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30W Mil-grade DC-DC Converters

30W Mil-grade DC-DC Converters

Sales 30W Mil-grade DC-DC Converters

The HTR28 Series of  defense military grade DC-DC converter offer up to 30 watts of output power with high reliability. The converters are packaged in hermetically sealed metal cases, making them ideal for use in aviation, aerospace and other high reliability applications.
  • Single/Double/Triple : Single
  • Output Voltage (V) : 5V,12V,15V
  • Max. Output Power (W) : 30W
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Product Detail  

1  FEATURES of HTR28 Series High Reliability  DC/DC Converters

  • 16 to 40 VDC input, typical 28V

  • 30W output power
  • -55℃ to+125℃ operation
  • Fully isolated
  • 100MΩminimum (500V DC) isolation
  • Inhibit and indefinite short circuit protection
  • 30W/in3 power density
  • Equivalent with Interpoint’s MTR Series
  • Hermetically sealed meatal cases

Table 1  Product models

MODELS

SINGLE

DUAL

TRIPLE

HTR28S5(F)

HTR28D5(F)

HTR28T512(F)

HTR28S12(F)

HTR28D12(F)

HTR28T515(F)

HTR28S15(F)

HTR28D15(F)

HTR28T515-A

HTR28S3R3


HTR28T515-B

HTR28S18(F)



2  DESCRIPTION of HTR28 Series Mil-grade DC-DC Converter

The HTR28 Series of  defense DC-DC converter offer up to 30 watts of output power with high reliability. The converters are packaged in hermetically sealed metal cases, making them ideal for use in aviation, aerospace and other high reliability applications.
The HTR 28 series of converters use a single ended, pulse width modulated and transformer magnetic feedback topology design. The operating principle is that the sampling signal of output voltage , coupled by the opto-coupler, works together with the sampling signal of input loop current to regulate the pulse width of the controller. The double close loop control create constant voltage output and short circuit protection.
Thick film hybrid techniques provide the HTR 28 Series of converters with reliability levels and optimum miniaturazation.The design and manufacturing process of HTR 28 Series of converters are in compliance with General Standards of Hybrid Integrated Circuits and detailed standards of manufacturing. Connected to a HFD-CE03 filter, the HTR 28 Series of converters can achieve better electromagnetic compatibility(EMC) performance.


3 ELECTRICAL PERFORMANCE of HTR28 Series Mil-grade DC DC Converter

ABSOLUTE MAXIMUM RATINGS
  • Input Voltage: 16 to 40 VDC
  • Power Dissipation: 30 watts
  • Lead Soldering Temperature:300℃(10s)
  • Storage Temperature Range: -55℃ to+125℃
  • Inhibit Voltage: 0.2V max
  • External Synchronous Signals:
Frequency Range: 450k to 600kHz
Duty Ratio: 40% to 60%
Level: 0.8 V≤V≤4.5V

RECOMMENDED OPERATING CONDITIONS
  • Input VDC: 16 to 40 V
  • Case Temperature(Tc): -55℃ to+125℃
HTR28S5(F) , HTR28S12(F) , HTR28S15(F)
Table 2  Electrical Characteristics: (TCASE = -55°C to +125°C, VIN = 28V ± 0.5V, Full Load5, Unless Otherwise Specified)

Single output models HTR28S5(F) HTR28S12(F) HTR28S15(F)
Parameter Conditions Min Max Min Max Min Max
Output Voltage(V) Io=full Ambient temperature 4.95 5.05 11.88 12.12 14.85 15.15
load high and low temperature 4.85 5.15 11.64 12.36 14.55 15.45
Output Current(A) Vin = 16 TO 40 VDC — 5 — 2.5 — 2
Output Power(W) — — 25 — 30 — 30
Output Ripple Voltage
(mV) 		BW=10 kHz  to 2 MHz
Io=full load 		Ambient temperature — 50 — 40 — 40
high and low temperature — 90 — 90 — 90
Line Regulation
(mV) 		Vin  = 16 TO 40 VDC,
Io=full load 		— 50 — 50 — 50
Load Regulation
(mV) 		Io=No load to load — 50 — 50 — 50
Input Ripple Current
(mA) 		BW=10 kHz to 10 MHz
Io=full load 		— 50 — 50 — 50
Efficiency
(%) 		Io=full load Ambient temperature 76 — 80 — 80 —
high and low temperature 73 — 77 — 78 —
Isolation
(MΩ) 		Input to output or any pin to case (except pin7,8) at 500 VDC,
TA = 25° C 		100 — 100 — 100 —
Inhibit Function TA = 25° C，Inhibit voltage, output disabled yes yes yes
Protection Function TA = 25° C yes yes yes
Start-up Overshoot (mV pk) Vin=0 to 28V, Io=full load — 50 — 120 — 150
Start-up Delay
(ms) 		Vin=0 to 28V, Io=full load — 5 — 5 — 5
Capacitive Load
(μF) 		TA = 25° C, No effect on DC performance — 300 — 3000 — 3000


Switching Frequency(kHz)

Io=full load

400

600

400

600

400

600

Step Load Response Transient (mV pK)

50% load -- full load -50% load

-300

300

-400

400

-500

500

Step Load Response

Recovery  (µs)

50% load -- full load -50% load

—

200

—

200

—

200

Step Line Response Transient (mV pK)

Vin=16~40V, Io=full load

Vin=40~16V, Io=full load

-300

300

-500

500

-600

600

Step Line Response

Recovery   (µs )

Vin=16~40V, Io=full load

Vin=40~16V, Io=full load

—

300

—

300

—

300

Load  Fault  Short Circuit recovery  (ms)

short circuit to full load

—

5

—

5

—

5

Notes to Specifications:
  • The step load transition time should be greater than or equal to 10µs.
  • The step line transition time should be greater than or equal to 10µs.
  • Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.

HTR28S3R3 ,HTR28S18

Table3  Electrical Characteristics: (TCASE = -55°C
Single output models HTR28S3R3 HTR28S18
Parameter Conditions Min Max Min Max
Output Voltage Io=full Ambient temperature 3.267 3.333 17.82 18.18
(V) load high and low temperature 3.201 3.399 17.46 18.54
Output Current(A) Vin= 16 TO 40 VDC — 6.06 — 1.67
Output Power(W) — — 20 — 30
Output Ripple Voltage BW=10kHzto 2 MHz Ambient temperature — 40 — 40
(mV) Io=full load
high and low temperature — 50 — 90
Line Regulation(mV) Vin  = 16 TO 40 VDC,Io=full load — 10 — 50
Load Regulation(mV) Io=No load to load — 10 — 50
Input Ripple Current(mA) BW=10 kHz to 10 MHz, Io=full load — 50 — 50
Efficiency (%) Io=full load Ambient temperature 74 — 81 —
high and low temperature 71 — 78 —
Isolation (MΩ) Input to output or any pin to case (except pin7,8) at 500 VDC, TA = 25°C 100 — 100 —
Inhibit Function TA = 25°C，Inhibit voltage, output disabled yes yes
Protection Function TA = 25°C yes yes
Start-up Overshoot (mV pk) Vin=0 to 28V, Io=full load — 50 — 180
Start-up Delay(ms) Vin=0 to 28V, Io=full load — 5 — 5
Capacitive Load(μF) TA = 25°C, No effect on DC performance — 300 — 2000
Switching Frequency(kHz) Io=full load 400 600 400 600
Step Load Response Transient (mV pK) 50% load -- full load -50% load -250 250 -600 600
Step Load Response 50% load -- full load -50% load — 200 — 200
Recovery  (µs)
Step Line Response Transient (mV pK) Vin=16~40V, Io=full load， -300 300 -800 800
Vin=40~16V, Io=full load
Step Line Response Vin=16~40V, Io=full load， — 300 — 300
Recovery   (µs ) Vin=40~16V, Io=full load
Load  Fault  Short Circuit recovery  (ms) short circuit to full load — 5 — 5
Notes to Specifications:
  • The step load transition time should be greater than or equal to 10µs.
  • The step line transition time should be greater than or equal to 10µs.
  • Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.

HTR28D5(F),  HTR28D12(F),  HTR28D15(F)
Table 4  Electrical Characteristics: (TCASE = -55°C to +125°C, VIN = 28V ± 0.5V, Full Load5, Unless Otherwise Specified)
Dual output models HTR28D5(F) HTR28D12(F) HTR28D15(F)
Parameter Conditions Min Max Min Max Min Max
Output Voltage
(V) 		Io1=Io2=full
load 		Ambient temperature 4.95 5.05 11.88 12.12 14.85 15.15
high and low temperature 4.85 5.15 11.64 12.96 14.55 15.45
Ambient temperature -5.075 -4.925 -12.18 -11.82 -15.23 -14.77
high and low temperature -5.172 -4.825 -12.42 -11.58 -15.53 -14.47
Output Current(A) VIN = 16 TO 40 VDC — 2.5 — 1.25 — 1
Output Power
(W) 		— — 25 — 30 — 30
Output Ripple Voltage
(mV) 		BW=10 kHz to 2 MHz
Io1= Io2= full
load 		Ambient temperature — 40 — 80 — 80
high and low temperature — 90 — 120 — 120
Ambient temperature — 40 — 80 — 80
high and low temperature — 90 — 120 — 120
Line Regulation
(mV) 		VIN = 16 TO 40 VDC,
Io1= Io2= full load 		+Vout — 50 — 50 — 50
-Vout — 100 — 150 — 180
Load Regulation
(mV) 		Io1= Io2=No load to full load +Vout — 50 — 50 — 50
-Vout — 100 — 150 — 180
Input Ripple current  (mA) BW=10 kHz  to 10 MHz
Io1= Io2= full load 		— 50 — 50 — 50
Efficiency
(%) 		Io1= Io2=full load Ambient temperature 76 — 79 — 80 —
high and low temperature 73 — 76 — 77 —
Isolation
(MΩ) 		Input to output or any pin to case (except case ground pin) at 500 VDC, TA = 25° C 100 — 100 — 100 —
Inhibit Function
Protection Function 		TA = 25° C，Inhibit voltage, output disabled
TA = 25° C 		yes yes yes
yes yes yes
Start-up Overshoot (mV pk) Vin=0 to 28V,  Io1=Io2=full load -180 180 -120 120 -150 150
Start-up Delay
(ms) 		Vin=0 to28V,  Io1=Io2=full load — 5 — 5 — 5
Capacitive Load(μF) TA = 25° C, No effect on DC performance — 500 — 500 — 500
Switching Frequency
(kHz) 		Io=full load 400 600 400 600 400 600
Step Load Response Transient
(mV pK) 		50% load to full load or full load to  50% load -300 300 -300 300 -400 400


Step Load Response

Recovery (µs)

50% load to full load or full load to  50% load,

—

200

—

200

—

200

Step Line Response Transient (mV pK)

Vin=16~40V,  Io1= Io2=full load

Vin=40~16V,  Io1= Io2=full load


-400

400

-400

400

-500

500

Step Line Response

Recovery (µs )

Vin=16~40V,  Io1= Io2=full load

Vin=40~16V,  Io1= Io2=full load

—

300

—

300

—

300

Load  Fault  Short Circuit recovery  (ms)

Io1= Io2 : short circuit to full load

—

5

—

5

—

5

(to be continued) Table 4  Electrical Characteristics

Notes to Specifications:
  • The step load transition time should be greater than or equal to 10µs.
  • The step line transition time should be greater than or equal to 10µs.
  • Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.

HTR28T512(F), HTR28T515(F)
Table 5  Electrical Characteristics: (TCASE = -55°C to +125°C, VIN = 28V ± 0.5V, Full Load5, Unless Otherwise Specified)
Triple output models HTR28T512(F) HTR28T515(F)
Parameter Conditions Min Max Min Max
Output Voltage
(V) 		Io1= Io2= Io3 =full load Ambient temperature 4.95 5.05 4.95 5.05
high and low temperature 4.85 5.15 4.85 5.15
Ambient temperature 11.82 12.18 14.77 15.23
high and low temperature 11.58 12.42 14.47 15.52
Ambient temperature -12.18 -11.82 -15.23 -14.77
high and low temperature -12.42 -11.58 -15.52 -14.47
Output Current
(A) 		VIN = 16 TO 40 VDC +5Vout 0.1 4 0.1 4
+Vout — 0.416 — 0.333
-Vout — 0.416 — 0.333
Output Power
(W) 		— — 30.84 — 30.84
Output Ripple Voltage(mV) BW=10 kHz  to 2 MHz
Io1= Io2= Io3 = full load 		+5Vout — 125 — 125
+Vout -60 60 -60 60
-Vout -60 60 -60 60
Line Regulation
(mV) 		VIN = 16 TO 40 VDC,
Io1= Io2= Io3 = full load 		+5Vout — 20 — 20
+Vout -75 75 -75 75
-Vout -75 75 -75 75
Load Regulation
(mV) 		Io1= Io2= Io3 =No load to full load +5Vout — 50 — 50
+Vout -75 75 -75 75
-Vout -75 75 -75 75
Input Ripple current (mA) BW=10 kHz  to 10 MHz Ambient temperature — 45 — 45
Io= full load high and low temperature — 80 — 80
Efficiency (%) Io1= Io2= Io3=full load Ambient temperature 72 — 73 —
high and low temperature 70 — 71 —

Isolation  (MΩ) Input to output or any pin to case (except pin 6,7) at 500 VDC, TA = 25° C 100 — 100 —
Inhibit Function TA = 25° C，Inhibit voltage, output disabled yes yes
Protection Function TA = 25° C yes yes
Start-up Overshoot (mV pk) Vin=0 to 28V,  Io =full load +5Vout — 500 — 500
+Vout — 1500 — 1500
-Vout — 1500 — 1500
Start-up Delay(ms) Vin=0 to28V,  Io =full load — 6 — 6
Capacitive Load(μF) TA = 25° C, No effect on DC performance — — — —
Switching Frequency(kHz) Io=full load 400 600 400 600
Step Load Response Transient (mV pK) 50% load to full load or full load to  50% load, +5Vout -250 250 -250 250
+Vout -800 800 -800 800
-Vout -800 800 -800 800
Step Load Response Recovery (mV pK) 50% load to full load or full load to  50% load, +5Vout — 100 — 100
+Vout — 4000 — 4000
-Vout — 4000 — 4000
Step line Response Transient (mV pK) Vin=16~40V,  Io =full load
Vin=40~16V,  Io =full load 		-800 800 -800 800
Step Line Response Vin=16~40V,  Io =full load
Vin=40~16V,  Io =full load 		— 5000 — 5000
Recovery (µs )
Load  Fault recovery  (ms) Io :short circuit to full load — 6 — 6



Notes to Specifications:
  • The step load transition time should be greater than or equal to 10µs.
  • The step line transition time should be greater than or equal to 10µs.
  • Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.

HTR28T515-A , HTR28T515-B
Table 6  Electrical Characteristics: (TCASE = -55°C to +125°C, VIN = 28V ± 0.5V, Full Load5, Unless Otherwise Specified)
Parameter Conditions Min Max Min Max
Output Voltage
(V) 		Io1= Io2= Io3 =full load Ambient temperature 4.9 5.1 4.9 5.1
high and low temperature 4.8 5.2 4.8 5.2
Ambient temperature -15.15 -14.85 -15.15 -14.85
high and low temperature -15.4 -14.6 -15.4 -14.6
Ambient temperature 14.85 15.15 14.85 15.15
high and low temperature 14.6 15.4 14.6 15.4
Output Current
(A) 		VIN = 16 TO 40 VDC +5Vout 3 — 3 —
+Vout 0.5 — 0.5 —
-Vout 0.5 — 0.5 —
Output Power(W) — — 30.84 — 30.84
Output Ripple Voltage
(mV) 		BW=10 kHz  to 2 MHz
Io1= Io2= Io3 = full load 		+5Vout — 50 — 80
+Vout — 100 — 100
-Vout — 100 — 100
Line Regulation
(mV) 		VIN = 16 TO 40 VDC,
Io1= Io2= Io3 = full load 		+5Vout — 50 — 50
+Vout — 80 — 80
-Vout — 80 — 80
Load Regulation
(mV) 		Io1= Io2= Io3 =No load to full load +5Vout — 50 — 50
+Vout — 80 — 100
-Vout — 80 — 100
Input Ripple current (mA)
Efficiency (%) 		BW=10 kHz  to 10 MHz Io= full load
Io1= Io2= Io3=full load 		— — — —
75 — 75 —
Isolation
(MΩ) 		Input to output or any pin to case (except pin 6,7) at 500 VDC, TA = 25° C 100 — 100 —
Inhibit Function TA = 25° C，Inhibit voltage, output disabled
TA = 25° C 		yes yes
Protection Function — —
Start-up Overshoot (mV pk) Vin=0 to 28V,  Io =full load +5Vout — — — —
+Vout
-Vout
Start-up Delay(ms)
Capacitive Load(μF) 		Vin=0 to28V,  Io =full load
TA = 25° C, No effect on DC performance 		— — — —
— — — —
Switching Frequency(kHz) Io=full load — — — —
Step Load Response Transient (mV pK) 50% load to full load or full load to  50% load, +5Vout — — — —
+Vout
-Vout
Step Load Response Recovery (mV pK) 50% load to full load or full load to  50% load, +5Vout — — — —
+Vout
-Vout
Step line Response Transient (mV pK) Vin=16~40V,  Io =full load
Vin=40~16V,  Io =full load 		— — — —
Step Line Response
Recovery (µs ) 		Vin=16~40V,  Io =full load
Vin=40~16V,  Io =full load 		— — — —
Load  Fault recovery  (ms) Io :short circuit to full load — — — —
Notes to Specifications:
  • The step load transition time should be greater than or equal to 10μs.
  • The step line transition time should be greater than or equal to 10μs.
  • Recovery time is measured from application of the transient to point at which VOUT is within 1% of VOUT at final value.

4 TYPICAL PERFORMANCE CURVES

(1)Single output (Model HTR28S15)



Figure 2  Efficiency (Output Power)
 Figure 3  Step Load Response


Figure 4 Step Line response
 Figure 5 Start-up Overshoot/ Start-up Delay

Pin Plating(2)Dual Output (Model HTR28D15)
Figure 6 Efficiency (Output Power)
 Figure 7 Step Line response


Figure 8 Step Load Response
 Figure 11 Step Line response

(3) Triple output (Model HTR28T515)
Figure 10 Efficiency (Output Power)
 Figure 11 Step Line response


Figure12 Step Load Response
 Figure13 Start-up Overshoot/ Start-up Delay


5 TYPICAL MTBF CURVES of HTR28 Series Mil-grade DC to DC Converter



Figure 14 Model HTR28S12         Figure 15 Model HTR28D12         Figure 16 Model HTR28T515-A



6 TYPICAL CONNECTION DIAGRAM of HTR28 Series Mil-grade DC-DC Converters

Figure 17 Application Connection Diagram for Single output models
 Figure 18 Application Connection Diagram for Dual output models
 Figure 19 Application Connection Diagram for Triple output models

Figure 20 Inhibit Drive connection Diagram for Single Output Models
 Figure21 Inhibit Drive connection Diagram for Dual Output Models
 Figure 22 Inhibit Drive connection Diagram for Triple Output Models



Figure23  Single Output Converter with EMI Filter connection Diagram
 Figure24  Dual Output Converter with EMI Filter connection Diagram
 Figure25  Triple Output Converter with EMI Filter connection Diagram

7 PACKAGE SPECIFICATIONS (Units:mm) of HTR28 Series Mil-grade DC DC Converter

Bottom View
Side View
Figure 26 Single Output Model
Bottom View
Side View
Figure 27 Dual Output Model
Bottom View
Side View
Figure 28 Triple Output Model

Table 7 Package Outline

Table 8 Package Outline OF Model HTR28T512(F), Model HTR28T515(F)

Table 9 Package Outline OF Model HTR28T515-A, Model HTR28T515-B

Table 10  Case Materials
Case Model
 Header
 Header Plating
 Cover
 Cover Plating
 Pin
 Pin Plating
 Sealing Style
 Notes
UPP5429-10
(Single&Dual )
 Cold Rolled Steel(10#)
 Nickel
 Iron/Nickel Alloy(4J42)
 Nickel
 Copper
Compound
 Nickel/Gold
 Compression Seal
 Nickel plating is for case ground pin.
UPP5034-10c
(Triple )
 Cold Rolled Steel(10#
 Nickel
 Iron/Nickel Alloy(4J42)
 Nickel
 Iron/Nickel Alloy(4J50)
 Nickel/Gold
 Compression Seal
 Nickel plating is for  case ground pin.

8 PIN DESIGNATION of HTR28 Series Mil-grade DC to DC Converter


Figure29  Pin Out Bottom View
(Single)
 Figure29  Pin Out Bottom View
(Dual)
 Figure29  Pin Out Bottom View
(Triple)

Table 11 Pin designation

Pin

Single Output

Dual Output

Triple Output

1

Positive Input

Positive Input

Positive Input

2

Inhibit

Inhibit

Positive Output (5V)

3

Negative Inductive

Positive Output

Output Common

4

Output Common

Output Common

Negative Output

5

Positive Output

Negative Output

Positive Output

6

Positive Inductive

Case Ground

Case Ground


Tags : thick film DC-DC Converter military grade DC-DC converters Hi Reliable DC-DC Converter
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