namefields ipdr – subject solar probe plus fields instrument pdr antenna electronics box selda s....
DESCRIPTION
NameFIELDS iPDR – Subject AEB Requirements –AEB shall provide ± 15V Floating Voltage to V1, V2, V3, V4 and V5 preamps (heritage RBSP) Input is +5V Analog Efficient >60% Synchronized to 300KHz Isolated secondary voltages 5% output regulation –AEB shall regulate Preamp ±6 V from LNPS to ±5V –AEB shall provide the power and the control signal for the latching relay controls on the preamps (On V5 heater resistors) 3 bias impedances. –AEB shall be a nexus for MF and HF signals from preamp. The signals shall not have any traces on the board. The signals shall arrive on a DB connector and via coax cables (RG316). The signals shall be then connected to TDS, RFS and DFB (also DB connectors). –AEB shall provide housekeeping signals to DCB via multiplexer. 3TRANSCRIPT
Name 1FIELDS iPDR – Subject
Solar Probe Plus FIELDSInstrument PDR
Antenna Electronics Box
Selda S. HeavnerU.C. Berkeley
Name 2FIELDS iPDR – Subject
Agenda
• Requirements & Specifications• Block Diagrams• Schematics• Layout• Mass and Power• Parts • Schedule• Issues
Name 3FIELDS iPDR – Subject
AEB Requirements
• AEB Requirements– AEB shall provide ± 15V Floating Voltage to V1, V2, V3, V4 and
V5 preamps (heritage RBSP)• Input is +5V Analog• Efficient >60%• Synchronized to 300KHz• Isolated secondary voltages• 5% output regulation
– AEB shall regulate Preamp ±6 V from LNPS to ±5V – AEB shall provide the power and the control signal for the
latching relay controls on the preamps (On V5 heater resistors) 3 bias impedances.
– AEB shall be a nexus for MF and HF signals from preamp. The signals shall not have any traces on the board. The signals shall arrive on a DB connector and via coax cables (RG316). The signals shall be then connected to TDS, RFS and DFB (also DB connectors).
– AEB shall provide housekeeping signals to DCB via multiplexer.
Name 4FIELDS iPDR – Subject
AEB Requirements
AEB Specifications Cont. (heritage: THEMIS, RBSP)• Receive Preamplifier Signals
– DC Voltage Level : ± 100V w.r.t chassis– Dynamic Range : DC – 1KHz
• Floating Ground Driver (heritage: THEMIS, RBSP)– AEB provides the reference source for each floating
ground used by the Preamps– Input : PAn_LFOUT (preamp signal)– Input Filter: 300KHz– Output Voltage Level: ± 60VDC with respect to AGND– Output : References floating ground supply (± 10VDC)
Name 5FIELDS iPDR – Subject
AEB Requirements
• BIASING VOLTAGES (V1-V4)AEB shall provide programmable biasing voltages to the V1-V4 preamps as follows:• BIAS (whip): ± 40 w.r.t preamp output• HEATSHIELD: ± 40 w.r.t preamp output• STUB: ± 40 w.r.t preamp output
• BIASING VOLTAGES (V5)AEB shall provide a provide a programmable
biasing voltage to the V5 preamp as follows:• BIAS (sensor): ± 40 w.r.t preamp output
Name 6FIELDS iPDR – Subject
AEB1 BLOCK DIAGRAM
LNPS 1
Preamp1 (PA1)
Preamp2 (PA2)
Preamp5 (PA5)
DCB
AEB±100V
AEB+12V
+3.3V Digital
PA±6V
300KHz SYNC
5V REGULATOR
+5V Analog
DAC CONTROL
MUXAEBHKSEL[3:0]
AEB1 AHKP
5VREF AD584 CHANNELS
AEBDAC_DATAEBDAC_CLK
AEBADR[3:0]
Decoder ENABLE
Latching Relay Controls
BIAS DACSTUB DACHEATSHIELD DAC
DAC HSK
HTR RES RELAY
BIAS RES RELAYS
BIAS RES RELAYS
FGND DRV
±15V FLOATER
±15VF
FGND DRV
FGND DRV
FGND DRV
FGND DRV
FGND DRV
±15VF
±15VF
±15VF
AEB-12V
Name 7FIELDS iPDR – Subject
AEB 2 BLOCK DIAGRAM
LNPS 2
Preamp3 (PA3)
Preamp4 (PA4)
TDS
AEB±100V
AEB+12V
+3.3V Digital
PA±6V
300KHz SYNC
5V REGULATOR
+5V Analog
DAC CONTROL
MUXAEBHKSEL[3:0]
AEB2 AHKP
5VREF AD584 CHANNELS
AEBDAC_DATAEBDAC_CLK
AEBADR[3:0]
Decoder ENABLE
Latching Relay Controls
BIAS DACSTUB DACHEATSHIELD DAC
DAC HSK
BIAS RES RELAYS
BIAS RES RELAYS
FGND DRV
±15V FLOATER
±15VF
FGND DRV
FGND DRV
FGND DRV
FGND DRV
±15VF
±15VF
AEB-12V
Name 8FIELDS iPDR – Subject
AEB 1 Coax DIAGRAM
LNPS 1 TDS
AEB 1 Preamp1 (PA1)
Preamp2 (PA2)
Preamp5 (PA5)
RFSDCB
DFB
LFHFMF
LF
MFHF
LF
LF
J32 J31J37 J36
J34
J38
J33
Name 9FIELDS iPDR – Subject
AEB 2 Coax Diagram
LNPS 2 TDS
AEB 2 Preamp3 (PA3)
Preamp4 (PA4)
RFSTDS
DFB
LF
HFMF
LF
MF
HF
J52 J51J57 J56
J54
J58
J53
Name 10FIELDS iPDR – Subject
AEB 1 POWER BLOCK DIAGRAM
148µAx3
148µAx3
-12V
+12V(2.4-3.5mA)x3
+6V-6V
PREAMPHF OPAMP
V1+V2
+100V
-100V
AD648, AD584
AD648
+3.3VDDAC CONTROL
BIAS
STUB
HEATSHIELD
829µA
(2.4-3.5mA)x3
5.7mA
5.7mA
(25mA 10ms)x2Latching relays (AEB ICD)
Reg to 5V
Reg to 5V
100ms
LNPS 1
Name 11FIELDS iPDR – Subject
AEB 1 POWER FLOATING SUPPLY
FV1_P15VA
FV1_N15VA
FV1_GND
FV2_P15VA
FV2_N15VA
FV2_GND
FV5_P15VA
FV5_N15VA
4.5-6mA
V1-V2
V5
4.5-6mA
4.5-6mA
4mA
4mA
SYNC 300KHz
SYNC 300KHz
4.5-6mA
FLOATING GND DRIVER
and PREAMP
FLOATING GND DRIVER
and PREAMP
FLOATING GND DRIVER
and PREAMP
FV5_GND
+5VA
IMON
IMON
80mA
68% efficiency
40mA
HSK MUX
From DCB
From DCB
LNPS 1
Name 12FIELDS iPDR – Subject
AEB 2 POWER BLOCK DIAGRAM
148µAx2
148µAx2
-12V
+12V(2.4-3.5mA)x2
+6V-6V
PREAMPHF OPAMP
V3+V4
+100V
-100V
AD648, AD584
AD648
+3.3VDDAC CONTROL
829µA
(2.4-3.5mA)x2
5.7mA
5.7mA
(25mA 10ms)x2 Latching Relays (AEB ICD)
Reg to 5V
Reg to 5V
BIAS
STUB
HEATSHIELD
LNPS 2
100ms
Name 13FIELDS iPDR – Subject
AEB 2 POWER FLOATING SUPPLY
FV1_P15VA
FV1_N15VA
FV1_GND
FV2_P15VA
FV2_N15VA
FV2_GND
4.5-6mA
V3-V4
4.5-6mA
4.5-6mASYNC 300KHz
4.5-6mA
FLOATING GND DRIVER
and PREAMP
FLOATING GND DRIVER
and PREAMP
IMON80mA
68% efficiency
HSK MUX
+5VA
From TDS
LNPS 2
Name 14FIELDS iPDR – Subject
AEB FLOATING POWER
• AEB Breadboard Power Results– The supply is 68% when powered by 3.3V Digital at
nominal load– The supply efficiency is expected to rise since MAX256 will
be connected to 5V Analog from LNPS. – MAX 256 3W H-bridge driver
• Has an internal oscillator so if SYNC signal is lost from DCB it will still run
• Short circuit protection• Thermal shutdown• Used on RBSP, submitted to APL Jan 2013 for approval Voltage (V) Load Current (mA) Power (W)
FV1 P15V 14.095 4.15 0.05849425
FV1 N15V 14.091 4.51 0.06355041
FV2 P15V 14.59 5.26 0.0767434
FV2 N15V 14.58 5.33 0.0777114
VIN 3.3V 124.8 0.411
Name 15FIELDS iPDR – Subject
15VF POWER SCHEMATIC
F V 2 -1 5
5 V _ F L O A TE R _ X
T5 _ P in 5
F V 1 _ P 1 5 V A
L 4 _ P in 2
C 1 4 20 . 1 u F , 1 0 0 V
F V 2 G N D
F B 2
D G N D
D 1 21 N 4 1 1 1 -1 , 1 7 V
F V 2 +1 5
+ C 1 3 74 .7 u F , 2 5 V
D G N D
FV2GND
F V 1 G N D
F V 1 _ G N D
D 1 91 N 6 7 6 1
T2
A E B 0 0 5
1
2 3
5
4
F V 1 +1 5
FV2GND
D 1 41 N 6 7 6 1
F V 2 _ G N D
F V 1 _ P 1 5 V A
L 2A E B 0 0 8
1 4
2 3D 1 1
1 N 6 7 6 1
C 1 4 30 . 1 u F , 1 0 0 V
C 1 4 00 .1 u F , 1 0 0 V
F V 2 _ N 1 5 V A
D 2 11 N 4 1 1 1 -1 , 1 7 V
+C 1 4 14 . 7 u F , 5 0 V
D G N D
C 1 4 70 .1 u F , 1 0 0 V
+C 1 4 54 . 7 u F , 5 0 V
FV1GND
T 5 _ P i n 3
L 3A E B 0 0 8
1 4
2 3
D 1 81 N 5 7 1 1 -1
C 1 4 80 . 1 u F , 1 0 0 V
L 3 _ P i n 2
C 1 5 00 .1 u F , 1 0 0 V
D G N D
L 3 _ P i n 1
L 4 _ P in 1F V 2 _ P 1 5 V A
D 1 0 1 N 6 7 6 1
+C 1 4 9
4 . 7 u F , 5 0 V
F V 2 G N D
F V 2 G N D
F V 1 _ N 1 5 V A
R 2 3 81 0 . 0 K
C 1 4 6
0 .1 u F , 1 0 0 VT 6 _ P i n 3
F V 2 G N D
+C 1 3 94 . 7 u F , 5 0 V
C 1 3 80 . 0 1 u F , 1 0 0 V
F V 2 _ P 1 5 V A
C 1 4 4
0 .1 u F , 1 0 0 VU 2 7
M AX 2 5 6
26
1
48
5
379
+5V
GN
D
C K _ R S
M O D ES T1
S T2
+5V
GN
D
GN
DA
D G N D
X-FLTR
D 1 71 N 4 1 1 1 -1 , 1 7 V
D 2 0 1 N 6 7 6 1
D 1 5 1 N 6 7 6 1
F V 1 G N D
D G N D
T6 _ P in 5
D 91 N 4 1 1 1 -1 , 1 7 V
F V 1 -1 5
D 1 61 N 6 7 6 1
A E B _ P S _ S Y N C
F V 1 G N D
FV1GND
F B 1
L 4
A E B 0 0 7
1
2
3 4
5
6
T1
A E B 0 0 5
1
2 3
5
4
F V 1 _ N 1 5 V AF V 1 _ G N D
F V 2 _ G N D
L 1
A E B 0 0 7
1
2
3 4
5
6
F V 2 _ N 1 5 V A
D 1 3 1 N 6 7 6 1
F V 1 G N D
Name 16FIELDS iPDR – Subject
CHANNEL: BIAS STUB HEATSHIELD
Name 17FIELDS iPDR – Subject
FLOATING GROUND DRIVER
C 8 31 0 0 0 p F , 2 0 0 V
D 3 11 N 6 6 4 2 U S
21
D 4 6
1 N 6 4 9 0 U S2
1
Q 2 0F Z T9 5 8
A _ G N D 1
F V 1 _ N 1 5 V A _ F I L T A _ G N D 1
F V 1 _ P 1 5 V A _ F I L T
A E B _ P 1 0 0 V A
A _ G N D 1
R 9 92 2 1
R 1 0 11 .0 0 K
R 9 83 . 3 2 K
-
+
U 1 1 2 A
R H 1 0 7 8
3
21
510 6
4
D 4 5
1 N 6 4 9 0 U S
21
F L O A T_ G N D 1
V S P H E R E 1
-
+ U 1 1 AA D 6 4 8
2
31
84
A _ G N D 1
F L G N D 1
R 1 0 21 0 .0 K
C 8 2
0 . 0 1 u F , 2 0 0 V
C 8 6
0 .0 1 u F , 2 0 0 V
R 9 51 0 .0 K
R 9 71 .0 0 K
C 8 40 .0 1 u F , 2 0 0 V
F V 1 _ G N D
R 9 64 7 . 5 K
R 1 0 05 1 .1 K
F V 1 _ P 1 5 V A _ F IL T
F V 1 _ P 1 5 V A _ F I L T
D 3 01 N 6 6 4 2 U S
21
F V 1 _ N 1 5 V A _ F IL T
C 8 51 0 0 0 p F , 2 0 0 V
Q 1 9F Z T4 5 8
1
32
Name 18FIELDS iPDR – Subject
LAYOUT and PARTS
• LAYOUT– AEB ETU Layout started in October 2013.– Schematic will be finalized after peer review
• MASS and POWER– ± 12V and ± 100V is now generated by LNPS. Helped mass. – Power updates are submitted to LNPS. No issues so far.
• PARTS – MAX256 approval submitted to APL January 2013– DAC121S101 has not been used on heritage designs.
Submitted to APL and approved. 12-bit , low power – Multiplexer on AEB UT16MX110.
• ISSUES– Connecting 12V to heater resistor on preamp (V5)– DAC needs to be at mid-scale when powered on. New DAC is
at zero after power on reset.