Pulse Power Unit (PPU) for Pulsed Plasma Thrusters (PPT)
Tom Mattick – UW (Dawgstar)[206-543-6181, [email protected]]
6/25/02
PPU Operation.The pulsed-plasma thruster system operates by charging a ~1.3 µF mica capacitor to ~2.8 kV(energy ~ 5 J). The capacitor is connected across the electrodes of the PPT, with cathode incommon with the cathode a of spark plug mounted in proximity to the electrodes. A HV (~ 2kV) pulse applied to a spark plug initiates a discharge of the capacitor across the face of a teflonbar adjacent to the electrodes, generating thrust. Each PPT assembly has two pairs of electrodesand associated spark plugs, both sides using a common PPT capacitor. A thrust pulse can begenerated on either thruster (not both), depending on which spark plug is pulsed. The PPUfunction is to charge the PPT capacitor(s), and generate a spark on the desired thruster(s) inresponse to logic signals from the I/O board (5-volt logic). The system is powered by thesatellite bus voltage (15-28 V for VT, 24-32 V for UW). Low level auxiliary voltages needed bythe PPU are generated internally.
The PPU uses a flyback switch-mode power supply (SMPS) to simultaneously charge theselected PPT capacitor(s) and discharge initiation (DI) capacitors which provide the energy forthe spark plugs. The DI capacitors (0.68 uF) are internal to the PPU. The SMPS operates atnearly constant power during charging, and is designed to fully charge 2 PPT capacitors inslightly under 1 sec, to allow a firing rate of 1 Hz when two thrusters are fired at each shot(normal UW mode). Since power is nearly constant, it takes slightly less than 0.5 sec to charge asingle PPT capacitor. Logic signals to the PPU select which DI and PPT capacitors to chargeand initiate charging. The thrust discharge itself is initiated within the PPU – the PPU detectswhen the PPT capacitor voltages reaches 2.8 kV, and then fires the selected spark plugs (viaprior selection of DI capacitors charged). The charging process is indicated by the output signal"busy". This line is pulled low (V≤ 1Volt) during charging. The discharge occurs 1 msec afterthe busy line is released. This line is an optocoupled, open-collector transistor, and should havea user-provided 10 kΩ pull-up resistor to the digital positive bus voltage (5V for I/O boardlogic). The user should wait a period td≥ 2 msec following the lo-to-hi transition of the busysignal before initiating the next charge cycle.
Digital control is implemented by 3 lines: "F" (fire), "C" (clock), and "D" (data). They are activeHI, and are optically coupled within the PPU. A digital return line is also required. The timingsequence for input control signals is shown in Fig. 1, and the internal PPU timing for charge andfiring is shown in Fig. 2. The select/charge process is initiated by bringing F high. After a delaytF-C≥ 1 msec, the C and D lines should be clocked in to select which DI and PPT capacitors are tobe charged. The C (clock) line has a number of pulses equaling the number of thrusters (same asnumber of spark plugs) in the system (4 for VT, 8 for UW). The high and low durations of C(tCH and tCL) should be ≥ 20 µsec. Selection of a spark plug (and its associated PPT capacitor) ismade by the state of the D (data) line at the low-to-high transition of a given clock pulse. If D ishi at the leading edge of clock pulse "i", then a corresponding DI capacitor and its associated
PPT capacitor will be charged. The setup time for D (before lo-to-hi of C) should be tsu ≥ 10µsec, and the hold time for D (following lo-to-hi of C) should be thold ≥ 10 µsec. These(relatively long) setup and hold times are to accommodate variability of response times of theoptocouplers onboard the PPU.
Fig. 1 Logic signal timing for PPT selection. Shown for VT to select spark plug 2A.
Fig. 2 Discharge timing internal to PPU.
As provided, the assembled PPU/PPT has the spark-plug lines labeled 1A, 2A, ..., correspondingto thruster assembly 1, 2, ...; implicitly, the unlabelled plugs on each assembly are 1B, 2B, etc.(VT has only 1 and 2, i.e. 2 thruster assemblies). The association of clock (and data) pulses withspark plugs is shown in Tables 1 and 2 below. The order is "reverse" in the sense that, for VT,for example, the last (4th) clock/data pulse is associated with plug 1A, second-to-last (3rd)clock/data pulse is associated with plug 1B, etc. This choice was made to allow the samemethodology of plug selection for VT and UW systems. Important note: do not select twospark plugs on the same thruster (e.g., selection of 2A and 2B is forbidden!). One or two (ondifferent PPT units) plugs may be selected at each shot; if only one is selected the cycle time forthe shot will be ~ 0.5 sec, and if two plugs are selected, the cycle time will be ~ 1 sec.
Table 1: Selection of PPT discharge via D (data) line (for VT)
D line high atclock pulse:
Spark plugselected to fire
PPT capacitorto be charged
1 2B 22 2A 23 1B 14 1A 1
Table 2: Selection of PPT discharge via D (data) line (for UW)
D line high atclock pulse:
Spark plugselected to fire
PPT capacitorto be charged
1 4B 42 4A 43 3B 34 3A 35 2B 26 2A 27 1B 18 1A 1
Fig. 3 Timing for UW PPU to select plugs 1B and 3A
Following the last (4th for VT, 8th for UW) clock pulse, the F line is brought low to initiatecharging (F must remain high during clocking in of C and D pulses). The delay between theHI-to-LO transition of the last C pulse and the hi-to-lo transition of F must be tC-F ≥ 1 msec.This delay time allows the high-voltage selection switches (optocoupled triacs) to stabilize priorto charging. The busy line will go low at the HI-to-LO transition of F, and will remain low untilthe PPT capacitors are fully charged, as noted above. If some fault hangs up the chargingprocess, the PPU will fire the selected plugs at t ≈ 2 sec following the HI-to-LO transition of F(independent of capacitor voltage), in order to allow subsequent charge cycles.
The UW PPU has an option to double the capacitor charging rate, to allow firing thrustersapproximately twice as fast as the nominal firing rate. Using the fast-charge option should allowfiring a single PPT at about 4 Hz, and two PPT's at about 2 Hz. Because the power draw at thismaximum firing rate ( ~25W) cannot be sustained continuously by the power system, this optionis included to provide high thrust for only an orbit or two. Fast charge is implemented bybringing the D line HI at least 20 µsec prior to the HI-to-LO transition of F (after all data hasbeen clocked in), and keeping it HI until the BUSY output line goes HI (capacitors fullycharged). For normal charge rate, the D line should remain LO except when clocking in data.Fast-charge is not implemented on the VT PPU, and the D line should always be LO duringcharging.
The efficiency of the SMPS is ~ 80%, so the input power during charging will be ~ 6.25W perPPU capacitor selected. Firing 2 PPT's per shot at 1 Hz would draw an average power of~12.5W. For the nominal UW bus voltage of 28V, the current draw would be ~ .225 A/capacitorduring charging (~.45A to charge two caps). When inactive, the PPU draws ~ 10 mA.
Temperature Sensors.The PPU/PPT assemblies are fitted with thermistor temperature sensors (negative temperaturecoefficient) for the SMPS transformer and each PPT capacitor (3 thermistors for VT, 5 for UW).The thermistors have a 10 kΩ nominal resistance at 25°C, and are biased (internally to the PPU)as shown in Fig. 4. Resistance and output voltage vs temperature are shown in Fig. 5. Foridentification purposes (PPU pin assignments given later), the thermistors will be called RT
(transformer), R1 (PPT capacitor 1), R2 (PPT capacitor 2), etc. The voltages on the thermistoroutput lines should be checked periodically to insure the transformer and PPT capacitors do notget too hot. The PPT's should not be fired if the transformer temperature exceeds TT,max=120°C,or if the PPT capacitor temperature is out of the range -40°C ≤ TC ≤ 125°C.
Fig. 4. Thermistor biasing. [Measurement of transformer and capacitor temperatures.]
Fig. 5 Thermistor resistance and output voltage vs temperature.
The PPU has a 15-pin input connector for power, logic, and thermistor signals. Externalconnectors are prewired, and provided with the unit. The 4 power lines (2 @ BUS+, 2@ BUS-)are joined with a 4-pin inline (2-piece) connector whose leads are connected to the relay board(PPU must disabled from firing until satellite sufficiently far from shuttle). The remaining 11lines are joined with an 11-pin inline (2-piece) connector whose leads are connected to the I/Oboard. When assembling the inline connectors together, make sure the white dots are on thesame side (both dots visible), since the connectors are not polarized. With this convention forthe dots, the color coding of the wires is shown in Fig. 6.
Cautions/notes:
• Make sure the input signals (logic), output signals (busy and thermistors) and power areconnected to the proper PPU input lines.The PPU can be destroyed if incorrectly connected.
• Do not fire the PPT's in air. This can destroy the PPT capacitors.Note that for air testing, the PPT capacitors were removed from the PPT assembly, anddischarged resistively after full charge with peak discharge current < 1 Amp. The sparkplugs can be fired in air.
• The busy line and thermistor output signals should be bypassed with ~0.1 µF capacitors toanalog ground near the I/O board end. These are relatively high impedance outputs, and the~20 kHz noise of the SMPS and the spark-plug discharge will otherwise result in significantnoise on these lines. [The power lines are filtered, and digital control lines are opto-isolated,so little noise should appear on these.]
• Never select both spark plugs on a single PPT assembly for discharge.
Fig. 6 Input Connections for PPU Unit
PPU Circuitry.The PPU uses three circuit boards:
Filter Board: I/O, timing, SMPS input filter
SMPS Board: HV SMPS supply, HV switching circuitry
DI Board: High current, high-voltage switching of DI plugs.4 DI switches per board.VT uses 1 DI board; UW uses 2 DI boards.
To avoid the weight and volume of high-voltage, high-current connectors, all wiring to PPT's issoldered directly onto PPU boards. A shielded wire bundle is routed to each PPT unit, including2 DI coax lines, the positive charging lead for the PPT capacitor (white HV wire), and a wire pairfor the thermistor. The negative return for the PPT capacitor is the shield of the DI coax lines,since the shells of the DI plugs are in common with the cathode of the PPT (capacitor negative).
A functional diagram of the PPU is shown below. Schematics and parts lists for the boards aregiven on the following pages.
INOUT
GNDC44
0.1uF C4515uF
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
T1
T5
T4
T3
T2
Pin 8
Pin 9B -
B -
Q34LM2936Z - 5.0
5V
+
R10110K (SIP)
R1021K (SIP)
+ -
TO THERMISTORS
Pin 2
Pin 1
B+
B+
* R983.6 K
R923K
P30 H11A817D
R955.1K
12 12
* R993.6 K
R933K
P31 H11A817D
R965.1K
12 12
* R1003.6 K
R943K
R975.1K
12 12
Pin 5
Pin 6
Pin 4 P32 H11A817D
P33 H11A817DPin 3
CLK
/BUSY
DATA
FIRE
D
C
B -
F
B +
B
TO SMPS BOARD
TO SMPS BOARD
PROPULSION POWER UNITFILTER BOARD -- PAGE 1/2
UNIVERSITY OF WASHINGTON NANOSATELLITEDESIGNED BY DR. A. THOMAS MATTICKGRAPHIC BY HIEU LE AUGUST 20, 2001
UPDATED 5/10/02 (A.T.M.)
1 4
32
3
4
2
1
2
1
3
4
4
32
1
Q312N3906
Q332N3906
Q322N3906
K1(CONNECTOR)
DIG GND
Pin 10
To Page 2
To Page 2
To Page 2
To Page 2
TID100uH
C410.1uF
C4222uF50V
C4322uF50V
C6010uF 50V
12
Q302N4401
D501N4148
D401N5242
12V
T
/T
/RR/C
Q
/Q
VSS
3
86
5
4
7
1
2
GND
R1042M
12
R11110K
R1032M
C461uF
C480.1uF
12 12
T
/T
VCC
/R
R/C
/Q
Q
GND
14
13911
12 10
16
15
+
+
C501nF
/T
T
/RR/C
Q
/Q
GND
14
151012
11 9
13C521nF
R10810K
12 12
/T
T
/RR/C
/Q
Q
VSS
3
87
4
5
6
1
2
GND
VCC
16C5110nF
R107100K
C490.1uF
12 12
R1061K
R105100K
12
R11020K
R1162K
R1152K
FB
/RF
B +
B -
B
12V
G
28V
PROPULSION POWER UNITFILTER BOARD -- PAGE 2/2
UNIVERSITY OF WASHINGTON NANOSATELLITEDESIGNED BY DR. A. THOMAS MATTICKGRAPHIC BY HIEU LE AUGUST 20, 2001
UPDATED 5/10/02 (A.T.M.)
TO SMPS BOARD
(To DI Board 1)
C400.022uF
++
+
TO SMPS BOARD
TO SMPS BOARD
TO SMPS BOARD
TO SMPS BOARD
D511N52981.1mA
D411N4148
E
TO SMPS BOARD
Q35CD4538
Q36CD4538
L1050uH
L1150uH
Q37ZVN3310A
Q38ZVN4424A
R91390
FIRE 2
FIRE 1
GND 1
GND 2
(To DI Board 2)
From Page 1
From Page 1
From Page 1
C471uF
+ +
From Page 1
PPU - Filter Board Components - page 1 of 2
Tom Mattick 3/27/02
Part number Mfg Package Vendor Pkg SlipSemiconductorsD40 12V Zener diode 1N5242B Diodes,Inc DO-35 Digikey DK01-5D41 Signal diode 1N4148 Diodes,Inc DO-35 Digikey DK01-1D42 100V, 1A Rectifier 1N4002 Diodes,Inc DO-41 Digikey DK01-1Q30 NPN Transistor 2N4401 Fairchild TO-92 Digikey DK01-1Q31-33 PNP Transistor 2N3906 ON Semi TO-92 Newark NE01-3Q34 5V Regulator LM2936Z-5.0 NSC TO-92 Digikey DK01-6Q35-36 Dual Multivibrator CD4538BCN Fairchild 16-DIP E-Chips EC01-1Q37 N-Ch Mosfet ZVN3310A Zetex TO-92 Digikey DK01-6Q38 N-Ch Mosfet ZVN4424A Zetex TO-92 Digikey DK01-6P30-32 Optoisolator H11A817D Fairchild 4-DIP Digikey DK01-6
InductorsL10,L11 50uH, 3.3A, 0.04Ω Ind. 73120 Pico Surf mnt Pico PE01-1T10 100uH,3A,0.013Ω CMF 47560 Pico Surf mnt Pico PE01-1
CapacitorsC40 0.047uF,100V,X7R K473K20X7RH5TL2 BC Components axial Digikey DK01-6C41,C44,C48-49 0.1uF,100V,X7R K104K20X7RH5TL2 BC Components axial Digikey DK01-6C42,C43 22uF,50V,tantalum T322F226K050 Kemet axial Mouser ME01-4C45 15uF,16V,tantalum T350E156K016 Kemet radial Mouser ME01-4C46,C47 1uF,35V,tantalum T350A105K035 Kemet radial Mouser ME01-4C50,C52 1nF,100V,X7R K102K15X7RH5TL2 BC Components axial Digikey DK01-6C51 10nF,100V,X7R K103K15X7RH5TL2 BC Components axial Digikey DK01-5C60 10uF,50V,tantalum TAP106M050CRW AVX radial All Amer. Semi AS01-1
PPU - Filter Board Components - page 2 of 2
Part number Mfg Package Vendor Pkg SlipResistorsR90 12K,1/4W,1%,mf 271-12K Xicon axial Mouser ME01-4R91 390Ω,2W,1%,mf 5083NW390R0J12AFX BC Components axial Digikey DK01-8R92-94 3K,1/8W,5%,cf CFR-12JB-3K0 Yageo axial Digikey DK01-6R95-97 4.99K,1/8W,1%,mf 270-4.99K Xicon axial Mouser ME01-2R98-100 3.6K,1/8W,5%,cf CFR-12JB-3K6 Yageo axial Digikey DK01-6R101 10K 5-resistor network 773061103 CTS 6-pin SIP Digikey DK01-6R108,R111 10K,1/8W,1%,mf 270-10K Xicon axial Mouser ME01-1R102 1K 5-resistor network 773061102 CTS 6-pin SIP Digikey DK01-6R106 1K,1/8W,5%,cf CFM-12JB-1K0 Yageo axial Digikey DK01-6R103,R104 2M,1/8W,5%,cf CFM-12JB-2M0 Yageo axial Digikey DK01-6R105,R107 100K,1/8W,1%,mf 270-100K Xicon axial Mouser ME01-2R110 20K,1/8W,1%,mf 270-20k Xicon axial Mouser ME01-2R115,R116 2K,1/8W,5%,cf CFM-12JB-2K0 Yageo axial Digikey DK01-6
OtherK1 15-pin connector ML-263-015-435-22OS Airborn AirbornCircuit Board Polyimide, 4.9"x1.9"x0.064" Prototron Prototron PR01-3
C5
470p
F
R19
10K
R20
909K
R21
10K
+
R23
100K
R14
160K
C10
0.1u
F+
Q14
TLC
393I
P+ -
Q11
ZV
N33
10A
Q12ZVP3310AF
B
VC
CC
S
OU
T
5V
RE
FO
SC
VS
S
C6
1nF
R12
499o
hm
R13
15oh
m
T2
+
Q10
UC
C28
00N
D8
1N41
48
Q13
IRF
S31
N20
D9
P6K
E18
0A18
0V
T1
R17 1K
R24
100M
R22
200K
C9
0.04
7uF
28
D14
1N52
367.
5V
D1
UF
100
7
R18 2K
R1
2K
C1
39uF
C3
0.1u
F
C4
1nF
HV
VD
I
C7
560p F C8
560p
F
PR
OP
ULS
ION
PO
WE
R U
NIT
SM
PS
BO
AR
D -
- P
AG
E 1
/2U
NIV
ER
SIT
Y O
F W
AS
HIN
GT
ON
NA
NO
SA
TE
LLIT
ED
ES
IGN
ED
BY
DR
. A. T
HO
MA
S M
AT
TIC
KG
RA
PH
IC B
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LE
AU
GU
ST
20, 2
001
UP
DA
TE
D 5
/10/
02 (
A.T
.M.)
FB ECD12V
GN
D
28V
S1B
S2B
S2A
S1A
FROM FILTER BOARD TO DI BOARD 1
+28
/R
FR
OM
FIL
TER
BO
AR
D
R5
100KR2
100K R3
100K R4
100K
R9
100KR6
100K R7
100K R8
100K
S3B S
4B
S4A
S3A
DA
TA
OU
TP
UT
EN
AB
LE
ST
RO
BE
CLO
CK
Q1
Q5
Q6
Q7
Q8
Q4Q3
Q2
VS
S
Q1
CD
4094
BN
TO DI BOARD 2
C2
0.1u
F
+
VC
C
D6
UF
1007
D5
UF
1007
D4
UF
1007
D3
UF
100
7
D2
UF
100
7
R16 2K
D7
UF
1007
Q2
ZV
N44
24A
Q6
ZV
N44
24A
Q7
ZV
N44
24A
Q8
ZV
N44
24A
Q9
ZV
N44
24A
Q5
ZV
N44
24A
Q4
ZV
N44
24A
Q3
ZV
N44
24A
R11
30oh
mR
1049
9ohm
R15
150K
To
Pag
e 2
HV
GN
D
(To DI Boards)
PROPULSION POWER UNITSMPS BOARD -- PAGE 2/2
UNIVERSITY OF WASHINGTON NANOSATELLITEDESIGNED BY DR. A. THOMAS MATTICKGRAPHIC BY HIEU LE AUGUST 20, 2001
UPDATED 5/10/02 (A.T.M.)
HV 28V
D10
GP
02-4
0
P5
MO
C30
83
16 4
2
P4
MO
C30
83
16 4
2
R25
100M
5kV
R36
22M
1.6k
V
R37
22M
1.6k
V
R29
2.7K
2W
S1
CA
P1
1.3u
F M
ICA
P1
MO
C30
83
16 4
2
R33
22M
1.6k
V
P2
MO
C30
83
16 4
2
R34
22M
1.6k
V
P3
MO
C30
83
16 4
2
R35
22M
1.6k
V
D11
GP
02-4
0
P10
MO
C30
83
16 4
2
P9
MO
C30
83
16 4
2
R26
100M
5kV
R41
22M
1.6k
V
R42
22M
1.6k
V
R30
2.7K
2W
S2
CA
P2
1.3u
F M
ICA
P6
MO
C30
83
16 4
2
R38
22M
1.6k
V
P2
MO
C30
83
16 4
2
R39
22M
1.6k
V
P8
MO
C30
83
16 4
2
R40
22M
1.6k
V
TO D
I BO
AR
D 1
D11
2G
P02
-40
P15
MO
C30
83
16 4
2
P14
MO
C30
83
16 4
2
R27
100M
5kV
R46
22M
1.6k
V
R47
22M
1.6k
V
R31
2.7K
2W
S3
CA
P3
1.3u
F M
ICA
P11
MO
C30
83
16 4
2
R43
22M
1.6k
V
P12
MO
C30
83
16 4
2
R44
22M
1.6k
V
P13
MO
C30
83
16 4
2
R45
22M
1.6k
V
D13
GP
02-4
0
P20
MO
C30
83
16 4
2
P19
MO
C30
83
16 4
2
R28
100M
5kV
R51
22M
1.6k
V
R52
22M
1.6k
V
R32
2.7K
2W
S4
CA
P4
1.3u
F M
ICA
P16
MO
C30
83
16 4
2
R48
22M
1.6k
V
P17
MO
C30
83
16 4
2
R49
22M
1.6k
V
P18
MO
C30
83
16 4
2
R50
22M
1.6k
V
HV
GN
D
From Page 1
TO D
I BO
AR
D 1
TO D
I BO
AR
D 2
TO D
I BO
AR
D 2
From Page 1
PPU - SMPS Board Components - page 1 of 2
Tom Mattick 3/27/02
Mfg. part # Mfg. Package Vendor Packing ListSemiconductorsD1-7 1kV,1A,Ultrafast Rectifier UF1007 Diodes,Inc DO-41 Digikey DK01-4D8 Signal diode 1N4148 Diodes,Inc DO-35 Digikey DK01-1D9 170V TVS diode P6KE170A MicroSemi DO-204 Digikey DK01-4D10-13 4kV,1A,rectifier GP02-40 Gen Semi DO-41 All Am Semi AS01-1D14 7.5V Zener diode 1N5236B Diodes,Inc DO-35 Digikey DK01-6Q1 CMOS Ser-to-parallel CD4094BCN Fairchild 16-DIP Echips EC01-1Q2-9 N-Ch Mosfet ZVN4424A Zetex TO-92 Digikey DK01-6Q10 PWM UCC2800N TI 8-DIP Arrow AR01-2Q11 N-Ch Mosfet ZVN3310A Zetex TO-92 Digikey DK01-6Q12 P-Ch Mosfet ZVP3310A Zetex TO-92 Digikey DK01-6Q13 200V,31A,N-Ch Mosfet IRFS31N20D IRF D2PAK Newark NE01-2Q14 Comparator TLC393IP TI 8-DIP Arrow AR01-2P1-20 800V opto-triac MOC-3083 Fairchild 6-DIP Digikey DK01-6
TransformersT1 E-core E30/15/7 Philips Allstar Magn AM01-1
Bobbin CSH-E20/7-1S-10P Philips Allstar Magn AM01-1Clip CLA-E20/15/7 Philips Allstar Magn AM01-120AWG H Magnet wire 20HAPT Wiretronics Wiretronics WT00-132AWG H Magnet wire 32HAPT Wiretronics Wiretronics WT00-1Interwinding tape 1N012 Lodestone Lodestone LP01-1
T2 Cur. Sense xfmr,1:100 PE68280 Pulse Engg. Surf mnt Arrow AR00-1
PPU - SMPS Board Components - page 2 of 2
Mfg. part # Mfg. Package Vendor Packing ListResistorsR1,R16,R18 2k,2W,5%,mf 5083NW2K000J12AFX BC Components axial Digikey DK01-6R2-9,R23 100k,1/8W,1%,mf 270-100K Xicon axial Mouser ME01-2R10,R12 499Ω,1/8W,1%,mf 270-499 Xicon axial Mouser ME01-1R11 30Ω,1/8W,1%,mf 270-30R0 Xicon axial Mouser ME01-4R13 15Ω,1/8W,5%,cf CFR-12JB-15R Yageo axial Digikey DK01-6R14,R15 150k,1/8W,1%,mf 270-150K Xicon axial Mouser ME01-1R17 1k,2W,5%,mf 5083NW1K000J12AFX BC Components axial Digikey DK01-6R19,R21 10k,1/8W,1%,mf 270-10K Xicon axial Mouser ME01-1R20 909k,1/8W,1%,mf 270-909K Xicon axial Mouser ME01-1R22 178k,1/8W,1%,mf 270-178K Xicon axial Mouser ME01-4R24-28 100M,1W,5kV MOX750F-100M Ohmite axial Digikey DK01-4R29-32 3k,2W,5%,mf 5083NW3K000J12AFX BC Components axial Digikey DK01-6R33-52 22M,1/4W,1.5kV 5043DM22M00J BC Components axial Allied AL00-1
CapacitorsC1 39uF,50V,ceramic 87106-D39 JDI 20-DIP [Provided by Genl Dynamics]C2-3,C9 0.1uF,100V,X7R K104K20X7RH5TL2 BC Components axial Digikey DK01-6C5 470pF,100V,5%,COG K471J15COGH5TL2 BC Components axial Digikey DK01-6C4,C6 1nF,100V,X7R K102K15X7RH5TL2 BC Components axial Digikey DK01-6C7-8 560pf,6kV,ceramic 140-CD602P9-561K Xicon radial Mouser ME01-4
OtherCircuit Board Polyimide, 6"x4"x0.064" Prototron Prototron PR01-2
C2210nF
R7320K
T41:2.24
D301N4148
D311N4148
L115uH
D261N5250
20VC30
4.7nF
Q22IRG4PH50UD
R8122M
C26.68uF
P21 MOC3083
1 6
42
R6522M
R6622M
1 6
42
C2310nF
R7420K
T51:2.24
D321N4148
D331N4148
L215uH
D271N5250
20VC31
4.7nF
Q23IRG4PH50UD
R8222M
C27.68uF
P23 MOC3083
1 6
42
R6722M
R6822M
1 6
42
P24 MOC3083P22 MOC3083
C201uF
R625K
R635K
C2110nF
D201N5242 (12V)
FireQ20
2N3906
R641K
Q21IRFD120
R773.3
R783.3
S1A S1
D22R2000F
D23R2000F
VDI S1BHV GND
COAX TOD1A
COAX TOD1B
VDI
HV GND
( To Page 2)
Fire HI
Fire LO
( To Page 2)
R60100K
GND
+28V
Fro
m F
ilter
Boa
rdFrom SMPS Board
PROPULSION POWER UNITDI BOARD - Page 1/2
UNIVERSITY OF WASHINGTON NANOSATA.T. MATTICK 5/10/02
C2410nF
R7520K
T61:2.24
D341N4148
D351N4148
L315uH
D281N5250
20VC32
4.7nF
Q24IRG4PH50UD
R8322M
C28.68uF
P25 MOC3083
1 6
42
R6922M
R7022M
1 6
42
C2510nF
R7620K
T71:2.24
D361N4148
D371N4148
L415uH
D291N5250
20VC33
4.7nF
Q25IRG4PH50UD
R8422M
C29.68uF
P27 MOC3083
1 6
42
R7122M
R7222M
1 6
42
P28 MOC3083P26 MOC3083
R793.3
R803.3
S2A S2
D24R2000F
D25R2000F
S2B
COAX TOD2A
COAX TOD2B
VDI
HV GND
( From Page 1)
From SMPS Board
Fire HI
Fire LO
( From Page 1)
PROPULSION POWER UNITDI BOARD - Page 2/2
UNIVERSITY OF WASHINGTON NANOSATA.T. MATTICK 5/10/02
PPU - DI Board Components - page 1 of 2
Tom Mattick 3/27/02
Mfg. Part # Mfg. Package Vendor Packing ListSemiconductorsD20 12V Zener diode 1N5242B Diodes,Inc DO-35 Digikey DK01-5D22-D25 2kV rectifier diode R2000F Rectron DO-41 Mouser ME01-3D26-D29 20V zener diode 1N5250B Gen. Semi. DO-35 Mouser ME01-3D30-D37 Signal diode 1N4148 Diodes,Inc DO-35 Digikey DK01-1Q20 PNP Transistor 2N3906 ON Semi TO-92 Newark NE01-3Q21 N-Ch Mosfet IRFD120 IRF 4-DIP Digikey DK01-5Q22-Q25 1.2 kV IGBT IRG4PH50UD IRF TO-247 Allied AL00-2P21-P28 800-V opto-SCR MOC3083 Fairchild 6-DIP Digikey DK01-6
InductorsT4-T7 1:2.24, 4kV gate xfmr 78253-35V CD Tech 6-DIP Mouser ME01-3L1-L4 15uH Iron-core Ind. 434-10-150M Xicon/Fastron axial Mouser ME01-3
ResistorsR60 100k,1/8W,1%,mf 270-100K Xicon axial Mouser ME01-2R61-63 4.99k,1/8W,1%,mf 270-4.99K Xicon axial Mouser ME01-2R64 1k,1/8W,1%,mf 270-1K Xicon axial Mouser ME01-1R65-72,R81-84 22M,1/4W,1.5kV 5043DM22M00J BC Components axial Allied AL00-1R73-76 20K,1/8W,1%,mf 270-20k Xicon axial Mouser ME01-2R77-80 3.3Ω,1/8W,5%,cf CFR-12JB-3R3 Yageo axial Digikey DK01-5
PPU - DI Board Components - page 2 of 2
Mfg. Part # Mfg. Package Vendor Packing ListCapacitorsC20 1uF,50V,mf ECQ-V1H105JL Panasonic radial Digikey DK01-5C21 10nF,100V,X7R K103K15X7RH5TL2 BC Components axial Digikey DK01-5C22-25 10nf, 3kV,ceramic 30GASS10 Ceramite radial Allied AL01-2C26-29 0.68uF, 1kV, X7R SV08AC684K AVX radial Kent KE01-1C30-C33 4.7nF,100V,X7R K472K20X7RH5TL2 BC Components axial Digikey DK01-5
OtherCircuit Board Polyimide, 6"x4"x0.064" Prototron Prototron PR01-1