DC2150A - LTC4366-2/LT4363-2 28V MIL-STD-1275D Surge ......(Q3’s) source is regulated to 66V by...

1dc2150af

DEMO MANUAL DC2150A

DESCRIPTION

LTC4366-2/LT4363-228V MIL-STD-1275D Surge Stopper

Demonstration circuit 2150A uses the LTC®4366-2 and LT4363-2 surge stoppers to satisfy MIL-STD-1275D. This specification, created by the United States Department of Defense, sets down requirements of electrical systems powered from a military vehicle’s 28V power supply. DC2150A’s output voltage is limited to 44V when faced with MIL-STD-1275D’s onerous surge, spike, and ripple conditions. In most circumstances, satisfying MIL-STD-1275D is as simple as placing this circuit in front of a 44V tolerant device. The default version, DC2150A-C, provides a minimum of 4A to the output in all conditions except the ±7V ripple condition (14Vpeak-to-peak). During the ripple condition, DC2150A-C provides a minimum of 2.8A to the load. Exceeding 2.8A during the input ripple condition may cause DC2150A-C to timeout and shutoff in less than

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

MIL-STD-1275D’s one minute ripple ride-through require-ment. DC2150A’s MOSFETs are protected against output overloads by current limiting. Sustained overvoltage or overcurrent conditions cause the circuit to turn off after a timer delay. It automatically retries after a cooldown cycle.

DANGER! HIGH VOLTAGE TESTING SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY. AS A SAFETY PRECAUTION AT LEAST TWO PEOPLE SHOULD BE PRESENT DURING HIGH VOLTAGE TESTING.

Design files for this circuit board are available at http://www.linear.com/demo/DC2150A

Specifications for DC2150A-C are at TA = 25°C

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input Supply Operating 8 28 40 V

500ms Surge 100 V

Survival (with Optional TVS Removed) –250 250 V

Output Regulation Voltage 41 43.6 46 V

Current Limit 4.4 5 5.6 A

http://www.linear.com/LTC4366

http://www.linear.com/LTC4363

http://www.linear.com/demo/DC2150A

2dc2150af

DEMO MANUAL DC2150A

QUICK START PROCEDUREConnect a 28V supply to the input and connect a load at the output. A good output load choice is a 10Ω power resistor rated at more than 200W. If the banana jacks are used, no connections are necessary at the turrets. The green LED turns on to indicate that the output is powered.

If the load at the output sinks less than 28mA, place jumper JP1 in the 1kΩ position to preload the output (be aware that preload resistors R34 and R35 may become hot as they dissipate nearly 2W when the input is at 44V). With less than 28mA of load current, MIL-STD-1275D’s repeated 100V/50ms input surge test causes capacitors C1-C12 to remain charged at 67V for an extended period of time while the output voltage is regulated to 44V. This is not harmful, but it may cause the LT4363 to timeout and shutoff Q4.

Now, lower the input voltage to 8V. The output remains powered. In fact, the output remains powered to even

DC2150A is available from Linear Technology as DC2150A-C. This C version provides 4A to the load dur-ing all conditions except the ripple condition, where 2.8A is available to the load for up to one minute. Exceeding 2.8A during the ripple condition may cause the circuit to timeout in less than one minute. DC2150A-C provides un-interrupted power to the load during both the 100V/500ms worst-case surge envelope of MIL-STD-1275D and the repeated 100V/50ms recommended test. (Figure 1 shows DC2150A-C riding through the 100V/500ms surge. Figure 2 shows it riding through the repeated 100V/50ms surges. Figure 5 shows DC2150A-C providing uninterrupted power during a ±7V input ripple event.)

Schematics and a bill of materials are provided for three additional assembly options. Versions DC2150A-A and DC2150A-B provide a minimum of 2A of current to the load

lower voltages, but component tolerances, especially the MOSFET threshold voltages, prevent guaranteed opera-tion below 8V.

Next, raise the input voltage above 50V. The output shuts off as the circuit detects a high input voltage. Once the input is brought back to 28V, the output power is automatically reapplied after a cooldown timer cycle. Be patient, it can take 30 seconds for power to be reapplied.

MIL-STD-1275D Requirements

Refer to Linear Technology Journal article, High Voltage Surge Stoppers Ease MIL-STD-1275D Compliance by Replacing Bulky Passive Components, and the MIL-STD-1275D, Characteristics of 28 Volt DC Electrical Systems in Military Vehicles, United States Department of Defense In-terface Standard for a thorough description of requirements.

and ride through the 100V/50ms repeated surges specified in the MIL-STD-1275D recommended tests. These versions are not guaranteed to ride through the worst-case 500ms envelope in the MIL-STD-1275D specifications. No dam-age will occur, but these versions may shut off when faced with the full 100V/500ms worst-case envelope. Versions DC2150A-C and DC2150A-D provide at least 4A of current to the load and ride through the 100V/50ms repeated surges and the full worst-case 100V/500ms surge. (Refer to the MIL-STD-1275D standard and Linear Technology Journal article, High Voltage Surge Stoppers Ease MIL-STD-1275D Compliance by Replacing Bulky Passive Components, for a more thorough description of these requirements.) Versions DC2150A-A and DC2150A-C provide 1A and 2.8A during the ripple condition, respectively. Versions DC2150A-B and DC2150A-D shutoff immediately when ripple occurs on the input, but they have a reduced bill of materials cost.

ASSEMBLY OPTIONS

Table 1. DC2150A Assembly Options

STUFFING OPTION MAX LOAD MAX LOAD DURING RIPPLE100V/50ms SURGE

(FIVE REPEATS) 100V/500ms SURGEDC2150A-A 2A 1A Yes No

DC2150A-B 2A N/A Yes No

DC2150A-C 4A 2.8A Yes Yes

DC2150A-D 4A N/A Yes Yes

3dc2150af

DEMO MANUAL DC2150A

Unless otherwise specified, the description of circuit operation that follows applies to the default assembly option DC2150A-C.

100V/500ms Surge

In MIL-STD-1275D, the worst-case MOSFET power dis-sipation condition occurs during the 100V input surge. The circuit shown in the schematic diagram regulates the output voltage to 44V. As a result, the circuit must drop 56V from the 100V input to the 44V output. In this MIL-STD-1275D solution, to increase power available at the output, two series MOSFETs are used. The first MOSFET’s (Q3’s) source is regulated to 66V by the LTC4366, while the second MOSFET’s (Q4’s) source is regulated to 44V by the LT4363. This reduces the power that must be dis-sipated in either single MOSFET.

Figures 1 and 2 show the results measured during surge

testing. The oscilloscope waveform in Figure 1 shows this circuit operating through the full 100V/500ms MIL-STD-1275D surge requirement. Figure 2 shows this circuit operating through the less stringent 100V/50ms pulses described in MIL-STD-1275D’s recommended tests.

±250V Spike and Reverse Input Protection

The 250V spike condition is handled by MOSFET Q3. It is rated to withstand over 300V from drain to source, blocking the 250V spike condition seen at the input. MIL-STD-1275D specifies that the input energy is limited to 15mJ which is easily handled by this MOSFET. Figure 3 shows the results of the 250V spike measured during MIL-STD-1275D testing.

Similarly, the –250V spike test result is shown in Figure 4. In this condition, diode D4 is reverse biased during the –250V spike, blocking the spike from Q4 and the output.

CIRCUIT OPERATION

Figure 1. MIL-STD-1275D 100V/500ms Surge Test

Figure 2. MIL-STD-1275D 100V/50ms Surge Repeated Five Times

100ms/DIV

VIN20V/DIV

VOUT20V/DIV

IOUT2A/DIV

100V

43V

4.3A

28V

27V

2.7ARLOAD = 10Ω

500ms/DIV

VIN20V/DIV

VOUT20V/DIV

IOUT2A/DIV

28V

27V27V27V

2.7A

RLOAD = 10Ω

100V

43V

4.3A

Figure 3. Positive Input Spike

1µs/DIV

VIN50V/DIV

VOUT50V/DIV

IOUT5A/DIV

250V SPIKE

28V

27V

2.7A

RLOAD = 10Ω

Figure 4. Negative Input Spike

1µs/DIV

VIN50V/DIV

VOUT50V/DIV

IOUT5A/DIV

−250V SPIKE

2.7A

28V

27V

RLOAD = 10Ω

4dc2150af

DEMO MANUAL DC2150A

CIRCUIT OPERATIOND4 additionally provides reverse polarity protection, preventing negative input voltages from showing up at the output. (The LTC4366 surge stopper in front of D4 is capable of withstanding reverse voltages and the –250V spike without additional protection.)

An optional bidirectional TVS (Transient Voltage Suppres-sor) is present at the input to provide extra protection. Its 150V breakdown voltage does not affect circuit operation below 100V. For applications where a TVS is not desirable at the input, this optional component can be removed. Note that the output voltage trace (VOUT) during the MIL-STD-1275D spike tests in Figures 3 and 4 shows high frequency ringing which is a measurement artifact of the large currents that flow in supply and ground traces when the 0.1µF test circuit capacitor is discharged directly at the circuit input with all resistances and inductances minimized.

±7V Ripple

Satisfying the ripple specification of MIL-STD-1275D requires several more components. Diode D4 in combi-nation with capacitors C1-C12 form an AC rectifier. This rectified signal appears at the RIPCAP node. The LT4363 in combination with sense resistor R3 limits the maximum current to 5A (typical). If the rising edge of the input ripple waveform attempts to pull up the output capacitor with more than 5A, the LT4363 momentarily limits the current by pulling down on Q4’s gate. To quickly restore the gate voltage, the small charge pump formed by components D5, D6, C24, C25, and C26 supplements the LT4363’s internal charge pump to quickly pull up MOSFET Q4’s gate. Even still, the available load current must be reduced to 2.8A during this ripple condition. Figure 5 shows that the output remains powered during ripple testing.

Finally, thermal protection is implemented by components R25, R26, R27, Q6-1, Q6-2,Q5-1 and thermistor R29. If the temperature at Q4’s heat sink exceeds 105°C, the LT4363’s UV pin is pulled down by Q5-1 to force off MOSFET Q4 and limit its maximum temperature.

Starting Mode Initial Engagement Surge

It should also be noted that with the specified components, this circuit is only guaranteed to work down to a minimum of 8V during the starting mode initial engagement surge rather than the minimum 6V specified in MIL-STD-1275D.

DC2150A Assembly Options

Assembly options DC2150A-B and DC2150A-D eliminate capacitors C1-C12 to reduce total solution cost. In those assembly options, C25, C27, R31, R32, D7-1, and D7-2 inject a small current into the LT4363’s TIMER on each rising edge of the input ripple (which appears at the SOURCE1 node). In the face of ripple, those components will force the LT4363 to timeout quickly and turn off Q4.

Figure 5. 14VP-P Input Ripple Condition

10ms/DIV

VIN5V/DIV

VOUT5V/DIV

IOUT1A/DIV

21V

20.3V

RLOAD = 10Ω

34V

35V

28V

27.15V

2.715A

5dc2150af

DEMO MANUAL DC2150A

PCB LAYOUTDC2150A is designed to withstand input voltages from 250V to –250V when the optional 150V bidirectional TVS DP1 is removed. The maximum positive input voltage is limited by the 300V BVDSS rating of the input MOSFET (Q1 on DC2150A-A/DC2150A-B, and Q3 on DC2150A-C/DC2150A-D). The negative input voltage is limited by the series diode (D1 on DC2150A-A/DC2150A-B, and D4 on DC2150A-C/DC2150A-D).

Upstream of the RIPCAP node, spacings and component package sizes have been chosen to support the high voltages that may be present. Traces and components downstream of the RIPCAP node are limited to less than 67V by Q1/Q3 and the LTC4366. Negative voltages are blocked from traces and components downstream of the RIPCAP node by D1/D4.

Top Silkscreen

6dc2150af

DEMO MANUAL DC2150A

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 C13 CAP., X7R, 0.1µF, 100V 10% 1210 KEMET, C1210C104K1RAC7025

2 1 C14 CAP., X7R, 0.1µF, 500V 10% 1210 KEMET, C1210C104KCRACTU

3 0 C15, C28 CAP., OPT, 2220 OPTION

4 1 C17 CAP., X7R, 0.047µF, 100V 10% 0805 TDK, C2012X7R2A473K125AA

5 1 C18 CAP., ALUM., 68µF 50V 20% SMT SUN ELECT., 50CE68LX

6 1 C19 CAP., X7R, 0.1µF, 100V 10% 0805 TDK, C2012X7R2A104K125AA

7 1 C20 CAP., X7R, 0.47µF, 100V 10% 0805 AVX, 08051C474KAZ2A

8 1 C22 CAP., X7R, 1µF, 16V 10% 0805 TDK, C2012X7R1C105K085AC

9 1 C25 CAP., X7R, 1µF, 250V 10% 2220 TDK, C5750X7R2E105K230KA

10 1 DP1 DIODE, TVS, OPT., SMB VISHAY, P65MB150CA-E3/52

11 0 DP2 DIODE, TVS, OPT., SMC OPTION

12 1 D2 DIODE, SWITCHING, SOT-323 DIODES INC., BAS21W-7-F

13 1 D3 DIODE, SCHOTTKY, 30V 200mA, SOT-23 DIODES INC., BAT54-7-F

14 1 D9 LED, GREEN, DIFFUSED, 0805 AVAGO, HSMG-C170

15 4 E1, E3, E6, E7 BANANA JACK, NON-INSULATED KEYSTONE, 575-4

16 3 E2, E5, E11 TEST POINT, TURRET, 0.061, PBF MILL-MAX, 2308-2-00-80-00-00-07-0

17 4 E4, E8, E9, E10 TEST POINT, TURRET, 0.094, PBF MILL-MAX, 2501-2-00-80-00-00-07-0

18 1 JP1 HEADER, 2X2 PIN, 0.079CC SULLINS, NRPN022PAEN-RC

19 4 MP1, MP2, MP3, MP4 STANDOFF, NYLON 0.5" KEYSTONE, 8833 (SNAP ON)

20 2 Q5, Q6 TRANSISTOR, DUAL NPN, SOT-363 DIODES INC., MMDT5551-7-F

21 2 R1, R2 RES., CHIP, HIGH POWER, 100Ω, 3/4W, 5% 1210 VISHAY, CRCW1210100RJNEAHP

22 1 R4 RES., CHIP, 237k, 1/4W, 1% 1206 VISHAY, CRCW1206237KFKEA

23 1 R5 RES., CHIP, 100Ω, 1/8W, 1% 0805 YAGEO, RC0805FR-07100RL

24 1 R6 RES., CHIP, 10Ω, 1/8W, 5% 0805 VISHAY, CRCW080510R0JNEA

25 1 R7 RES., CHIP, 10k, 1/4W, 5% 1206 PANASONIC, ERJ-8GEYJ103V

26 1 R8 RES., CHIP, 30.1Ω, 1/8W, 1% 0805 VISHAY, CRCW080530R1FKEA

27 1 R9 RES., CHIP, 12.1k, 1/8W, 1% 0805 VISHAY, CRCW080512K1FKEA

28 1 R10 RES., CHIP, 1k, 1/2W, 1% 1210 VISHAY, CRCW1210KOOFKEA

29 2 R11, R13 RES., CHIP, 332k, 1/8W, 1% 0805 VISHAY, CRCW0805332KFKEA


31 3 R14, R26, R27 RES., CHIP, 301k, 1/8W, 1% 0805 VISHAY, CRCW0805301KFKEA

32 2 R15, R19 RES., CHIP, 10k, 1/8W, 1% 0805 VISHAY, CRCW080510K0FKEA

33 3 R16, R17, R18 RES., CHIP, 18.2k, 1/2W, 1% 1210 VISHAY, CRCW121018K2FKEA


35 0 R23 RES., CHIP, OPT, 0805 OPTION

36 1 R28 RES., CHIP, 1k, 1/8W, 5% 0805 NIC, NRC10J102TRF

37 1 R33 RES., CHIP, 9.31k, 1/2W, 1% 1210 PANASONIC, ERJ-14NF9311U

PARTS LIST

7dc2150af

DEMO MANUAL DC2150A


38 2 R34, R35 RES., CHIP, 2k, 1W, 1% 2010 VISHAY, CRCW20102K00FKEFHP

39 0 R36 RES., CHIP, 10M, 1/4W, 5% 1206, OPTION PANASONIC, ERJ-8GEYJ106V (OPTION)

40 1 U1 IC, HIGH VOLTAGE SURGE STOPPER, TS8 LINEAR TECH., LTC4366HTS8-2#TRMPBF

41 1 U2 IC, HIGH VOLTAGE SURGE STOPPER WITH CURRENT LIMIT, SOIC

LINEAR TECH., LT4363HS-2#PBF

42 1 XJP1 SHUNT, 2mm SAMTEC, 25N-BK-G

DC2150A-A Required Circuit Components

1 1 DC2150A DC2150A GENERAL BOM

2 12 C1-C12 CAP., X7S, 10µF, 100V 20% 2220 TDK, C5750X7S2A106M230KB

3 1 C16 CAP., X7R, 0.022µF, 100V 10% 1206 KEMET, C1206C223K1RACTU


5 0 C23, C27 NOT USED

6 2 C24, C26 CAP., X7R, 1µF, 250V 10% 2220 TDK, C5750X7R2E105K230KA

7 1 D1 DIODE ARRAY, TO-263 VISHAY, UHB20FCT-E3/4W

8 0 D4, D7, D8 NOT USED

9 2 D5, D6, D10 DIODE ARRAY, SOT23 DIODES INC., MMBD3004S-7-F

10 0 HS1, HS2, HS3 NOT USED

11 1 Q1 TRANS., MOSFET N-CH., 300V, TO-263 IXYS, IXTA36N30P

12 1 Q2 TRANS., MOSFET N-CH., 75V, TO-263 FAIRCHILD, FDB045AN08A0

13 0 Q3, Q4 NOT USED

14 1 R3 RES., CHIP, CURRENT SENSE, 0.020Ω, 1/2W, 1% 1206 IRC, LRC-LRF-1206LF-01-R020F

15 1 R21 RES., CHIP, 5.6M, 1/8W, 5% 0805 PANASONIC, ERJ-6GEYJ565V

16 1 R22 RES., CHIP, 0Ω, 1/8W, 0805 YAGEO, RC0805JR-070RL

17 1 R24 RES., CHIP, 20k, 1/8W, 5% 0805 VISHAY, CRCW080520K0JNEA


19 1 R30 THERMISTOR, PTC, 470Ω , 0603 EPCOS, B59601A0105A062

20 0 R29, R31, R32 NOT USED

PARTS LIST

8dc2150af

DEMO MANUAL DC2150A

PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

DC2150A-B Required Circuit Components


2 0 C1-C12 NOT USED



5 0 C23, C24, C26 NOT USED


7 1 D1 DIODE ARRAY, TO-263 VISHAY, UHB20FCT-E3/4W

8 0 D4, D5, D6, D10 NOT USED

9 1 D7 DIODE ARRAY, SOT23 CENTRAL SEMI., CMPSH-3SE

10 1 D8 DIODE, ZENER 3.3V 500mW SOD-123 DIODES INC., MMSZ5226B-7-F

11 0 HS1, HS2, HS3 NOT USED

12 1 Q1 TRANS., MOSFET N-CH., 300V, TO-263 IXYS, IXTA36N30P

13 1 Q2 TRANS., MOSFET N-CH., 75V, TO-263 FAIRCHILD, FDB045AN08A0



16 0 R21, R22, R24, R29 NOT USED


18 1 R30 THERMISTOR, PTC, 470Ω , 0603 EPCOS, B59601A0105A062

19 1 R31 RES., CHIP, 10k, 1/2W, 5% 1210 PANASONIC, ERJ-14YJ103U

20 1 R32 RES., CHIP, 100k, 1/8W, 5% 0805 YAGEO, RC0805JR-07100KL

9dc2150af

DEMO MANUAL DC2150A

PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

DC2150A-C Required Circuit Components


2 12 C1-C12 CAP., X7S, 22µF, 100V 20% 2220 TDK, CKG57NX7S2A226M500JH


4 1 C21 CAP., X7R, 2.2µF, 25V 10% 0805 TDK, CGA4J3X7R1E225K125AB

5 1 C23 CAP., X7R, 10µF, 16V 10% 0805 SAMSUNG, CL21B106KOQNNNE

6 2 C24, C26 CAP., X7R, 1µF, 250V 10% 2220 TDK, C5750X7R2E105K230KA

7 0 C27 NOT USED

8 0 D1, D7, D8 NOT USED

9 1 D4 DIODE ARRAY, TO-247 VISHAY, FEP30GP-E3/45

10 3 D5, D6, D10 DIODE ARRAY, SOT23 DIODES INC., MMBD3004S-7-F

11 3 HS1, HS2, HS3 HEATSINK, VERTICAL MOUNT ASSMANN WSW COMPONENTS, V8813X


13 1 Q3 TRANS., MOSFET N-CH., 300V, TO-3P IXYS, IXTQ88N30P



16 1 R21 RES., CHIP, 5.6M, 1/8W, 5% 0805 PANASONIC, ERJ-6GEYJ565V


18 1 R24 RES., CHIP, 20k, 1/8W, 5% 0805 VISHAY, CRCW080520K0JNEA

19 1 R25 RES., CHIP, 1k, 1/8W, 1% 0805 VISHAY, CRCW08051K00FKEA

20 1 R29 THERMISTOR, PTC, 100Ω, RADIAL LEAD EPCOS, B59901D100A40

21 0 R30, R31, R32 NOT USED

10dc2150af

DEMO MANUAL DC2150A


DC2150A-D Required Circuit Components


2 0 C1-C12, C24, C26 NOT USED


4 1 C21 CAP., X7R, 2.2µF, 25V 10% 0805 TDK, CGA4J3X7R1E225K125AB

5 1 C23 CAP., X7R, 10µF, 16V 10% 0805 SAMSUNG, CL21B106KOQNNNE


7 0 D1, D5, D6, D10 NOT USED

8 1 D4 DIODE ARRAY, TO-247 VISHAY, FEP30GP-E3/45

9 1 D7 DIODE ARRAY, SOT23 CENTRAL SEMI., CMPSH-3SE

10 1 D8 DIODE, ZENER 3.3V 500mW SOD-123 DIODES INC., MMSZ5226B-7-F

11 3 HS1, HS2, HS3 HEATSINK, VERTICAL MOUNT ASSMANN WSW COMPONENTS, V8813X






17 1 R25 RES., CHIP, 1k, 1/8W, 1% 0805 VISHAY, CRCW08051K00FKEA

18 1 R29 THERMISTOR, PTC, 100Ω, RADIAL LEAD EPCOS, B59901D100A40

19 1 R31 RES., CHIP, 10k, 1/2W, 5% 1210 PANASONIC, ERJ-14YJ103U

20 1 R32 RES., CHIP, 100k, 1/8W, 5% 0805 YAGEO, RC0805JR-07100KL

21 0 R21, R24, R30 NOT USED

PARTS LIST

11dc2150af

DEMO MANUAL DC2150A

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

SCHEMATIC DIAGRAM5 5

4 4

3 3

2 2

1 1

DD

CC

BB

AA

2P

RO

DU

CTI

ON

DA

N E

DD

LEM

AN

04/2

5/20

14-

RIP

CA

P

R29

AFF

IXE

D T

O H

S3

GN

D

OU

TPU

T

GN

D

SO

UR

CE

1

INP

UT

GN

D

STA

ND

OFF

S, 4

PLC

S

OU

TPU

T FLT

INP

UT

GN

D

-D

ASSE

MBL

Y TY

PES

-A -B -C

STUF

FING

OPTI

ONI L 2A 2A 4A 4A

MAX

LOA

DDU

RING

RIPP

LE

1A N/A

2.8A

N/A

5X10

0V/5

0ms

SURG

E10

0V/5

00m

sSU

RGE

MIL

-STD

-127

5D

HIG

H V

OLT

AG

E T

HIS

SID

E

M.H

AW

KIN

S

DA

NE

DD

LEM

AN

04/2

5/20

14

1. F

OR

CO

MP

ON

EN

TS D

ES

IGN

ATE

D W

ITH

*, R

EFE

RTO

BO

M F

OR

AP

PR

OP

RIA

TE P

AR

T N

UM

BE

RFO

R E

AC

H A

SS

EM

BLY

TY

PE

.

LTC

4366

HTS

8-2

1K NO

NE

PR

ELO

AD

NO

TES

:

2. A

LL R

ES

ISTO

RS

AR

E 0

805

PA

CK

AG

E U

.O.N

.

(OP

TIO

N)

INP

UT

REVI

SION

HIS

TORY

DESC

RIPT

ION

DATE

APPR

OVE

DEC

ORE

VRE

VISI

ON H

ISTO

RYDE

SCRI

PTIO

NDA

TEAP

PRO

VED

ECO

REV

REVI

SION

HIS

TORY

DESC

RIPT

ION

DATE

APPR

OVE

DEC

ORE

V

SIZE

DATE

:

IC N

O.

REV.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA

9503

5Ph

one:

(408

)432

-190

0

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OM

ER N

OTI

CELI

NEAR

TEC

HNOL

OGY

HAS

MAD

E A

BEST

EFF

ORT

TO D

ESIG

N A

CIRC

UIT

THAT

MEE

TS C

USTO

MER

-SUP

PLIE

D SP

ECIF

ICAT

IONS

;HO

WEV

ER, I

T RE

MAI

NS T

HE C

USTO

MER

'S R

ESPO

NSIB

ILIT

Y TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORM

ANCE

OR

RELI

ABIL

ITY.

CON

TACT

LIN

EAR

TECH

NOLO

GY A

PPLI

CATI

ONS

ENGI

NEER

ING

FOR

ASSI

STAN

CE.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MAT

IC

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

ww

w.li

near

.com 2

11

N/A

DEM

O C

IRCU

IT 2

150A

SIZE

DATE

:

IC N

O.

REV.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA

9503

5Ph

one:

(408

)432

-190

0

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OM

ER N

OTI

CELI

NEAR

TEC

HNOL

OGY

HAS

MAD

E A

BEST

EFF

ORT

TO D

ESIG

N A

CIRC

UIT

THAT

MEE

TS C

USTO

MER

-SUP

PLIE

D SP

ECIF

ICAT

IONS

;HO

WEV

ER, I

T RE

MAI

NS T

HE C

USTO

MER

'S R

ESPO

NSIB

ILIT

Y TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORM

ANCE

OR

RELI

ABIL

ITY.

CON

TACT

LIN

EAR

TECH

NOLO

GY A

PPLI

CATI

ONS

ENGI

NEER

ING

FOR

ASSI

STAN

CE.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MAT

IC

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

ww

w.li

near

.com 2

11

N/A

DEM

O C

IRCU

IT 2

150A

SIZE

DATE

:

IC N

O.

REV.

SHEE

TOF

TITL

E:

APPR

OVAL

S

PCB

DES.

APP

ENG.

TEC

HN

OLO

GY

Fax:

(408

)434

-050

7

Milp

itas,

CA

9503

5Ph

one:

(408

)432

-190

0

1630

McC

arth

y Bl

vd.

LTC

Conf

iden

tial-F

or C

usto

mer

Use

Onl

y

CUST

OM

ER N

OTI

CELI

NEAR

TEC

HNOL

OGY

HAS

MAD

E A

BEST

EFF

ORT

TO D

ESIG

N A

CIRC

UIT

THAT

MEE

TS C

USTO

MER

-SUP

PLIE

D SP

ECIF

ICAT

IONS

;HO

WEV

ER, I

T RE

MAI

NS T

HE C

USTO

MER

'S R

ESPO

NSIB

ILIT

Y TO

VERI

FY P

ROPE

R AN

D RE

LIAB

LE O

PERA

TION

IN T

HE A

CTUA

LAP

PLIC

ATIO

N. C

OMPO

NENT

SUB

STIT

UTIO

N AN

D PR

INTE

DCI

RCUI

T BO

ARD

LAYO

UT M

AY S

IGNI

FICA

NTLY

AFF

ECT

CIRC

UIT

PERF

ORM

ANCE

OR

RELI

ABIL

ITY.

CON

TACT

LIN

EAR

TECH

NOLO

GY A

PPLI

CATI

ONS

ENGI

NEER

ING

FOR

ASSI

STAN

CE.

THIS

CIR

CUIT

IS P

ROPR

IETA

RY T

O LI

NEAR

TEC

HNOL

OGY

AND

SCHE

MAT

IC

SUPP

LIED

FOR

USE

WIT

H LI

NEAR

TEC

HNOL

OGY

PART

S.SC

ALE

= NO

NE

ww

w.li

near

.com 2

11

N/A

DEM

O C

IRCU

IT 2

150A

R26

301K

R26

301K

E6

E6

R6

10 O

HM

R6

10 O

HM

C8*

C8*

E5

E5

C21

*C

21*

D7*

D7*

321

E11

E11

C25

1.0u

FC

251.

0uF

R10

1K12

10R

101K

1210

E7

E7

E1

E1

D1*

D1*

312

Q3*

Q3*

2

1

3

R21

*R

21*

R5

100

R5

100

C1*

C1*

LT43

63H

S-2

U2

LT43

63H

S-2

U2

TIMER15

VCC6

GATE4

SNS2

NC7

FLT

12O

V9

OUT1

FB16

EN

OU

T13

NC14NC5NC3

GND11

UV

10

SH

DN

8

R15

10K

R15

10K

C9*

C9*

R27

301K

R27

301K

E4

E4

C24

*C

24*

R1

100

1210

R1

100

1210

R23

OP

TR

23O

PT

R13

332K

R13

332K

E8

E8

C2*

C2*

D9

GR

EE

ND

9G

RE

EN

2 1

R16 18.2

K12

10

R16 18.2

K12

10

C10

*C

10*

R8

30.1

R8

30.1

R34

2K 2010

R34

2K 2010

C26

*C

26*

D4*

D4*

231

TR

30*

0603

TR

30*

0603

C19

0.1u

FC

190.

1uF

C22

1.0u

FC

221.

0uF

R11

332K

R11

332K

D8

*D

8*

1 2

TP1

TP1

R25

*R

25*

R32

*R

32*

C3*

C3*

Q4

*Q

4*

2

1

3

C15

OP

T22

20

C15

OP

T22

20

C11

*C

11*

HS

2*H

S2*

1

2

R17

18.2

K12

10

R17

18.2

K12

10

E2

E2

HS

3*H

S3*

12

JP1

JP1

1 342

Q1*

Q1*

3

1

2

R12

649K

1206

R12

649K

1206

C4*

C4*

LTC

4366

HTS

8-2

U1

LTC

4366

HTS

8-2

U1

TIMER3

VDD1

GATE8

OUT7

VSS4

BASE5

SH

DN

2FB

6

+C

18 68uF

+C

18 68uF

HS

1*H

S1*

12

C12

*C

12*

D10

*D

10*

32

1

R31

*12

10R

31*

1210

R9

12.1

KR

912

.1K

R18

18.2

K12

10

R18

18.2

K12

10

D3

BA

T54

D3

BA

T54

13

MP

2M

P2

D5

*D

5*

32

1

C13

0.1u

FC

130.

1uF

R3

*

1206

R3

*

1206

D2

BA

S21

WD

2B

AS

21W

13

DP

2O

PT

DP

2O

PT

21

TP3

TP3

Q2

*Q

2*

3

1

2

C5*

C5*

R4

237K

1206R

423

7K12

06C

16*

C16

*

Q6-

1Q

6-1

3 4

5

Q5-

1Q

5-1

3 4

5

R19

10K

R19

10K

C23

*C

23*

R7

10K

1206

R7

10K

1206

MP

3M

P3

C6*

C6*

R35

2K 2010

R35

2K 2010

R24

*R

24*

R36

10M

1206

R36

10M

1206

R14

301K

R14

301K

E3

E3

E10

E10

MP

4M

P4

TR

29*

THR

U-H

OLET

R29

*TH

RU

-HO

LE

R22

*R

22*

C20

0.47

uFC

200.

47uF

C28

OP

T22

20

C28

OP

T22

20 R20

100K

R20

100K

C27

*C

27*

C17

0.04

7uF

C17

0.04

7uF

R33

9.31

K12

10

R33

9.31

K12

10

D6

*D

6*

32

1

C7*

C7*

C14

0.1u

FC

140.

1uF

Q6-

2Q

6-2

6 1

2

R2

100

1210

R2

100

1210

Q5-

2Q

5-2

6 1

2

DP

1TV

SD

P1

TVS

21

E9

E9

R28

1KR28

1K

MP

1M

P1

TP4

TP4

TP2

TP2

12dc2150af

DEMO MANUAL DC2150A

Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2014

LT 0714 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Copyright © 2004, Linear Technology Corporation

DC2150A - LTC4366-2/LT4363-2 28V MIL-STD-1275D Surge ......(Q3’s) source is regulated to 66V by...

Documents

Transcript of DC2150A - LTC4366-2/LT4363-2 28V MIL-STD-1275D Surge ......(Q3’s) source is regulated to 66V by...