DC2150A - Demo Manual

DEMO MANUAL DC2150A
LTC4366-2/LT4363-2
28V MIL-STD-1275D Surge Stopper
DESCRIPTION
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-STD1275D 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
PERFORMANCE SUMMARY
MIL-STD-1275D’s one minute ripple ride-through requirement. 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
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.
Specifications for DC2150A-C are at TA = 25°C
PARAMETER
CONDITIONS
Input Supply
Operating
MIN
TYP
MAX
8
28
40
500ms Surge
100
Survival (with Optional TVS Removed)
–250
UNITS
V
V
250
V
Output Regulation Voltage
41
43.6
46
V
Current Limit
4.4
5
5.6
A
dc2150af
1
DEMO MANUAL DC2150A
QUICK START PROCEDURE
Connect 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.
lower voltages, but component tolerances, especially the
MOSFET threshold voltages, prevent guaranteed operation 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.
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.
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-STD1275D, Characteristics of 28 Volt DC Electrical Systems in
Military Vehicles, United States Department of Defense Interface Standard for a thorough description of requirements.
Now, lower the input voltage to 8V. The output remains
powered. In fact, the output remains powered to even
ASSEMBLY OPTIONS
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 damage 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.
DC2150A is available from Linear Technology as
DC2150A-C. This C version provides 4A to the load during 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 uninterrupted 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
Table 1. DC2150A Assembly Options
MAX LOAD
MAX LOAD DURING RIPPLE
100V/50ms SURGE
(FIVE REPEATS)
100V/500ms SURGE
DC2150A-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
STUFFING OPTION
dc2150af
2
DEMO MANUAL DC2150A
CIRCUIT OPERATION
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 dissipation 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 MILSTD-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 dissipated 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-STD1275D 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. MILSTD-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.
RLOAD = 10Ω
100V
250V SPIKE
VIN
28V 43V
20V/DIV
VIN
28V
50V/DIV
VOUT 27V
4.3A
20V/DIV
IOUT
2A/DIV 2.7A
RLOAD = 10Ω
VOUT 27V
50V/DIV
IOUT 2.7A
5A/DIV
100ms/DIV
1µs/DIV
Figure 1. MIL-STD-1275D 100V/500ms Surge Test
Figure 3. Positive Input Spike
IOUT 2.7A
5A/DIV
VOUT 27V
50V/DIV
28V
V
100V
IN
50V/DIV
VIN
28V
20V/DIV
27V
VOUT 27V
20V/DIV
IOUT
2A/DIV 2.7A
43V
−250V SPIKE
4.3A
RLOAD = 10Ω
RLOAD = 10Ω
500ms/DIV
1µs/DIV
Figure 2. MIL-STD-1275D 100V/50ms Surge
Repeated Five Times
Figure 4. Negative Input Spike
dc2150af
3
DEMO MANUAL DC2150A
CIRCUIT OPERATION
D4 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 Suppressor) 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 MILSTD-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 combination 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.
35V
VIN
5V/DIV
28V
21V
34V
VOUT
5V/DIV 27.15V
20.3V
IOUT
1A/DIV 2.715A
RLOAD = 10Ω
10ms/DIV
Figure 5. 14VP-P Input Ripple Condition
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.
dc2150af
4
DEMO MANUAL DC2150A
PCB LAYOUT
DC2150A 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
dc2150af
5
DEMO MANUAL DC2150A
PARTS LIST
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
30
1
R12
RES., CHIP, 649k, 1/4W, 1% 1206
VISHAY, CRCW1206649KFKEA
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
34
1
R20
RES., CHIP, 100k, 1/8W, 1% 0805
VISHAY, CRCW0805100KFKEA
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
dc2150af
6
DEMO MANUAL DC2150A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
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
4
1
C21
CAP., X7R, 0.22µF, 25V 10% 0805
KEMET, C0805C224K3RACTU
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
18
1
R25
RES., CHIP, 4.75k, 1/8W, 1% 0805
VISHAY, CRCW08054K75FKEA
19
1
R30
THERMISTOR, PTC, 470Ω , 0603
EPCOS, B59601A0105A062
20
0
R29, R31, R32
NOT USED
dc2150af
7
DEMO MANUAL DC2150A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2150A-B Required Circuit Components
1
1
DC2150A
DC2150A GENERAL BOM
2
0
C1-C12
NOT USED
3
1
C16
CAP., X7R, 0.022µF, 100V 10% 1206
KEMET, C1206C223K1RACTU
4
1
C21
CAP., X7R, 0.22µF, 25V 10% 0805
KEMET, C0805C224K3RACTU
5
0
C23, C24, C26
NOT USED
6
1
C27
CAP., X7R, 0.033µF, 16V 10% 0805
KEMET, C0805C333K4RACTU
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
14
0
Q3, Q4
NOT USED
15
1
R3
RES., CHIP, CURRENT SENSE, 0.020Ω, 1/2W, 1% 1206
16
0
R21, R22, R24, R29
NOT USED
17
1
R25
RES., CHIP, 4.75k, 1/8W, 1% 0805
VISHAY, CRCW08054K75FKEA
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
IRC, LRC-LRF-1206LF-01-R020F
dc2150af
8
DEMO MANUAL DC2150A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2150A-C Required Circuit Components
1
1
DC2150A
DC2150A GENERAL BOM
2
12
C1-C12
CAP., X7S, 22µF, 100V 20% 2220
TDK, CKG57NX7S2A226M500JH
3
1
C16
CAP., X7R, 0.015µF, 100V 10% 1206
KEMET, C1206C153K1RACTU
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
12
0
Q1, Q2
NOT USED
13
1
Q3
TRANS., MOSFET N-CH., 300V, TO-3P
IXYS, IXTQ88N30P
14
1
Q4
TRANS., MOSFET N-CH., 100V, TO-3P
IXYS, IXTQ170N10P
15
1
R3
RES., CHIP, CURRENT SENSE, 0.010Ω, 1/2W, 1% 1206
IRC, LRC-LRF-1206LF-01-R010F
16
1
R21
RES., CHIP, 5.6M, 1/8W, 5% 0805
PANASONIC, ERJ-6GEYJ565V
17
1
R22
RES., CHIP, 6.19k, 1/8W, 1% 0805
VISHAY, CRCW08056K19FKEA
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
dc2150af
9
DEMO MANUAL DC2150A
PARTS LIST
ITEM
QTY
REFERENCE
PART DESCRIPTION
MANUFACTURER/PART NUMBER
DC2150A-D Required Circuit Components
1
1
DC2150A
DC2150A GENERAL BOM
2
0
C1-C12, C24, C26
NOT USED
3
1
C16
CAP., X7R, 0.015µF, 100V 10% 1206
KEMET, C1206C153K1RACTU
4
1
C21
CAP., X7R, 2.2µF, 25V 10% 0805
TDK, CGA4J3X7R1E225K125AB
5
1
C23
CAP., X7R, 10µF, 16V 10% 0805
SAMSUNG, CL21B106KOQNNNE
6
1
C27
CAP., X7R, 0.033µF, 16V 10% 0805
KEMET, C0805C333K4RACTU
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
12
0
Q1, Q2
NOT USED
13
1
Q3
TRANS., MOSFET N-CH., 300V, TO-3P
IXYS, IXTQ88N30P
14
1
Q4
TRANS., MOSFET N-CH., 100V, TO-3P
IXYS, IXTQ170N10P
15
1
R3
RES., CHIP, CURRENT SENSE, 0.010Ω, 1/2W, 1% 1206
IRC, LRC-LRF-1206LF-01-R010F
16
1
R22
RES., CHIP, 6.19k, 1/8W, 1% 0805
VISHAY, CRCW08056K19FKEA
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
dc2150af
10
A
B
C
E10
GND
E7
GND
E6
INPUT
U1
3
Q1 *
N/A
4A
4A
-C
-D
5
N/A
2.8A
1A
2A






5X
MAX LOAD
DURING 100V/50ms 100V/500ms
SURGE
SURGE
RIPPLE
2A
IL
ASSEMBLY TYPES
SHDN
2
Q3*
R5
100
3
C14 0.1uF
C21 *
TP1
2
2
R1
100
1210
LTC4366HTS8-2
R4
237K
1206
DP2
OPT
1
-A
-B
STUFFING
OPTION
DP1
TVS
INPUT
1
2
INPUT
E9
1
2
2
1
HS1 *
1
1
VDD
TIMER
3
8
GATE
1
6
C16*
R16
18.2K
1210
R17
18.2K
1210
D3
BAT54
FB
R7
10K
1206
R36
10M
1206
(OPTION)
E5
C24*
2
3
SOURCE1
D5 *
R18
18.2K
1210
2
1
D7 *
C8 *
C7 *
C12 *
C9 *
C6 *
C3 *
2
1
Q6-2
1
2
3
1
MP2
MP3
MP4
Q5-2
2
R26
301K
D1*
D4*
T
HS2*
5
3
2
2
3
1
E2
R28
1K
Q5-1
R20
100K
TP3
R14
301K
C28
OPT
2220
D10 *
CUSTOMER NOTICE
R30*
0603
R24 *
1
1
2
3
R19
10K
R13
332K
C19
0.1uF
R10
1K 1210
8
R8 30.1
3
SHDN
OV
UV
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
2
3
1
U2
-
ECO
R22 *
DATE:
N/A
SIZE
16
12
13
4
3
FLT
+
04/25/2014
E3
GND
C18
68uF
E1
1
SHEET 1
DEMO CIRCUIT 2150A
2
OF 1
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
E11
E4
R35
2K
2010
OUTPUT
R34
2K
2010
NONE
C15
OPT
2220
GND
R23
OPT
E8
OUTPUT
D9
GREEN
R33
9.31K
1210
2
1
1K
DATE
04/25/2014
APPROVED
DAN EDDLEMAN
JP1
PRELOAD
1
MIL-STD-1275D
TECHNOLOGY
C23 *
R21 *
FLT
ENOUT
FB
R15
10K
R11
332K
PRODUCTION
DESCRIPTION
REVISION HISTORY
IC NO. LTC4366HTS8-2
TITLE: SCHEMATIC
TP4
R3 *
1206
2
REV
LT4363HS-2
C22
1.0uF
R6
10 OHM
APPROVALS
9
10
2
D2
BAS21W
2
Q4 *
C13 0.1uF
R2
100
1210
Q2 *
C17 0.047uF
HS3*
2
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. M.HAWKINS
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
DAN
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
EDDLEMAN
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
T
TP2
Q6-1
5
C26*
2
3
RIPCAP
D6 *
R27
301K
R29 AFFIXED TO HS3
R29 *
THRU-HOLE
R25 *
2. ALL RESISTORS ARE 0805 PACKAGE U.O.N.
STANDOFFS, 4 PLCS
4
C11 *
C5 *
C4 *
C10 *
C2 *
D8 *
C1 *
3
C27 *
1. FOR COMPONENTS DESIGNATED WITH *, REFER
TO BOM FOR APPROPRIATE PART NUMBER
FOR EACH ASSEMBLY TYPE.
NOTES:
MP1
C20
0.47uF
R12
649K
1206
R9
12.1K
C25
1.0uF
R32 *
R31 *
1210
3
1
HIGH VOLTAGE THIS SIDE
5
VSS
4
7
OUT
BASE
1
D
3
1
6
1
2
3
4
1
6
VCC
4
6
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1
2
SNS
2
3
3
4
4
15
GND
11
GATE
TIMER
1
OUT
NC
NC
NC
NC
3
5
14
7
2
1
5
A
B
C
D
DEMO MANUAL DC2150A
SCHEMATIC DIAGRAM
dc2150af
11
DEMO MANUAL DC2150A
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 application engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
dc2150af
12 Linear Technology Corporation
LT 0714 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014
Similar pages