HTA [INFINEON]
HIGH RELIABILITY DC/DC CONVERTER; 高可靠性DC / DC转换器
| 型号： | HTA |
| 厂家： | 
Infineon |
| 描述： | HIGH RELIABILITY DC/DC CONVERTER |
| 文件： | 总14页 (文件大小：164K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD-97309A
HTA-SERIES
200V Input, Single/Dual Output
HIGH RELIABILITY
DC/DC CONVERTER
Description
The HTA Series of DC/DC converters is a family of 20W,
single and dual output, high reliability devices designed to
operate in extremely high temperature environments such as
those encountered in oil exploration applications. Features
include small size, low weight and high tolerance to
environmental stresses such as wide temperature extremes,
severe shock and vibration. All internal components are
derated to meet the intended operating environment.
Documentation including electrical stress and thermal analysis
are available.
Features
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150 to 250V DC Input Range
Up to 20W Output Power
Single and Dual Output Models Include
3.3, 5, 12, 15, ±5, ±12 and ±15V
Internal EMI Filter
Magnetically Coupled Feedback
High Efficiency - to 76%
-35°Cto+185°COperatingCaseTemperatureRange
10MΩ @ 500VDC Isolation
Under-Voltage Lockout
Short Circuit and Overload Protection
Output Over Voltage Limiter
Adjustable Output Voltage
n
n
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n
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n
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n
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The converters incorporate a fixed frequency single forward
topology with magnetic feedback and internal EMI filter. All
models include an external inhibit port and have an adjustable
output voltage. They are enclosed in a hermetic 1.5" x 4.0" x
0.430" AlSi package and weigh less than 70grams. The
package utilizes rugged ceramic feed-thru copper core pins
and is sealed using parallel seam welding.
Full environmental screening includes temperature cycling,
constant acceleration, fine and gross leak, and burn-in. Non-
screened versions of the HTA converters are available for
system development purposes. Variations in electrical
specifications and screening to meet custom requirements
can be accommodated.
Synchronization Input and Output
External Inhibit
Low Weight, < 70grams
Applications
n Down Hole Exploration Tools
Circuit Description
The current limit point exhibits a slightly negative
temperature coefficient to reduce the possibility of
thermal runaway.
The HTA series of converters utilize a single-ended forward
topology with resonant reset. The nominal switching frequency
is 500KHz. Electrical isolation and tight output regulation are
achieved through the use of a magnetically coupled feedback.
Voltage feed-forward with duty factor limiting provides high
line rejection and protection against output over voltage in the
event of an internal control loop failure. This mechanism
limits the maximum output voltage to approximately 20% over
the nominal regardless of the line voltage.
An external Inhibit port is provided to control converter
operation. The converter’s operation is inhibited when
this pin is pulled low. It is designed to be driven by an
open collector logic device. The pin may be left open
for normal operation and has a nominal open circuit
voltage of 4.0V with respect to the Input Return (pin 2).
Output current is limited under any load fault condition to
approximately 125% of rated load at maximum operating case
temperature. An overload condition causes the converter
output to behave like a constant current source with the output
voltage dropping below nominal. The converter will resume
normal operation when the load current is reduced below the
current limit point. This protects the converter from both
overload and short circuit conditions.
The output voltage of all models can be adjusted using
a single external resistor.
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1
03/03/09
HTA-SERIES
Absolute Maximum Ratings
Maximum Operating Conditions
Input voltage range
-0.5Vdc to +300Vdc
Input voltage range
150Vdc to 250Vdc
Output power
Internally limited
Output power
0 to Max. Rated
-35°C to +185°C
Lead temperature
+300°C for 10 seconds Operating temperature
-35°C to +185°C
Operating case temperature
Storage temperature
-55°C to +185°C
Electrical Performance Characteristics
Conditions
Limits
°
≤
≤
°
-35 C TC +185 C
Group A
Subgroup
V
= 200V DC ± 5%, CL = 0
IN
Parameter
Input Voltage
Unit
V
Min
150
Nom
200
Max
250
unless otherwise specified
Output voltage ( Vout )
HTA2003R3S
HTA20005S
1
1
1
1
1
1
1
3.25
4.95
3.30
5.00
3.35
5.05
IOUT = 100% rated load
Note 4
HTA20012S
HTA20015S
HTA20005D
HTA20012D
11.88
14.85
±4.95
±11.88
±14.85
12.00
15.00
±5.00
±12.00
±15.00
12.12
15.15
±5.05
±12.12
±15.15
HTA20015D
V
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
2,3
2,3
2,3
2,3
2,3
2,3
2,3
3.20
4.85
3.40
5.15
IOUT = 100% rated load
Note 4
11.64
14.55
±4.85
±11.64
±14.55
12.36
15.45
±5.15
±12.36
±15.45
Output power ( POUT
)
1,2,3
1,2,3
VIN = 150, 200, 250 Volts, Note 2
VIN = 150, 200, 250 Volts, Note 2
0
20
W
A
Output current ( IOUT
)
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
0
0
0
0
0
0
0
6.10
4.00
1.67
1.33
3.20
1.34
1.06
Either Output, Note 3
Either Output, Note 3
Either Output, Note 3
V
IN = 150, 200, 250 Volts
Line regulation ( VRLINE
)
1,2,3
1,2,3
-0.5
-1.0
+0.5
+1.0
%
%
IOUT = 0, 50%, 100% rated, Note 4
IOUT = 0, 50%, 100% rated, Note 4
VIN = 150, 200, 250 Volts
Load regulation ( VRLOAD
)
Cross regulation ( VRCROSS
HTA20005D
)
VIN = 150, 200, 250 Volts
Duals only, Note 5
-5.0
-3.0
-3.0
5.0
3.0
3.0
HTA20012D
HTA20015D
%
1,2,3
For Notes to Electrical Performance Characteristics, refer to page 5
2
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HTA-SERIES
Electrical Performance Characteristics ( continued )
Conditions
-35°C ≤ TC ≤ +185°C
IN = 200V DC ± 5%, CL = 0
Limits
Nom
Group A
V
Parameter
Subgroup
Unit
mA
unless otherwise specified
Min
Max
20
Input current, no load ( IIN
HTA20003R3S
HTA20005S
)
1,3
IOUT = 0, Pin 4 open
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
30
mA
IOUT = 0, Pin 4 open
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
2
Input current inhibited
1,2,3
1,3
Pin 4 shorted to pin 2
5.0
mA
Output ripple ( VRIP
)
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
V
IN = 150, 200, 250 Volts
50
50
70
80
80
80
80
I
OUT = 100% rated load
Notes 4, 6
mV p-p
2
VIN = 150, 200, 250 Volts
IOUT = 100% rated load
Notes 4, 6
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
25
25
35
40
40
40
40
mV p-p
KHz
Switching frequency ( FS )
Efficiency ( EFF
1,2,3
1
Sync. Input (Pin 4) open
500
550
650
)
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
IOUT = 100% rated load
Note 4
70
75
76
76
75
76
76
74
78
79
79
78
79
79
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
2
3
65
70
71
71
70
71
71
I
OUT = 100% rated load
Note 4
%
68
73
74
74
73
73
73
HTA20003R3S
HTA20005S
HTA20012S
HTA20015S
HTA20005D
HTA20012D
HTA20015D
IOUT = 100% rated load
Note 4
For Notes to Electrical Performance Characteristics, refer to page 5
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HTA-SERIES
Electrical Performance Characteristics ( continued )
Conditions
-35°C ≤ TC ≤ +185°C
VIN = 200V DC ± 5%, CL = 0
unless otherwise specified
Limits
Nom
Group A
Subgroup
Parameter
Unit
V
Min
119
Max
146
Under Voltage Lockout
Turn-on
( input voltage rising )
Turn-off
( input voltage decreasing )
1,2,3
1,2,3
No load, Full load
Notes 1, 4
Synchronization
Frequency Range
Pulse Amplitude, High
Pulse Amplitude, Low
Pulse Rise Time
1,2,3
1,2,3
1,2,3
500
2.0
-0.5
650
10
0.8
100
80
KHz
V
V
ns
%
Note 1
Pulse Duty Cycle
20
Transient Recovery Specification
Notes 4, 10, 11, 12
%
µs
Transient Load Response
Half to Full Load
4,5,6
4,5,6
4,5,6
4,5,6
Overshoot
Recovery Time
10
300
%
Transient Load Response
Full to Half Load
Overshoot
Recovery Time
10
450
µ
s
%
µs
Transient Load Response
10% to Half Load
Overshoot
Recovery Time
15
300
%
µs
Transient Load Response
Half to 10% Load
Overshoot
Recovery Time
15
450
Enable Input ( Inhibit Function )
open circuit voltage
drive current ( sink )
voltage range
V
µA
V
1,2,3
Note 1
3.0
5.0
100
50
-0.5
Current Limit Point
Expressed as a percentage
of full rated load current
175
150
220
1
2
3
115
105
130
VOUT = 90% of Nominal, Note 4
Short Circuit, Overload, Note 8
%
W
Power dissipation, load fault ( PD )
Turn-on Response
1,2,3
30
Overshoot ( VOS
Turn-on Delay (TDLY
)
No Load, Full Load
Notes 4, 9
10
200
%
ms
4,5,6
1
)
2.0
Capacitive Load ( CL )
HTA20003R3S
HTA20005S
IOUT = 100% rated load
No effect on DC performance
Notes 1, 4, 7
2200
1000
180
120
500
90
HTA20012S
HTA20015S
HTA20005D
HTA20012D
µF
dB
Each output on duals
HTA20015D
60
MIL-STD-461, CS101
Line Rejection
1
1
40
50
30Hz to 50KHz, Notes 1, 4
Input to Output or Any Pin to Case
except pin 3, test @ 500VDC
Isolation
100
MΩ
Device Weight
70
g
For Notes to Electrical Performance Characteristics, refer to page 5
4
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HTA-SERIES
Notes for Electrical Performance Characteristics Table
1. Parameter is tested as part of design characterization or after design changes. Thereafter, parameter shall be
guaranteed to the limits specified.
2. Parameter verified during line and load regulation tests.
3. Output load current must be distributed such that at least 20% of the total load current is being provided by one
of the outputs.
4. Load current split equally between outputs on dual output models.
5. Cross regulation is measured with 20% rated load on output under test while changing the load on the other
output from 20% to 80% of rated.
6. Guaranteed for a D.C. to 20MHz bandwidth. Tested using a 20KHz to 10MHz bandwidth using the circuit on
page 6.
7. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A
capacitive load in excess of the maximum limit may interfere with the proper operation of the converter’s
overload protection, causing erratic behavior during turn-on.
8. Overload power dissipation is defined as the device power dissipation with the load set such that VOUT = 90% of
nominal.
9. Turn-on delay time from either a step application of input power or a logic low to a logic high transition on the
inhibit pin (pin 4) to the point where VOUT = 90% of nominal.
10.
Transient recovery time is from the change in load condition until the output is within 3% of the nominal output
voltage.
11.
12.
Recovery time is measured from initiation of the transient to where VOUT has returned to within ±1% of VOUT at
50% load.
Load transient time ≥ 10µs.
Fig I. Circuit for Measuring Output Ripple Voltage
1 µF
50 Ω
50 Ω Coax
Oscilliscope or Equivalent
with 10 MHz Bandwidth.
Multiply readings by 2.
0.1 µF
+ Vout
Return
50 Ω
Termination
DUT
RL for IRATED
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5
HTA-SERIES
Fig II. Block Diagram - Single Output
IMPUT
FILTER
DC INPUT
ENABLE
1
4
OUTPUT
FILTER
7
8
+OUTPUT
PRIMARY
BIAS SUPPLY
CURRENT
SENSE
OUTPUT RETURN
3
CASE
DRIVER
INPUT RETURN
2
11
TRIM
ERROR
AMP
12
10
9
N/C
&
REF
+SENSE
-SENSE
SENSE
AMPLIFIER
SYNC.
INPUT
6
5
CONTROL
SYNC.
OUTPUT
VFB
Fig III. Block Diagram - Dual Output
IMPUT
FILTER
DC INPUT
1
4
OUTPUT
FILTER
7
8
9
+O UTPUT
PRIMARY
ENABLE
BIAS SUPPLY
CURRENT
SENSE
OUTPUT RETURN
OUTPUT
FILTER
-OUTPUT
3
2
CASE
DRIVER
INPUT RETURN
10
TRIM
ERROR
AMP
11
12
N/C
N/C
&
REF
SYNC.
INPUT
6
5
CONTROL
SYNC.
OUTPUT
VFB
6
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HTA-SERIES
Technical Notes:
Remote Sensing
Output Voltage Adjust - Single Output Models
This feature is available only for single output models.
Connection of the + Sense and - Sense leads at a remotely
located load permits compensation for resistive voltage drop
between the converter output and the load when they are
physically separated by a significant distance. This
connection allows regulation to the placard voltage at the
point of application. When the remote sensing features is
not used, the sense leads should be connected to their
respective output terminals at the converter. A combination
of the compensation voltage drop and output voltage
adjustment (described below in the ‘Output Voltage
Adjustment’ section) is limited to 10% of the nominal output
voltage.
In addition to permitting close voltage regulation of remotely
located loads, it is possible to utilize the converter sense
pins to incrementally increase the output voltage. The
increased output voltage is limited to 10% maximum. The
adjustments made possible by this method are intended as
a means to “trim” the output to a voltage setting for certain
design application, but are not intended to create an
adjustable output converter. These output voltage setting
variations are obtained by connecting a resistor with an
appropriate value between the +Sense and -Sense pins
while connecting the -Sense pin to the Output Return pin as
shown in Fig IV below. The resistance value for a desired
output voltage can be determined by use of the equation
presented below.
Inhibiting Converter Output
As an alternative to application and removal of the DC voltage
to the input, the user can control the converter output by
providing TTL compatible, positive logic signal to Enable pin
(pin 4) and to Input Return (pin 2). Enable signal is internally
pulled “high” so that when not used, an open connection on
the Enable pin permits normal converter operation. When
its use is desired, a logical “low” on this port will shut the
converter down.
⎧
⎨
⎩
⎫
⎬
⎭
VNOM
Radj = 100•
VOUT - VNOM -.025
Where VNOM = device nominal output voltage, and
VOUT = desired output voltage
Finding a resistor value for a particular output voltage, is
simply a matter of substituting the desired output voltage
and the nominal device voltage into the equation and solving
for the corresponding resistor value. Under no circumstance
Synchronization of Multiple Converters
When operating multiple converters, system requirements
often may require operation of the converters at a common
frequency. To accommodate this requirement, the HTA
series of converters provide both a synchronization input
and output.
should RADJ be less than 500Ω.
Fig IV. Connection for VOUT Adjustment
The Sync Input port permits synchronization of a HTA
connverter to any compatible external frequency source
operating between 500KHz and 650KHz. This input signal
should be referenced to the Input Return and have a 10%
to 90% duty cycle. Compatibility requires transition times
less than100ns, maximum low level of +0.8V and a minimum
high level of +2.0V. The Sync Output of another converter
which has been designated as the master oscillator provides
a convenient frequency source for this mode of operation.
When external synchronization is not required, the Sync In
pin should be left unconnected thereby permitting the
converter to operate at its own internally set frequency.
N/C
Trim
RADJ
+ Sense
HTA200XXS
- Sense
Output Return
To
Load
+ Output
The sync output signal is a continuous pulse train set at
550 ± 50KHz, with a duty cycle of 15 ± 5.0%. This signal is
referenced to the Input Return and has been tailored to be
compatible with the HTA Sync Input port. Transition times
are less than 100ns and the low level output impedance is
less than 50Ω. This signal is active when the DC input
voltage is within the specified operating range and the
converter is not inhibited. This output has adequate drive
reserve to synchronize at least five additional converters.
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7
HTA-SERIES
Note that the nominal magnitude of output voltage resides in
the middle of the table and the corresponding resistor value
is set to ∞. To set the magnitude greater than nominal, the
adjust resistor is connected to output return. To set the
magnitude less than nominal, the adjust resistor is
connected to the +Output. (Refer to Fig V.)
Examination of the equation relating output voltage and
resistor value reveals a special benefit of the circuit topology
utilized for remote sensing of output voltage in the
HTA200XXS series of converters. It is apparent that as the
resistance increases, the output voltage approaches the
nominal set value of the device. In fact the calculated limiting
value of output voltage as the adjusting resistor becomes
very large, is ≈ 25mV above nominal device voltage.
Fig V. Connection for VOUT Adjustment
The consequence is that if the +sense connection is
unintentionally broken, an HTA200XXS has a fail-safe output
voltage of Vout + 25mV, where the 25mV is independent of
the nominal output voltage. It can be further demonstrated
that in the event of both the +Sense and -Sense connections
being broken, the output will be limited to Vout + 440mV.
This 440mV is also essentially constant independent of the
nominal output voltage. While operation in this condition is
not damaging to the device, not all performance parameters
will be met.
N/C
RADJ
-
Trim
+
N/C
HTA200XXD
- Output
To
Loads
Output Return
+ Output
Output Voltage Adjust - Dual Output Models
Connect R
to + to increase, - to decrease
ADJ
By use of the Trim pin (10), the magnitude of output voltages
can be adjusted over a limited range in either a positive or
negative direction. Connecting a resistor between the trim
pin and either the output return or the positive output will
raise or lower the magnitude of output voltages. The span
of output voltage adjustment is restricted to the limits shown
For output voltage settings that are within the limits, but
between those listed in Table I, it is suggested that the
resistor values be determined empirically by selection or by
use of a variable resistor. The determined value can then
be replaced with a good quality fixed resistor for permanent
installation.
in Table I.
When use of this adjust feature is elected, the user should
be aware that the temperature performance of the converter
output voltage will be affected by the temperature
performance of the resistor selected as the adjustment
element and therefore, is advised to employ resistors with a
very small temperature coefficient of resistance.
Table 1. Output Voltage Trim Values and Limits
HTA20005D
HTA20012D
HTA20015D
V
R
V
R
V
R
ADJ
OUT
5.5
ADJ
OUT
12.5
12.4
12.3
12.2
12.1
12.0
11.7
11.3
10.8
10.6
10.417
ADJ
OUT
15.5
15.4
15.3
15.2
15.1
15.0
14.6
14.0
13.5
13.0
12.917
0
0
0
5.4
12.5K
33.3K
75K
200K
∞
47.5K
127K
285K
760K
∞
62.5K
167K
375K
1.0M
∞
5.3
5.2
5.1
5.0
4.9
190K
65K
23K
2.5K
0
975K
288K
72.9K
29.9K
0
1.2M
325K
117K
12.5K
0
4.8
4.7
4.6
4.583
8
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HTA-SERIES
Application Notes:
DC-DC converters constructed with aluminium-silicon
(ALSi) controlled expansion alloy benefit from low mass,
high thermal conductivity, and CTE match to substrates
mounted in them. The one disadvantage over traditional
cold rolled steel packages (CRS) however is that the ALSi
material is more brittle than the CRS. For this reason, it is
important to avoid using a thermal pad or gasket.
The Procedure for mounting the converter is as follows:
1. Check all surfaces for foreign material, burrs, or
anything that may interfere with the different parts.
2. Place the converter on the mounting surface and line it
up with mounting holes.
3. Install screws using appropriate washers and tighten
by hand (~ 4 in.oz) in the sequence shown below in the
diagram.
The HTA-Series DC-DC converter requires 8-32 size
screws and #8 flat washers.
.
4. Tighten the screws with appropriate torque driver using
a controlled torque of up to 20-24 in.lb in the sequence
as shown in the diagram.
The minimum recommended mouting surface flatness is
0.002” per inch.
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HTA-SERIES
Efficiency Curves for HTA20003R3S
Fig VI. 25°C Efficiency vs. Output Loading
90
80
70
60
50
40
30
20
10
0
150 Vin
200 Vin
250 Vin
0
1
2
3
4
5
6
7
Output Load (A)
Fig VII. 185°C Efficiency vs. Output Loading
90
80
70
60
50
40
30
20
10
0
150 Vin
200 Vin
250 Vin
0
1
2
3
4
5
6
7
Output Load (A)
10
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HTA-SERIES
Efficiency Curve for HTA20003R3S
Fig VIII. Efficiency vs. Temperature
75
74
73
72
71
70
69
68
67
66
65
150 Vin
200 Vin
250 Vin
0
20
40
60
80
100
120
140
160
180
200
Temperature C
Efficiency Curve for HTA20005S
Fig IX. 25°C Efficiency vs. Output Loading
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
150 Vin
200 Vin
250 Vin
0
1
2
3
4
5
Output Load (A)
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HTA-SERIES
Efficiency Curves for HTA20005S
Fig X. 185°C Efficiency vs. Output Loading
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
150 Vin
200 Vin
250 Vin
0
1
2
3
4
5
Output Load (A)
Fig XI. Efficiency vs. Temperature
85%
83%
81%
79%
77%
75%
73%
71%
69%
67%
65%
150 Vin
200 Vin
250 Vin
0
50
100
150
200
Temperature C
12
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HTA-SERIES
Mechanical Diagram
0.245
0.200 Typ.
Non-cum.
Ø0.266
0.250
1
2
3
4
5
6
12
11
10
9
1.000
Ref.
1.500
1.100
0.200
8
7
Pin
Ø 0.040
2.500
3.600
4.000 MAX.
0.238 MAX.
0.430
Max.
0.075
NOTES: UNLESS OTHERWISE SPECIFIED, DIMENSIONAL TOLERANCE IS: 0.005"
Pin Designation (Single/Dual)
Pin #
Single
Dual
1
2
DC Input
Input Return
Case
DC Input
Input Return
Case
3
4
Enable
Enable
5
Sync. Output
Sync. Input
+ Output
Output Return
- Sense
Sync. Output
Sync. Input
+ Output
Output Return
- Output
N/C
6
7
8
9
10
11
12
+ Sense
Trim *
Trim
N/C
N/C
* Trim pin for Single Output models is reserved for future use.
This pin must not be used or connected for any purpose.
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13
HTA-SERIES
Device Screening
Requirement
MIL-STD-883
Method
Condition
No Suffix
(Production (For Engineering
/EM suffix
Qualilty)
Evaluation)
Internal Visual
Seal (Laser Weld)
2017
-
X
X
X
X
X
X
1014
-
X
Fine Leak Test (Unpressurized)
Gross Leak Test (Unpressurized)
Temperature Cycling
-
-
-
X (For info only)
X
-
1010
-35°C, +185°C, 10 cycles
Not required
In accordance with
device specification
2001
Electrical
Constant Acceleration
Electrical
-
X
X
X
X
X
Not required
Not required
Not required
8 hours @ 185°C
X
3000G for 1 minute
In accordance with
device specification
1015
-
Burn-in
48 hrs @ 185°C
-
In accordance with
device specification
1014
Final Electrical (Group A)
Fine Leak Test
Gross Leak Test
External Visual
A2
C1
-
X
X
X
Not required
1014
X
X
2009
Part Numbering
HTA 200 05 S / EM
EM = Engineering Model (evalulation purposes)
Blank = No Suffix (production quality)
(Please refer to Device Screening Table for specific
screening requirements)
Model
Input Voltage
200 = 200V
Output
S = Single
D = Dual
Output Voltage
03R3 = 3.3V, 05 = 5V
12 = 12V, 15 = 15V
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105
IR SANTA CLARA: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 03/2009
14
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