition, the
powertrain stops switching, and the output voltage of the unit falls.
External Output Capacitance
The DCM converter internal compensation requires a minimum
external output capacitor. An external capacitor in the range of 200
to 2000 µF with ESR of 10 mΩ is required, per DCM for control loop
compensation purposes.
Input voltage transients which fall below UVLO for less than tUVLO
may not be detected by the fault proection logic, in which case the
converter will continue regular operation. No protection is required
in this case.
However some DCM models require an increase to the minimum
external output capacitor value in certain loading and trim
condition. In applications where the load can go below 10ꢀ of rated
load but the output trim is held constant, the range of output
capacitor required is given by COUT-EXT-TRANS in the Electrical
Specifications table. If the load can go below 10ꢀ of rated load and
the DCM output trim is also dynamically varied, the range of output
capacitor required is given by COUT-EXT-TRANS-TRIM in the Electrical
Specifications table.
Once the UVLO fault is detected by the fault protection logic, the
converter shuts down and waits for the input voltage to rise above
V
IN-UVLO+. Provided the converter is still enabled, it will then restart.
Input Overvoltage Fault Protection (OVLO)
The converter’s input voltage is monitored to detect an input over
voltage condition. When the input voltage is more than the
VIN-OVLO+, a fault is detected, the powertrain stops switching, and the
output voltage of the converter falls.
After an OVLO fault occurs, the converter will wait for the input
voltage to fall below VIN-OVLO-. Provided the converter is still enabled,
the powertrain will restart.
Light Load Boosting
Under light load conditions, the DCM converter may operate in light
load boosting depending on the line voltage. Light load boosting
occurs whenever the internal power consumption of the converter
combined with the external output load is less than the minimum
power transfer per switching cycle. In order to maintain regulation,
the error amplifier will switch the powertrain off and on repeatedly,
to effectively lower the average switching frequency, and permit
operation with no external load. During the time when the power
train is off, the module internal consumption is significantly
reduced, and so there is a notable reduction in no-load input power
in light load boosting. When the load is less than 10ꢀ of rated Iout,
the output voltage may rise by a maximum of 4.72 V, above the
output voltage calculated from trim, temperature, and load
line conditions.
The powertrain controller itself also monitors the input voltage.
Transient OVLO events which have not yet been detected by the fault
sequence logic may first be detected by the controller if the input
slew rate is sufficiently large. In this case, powertrain switching will
immediately stop. If the input voltage falls back in range before the
fault sequence logic detects the out of range condition, the
powertrain will resume switching and the fault logic will not
interrupt operation Regardless of whether the powertrain is running
at the time or not, if the input voltage does not recover from OVLO
before tOVLO, the converter fault logic will detect the fault.
Output Undervoltage Fault Protection (UVP)
The converter determines that an output overload or short circuit
condition exists by measuring its primary sensed output voltage and
the output of the internal error amplifier. In general, whenever the
powertrain is switching and the primary-sensed output voltage falls
below VOUT-UVP threshold, a short circuit fault will be registered. Once
an output undervoltage condition is detected, the powertrain
DCM™ DC-DC Converter
Rev 1.0
Page 18 of 23
07/2017
DCM4623xD2N31C8y7z
Thermal Design
Based on the safe thermal operating area shown in page 5, the full
rated power of the DCM4623xD2N31C8y7z can be processed
provided that the top, bottom, and leads are all held below 85°C.
These curves highlight the benefits of dual sided thermal
management, but also demonstrate the flexibility of the Vicor ChiP
platform for customers who are limited to cooling only the top or the
bottom surface.
Thermal Resistance Top
INT-TOP°C / W
MAX INTERNAL TEMP
θ
Thermal Resistance Bottom
INT-BOTTOM°C / W
Thermal Resistance Leads
θ
θINT-LEADS°C / W
+
–
+
–
T
CASE_BOTTOM(°C)
TLEADS(°C)
TCASE_TOP(°C)
Power Dissipation (W)
The OTP sensor is located on the top side of the internal PCB
structure. Therefore in order to ensure effective over-temperature
fault protection, the case bottom temperature must be constrained
by the thermal solution such that it does not exceed the temperature
of the case top.
Figure 18 — One side cooling and leads thermal model
Figure 18 shows a scenario where there is no bottom side cooling.
In this case, the heat flow path to the bottom is left open and the
equations now simplify to:
The ChiP package provides a high degree of flexibility in that it
presents three pathways to remove heat from internal power
dissipating components. Heat may be removed from the top surface,
the bottom surface and the leads. The extent to which these three
surfaces are cooled is a key component for determining the
maximum power that is available from a ChiP, as can be seen from
Figure 17.
TINT – PD1 • θINT-TOP = TCASE_TOP
TINT – PD3 • θINT-LEADS = TLEADS
PDTOTAL = PD1 + PD3
Since the ChiP has a maximum internal temperature rating, it is
necessary to estimate this internal temperature based on a real
thermal solution. Given that there are three pathways to remove heat
from the ChiP, it is helpful to simplify the thermal solution into a
roughly equivalent circuit where power dissipation is modeled as a
current source, isothermal surface temperatures are represented as
voltage sources and the thermal resistances are represented as
resistors. Figure 17 shows the "thermal circuit" for a 4623 ChiP DCM,
in an application where both case top and case bottom, and leads are
cooled. In this case, the DCM power dissipation is PDTOTAL and the
Thermal Resistance Top
INT-TOP°C / W
MAX INTERNAL TEMP
θ
Thermal Resistance Bottom
INT-BOTTOM°C / W
Thermal Resistance Leads
θ
θINT-LEADS°C / W
+
–
T
CASE_BOTTOM(°C)
TLEADS(°C)
TCASE_TOP(°C)
Power Dissipation (W)
three surface temperatures are represented as TCASE_TOP, TCASE_BOTTOM
and TLEADS. This thermal system can now be very easily analyzed
with simple resistors, voltage sources, and a current source.
,
Figure 19 — One side cooling thermal model
Figure 19 shows a scenario where there is no bottom side and leads
cooling. In this case, the heat flow path to the bottom is left open and
the equations now simplify to:
This analysis provides an estimate of heat flow through the various
pathways as well as internal temperature.
TINT – PD1 • θINT-TOP = TCASE_TOP
Thermal Resistance Top
INT-TOP°C / W
MAX INTERNAL TEMP
PDTOTAL = PD1
θ
Thermal Resistance Bottom
INT-BOTTOM°C / W
Thermal Resistance Leads
θ
θINT-LEADS°C / W
+
–
+
–
+
–
T
CASE_BOTTOM(°C)
TLEADS(°C)
TCASE_TOP(°C)
Power Dissipation (W)
Figure 17 — Double side cooling and leads thermal model
Alternatively, equations can be written around this circuit and
analyzed algebraically:
TINT – PD1 • θINT-TOP = TCASE_TOP
TINT – PD2 • θINT-BOTTOM = TCASE_BOTTOM
TINT – PD3 • θINT-LEADS = TLEADS
PDTOTAL = PD1+ PD2+ PD3
Where TINT represents the internal temperature and PD1, PD2, and
PD3 represent the heat flow through the top side, bottom side, and
leads respectively.
Figure 20 — Thermal Specified Operating Area: Max Power
Dissipation vs. Case Temp for current
limited operation
DCM™ DC-DC Converter
Rev 1.0
Page 19 of 23
07/2017
DCM4623xD2N31C8y7z
Vicor provides a suite of online tools, including a simulator and
thermal estimator which greatly simplify the task of determining
whether or not a DCM thermal configuration is sufficient for a given
condition. These tools can be found at:
www.vicorpower.com/powerbench.
DCMs in current limit will operate with higher output current or
power than the rated levels. Therefore the Figure 20 Thermal Safe
Operating Area plot should be used for loads that drive the DCM in
to current limit for sustained operation.
Standalone Operation
The following Figure 21 shows the configuration of the Enhanced
VOUT DCM. An input filter is required to attenuate noise coming from
the input source. In case of the excessive line inductance, a properly
sized decoupling capacitor CDECOUPLE is required as shown
in the following figure.
DCM
R5
TR
+
+
EN
C2
FB1
FT
VTR
R1
L1
R2
R3
VEN
F1
+IN
-IN
+OUT
-OUT
+IN
+OUT
-OUT
L2
R4
1
COUT-EXT
CDECOUPLE
C5
C4
D1
_
_
-IN
Figure 21 — Enhanced VOUT DCM configuration circuit
If signal pins (TR, EN, FT) are not used, they can be left floating, and
DCM will work in the nominal output condition.
When common mode noise in the input side is not a concern, TR and
EN can be driven and FT received using -IN as a reference.
L1: 1 µH, minimized DCR;
R1: 1.0 Ω;
C1: Ceramic capacitors in parallel, C1 = 2 µF;
L2: L2 ≥ 0.15 µH;
R2: 1 Ω;
C
OUT-EXT: electrolytic or tantalum capacitor, 200 µF ≤ C3 ≤2000 µF;
C4, C5: additional ceramic /electrolytic capacitors, if needed for
output ripple filtering;
In order to help sensitive signal circuits reject potential noise,
additional components are recommended:
R5: 301 Ω, facilitate noise attenuation for TR pin;
FB1, C2: FB1 is a ferrite bead with an impedance of at least 10 Ω at
100MHz. C2 can be a ceramic capacitor of 0.1µF. Facilitate noise
attenuation for EN pin.
Note: Use an RCR filter network as suggested in the application note
AN:030 to reduce the noise on the signal pins.
DCM™ DC-DC Converter
Rev 1.0
Page 20 of 23
07/2017
DCM4623xD2N31C8y7z
DCM Module Product Outline Drawing Recommended PCB Footprint and Pinout
47.91 .ꢀ3
1.336 .ꢁ1ꢂ
11.4ꢀ
.4ꢂꢁ
2ꢀ.96
.94ꢀ
1.ꢂ2
.ꢁ6ꢁ
(2) PL.
11.4ꢁ
.449
ꢁ
ꢁ
22.3ꢁ .1ꢀ
.393 .ꢁꢁꢂ
1.ꢁ2
.ꢁ4ꢁ
(ꢀ) PL.
1.ꢂ2
.ꢁ6ꢁ
(4) pl.
TOP VIEW (COMPONENT SIDE)
.ꢁꢂ [.ꢁꢁ2]
7.21 .1ꢁ
.234 .ꢁꢁ4
SEATING
PLANE
4.17
.164
(9) PL.
.41
.ꢁ16
(9) PL.
3.2ꢂ
3.ꢁꢁ
.ꢀ2ꢂ
.ꢀ1ꢂ
2.7ꢂ
.1ꢁ3
1.ꢀ3
.ꢁꢂ4
ꢁ
ꢁ
1.ꢀ3
.ꢁꢂ4
2.7ꢂ
.1ꢁ3
4.1ꢀ
.162
3.ꢁꢁ
.ꢀ1ꢂ
3.2ꢂ
.ꢀ2ꢂ
BOTTOM VIEW
1.ꢂ2
.ꢁ6ꢁ
PLATED THRU
.2ꢂ [.ꢁ1ꢁ]
ANNULAR RING
(ꢀ) PL.
3.2ꢂ .ꢁ3
.ꢀ2ꢂ .ꢁꢁꢀ
3.ꢁꢁ .ꢁ3
.ꢀ1ꢂ .ꢁꢁꢀ
+OUT
+IN
2.7ꢂ .ꢁ3
.1ꢁ3 .ꢁꢁꢀ
-OUT
1.ꢀ3 .ꢁ3
.ꢁꢂ4 .ꢁꢁꢀ
TR
EN
FT
ꢁ
ꢁ
1.ꢀ3 .ꢁ3
.ꢁꢂ4 .ꢁꢁꢀ
2.7ꢂ .ꢁ3
.1ꢁ3 .ꢁꢁꢀ
+OUT
4.1ꢀ .ꢁ3
.162 .ꢁꢁꢀ
3.ꢁꢁ .ꢁ3
.ꢀ1ꢂ .ꢁꢁꢀ
3.2ꢂ .ꢁ3
.ꢀ2ꢂ .ꢁꢁꢀ
-IN
-OUT
2.ꢁꢀ
.ꢁ3ꢁ
PLATED THRU
.2ꢂ [.ꢁ1ꢁ]
2.ꢁꢀ
.ꢁ3ꢁ
PLATED THRU
.ꢀ3 [.ꢁ1ꢂ]
RECOMMENDED HOLE PATTERN
(COMPONENT SIDE)
ANNULAR RING
ANNULAR RING
(2) PL.
(4) PL.
NOTES:
1- RoHS COMPLIANT PER CST-ꢁꢁꢁ1 LATEST REVISION.
DCM™ DC-DC Converter
Rev 1.0
Page 21 of 23
07/2017
DCM4623xD2N31C8y7z
Revision History
Revision
Date
Description
Page Number(s)
1.0
07/24/17
Initial release
n/a
DCM™ DC-DC Converter
Rev 1.0
Page 22 of 23
07/2017
DCM4623xD2N31C8y7z
Vicor’s comprehensive line of power solutions includes high density AC-DC and DC-DC modules and
accessory components, fully configurable AC-DC and DC-DC power supplies, and complete custom
power systems.
Information furnished by Vicor is believed to be accurate and reliable. However, no responsibility is assumed by Vicor for its use. Vicor
makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. Vicor reserves
the right to make changes to any products, specifications, and product descriptions at any time without notice. Information published by
Vicor has been checked and is believed to be accurate at the time it was printed; however, Vicor assumes no responsibility for inaccuracies.
Testing and other quality controls are used to the extent Vicor deems necessary to support Vicor’s product warranty. Except where
mandated by government requirements, testing of all parameters of each product is not necessarily performed.
Specifications are subject to change without notice.
Visit http://www.vicorpower.com/dc-dc/isolated-regulated/dcm for the latest product information.
Vicor’s Standard Terms and Conditions and Product Warranty
All sales are subject to Vicor’s Standard Terms and Conditions of Sale, and Product Warranty which are available on Vicor’s webpage
(http://www.vicorpower.com/termsconditionswarranty) or upon request.
Life Support Policy
VICOR’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE
EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF VICOR CORPORATION. As used
herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and
whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to
result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform
can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. Per Vicor Terms
and Conditions of Sale, the user of Vicor products and components in life support applications assumes all risks of such use and indemnifies
Vicor against all liability and damages.
Intellectual Property Notice
Vicor and its subsidiaries own Intellectual Property (including issued U.S. and Foreign Patents and pending patent applications) relating to
the products described in this data sheet. No license, whether express, implied, or arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Interested parties should contact Vicor’s Intellectual Property Department.
The products described on this data sheet are protected by the following U.S. Patents Numbers:
RE40,072; 7,561,446; 7,920,391; 7,782,639; 8,427,269; 6,421,262 and other patents pending.
Contact Us: http://www.vicorpower.com/contact-us
Vicor Corporation
25 Frontage Road
Andover, MA, USA 01810
Tel: 800-735-6200
Fax: 978-475-6715
www.vicorpower.com
email
Customer Service: custserv@vicorpower.com
Technical Support: apps@vicorpower.com
©2017 Vicor Corporation. All rights reserved. The Vicor name is a registered trademark of Vicor Corporation.
All other trademarks, product names, logos and brands are property of their respective owners.
DCM™ DC-DC Converter
Rev 1.0
Page 23 of 23
07/2017
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