DCM3414B50M13C2M09_技术文档

DCM^™in a VIA Package

DC-DC Converter

DCM3414x50M13C2yzz

S

®

C

US

C

NRTL US

Isolated, Regulated DC Converter

Features & Beneﬁts

Product Ratings

V_IN= 16 V to 50 V

P_OUT= 320 W

• Isolated, regulated DC-to-DC converter

• Up to 320 W, 26.67 A continuous

• 91.7% peak efficiency

V_OUT= 12.0 V

(7.2 V to 13.2 V Trim)

I_OUT= 26.67 A

• 183 W/in³Power density

Product Description

• Wide input range 16 – 50 Vdc

The DCM in a VIA package is an Isolated, Regulated DC-to-DC

Converter, operating from an unregulated, wide range input to

generate an isolated 12.0 Vdc output. With its high frequency

zero voltage switching (ZVS) topology, the DCM converter

consistently delivers high eﬃciency across the input line range.

The DCM provides tight output voltage regulation and oﬀers a

secondary-referenced control interface for trim, enable, and

remote sense operation. 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.

• Safety Extra Low Voltage (SELV) 12.0 V Nominal Output

• ZVS high frequency switching

• Allows remote sense or local sense operation

• Tight regulation over all line and load conditions

• Fully operational current limit

• OV, OC, UV, short circuit and thermal protection

• Available in chassis mount and through hole VIA package

n 3.380” x 1.400” x 0.370”

The VIA package oﬀers ﬂexible thermal management options

with very low top and bottom side thermal impedances.

(85.93 mm x 35.5 mm x 9.40 mm)

Typical Applications

• Industrial

• Process Control

• Heavy Equipment

• Defense / Aeorspace

Size:

3.380 x 1.400 x 0.370 in

85.93 x 35.5 x 9.40 mm

Part Ordering Information

Max

Input

Voltage

Max

Output Output

Voltage Power

Max

Product

Function

Package

Length

Package

Width

Package

Type

Range

Ratio

Product Grade

(Case Temperature)

Option Field

DCM

34

14

x

50

M

13

C2

y

z

DCM =

DC-DC

Converter

C = -20 to 100°C^[1]

T = -40 to 100°C^[1]

01 = Chassis/Analog

05 = Short Pin/Analog

Length in

Width in

B = Board VIA

Internal Reference

Inches x 10 Inches x 10 V = Chassis VIA

M = -55 to 100°C^[1][2]09 = Long Pin/Analog

^[1]High Temperature Power Derating may apply, see Thermal Speciﬁed Operating Area, Figure 1 on Page 4.

^[2]M-Grade available on selected models. Consult vicorpower.com for details.

DCM^™in a VIA Package

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Typical Application

Load 1

DCM^TMin a VIA package

F

+IN

-IN

+OUT

VDDE

EN

TR

-SENSE

V_IN

Non-isolated

Point-of-Load

Regulator

C

C_OUT-EXT

+SENSE

-OUT

Load 2

Typical Application: Single DCM3414x50M13C2yzz in Local Sense Operation, to a non-isolated regulator, and direct to load

DCM^™in a VIA Package

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Pin Conﬁguration

TOP VIEW

+IN

–IN

1

2

+OUT

3

5

6

7

8

9

VDDE

EN

TR

–SENSE

+SENSE

4

–OUT

DCM in a VIA package - Chassis Mount

TOP VIEW

–IN

+IN

2

1

–OUT

4

9

8

7

6

5

+SENSE

–SENSE

TR

EN

VDDE

3

+OUT

DCM in a VIA package - PCB Mount

Note: The dot on the VIA housing indicates the location of the control pin 9 (+SENSE pin).

Pin Descriptions

Signal Name

Type

Function

Number

1

+IN

–IN

INPUT POWER

Positive input power terminal

Negative input power terminal

INPUT POWER

RETURN

2

3

4

+OUT

–OUT

OUTPUT POWER Positive output power terminal

OUTPUT POWER

Negative output power terminal

RETURN

5

6

7

VDDE

EN

POWER INPUT

External power supply for internal controller

CONTROL INPUT Enables and disables DCM. Needs VDDE preapplied

TR

CONTROL INPUT Enables and disables trim functionality. Adjusts output voltage when trim active.

Negative sense pin, required for Remote Sense Operation. In Local Sense

CONTROL INPUT

8

9

–SENSE

+SENSE

Operation, it can be tied directly to –OUT to achieve better regulation accuracy.

Positive sense pin, required for Remote Sense Operation. In Local Sense

CONTROL INPUT

Operation, it can be tied directly to +OUT to achieve better regulation accuracy.

Note: All control inputs (EN, TR, –SENSE, +SENSE) are referenced to the secondary of the DCM and isolated from the primary.

DCM^™in a VIA Package

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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

Max

65

Unit

V

Input Voltage (+IN to –IN)

Input Voltage (+IN to –IN)*

Input Voltage Slew Rate

TR to –OUT

C Grade, T Grade

M Grade (continuous absolute maximum input voltage)**

52

V

1

V/µs

V

-0.5

0

3.6

EN to –OUT

3.6

V

VDDE to –OUT

12

V

–SENSE to –OUT

0

2.225

15.6

16.3

V

+OUT to +SENSE

0

V

+SENSE to –OUT

0

V

Output Voltage (+Out to –Out)

Dielectric withstand (input to output)

-0.5

1500

-20

-40

-55

-20

-40

-65

V

Vdc

°C

A

C Grade

T Grade

M Grade

C Grade

T Grade

M Grade

125

26.7

Internal Operating Temperature

Storage Temperature

Average Output Current

^*LVMFM + 16 – 50 V input range products guarantees MIL-STD 461E/F & MIL-STD 1275 D/E.

** Applicable only for 16 – 50 V input range products.

Figure 1 — Thermal Specified Operating Area: Max Output Power

Figure 2 — Electrical Specified Operating Area

vs. Case Temp, Single unit at minimum full load efficiency

DCM^™in a VIA Package

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Electrical Speciﬁcations

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade.

Attribute

Symbol

Conditions / Notes

Min

16

Typ

28

Max

Unit

Power Input Speciﬁcation

Input voltage range

V_IN

I_INRP

Continuous operation

50

V

A

Inrush current (peak)

With maximum C_OUT-EXT, full resistive load

Effective value at nominal input voltage

At 1 MHz

30.0

Input capacitance (internal)

Input capacitance (internal) ESR

Input inductance (external)

C_IN-INT

R_CIN-INT

L_IN

42.0

0.73

µF

mΩ

µH

Differential mode, with no further line bypassing

No Load Speciﬁcation

1

Nominal line, see Fig. 3

0.5

1.5

0.7

0.8

5.0

7.0

W

Input power – disabled

P_Q

Worst case line, see Fig. 3

Nominal line, see Fig. 4

Input power – enabled with no load

P_NL

Worst case line, see Fig. 4

Power Output Speciﬁcation

Output voltage set point

V_OUT-NOM

11.94

12.0

12.06

V

Trim range over temp.

Speciﬁes the Low, Nominal and High Trim conditions.

Rated output voltage trim range

V_OUT-TRIMMING

7.2

12.0

13.2

Total output voltage setpoint accuracy for all line

conditions and for all load conditions above 10%

of rated load, with trim inactive and SENSE pins

connected (either at the load for remote sense, or at

the DCM output for local sense)

%V_OUT-

V_OUTaccuracy

0.5

1.0

%

ACCURACY

Total output voltage setpoint accuracy for all line

conditions and for all load conditions above 10%

of rated load, with trim inactive and Sense Pins

ﬂoating (Local Sense only)

V_OUTaccuracy with Sense Pins

ﬂoating

%V_OUT-

ACCURACY-SF

Total output voltage setpoint accuracy for all line

conditions and for all load conditions above 10%

of rated load, with trim active

%V_OUT-

V_OUTaccuracy with trim active

V_OUTaccuracy light load

2.0

5.0

%

ACCURACY-TRIM

Total output voltage setpoint accuracy for all line and

trim conditions, for load conditions below or equal to

10% of rated load

%V_OUT-

ACCURACY-LL

Rated output power

Rated output current

P_OUT

I_OUT

Continuous, V_OUT≥ 12.0 V

Continuous, V_OUT≤ 12.0 V

320

W

A

26.67

Of rated I_OUTmax. Fully operational current limit, for

nominal trim and below

Output current limit

Current limit delay

I_OUT-LM

103

115

135

%

t_IOUT-LIM

The module will power limit in a fast transient event

Full load, nominal line, nominal trim

1

ms

%

90.3

87.0

85.0

91.5

Efﬁciency

η

Full load, over line and temperature, nominal trim

50% load, over rated line, temperature and trim

Over all operating steady-state line, load and trim

conditions, 20 MHz BW, with minimum C_OUT-EXT

Output voltage ripple

V_OUT-PP

180

mV

Output capacitance (internal)

C_OUT-INT

Effective value at nominal output voltage

At 1 MHz

201

µF

Output capacitance (internal) ESR

R_COUT-INT

0.07

mΩ

DCM^™in a VIA Package

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Electrical Speciﬁcations (cont.)

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade.

Attribute

Symbol

Conditions / Notes

Min

Typ

Max

Unit

Power Output Speciﬁcations (Cont.)

Excludes component temperature coefﬁcient. For load

transients that remain > 2% rated load

Output capacitance (external)

C_OUT-EXT

1000

10000

µF

C_OUT-EXT-

TRANSIENT

R_COUT-EXT

Excludes component temperature coefﬁcient. For load

transients down to 0% rated load

10000

10

Output capacitance, ESR (ext.)

Initialization delay

At 10 kHz, excludes component tolerances

See state diagram

mΩ

ms

t_INIT

t_ON

25

40

From rising edge EN, with VDDE pre-applied.

See timing diagram

Output turn-on delay

Output turn-off delay

200

µs

t_OFF

t_SS

From falling edge EN. See timing diagram

600

6.0

µs

Soft start ramp time

V_OUTthreshold for max

rated load current

Full load (soft-start ramp time) with minimum C_OUT-EXT

During startup, V_OUTmust achieve this threshold before

300

ms

V_{OUT-FL-THRESH}

I_OUT-START

V_{OUT-MONOTONIC}

V

A

output can support full rated current

Max load current at startup while V_OUT

I_OUTat startup

2.66

is below V_{OUT-FL-THRESH}

Monotonic soft-start threshold

voltage

Output voltage rise becomes monotonic with 1% of

preload once it crosses V_{OUT-MONOTONIC}

6.0

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

t_OFF-MIN

ms

This refers to the minimum time a module needs to be in

t_{OFF-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

%V_OUT-TRANS

<10

2.0

%

Minimum C_{OUT_EXT}(10 ↔ 90% load step)

t_SETTLE

ms

Powertrain Protections

Input Voltage Initialization threshold

Input Voltage Reset threshold

Input undervoltage lockout threshold

Input undervoltage recovery threshold

Input overvoltage lockout threshold*

Input overvoltage recovery threshold*

Output overvoltage threshold

Minimum current limited V_OUT

Overtemperature threshold (internal)

Power limit

V_IN-INIT

V_IN-RESET

V_IN-UVLO-

V_IN-UVLO+

V_IN-OVLO+

V_IN-OVLO-

V_OUT-OVP

V_OUT-UVP

T_INT-OTP

Threshold to start t_INITdelay

6.0

V

Latching faults will clear once V_INfalls below V_IN-RESET

3.0

12.0

14.0

16.0

55.0

V

See Timing diagram

V

See Timing diagram

50.0

15.6

V

Latched shutdown

V

Over all operating steady-state line and trim conditions

4.2

V

130.0

°C

W

P_LIM

630.0

V_INovervoltage to cessation of

powertrain switching

t_OVLO-SW

Independent of fault logic

For fault logic only

1.5

µs

V_INovervoltage response time

V_INundervoltage response time

Short circuit response time

t_OVLO

t_UVLO

t_SC

200

100

200

µs

ms

µs

Powertrain on, operational state

See Timing diagram

Short circuit, or temperature fault

recovery time

t_FAULT

1

s

^*Input OVLO protection speciﬁcations do not apply for 16 – 50 V input range M Grade products.

DCM^™in a VIA Package

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Signal Speciﬁcations

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade. Please note: For chassis mount models, Vicor part number 42550 will be needed for applications

requiring the use of signal pins (Enable, Trim and Sense functions).^[2]

Enable: EN

• The EN pin enables and disables the DCM; when held low the unit will be disabled.

• The EN pin is activated only if VDDE is preapplied before V_INis applied. Otherwise, EN is inactive and will be ignored until V_INis removed and reapplied.

Additonally, if VDDE is removed at any time, EN will return to inactive mode.

• The EN pin is referred to the –OUT of the converter and isolated from the primary side

SIGNAL TYPE

STATE

ATTRIBUTE

EN enable threshold

EN disable threshold

Internally generated V_CC

SYMBOL

V_ENABLE-EN

V_ENABLE-DIS

V_CC

CONDITIONS / NOTES

MIN NOM MAX UNIT

2.31

V

Needs VDDE preapplied

0.99

DIGITAL

INPUT

Any

3.23 3.30 3.37

0.990 1.000 1.010

EN internal pull up

resistance to V_CC

R_ENABLE-INT

kΩ

Trim: TR

• The TR pin enables and disables trim functionality when V_INis initially applied to the DCM converter.

When Vin ﬁrst crosses V_IN-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 250 Hz of -3dB control bandwidth over the output voltage of the

DCM converter.

• The TR pin has an internal pull-up to V_CCand is referenced to the –OUT pin of the converter.

• V_TRIM-RANGErepresents the trim pin functional limits only. Module performance is guaranteed within rated output voltage trim range V_OUT-TRIMMING

,

see electrical speciﬁcation on page 5.

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

V_TRIM-DIS

3.20

V

DIGITAL

INPUT

Startup

Trim enabled when TR below this threshold

at power up

TR trim enable threshold

V_TRIM-EN

3.10

Internally generated V_CC

TR pin functional range

V_CC

3.23 3.30 3.37

V

V_TRIM-RANGE

Functional limits only

With V_CC= 3.3 V

0.00 2.37 3.10

Operational

with Trim

enabled

ANALOG

INPUT

V_OUTreferred TR

pin resolution

V_OUT-RES

R_TRIM-INT

8.79

mV

TR internal pull up

resistance to V_CC

0.999 1.000 1.001

kΩ

VDDE

• VDDE powers the internal controller.

• VDDE needs to be preapplied before V_INin order to activate EN functionalities.

• If not preapplied, VDDE is derived from V_OUT; however, in this case, the enable function is not activated (the unit is always enabled and can be disabled

only by removing V_IN.)

• If VDDE is removed during operation, the unit will return in"always enabled" mode, ignoring the EN pin until VDDE is reapplied and V_INis cycled.

SIGNAL TYPE

STATE

ATTRIBUTE

SYMBOL

CONDITIONS / NOTES

MIN NOM MAX UNIT

Power input for internal

controller

VDDE

4

5

10

50

V

POWER

INPUT

Any

VDDE current

consumption

I_VDDE

35

mA

^[2]Signal cable 42550 is rated for up to 5 insertions and extractions. To avoid unnecessary stress on the connector, the cable should be tied to the chassis.

DCM^™in a VIA Package

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Signal Speciﬁcations (Cont.)

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade. Please note: For chassis mount models, Vicor part number 42550 will be needed for applications

requiring the use of signal pins (Enable, Trim and Sense functions).

+SENSE, –SENSE

• Provide Remote Sense capability.

• If ﬂoating, the DCM automatically implements Local Sense Operation. To achieve maximum regulation accuracy in local sense, the SENSE

pins should be connected directly to their respective OUT pins. If SENSE pins are ﬂoating, the regulation accuracy degrades

(see “V_OUTaccuracy with Sense Pins ﬂoating” on Page 5).

DCM^TMin a VIA package

R_LINE

L_LINE

+

+SENSE

-SENSE

+

L

O

A

D

V_LOAD

V_OUT

C_OUT-EXT

-

L_LINE

R_LINE

• Module performance is guaranteed for ΔV_{OUT_TO_LOAD}within rated limits speciﬁed below. For ΔV_{OUT_TO_LOAD}higher than the speciﬁed limits, regulation

accuracy is not guaranteed. Also, high ΔV_{OUT_TO_LOAD}might trigger OVP (for above nominal trim conditions), and might cause load voltage runaway

(which might trigger UVP).

ATTRIBUTE

SYMBOL

CONDITIONS / NOTES

MIN

NOM

MAX

UNIT

Rated voltage drop between DCM package output

and sense point at the load, in Remote Sense

Operation. Module performance is guaranteed for

ΔV_{OUT_TO_LOAD}below this threshold.

Remote Sense rated Voltage Drop

ΔV_{OUT_TO_LOAD}

120

mV

DCM^™in a VIA Package

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Timing Diagrams

Module Inputs are shown in blue; Module Outputs are shown in brown. Timing diagrams assume VDDE pre-applied. Without

VDDE pre-applied, EN is ignored, EN and Trim will go high after V_OUT. All other behaviors (OVLO, UVLO, OVP, etc.)

will remain the same.

DCM^™in a VIA Package

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Timing Diagrams (Cont.)

Module Inputs are shown in blue; Module Outputs are shown in brown. Timing diagrams assume VDDE pre-applied. Without

VDDE pre-applied, EN is ignored, EN and Trim will go high after V_OUT. All other behaviors (OVLO, UVLO, OVP, etc.)

will remain the same.

DCM^™in a VIA Package

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Typical Performance Characteristics

The following figures present typical performance at T_C= 25ºC, unless otherwise noted. See associated figures for general trend data.

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Figure 3 — Disabled power dissipation vs. V_IN

Figure 6 — 10% to 100% load transient response, V_IN= 28 V,

nominal trim, C_{OUT_EXT}= 1000 µF

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Figure 7 — Full Load Efficiency vs. V_IN, at low trim

Figure 4 — No load power dissipation vs. V_IN, at nominal trim

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Figure 5 — 100% to 10% load transient response, V_IN= 28 V,

Figure 8 — Full Load Efficiency vs. V_IN, at nominal trim

nominal trim, C_{OUT_EXT}= 1000 µF

DCM^™in a VIA Package

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Typical Performance Characteristics (cont.)

The following figures present typical performance at T_C= 25ºC, unless otherwise noted. See associated figures for general trend data.

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ꢀ

ꢁ

ꢂꢀ

ꢂꢁ

ꢃꢀ

ꢃꢁ

ꢅꢃ

ꢆꢄ

ꢆꢃ

ꢇꢄ

ꢇꢃ

ꢈꢄ

ꢈꢃ

ꢃꢄ

ꢕꢁꢊꢖꢅꢗꢘꢄꢄꢃꢌꢋꢅꢍꢙꢏ

ꢋꢅꢌꢍꢎꢇꢏꢐꢑꢎꢒꢓꢄꢇꢈꢏꢊ

ꢁꢀꢊꢀꢋ

ꢃꢆꢊꢀꢋ

ꢂꢇꢊꢀꢋ

ꢀꢄꢉꢊ

ꢆꢃꢉꢊ

ꢋꢈꢄꢉꢊ

Figure 12 — Efficiency (top three curves) and power dissipation

(bottom three curves) vs.load at T_CASE= 80°C, nominal trim

Figure 9 — Full Load Efficiency vs. V_IN, at high trim

ꢉꢅ

ꢉꢃ

ꢉꢀ

ꢇꢇ

ꢇꢈ

ꢇꢅ

ꢇꢃ

ꢇꢀ

ꢆꢇ

ꢅꢀ

ꢄꢁ

ꢄꢀ

ꢃꢁ

ꢃꢀ

ꢂꢁ

ꢂꢀ

ꢁ

ꢈꢀꢀ

ꢇꢀꢀ

ꢆꢀꢀ

ꢅꢀꢀ

ꢄꢀꢀ

ꢃꢀꢀ

ꢂꢀꢀ

ꢁꢀꢀ

ꢀ

ꢄꢀ

ꢀ

ꢁ

ꢂꢀ

ꢂꢁ

ꢃꢀ

ꢃꢁ

ꢅꢀ

ꢆꢀ

ꢇꢀ

ꢈꢀ

ꢉꢀ

ꢁꢀꢀ

ꢕꢁꢊꢖꢅꢗꢘꢄꢄꢃꢌꢋꢅꢍꢙꢏ

ꢔꢕꢖꢗꢈꢏꢘꢓ

ꢁꢀꢊꢀꢋ

ꢃꢇꢊꢀꢋ

ꢂꢈꢊꢀꢋ

ꢅꢀꢊꢀꢋꢌ

ꢂꢈꢊꢀꢋꢌ

ꢁꢆꢊꢀꢋꢌ

Figure 10 — Efficiency (top three curves) and power dissipation

Figure 13 — Nominal powertrain switching frequency vs. load,

(bottom three curves) vs.load at T_CASE= -40°C, nominal trim

at nominal trim

ꢉꢅ

ꢉꢃ

ꢉꢀ

ꢇꢇ

ꢇꢈ

ꢇꢅ

ꢇꢃ

ꢇꢀ

ꢆꢇ

ꢅꢀ

ꢄꢁ

ꢄꢀ

ꢃꢁ

ꢃꢀ

ꢂꢁ

ꢂꢀ

ꢁ

ꢀ

ꢄꢀ

ꢀ

ꢁ

ꢂꢀ

ꢂꢁ

ꢃꢀ

ꢃꢁ

ꢕꢁꢊꢖꢅꢗꢘꢄꢄꢃꢌꢋꢅꢍꢙꢏ

ꢁꢀꢊꢀꢋ

ꢃꢇꢊꢀꢋ

ꢂꢈꢊꢀꢋ

Figure 11 — Efficiency (top three curves) and power dissipation

(bottom three curves) vs.load at T_CASE= 25°C, nominal trim

Figure 14 — Effective internal input capacitance vs. applied voltage

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DCM3414x50M13C2yzz

Typical Performance Characteristics (cont.)

The following figures present typical performance at T_C= 25ºC, unless otherwise noted. See associated figures for general trend data.

Figure 15 —Startup from EN, V_IN= 28 V, C_{OUT_EXT}= 10000 µF,

R

_LOAD= 0.450 Ω

ꢈꢀꢀ

ꢇꢀꢀ

ꢆꢀꢀ

ꢅꢀꢀ

ꢄꢀꢀ

ꢃꢀꢀ

ꢂꢀꢀ

ꢁꢀꢀ

ꢀ

ꢅꢀ

ꢆꢀ

ꢇꢀ

ꢈꢀ

ꢉꢀ

ꢁꢀꢀ

ꢔꢕꢖꢗꢈꢏꢘꢓ

ꢊꢋꢌꢍꢎꢏꢐꢋꢑ

ꢒꢓꢑꢎꢏꢐꢋꢑ

ꢔꢓꢕꢎꢏꢐꢋꢑ

Figure 16 — Nominal powertrain switching frequency vs. load,

at nominal V_IN

Figure 17 — Output voltage ripple, V_IN= 28 V,

V

_OUT= 12.0 V, C_{OUT_EXT}= 1000 µF, R_LOAD= 0.450 Ω

DCM^™in a VIA Package

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General Characteristics

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade.

Attribute

Symbol

Conditions / Notes

Mechanical ^[3]

Min

Typ

Max

Unit

Length

Width

L

W

H

85.68/[3.37]

35.29/[1.39]

9.02/[0.355]

85.93/[3.38] 86.18/[3.3900] mm/[in]

35.54/[1.4]

9.4/[0.37]

35.79/[1.41]

9.78/[0.385]

mm/[in]

cm³/[in³]

g/[oz]

Height

Volume

Weight

Vol

W

No heat sink

28.40/[1.75]

101.0/[3.56]

Pin Material

Underplate

C145 copper

Low stress ductile Nickel

Palladium

50

0.8

100

6

µin

Pin Finish (Gold)

Pin Finish (Tin)

Soft Gold

0.12

200

2

Whisker resistant matte Tin

400

Thermal

C-Grade

T-Grade

M-Grade

-20

-40

-55

125

°C

Operating internal temperature ^[5]

T_INT

Estimated thermal resistance to maximum

temperature internal component from

isothermal top housing

Thermal resistance top side

Thermal resistance housing

θ_{INT_TOP}

θ_HOU

1.31

0.55

°C/W

Estimated thermal resistance from

top housing to bottom housing

Estimated thermal resistance to

maximum temperature internal

component from isothermal bottom

housing

Thermal resistance bottom side

Thermal capacity

θ_{INT_BOT}

2.33

35.0

°C/W

Ws/°C

Assembly

C-Grade

T-Grade

M-Grade

-20

-40

-65

125

°C

Storage temperature

ESD rating

T_ST

Method per Human Body Model Test

ESDA/JEDEC JDS-001-2012

HBM

CDM

CLASS 1C

CLASS 2

V

Charged Device Model JESD22-C101E

Soldering ^[4]

For further information, please contact

factory applications

Peak temperature top case

130

°C

^[3]Product appearance may change over time depending upon environmental exposure. This change has no impact on product performance.

^[4]Product is not intended for reﬂow solder attach.

^[5]Temeperature refers to the internal operation of the DCM VIA. For maximum case temperature, please refer to ﬁgure 1.

DCM^™in a VIA Package

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DCM3414x50M13C2yzz

General Characteristics (Cont.)

Specifications apply over all line, trim and load conditions, internal temperature T_INT= 25ºC, unless otherwise noted. Boldface specifications apply over the

temperature range specified by the product grade.

Attribute

Symbol

Conditions / Notes

Safety

Min

Typ

Max

Unit

IN to OUT

1500

707

Vdc

Dielectric Withstand Test

V_HIPOT

IN to CASE

OUT to CASE

Reliability

MIL-HDBK-217Plus Parts Count - 25°C

Ground Benign, Stationary, Indoors /

Compute

1.70

2.20

MHrs

MTBF

Telcordia Issue 2 - Method I Case III; 25°C

Ground Benign, Controlled

Agency Approvals

cTÜVus, EN 60950-1

UL 60950-1

Agency approvals/standards

cURus,

CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable

DCM^™in a VIA Package

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DCM3414x50M13C2yzz

Pin Functions

Design Guidelines

Building Blocks and System Design

+IN, -IN

Input power pins.

The DCM converter input accepts the full 16.0 to 50.0 V range, and it

generates an isolated trimmable 12.0 Vdc output.

The DCM converter provides a tightly regulated output voltage. With

trim inactive (TR pin floating), regulation accuracy is within 0.5% of

the setpoint for all line conditions and for any load above 10% of the

rated load. With trim active, regulation accuracy is within 2.0% for

all line conditions and for any load condition above 10%

of the rated load.

+OUT, -OUT

Output power pins. –Out also serves as reference for the secondary-

referenced control pins.

EN (Enable)

This pin enables and disables the DCM converter; when held low the

unit will be disabled. It is referenced to the -OUT pin of the converter.

EN is active only if VDDE is preapplied before V_INis applied.

Otherwise, EN is inactive and will be ignored until V_INis removed

and reapplied.

The DCM3414x50M13C2yzz is designed to be used in applications

where the output power requirements are up to 320 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.

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 V_CCand the module will be enabled.

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.

During soft-start, the maximum load current capability is reduced.

Until Vout achieves at least V_{OUT-FL-THRESH}, the output current must be

less than I_OUT-STARTin order to guarantee startup. Note that this is

current available to the load, above that which is required to charge

the output capacitor.

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 V_CC

The DCM package will latch trim behavior at application of V_IN(once

_INexceeds V_IN-UVLO+), and persist in that same behavior until loss of

.

Trim Mode and Output Trim Control

When the input voltage is initially applied to a DCM, and after t_INIT

elapses, the trim pin voltage V_TRis sampled. The TR pin has an

internal pull up resistor to V_CC, so unless external circuitry pulls the

pin voltage lower, it will pull up to V_CC. If the initially sampled trim

pin voltage is higher than V_TRIM-DIS, then the DCM will disable

trimming as long as the V_INremains 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 V_OUT, and also

provides the best output setpoint accuracy, as there are no additional

errors from external trim components.

V

input voltage.

n At application of V_IN, if TR is sampled at above V_TRIM-DIS, the

module will latch in a non-trim mode, and will ignore the TR

input for as long as V_INis present.

n At application of V_IN, if TR is sampled at below V_TRIM-EN, the TR

will serve as an input to control the real time output voltage. It

will persist in this behavior until V_INis no longer present.

If trim is active when the DCM is operating, the TR pin provides

dynamic trim control at a typical 250 Hz of -3dB bandwidth over the

output voltage. TR also decreases the current limit threshold when

If at initial application of V_IN, the TR pin voltage is prevented from

exceeding V_TRIM-EN, then the DCM will activate trim mode, and it will

remain active for as long as V_INis applied.

trimming above V_OUT-NOM

.

+SENSE, –SENSE

V

_OUTset point can be calculated using the equation below:

These pins are Remote Sense pins, which allow the users to sense the

voltage at the point of load so that the DCM can use the load voltage

to regulate its output voltage accordingly. If “+SENSE” and “–SENSE”

are floating, Local Sense is implemented automatically.

V_OUT-TRIMMING= 6.600 + (7.512 • V_TR/V_CC

)

(1)

Note that the trim mode is not changed when a DCM recovers from

any fault condition or being disabled.

However, when SENSE pins are floating, the regulation accuracy

deteriorates (see "V_OUTaccuracy with Sense pin floating" on

Page 5). To achieve maximum regulation accuracy, the SENSE pins

should be used also for local sense operation, by connecting them

directly to their respective OUT pins (+SENSE to +OUT and

-SENSE to -OUT).

Module performance is guaranteed through output voltage trim

range V_OUT-TRIMMING. If V_OUTis trimmed above this range, then certain

combinations of line and load transient conditions may trigger the

output OVP.

Please note: For chassis mount models, Vicor part number 42550

will be needed for applications requiring the use of signal pins

(Enable, Trim and Sense functions).

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

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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 115%

of rated output current, but it can vary between 103% to 135%. 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.

Fault Handling

Input Undervoltage Fault Protection (UVLO)

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

V_IN-UVLO+. If the converter is running and the input voltage falls

below V_IN-UVLO-, the converter recognizes a fault condition, the

powertrain stops switching, and the output voltage of the unit falls.

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.

Input voltage transients which fall below UVLO for less than t_UVLO

may not be detected by the fault protection logic, in which case the

converter will continue regular operation. No protection is required

in this case.

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.

Sustained operation in current limit is permitted, and no derating of

output power is required.

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

Current limit can reduce the output voltage to as little as the UVP

threshold (V_OUT-UVP). Below this minimum output voltage

compliance level, further loading will cause the module to shut

down due to the output undervoltage fault protection.

V_IN-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 V_IN-OVLO-. Provided the converter is still enabled,

the powertrain will restart.

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.

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 t_OVLO, the converter fault logic will detect the fault.

Excessive source impedance can bring about system stability issues

for a regulated DC-DC converter, and must either be avoided or

compensated. A 1000 µF input capacitor is the minimum

recommended in case the source impedance is insufficient to satisfy

stability requirements.

Additional information can be found in the filter design application

note:

www.vicorpower.com/documents/application_notes/vichip_appnote23.pdf

Output Undervoltage Fault Protection (UVP)

Please refer to this input filter design tool to ensure input stability:

http://app2.vicorpower.com/filterDesign/intiFilter.do.

The converter determines that an output overload or short circuit

condition exists by measuring its output voltage and the output of

the internal error amplifier. In general, whenever the powertrain is

switching and the output voltage falls below V_OUT-UVPthreshold, a

short circuit fault will be registered. Once an output undervoltage

condition is detected, the powertrain immediately stops switching,

and the output voltage of the converter falls. The converter remains

disabled for a time t_FAULT. Once recovered and provided the converter

is still enabled, the powertrain will again enter the soft start

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.

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:

sequence after t_INITand t_ON

.

Temperature Fault Protections (OTP)

The fault logic monitors the internal temperature of the converter. If

the measured temperature exceeds T_INT-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 t_FAULT. Then, the converter waits for

the internal temperature to return to below T_INT-OTPbefore

recovering. Provided the converter is still enabled, the DCM will

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

n Breaking capacity per application requirements

n Nominal melting I²t

restart after t_INITand t_ON

.

n Recommended fuse: See Agency Approvals for Recommended Fuse

http://www.vicorpower.com

DCM^™in a VIA Package

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Output Overvoltage Fault Protection (OVP)

n

Single side cooling: the model of Figure 18 can be simpliﬁed by

calculating the parallel resistor network and using one simple

thermal resistance number and the internal power dissipation

curves; an example for bottom side cooling only is shown in

Figure 19.

The converter monitors the output voltage during each switching

cycle. If the output voltage exceeds V_OUT-OVP, the OVP fault protection

is triggered. The control logic disables the powertrain, and the output

voltage of the converter falls.

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

power such that the input voltage falls below V_IN-INIT

.

θ_INT

External Output Capacitance

+ T_{C_BOT}

The DCM converter internal compensation requires a minimum

external output capacitor. An external capacitor in the range of 1000

to 10000 µF with ESR of 10 mΩ is required for control loop

compensation purposes.

s

P_DISS

However some DCM models require an increase to the minimum

external output capacitor value in certain loading condition. In

applications where the load can go below 2% of rated load, the range

of output capacitor required is given by

s

C

_{OUT-EXT-TRANSIENT}in the Electrical Specifications table.

Figure 19 – Single-sided cooling VIA thermal model

Thermal Considerations

In this case, R_JCcan be derived as following:

The VIA package provides eﬀective conduction cooling from either of

the two module surfaces. Heat may be removed from the top surface,

the bottom surface or both. The extent to which these two surfaces

are cooled is a key component for determining the maximum power

that can be processed by a DCM in a VIA package, as can be seen

from speciﬁed thermal operating area on Page 4. Since the VIA

package has a maximum internal temperature rating, it is necessary

to estimate this internal temperature based on a system-level

thermal solution. To this purpose, 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 18 shows the “thermal circuit” for the

VIA package.

(θ_{INT_TOP}+ θ_HOU) • θ_{INT_BOT}

θ_INT

=

θ_{INT_TOP}+ θ_HOU+ θ_{INT_BOT}

n

Double side cooling: while this option might bring limited

advantage to the module internal components (given the

surface-to-surface coupling provided), it might be appealing in

cases where the external thermal system requires allocating

power to two diﬀerent elements, like for example heatsinks with

independent airﬂows or a combination of chassis/air cooling.

Grounding Considerations

The chassis of the VIA package is required to be connected to

Protective Earth when installed in the end application and must

satisfy the requirements of IEC 60950-1 for Class I products. Both

sides of the housing are required to be connected to Protective Earth

to satisfy safety and EMI requirements. Protective earthing can be

accomplished through dedicated wiring harness (example: ring

terminal clamped by mounting screw) or surface contact (example:

pressure contact on bare conductive chassis or PCB copper layer

with no solder mask).

+

θ_{INT_TOP}

T_{C_TOP}

–

θ_HOU

s

–

T_{C_BOT}

θ_{INT_BOT}

+

P_DISS

s

Figure 18 – Double sided cooling VIA thermal model

In this case, the internal power dissipation is P_DISS, θ_{INT_TOP}and

θ

_{INT_BOT}are thermal resistance characteristics of the VIA package and

the top and bottom surface temperatures are represented as T_{C_TOP}

,

and T_{C_BOT}. It is interesting to notice that the package itself provides a

high degree of thermal coupling between the top and bottom case

surfaces (represented in the model by the resistor θ_HOU). This feature

enables two main options regarding thermal designs:

DCM^™in a VIA Package

Page 18 of 22

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DCM3414x50M13C2yzz

DCM in a VIA package Module Mechanical Drawing - PCB Mount Type

SDETIAL'

4

3

12

9

8

7

6

5

EDITAL

CSALE8:1

MCDHOLPTARNE

1

10

5

6

7

8

9

2

1

3

4

2

13

OTPVIEW

TBMOSIDE

C(PMNTOIDSE)

0

1

2

1

DCM^™in a VIA Package

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DCM3414x50M13C2yzz

DCM in a VIA package Module Mechanical Drawing - Chassis Mount Type

(5'

ꢁ

3

4

1

2

DCM^™in a VIA Package

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DCM3414x50M13C2yzz

Revision History

Revision

1.0

Date

Description

Page Number(s)

09/08/15

09/30/15

10/01/15

10/13/15

12/17/15

02/16/16

03/31/16

05/05/16

Intital release

n/a

3

1.1

Added graphic reference on Pin Configuration

Updated trim resolution value

1.2

7

1.3

Updated peak efficiency & case temperature

Added VDDE current consumption spec

Updated pin configuration and pin descriptions

Updated thermal capacitance value

1

1.4

7

1.5

3

1.6

14

1.7

Updated figure 1

4

Updated timing diagram notes page

Updated thermal capacity spec

9 & 10

14

1.8

1.9

05/31/16

05/18/17

Updated figure 1

4

Updated input overvoltage lockout/recovery threshold (powertrain protections)

values to match the OVLO operating points of the product

Updated height specifications, added pin description

6

14

2.0

07/13/17

Updated typical application bullets

1

Updated product photos

Moved remote sense rated voltage drop value to maximum column

Updated mechanical drawings (including new hex-head screws)

1

8

20 & 21

DCM^™in a VIA Package

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Rev 2.0

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DCM3414x50M13C2yzz

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.

Vicor’s Standard Terms and Conditions

All sales are subject to Vicor’s Standard Terms and Conditions of Sale, which are available on Vicor’s webpage or upon request.

Product Warranty

In Vicor’s standard terms and conditions of sale, Vicor warrants that its products are free from non-conformity to its Standard Specifications (the

“Express Limited Warranty”). This warranty is extended only to the original Buyer for the period expiring two (2) years after the date of shipment

and is not transferable.

UNLESS OTHERWISE EXPRESSLY STATED IN A WRITTEN SALES AGREEMENT SIGNED BY A DULY AUTHORIZED VICOR SIGNATORY, VICOR DISCLAIMS

ALL REPRESENTATIONS, LIABILITIES, AND WARRANTIES OF ANY KIND (WHETHER ARISING BY IMPLICATION OR BY OPERATION OF LAW) WITH

RESPECT TO THE PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR REPRESENTATIONS AS TO MERCHANTABILITY, FITNESS FOR

PARTICULAR PURPOSE, INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT, OR ANY OTHER MATTER.

This warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. Vicor shall not be liable

for collateral or consequential damage. Vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes

no liability for applications assistance or buyer product design. Buyers are responsible for their products and applications using Vicor products and

components. Prior to using or distributing any products that include Vicor components, buyers should provide adequate design, testing and

operating safeguards.

Vicor will repair or replace defective products in accordance with its own best judgment. For service under this warranty, the buyer must contact

Vicor to obtain a Return Material Authorization (RMA) number and shipping instructions. Products returned without prior authorization will be

returned to the buyer. The buyer will pay all charges incurred in returning the product to the factory. Vicor will pay all reshipment charges if the

product was defective within the terms of this warranty.

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; 8,966,747; 8,427,269; 6,421,262 and other patents pending.

Vicor Corporation

25 Frontage Road

Andover, MA, USA 01810

Tel: 800-735-6200

Fax: 978-475-6715

email

Customer Service: custserv@vicorpower.com

Technical Support: apps@vicorpower.com

DCM^™in a VIA Package

Page 22 of 22

Rev 2.0

vicorpower.com

800 927.9474

07/2017


型号：	DCM3414B50M13C2M09
厂家：	VICOR CORPORATION
描述：	Isolated, Regulated DC Converter
文件：	总22页 (文件大小：3177K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

DCM3414B50M13C2M09 [VICOR]

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