HDC Module

PRELIMINARY
HDC Module
HDC300B120x400y-00
Isolated, Regulated DC-DC Converter
Features
Overview
•
•
•
•
•
•
•
•
•
•
•
•
Isolated , regulated DC-to-DC converter
Up to 400 W, 33.3 A continuous
93.2% peak efficiency
128 W/in2 power density
Wide input range 180 to 420 Vdc
ZVS high frequency (MHz) switching
n Enables low profile, high-density filtering
• Full operation during current limit
• OV, OC, UV, short circuit and thermal protection
• Through-hole Brick Package
Part of the new HD Series of power conversion products
Companion models to HDR Regulator Family
Input Voltage: 180 to 420 Vdc
Output: 12 Vdc
Output Current to 33.3 Amperes
Agency approvals: CE Mark
Product Overview
The HDC Isolated, Regulated DC Converter is a DC-to-DC
converter, operating from an unregulated, wide range input to
generate an isolated 12 Vdc output. With its high frequency zero
voltage switching (ZVS) topology, the HDC consistently delivers
high efficiency across the input line range. Modular HDC 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.
Part Number Designation
Model
Input Voltage
Package
Output Voltage
(Nom.) x10
Temperature
Grade
Power
Pin /Base
-
Rev / Var
HDC
300
B
120
x
400
L
-
00
HDC = HD
Converter
Family
300 = 180 - 420 Vdc
120 = (VOUT
nominal) x 10
B Series
400 = Max rated
output power
C = -20°C > TSTG > 100°C, -20°C > TJ > +125°C
T = -40°C > TSTG > 100°C, -40°C > TJ > +125°C
M = -65°C > TSTG > 100°C, -55°C > TJ > +125°C
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L = Flanged baseplate
N = Flangeless baseplate
00 = Module
CB = Evaluation Board
PRELIMINARY
HDC300B120x400y-00
Typical Application
12 V
+IN
+OUT
ZVS
Buck
HDC
-IN
3.3, 5, 12 & 15 VOUT
-OUT
HDR
HDC Module
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800 927.9474
3.3, 5, 12 & 15 VOUT
PRELIMINARY
HDC300B120x400y-00
Pin Configuration
1
2
A
A’
B’
D’
B
F’
C
H’
D
J’
E
C’
E’
G’
I’
K’
Pin Descriptions
Pin
Number
Signal Name
Type
A1
+IN
INPUT POWER
B1
FT
DIGITAL OUTPUT
Fault indicator
C1
PC
DIGITAL INPUT
Primary control
D1
NC
NO CONNECTION
E1
-IN
INPUT POWER
Negative input power terminal
A’2
+OUT
OUTPUT POWER
Positive output power terminal
B’2, D’2
NC
NO CONNECTION
C’2
+S
OUTPUT POWER
Positive remote sense
E’2
VDD
OUTPUT POWER
3.3 V regulated voltage source for trimming
F’2
VDDB
INPUT POWER
G’2
TR
ANALOG INPUT
VOUT trim reference to SGND
H’2
FB
DIGITAL OUTPUT
Feedback PWM pulses for master-slave array for future use
I’2
-S
OUTPUT POWER
Negative remote sense
J’2
SGND
GROUND
K’2
-OUT
OUTPUT POWER
Function
Positive input power terminal
Do not connect to this pin
Do not connect to this pin
Semi-regulated voltage for future use
Signal ground
Negative output power terminal
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800 927.9474
PRELIMINARY
HDC300B120x400y-00
Absolute Maximum Ratings
Parameter
Rating
Unit
+In to –In voltage
-0.5 to 550
Vdc
FT to –In
-0.5 to 3.6
Vdc
PC to –In voltage
-0.5 to 3.3
Vdc
+Out to –Out voltage, +S to -Out
-0.5 to 13.2
Vdc
VDD to -Out
-0.5 to 3.6
Vdc
VDDB to -Out
-0.5 to 17.6
Vdc
TR to -Out
-0.5 to 3.6
Vdc
FB to -Out
-0.5 to 3.6
Vdc
Operating Temperature
-55 to +125
°C
M-Grade
Storage Temperature
-65 to +125
°C
M-Grade
5 (0.57)
in / lbs (N-M)
Mounting torque
Notes
550 for 100 ms
Externally applied
4 each
HDC Module
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PRELIMINARY
HDC300B120x400y-00
Electrical Specifications
Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted.
Boldface specifications apply over the temperature range of -40°C < TINT < 125°C.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
180
300
420
V
5
A
Module Input Specifications
Input voltage range,
continuous operation
VIN
Inrush current (peak)
IINRP
External input capacitance
CIN-EXT
Input inductance (external)
LIN
Input power – disabled
PQ
With maximum COUT-EXT, full resistive load, over VIN
and trim
0.68
µF
Differential mode, with no further line bypassing
10
µH
Nominal line
1.5
W
2
W
2.4
W
5
W
12.18
V
13.2
V
The total output voltage setpoint accuracy from the
calculated ideal Vout based on load, temp and trim
1.5
%
Worst case line
Nominal line
Input power – enabled, no load
PNL
Worst case line
Module Output Specifications
Output voltage set point
Output voltage trim range
VOUT accuracy
VOUT
VIN = 300, trim inactive, at full load
VOUT-TRIMING
%VOUT-ACCURACY
At full rated load current
11.82
12
7.2
Rated output power
POUT
Continuous, VOUT ≥ 12, 180 < VIN < 420
400
W
Rated output current
IOUT
Continuous, VOUT ≥ 12, 180 < VIN < 420
33.3
A
Output current limit
Current limit delay
Efficiency
IOUT-LIM
tIOUT-LIM
Low trim, will not shutdown when started into
max COUT
38.7
43.1
Nominal trim, will not shutdown when started into
max COUT
38.9
41.1
High trim, will not shutdown when started into
max COUT
32.5
37.7
The module will power limit in a fast transient event
η
A
1
ms
93.5
%
Full load, nominal line, trim inactive
92.3
Full load, over line and temperature, trim inactive
91.2
%
50% load, over line, temperature and trim
89.5
%
Output voltage ripple
VOUT-PP
Over all operating steady-state line, load and trim
conditions, 20 MHz BW with minimum COUT-EXT
Output capacitance (external)
COUT-EXT
Electrolytic capacitor preferred. Excludes component
tolerances and temperature coefficient
1000
400
240
mV
10000
µF
TBD
ms
TBD
µs
10
%
Initialization delay
Output turn-on delay
tON
From rising edge PC, with VIN pre-applied, VOUT no trim
Output turn-off delay
tOFF
From falling edge PC
Voltage deviation (transient)
Recovery time
%VOUT-TRANS
tTRANS
COUT-EXT = min; (10 to 90% load step), excluding load
line. Load transient slew rate up to full load current
per ms
HDC Module
Rev C
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800 927.9474
500
5
1
ms
PRELIMINARY
HDC300B120x400y-00
Electrical Specifications (cont.)
Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted.
Boldface specifications apply over the temperature range of -40°C < TINT < 125°C.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
155
V
Powertrain Protection
VIN undervoltage threshold
VIN-UVLO-
VIN undervoltage recovery threshold
VIN-UVLO+
177
V
VIN overvoltage threshold
VIN-OVLO+
455
V
VIN overvoltage recovery threshold
VIN-OVLO-
Overtemperature threshold (internal)
TINT-OVP
Short circuit, or temperature fault
recovery time
125
423
V
125
tFAULT
1
HDC Module
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800 927.9474
°C
s
PRELIMINARY
HDC300B120x400y-00
Signal Specifications
All specifications valid at 100% rated load and over specified input voltage range at 25°C, unless otherwise indicated.
Boldface specifications apply over the temperature range of -40°C < TINT < 125°C.
Fault: FT
• The fault pin is the 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 PC low), the FT pin outputs VDD and provides current
to drive an external circuit.
• When the module starts up, the FT pin is pulled high to VDD during microcontroller initialization and will remain high until soft start process starts
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
Internally generated VDD
FT Inactive
FT internal pull up
resistance to VDD
RFAULT-INACTIVE
FT Voltage
VFAULT-ACTIVE
At load = 4 ma
FT current drive capability
IFAULT-ACTIVE
Over-current FT drive beyond its capability
may cause module damage
DIGITAL
INPUT
TYP
MAX
UNIT
3.21
3.3
3.39
V
9.5
10.0
10.5
kΩ
3.0
V
4
mA
tRESPONSE-FAULT
After fault detected
tRESPONSE-TIME
After PC being pulled low
tRESPONSE-TIME1
After the module returns to no fault state,
the time for FT to become inactive, for input
UVLO and OVLO
1
ms
tRESPONSE-TIME2
After the module returns to no fault state,
the time for FT to become inactive, for other
(slower recovery) fault types
1
ms
MAX
UNIT
2.31
V
FT Active
FT response time
MIN
200
µs
5
µs
Primary Control: PC
• The PC pin enables and disables the converter; when held low the unit will be disabled.
• The PC pin has an internal pull-up to VDD and is referenced to the –IN pin of the converter.
SIGNAL TYPE
DIGITAL
INPUT
STATE
Any
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN
TYP
PC enable threshold
VPC-EN
PC disable threshold
VPC-DIS
0.99
VDD
3.21
3.3
3.39
V
9.5
10.0
10.5
kΩ
Internally generated VDD
PC internal pull up
resistance to VDD
RENABLE-INT
Pull up to VDD
HDC Module
Rev C
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800 927.9474
V
PRELIMINARY
HDC300B120x400y-00
Signal Specifications
All specifications valid at 100% rated load and over specified input voltage range at 25°C, unless otherwise indicated.
Boldface specifications apply over the temperature range of -40°C < TINT < 125°C.
Trim: TR
• The TR pin enables and disables trim functionality when VIN is applied to the HDC. TR pin voltage is sampled right before soft start stage during startup
• 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 500 Hz of -3 dB control bandwidth over the output voltage of the HDC
• The TR pin has an internal pull-up to VDD and is referenced to SGND pin of the converter
SIGNAL TYPE
STATE
ANALOG
INPUT
Regular
FB Peak Voltage
VFB
Operation
PWM Frequency
FPWM
3.20
Internally generated VDD
VDD
3.23
3.30
3.37
V
TR pin analog range
VTRIM-RANGE
0
2.486
3.1
V
VOUT step resolution
VOUT-RES
TR internal pull up
resistance to VDD
RTRIM-INT
Operational
ANALOG
INPUT
with Trim
enabled
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN
With VDD = 3.3 V
TYP
MAX
UNIT
3.15
V
V
6.21
mV
5.105
5.11
5.115
kΩ
MIN
TYP
MAX
UNIT
3.23
3.30
3.37
V
20
mA
MAX
UNIT
16
V
18
30
mA
TYP
MAX
UNIT
3.37
V
Regulated Voltage: VDD
• Regulated supply power
• Intended to be used as low current supply for ancillary circuits
SIGNAL TYPE
STATE
ATTRIBUTE
SYMBOL
POWER
OUTPUT
Regular
VDD Voltage output
VVDD_OUT
Operation
VDD Source current
IVDD_OUT
CONDITIONS / NOTES
Semi-regulated Voltage: VDDB
• Unregulated supply power input, required for future products
SIGNAL TYPE
STATE
POWER
INPUT
Regular
Operation
ATTRIBUTE
SYMBOL
VDDB Voltage
VVDDB
VDDB Current
consumption
IVDDB
CONDITIONS / NOTES
MIN
TYP
4
VDD pin not loaded
Feedback: FB
• PWM voltage regulation feedback from Digital Supervisor to DCM
• Intended to be used for a parallel array (future option)
SIGNAL TYPE
STATE
DIGITAL
OUTPUT
Regular
Operation
ATTRIBUTE
SYMBOL
CONDITIONS / NOTES
MIN
FB Peak Voltage
VFB
3.3
PWM Frequency
FPWM
25
FB PWM Duty Cycle
DCFB
1
HDC Module
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800 927.9474
kHz
97
%
PRELIMINARY
HDC300B120x400y-00
Block Diagram
+IN
+IN
FT
FT
PC
PC
-IN
-IN
+OUT
+OUT
+S
DCM
-S
-OUT
-OUT
VDD
PRI-OUT-A
DISO
PRI-COM
VSP
SEC-IN-A
SEC-COM
VDD
TRIM
VDDB
TR
Digital +S
Supervisor
-S
SGND
VDDB
SGND
FB
HDC Module
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PRELIMINARY
HDC300B120x400y-00
Typical Performance Characteristics
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
Nominal VOUT vs. Temperature
Nominal Line, Full Load
14
3.0
13
2.8
Input Current (mA)
Output Voltage (V)
Input Current vs. Line,
Module Disabled, PC = Low
12
11
10
9
8
2.6
2.4
2.2
2.0
1.8
7
1.6
6
-40
-20
0
20
40
60
80
100
180 200 220 240 260 280 300 320 340 360 380 400 420
Baseplate Temperature (°C)
Condition:
Nominal Trim
Input Voltage (V)
Minimum trim
TCASE:
Maximum Trim
Figure 2 — VOUT vs. operating temperature trend, at full load
-40°C
25°C
100°C
Figure 3 — Disabled current consumption vs. VIN
and nominal line
No Load Power Dissipation vs. Line,
Module Enabled - Nominal VOUT
2.8
Power Dissipation (W)
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
180 200 220 240 260 280 300 320 340 360 380 400 420
Input Voltage (V)
TCASE:
-40°C
25°C
100°C
Figure 4 — No load power dissipation vs. VIN, at nominal trim
Figure 5 — Initial startup from PC pin, with soft-start ramp.
Nominal VIN, COUT_EXT = 10000 uF, full load
93.0
Efficiency & Power Dissipation vs. Load,
TCASE = -40°C, Nominal Trim VOUT
95
92.0
Efficiency (%)
Efficiiency (%)
93
91.0
90.0
35
91
30
89
87
25
85
20
83
15
81
10
79
5
77
75
89.0
180 200 220 240 260 280 300 320 340 360 380 400 420
Input Voltage (V)
TCASE:
-40°C
25°C
100°C
Figure 6 — Full load efficiency vs. VIN, VOUT = 7.2 V
40
0
5
10
15
20
25
30
35
Power Dissipation (W)
Full Load Efficiency vs. Line,
Low Trim VOUT
0
Load Current (%)
VIN:
180 V
300 V
420 V
180 V
300 V
420 V
Figure 7 — VIN to VOUT efficiency and power dissipation vs. VIN
and IOUT, TCASE = -40°C
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PRELIMINARY
HDC300B120x400y-00
Typical Performance Characteristics (Cont.)
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
Efficiency (%)
Efficiiency (%)
93.0
92.5
92.0
91.5
91.0
180 200 220 240 260 280 300 320 340 360 380 400 420
Input Voltage (V)
TCASE:
-40°C
25°C
100°C
Figure 8 — Full load efficiency vs. VIN, VOUT = 12 V
95
93
91
89
87
85
83
81
79
77
75
Efficiency & Power Dissipation vs. Load,
TCASE = 25°C, Nominal Trim VOUT
40
35
30
25
20
15
10
5
0
5
10
15
20
25
30
35
Power Dissipation (W)
93.5
Full Load Efficiency vs. Line,
Nominal Trim VOUT
0
Load Current (%)
180 V
VIN:
300 V
420 V
180 V
300 V
420 V
Figure 9 — VIN to VOUT efficiency and power dissipation vs. VIN
and IOUT, TCASE = 25°C
94.0
Efficiency & Power Dissipation vs. Load,
TCASE = 100°C, Nominal Trim VOUT
95
Efficiency (%)
Efficiiency (%)
93
93.0
92.0
40
91
35
89
30
87
25
85
20
83
81
15
79
10
77
5
75
91.0
0
180 200 220 240 260 280 300 320 340 360 380 400 420
Input Voltage (V)
TCASE:
-40°C
25°C
100°C
Figure 10 — Full load efficiency vs. VIN, VOUT = 13.2 V
45
5
10
15
20
25
30
35
Power Dissipation (W)
Full Load Efficiency vs. Line,
High Trim VOUT
0
Load Current (%)
VIN:
180 V
300 V
420 V
180 V
300 V
420 V
Figure 11 — VIN to VOUT efficiency and power dissipation vs. VIN
and IOUT, TCASE = 100°C
Figure 12 — 10% to 100% load transient response, VIN = 300 V,
Figure 13 — 100% to 10% load transient response, VIN = 300 V,
nominal trim, COUT_EXT = 1000 µF
nominal trim, COUT_EXT = 1000 µF
HDC Module
Rev C
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800 927.9474
PRELIMINARY
HDC300B120x400y-00
Typical Performance Characteristics (Cont.)
The following figures present typical performance at TC = 25ºC, unless otherwise noted. See associated figures for general trend data.
Figure 14 — Typical output voltage ripple, VIN = 300 V, VOUT = 12 V,
COUT_EXT = 1000 µF, full load
HDC Module
Rev C
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PRELIMINARY
HDC300B120x400y-00
General Characteristics
Specifications apply over all line, trim and load conditions, TINT (internal) = 25°C, unless otherwise noted.
Boldface specifications apply over the temperature range of -40°C < TINT < 125°C.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Flanged and flangeless baseplate
56.62 / [2.23]
57.00 / [2.24]
57.39 / [2.26]
Flanged baseplate
46.12 / [1.82]
46.50 / [1.83]
46.88 / [1.85]
Flangeless baseplate
34.61 / [1.36]
34.99 / [1.38]
35.37 / [1.39]
Flanged and flangeless baseplate
15.36 / [0.61]
16.00 / [0.63]
16.36 / [0.66]
Unit
Mechanical
Length
L
Width
W
Height
H
Volume
Vol
Weight
mm/[in]
Flanged baseplate
43.00 / [2.63]
Flangeless baseplate
35.56 / [2.17]
W
cm3/[in3]
100 / [3.53]
g/[oz]
Pin material
C145 copper, ½ hard
Underplate
Nickel
50
100
Pin finish
Pure matte tin, whisker resistant chemistry
200
400
-65
125
µin
Assembly
Storage temperature
TST
HSM
Method per Human Body Model Test
JEDEC JESD22-A114C
CDM
Charged Device Model Test
JEDEC JESD22-C101C
ESD rating
°C
CLASS 1C
V
Reliablity
Calculated per Telcordia TR-NT-000332,
25°C
MTBF
3.58
MHrs
Telcordia Issue 2 - Method I Case 3;
25°C Ground Benigh, Controlled
Safety
Isolation voltage
VHIPOT
IN to OUT
4,242
IN to CASE
2,121
OUT to CASE
2,121
Agency Approvals
EN 60950-1
Agency approvals/standards
CE Marked for Low Voltage Directive and RoHS Recast Directive, as applicable
HDC Module
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VDC
PRELIMINARY
HDC300B120x400y-00
Environmental Qualification
Test Description
Test Detail
HALT (Highly Accelerated Life Testing)
EIAJESD22-A110-B
Fungus
MIL-STD-810F Method 508.5, section II
Salt Fog
MIL-STD-810F Method 509.4
Solderability
MIL-STD-202G Method 208H
Terminal Strength
MIL-STD-202G Method 211A, condition A
Acceleration
MIL-STD-202G Method 211A, condition A
Altitude
MIL-STD-810F Method 500.2, procedures I & II
Explosive Atmosphere
MIL-STD-810F Method 511.4, procedure I, operational
High Temperature Operating Life (HTOL)
Vicor internal reference EIAJESD22-A110-B
Humidity
MIL-STD-810F Method 507.4, 95% Relative Humidity
Mechanical Shock
MIL-STD-810F, Method 516.5 Procedure I, MIL-S-901D lightweight hammer shock, MILSTD-202F,
Method 213B
Random Mechanical Vibration
MIL-STD-810F, Method 514.5, Procedure I, Category 14, MIL-STD-810F, Method 514C,
general minimum integrity
Resistance to Solvents
MIL-STD-202G, Method 215K
Temperature Humidity Bias
JESD22-A101-B, 1000hrs
Temperature Cycle
JESD22-A104-B
Thermal Shock
MIL-STD-202G, Method 107G, Condition
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PRELIMINARY
Pin Functions
+IN, -IN
Input power pins. -IN is the reference for all control pins, and
therefore a Kelvin connection is recommended to reduce effects of
voltage drop due to -IN currents.
+OUT, -OUT
HDC300B120x400y-00
If trim is active, the TR pin provides dynamic trim control at a typical
500 Hz of -3dB bandwidth over the output voltage. VOUT set point
under full load and room temperature can be calculated using the
equation below:
VOUT = 1 + 0.171 • (
[
3.3 • Rtrim
) - 0.425 • VOUT_NOM
5110 + Rtrim
]
Output power pins.
PC (Primary Control)
This pin enables and disables the converter; when held low the unit
will be disabled. It is referenced to the -IN pin of the converter. The
PC pin has an internal pull-up to VDD_INT through a 10 kΩ resistor.
3.3V
n Output enable: When PC is allowed to float above the enable
threshold, the module is enabled. If leave PC floating, it is pulled
up to VDD and module will be enabled.
n Output disable: PC may be pulled down externally in order to
5.11k
disable the module.
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. Whenever the
powertrain stops (due to a fault protection or disabling the module
by pulling PC low), the FT pin becomes active and provides current
to drive an external circuit. The FT pin becomes active momentarily
when the module starts up.
TR
Rtrim
When active, FT pin drives to VDD, with up to 5 mA of external
loading. Module may be damaged from an over-current FT drive,
thus a resistor in series for current limiting is recommended.
Remote Sense (+S, -S)
The Remote Sense pins sense the voltage at the load and adjusts the
converter output voltage to compensate for the voltage drop in the
leads/traces. The sense leads of the module must always terminate
either directly to the output pins (local sense) or at the load
(remote sense).
VDD
3.3 V regulated voltage for external ancillary circuits.
VDDB
Semi-regulated voltage for future products.
TR (Trim)
The TR pin is used to select the trim mode and to trim the output
voltage of the converter. The TR pin has an internal pull-up to VDD_INT
through a 5.11 kΩ resistor.
The converter shall latch trim behavior at application of VIN, 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 shall latch in a non-trim mode, and will ignore the TR input
for as long as VIN is present.
n At application of VIN, if TR is sampled at below VTRIM-EN, the TR
Rtrim =
1,277,500 • (-40 VOUT + 23 VOUT_NOM )
10,000 VOUT - 11,393 VOUT_NOM
FB (Feedback)
The FB pin produces PWM pulses whose duty cycle is maintained by
the internal Digital Supervisor to regulate the output voltage. This
pin will be used for paralleling modules to create high current/power
arrays in the future.
SGND
Signal ground for referencing all control circuitry.
Soft Start
The first time the HDC starts after application of input voltage, it will
go through a soft start sequence. Notice that the module will only
startup if input voltage is inside the range of VIN-FULL-POWER. After
startup, the module can then operate in the entire VIN range.
will serve as an input to control real time output voltage trim. It will
persist in this behavior until VIN is no longer present.
This soft start sequence permits initial startup into a completely
discharged load capacitance. The soft start sequence ramps the
output voltage by modulating the internal error amplifier reference.
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This causes the output voltage to approximate a piecewise linear
ramp. The output ramp finishes then the voltage reaches either the
nominal output voltage or the trimmed output voltage in cases
where trim mode is active.
An HDC recovering from any fault condition does not assume that
the output capacitance has remained charged. Just as with its initial
startup sequence when VIN is first applied, it will again execute the
soft start ramp.
Output Current Limit
The HDC 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. Output
Overload protection threshold is typically 105% of maximum output
current, and can vary from 100% to 120% of maximum
output current.
When the output current exceeds the current limit threshold, current
limit action is postponed by 1ms, which permits the converter 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 converter to
minimize droop voltage for load steps. Sustained operation in
current limit is permitted, and no derating of output power is
required in an array. Some applications may benefit from well
matched current distribution, in which case fine tuning sharing via
the trim pins permits control over sharing. The converter 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 and Output Stability Requirements
Connect a high-quality, low-noise power supply to the +IN and –IN
terminals. The interconnect cables can be up to 1 meter long each
way, and up to 0.1 m apart between each other. 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. Significant source impedance can bring system stability
issue for a regulated DC-DC converter and needs to be avoided
or compensated.
Make sure input voltage slew rate dVin/dt is less than 1 V/us,
otherwise a pre-charge circuit is required in the input side to control
the charging slew rate. For the HDC, the output voltage stability is
guaranteed as long as hold up capacitance COUT falls within the
specified ranges.
Input Fuse Selection
The HDC is not internally fused, see safety approvals for required
fusing.
HDC300B120x400y-00
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
VIN-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.
UVLO faults which are shorter than tUVLO may not be detected by the
fault sequence logic, in which case the converter may not respond.
After a UVLO fault is detected by the fault sequence logic and the
converter shuts down as a result, it will wait for the input voltage to
rise above VIN-UVLO+. Provided the converter is still enabled, the
powertrain will again enter the soft start sequence.
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 immediately 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 again enter the soft start sequence.
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. In
general, whenever the powertrain is switching and the primarysensed output voltage falls below VOUT-UVP threshold, 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 tFAULT and then provided the converter is still enabled, the
powertrain will again 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 goes higher than TINT-OTP, a temperature
fault is registered. As with the undervoltage 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 a time tFAULT. Then, the converter waits for the
internal temperature to return to below TINT-OTP before recovering.
Once recovered, provided the converter is still enabled, the HDC will
again enter the soft start sequence after tINIT and tON.
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Output Overvoltage Fault Protection (OVP)
The converter monitors the primary sensed output voltage during
switching to detect output OVP. If the primary sensed output voltage
exceeds VOUT-OVP, a fault is latched, the logic disables the powertrain,
and the output voltage of the converter falls.
This type of fault is latched, and the converter will not operate
until the latch is cleared. Clearing the fault latch is achieved by either
disabling the converter via the PC pin, or else by removing the
input power.
Burst Mode
Under light loading conditions, the HD Converter may operate in
burst mode depending on the line voltage. Burst mode 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. To prevent the output voltage
from rising in this case, the powertrain is switched 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 there is a notable reduction in no-load input power in
burst mode.
Pin Solderability
Please refer to the Soldering Methods and Procedures for Vicor
Power Modules application note for guidance on soldering the HDC
module to printed circuit boards. The application note can be found
at: www.vicorpower.com/documents/application_notes/
an_powermodulesoldering.pdf
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Mechanical Drawings
Flanged baseplate
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Mechanical Drawings (Cont.)
2.275±.015
57.79±.38
.39
10.0
.082
2.08
MAX 4X
INPUT SIDE
OUTPUT SIDE
1.377±.015
34.99±.38
.042
1.07
MAX 12X
.37
9.5
OUTPUT SIDE
.630±.025
16.00±.64
.15
3.9
.100±.003
2.54±.08
PLATED THRU HOLE
.120 .003
[3.05 .08 ]
ANNULAR RING 4X
1.488
37.80
.098
2.50
1
.285
7.25
2
.148
3.75
.060±.003
1.52±.08
PLATED THRU HOLE
.080 .003
[2.03 .08]
ANNULAR RING 12X
.098
2.50
2X
16
15
13
11
3
4
9
14
12
.098
2.50
7X
10
8
7
6
5
.167
4.25
2X
RECOMMENDED LAND PATTERN
(COMPONENT SIDE SHOWN)
Flangeless baseplate
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HDC300B120x400y-00
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; 8,427,269; 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: [email protected]
Technical Support: [email protected]
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