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Lattice Semiconductor L-ASC10, Руководство пользователя

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Lattice Semiconductor L-ASC10 Скачать руководство пользователя страница 29

29

ASC Breakout Board

The MON_12V_HS_VOLTAGE signal is also used by the Hot Swap function to monitor the load capacitor C15 volt-
age using the HVMON of the ASC. The Hot Swap function monitors the load capacitor C15 voltage for the following 
reasons: 

• to see that C15 is charging up and there is not a short or open in the circuit

• to see that C15 has reached a voltage where a higher current limit can be used

• to know when C15 is close to the 12 V supply voltage – Hot Swap is complete. 

When Hot Swap is disabled R76 provides a discharge path for C15 to prepare the circuit for subsequent Hot 
Swaps. LED D12 and bias resistor R77 give a visual indication that the Hot Swap process is complete.

Fast Shutdown Circuit

The fast shutdown circuit for the 12 V Hot Swap is shown in Figure 24 below. The ASC_12V_OC_SHUTDOWN sig-
nal is output from the main FPGA board via the ASC Interface Connector. The ASC_12V_OC_SHUTDOWN signal 
is active high, and by default pulled up to 3.3 V by R79. When ASC_12V_OC_SHUTDOWN is high, Q12 is biased 
on. This will pull the MOSFET gate low, holding the MOSFET off. When ASC_12V_OC_SHUTDOWN is driven low, 
Q12 will be turned off. When Q12 is turned off, the Hot Swap MOSFET(s) will be controlled by the charge pump 
voltage. The fast shutdown feature can be implemented using the Hot Swap component in Platform Designer. 
Assign the FPGA PIO connected to ASC_12V_OC_SHUTDOWN on the main FPGA board to the Fast Shut Down 
feature in Platform Designer. See the 

References

 section for more details.

Figure 24. 12 V Hot Swap - Fast Shutdown Circuit

Current Sense Feedback Circuit

The 12 V Hot Swap circuit on the ASC Breakout board includes a current sense feedback circuit, shown in 
Figure 25. The purpose of this circuit is for demonstration and evaluation only, it does not need to be included on a 
customer application board. The current sense amplifier (U3 – ZXCT1009 from Diodes, Inc) provides an output 
current proportional to the voltage measured over R73. Based on the R73 resistance (10 m

Ω

) and the R95 resis-

tance (10 k

Ω

), the ratio of output voltage to sensed current across R73 is about 1 V / 1A (this ratio is also main-

tained when Q11 and R68 are used instead of Q9 and R73). The test point I_12V_HS can be monitored on an 
oscilloscope to confirm the Hot Swap operation and evaluate the current behavior during Hot Swap. The internal 
current sense amplifier in the ASC is used in the Hot Swap algorithm, the circuit formed by U3 and R95 is only 
included to provide observable current feedback during the evaluation stage.

ASC INT
Connector

+3.3

V

ASC_12

V

_OC_SHUTDO

WN

Q12

2

N

3904

TP15

12

V

_SD

N

1

R79
1k

Sheet [2]

To Supply-Based

Hot Swap

MOSFET Gate

Содержание L-ASC10

Страница 1: ...ASC Breakout Board User Guide EB92 Version 1 0 July 2015 ...

Страница 2: ...d the complete set of schematics and the bill of material for the ASC Breakout Board The ASC Breakout Board is also known as the L ASC10 Evaluation Board Features The ASC Breakout Board features the following on board components and circuits L ASC10 ASC Hardware Management Expander Two Potentiometers for Voltage Monitor Testing One Push Button Switch as GPIO Input One 8 bit DIP Switch for I2 C Add...

Страница 3: ...e Hot Swap and Trim circuits populated which are not populated in the released version of the breakout board See Board Hardware Features for more detail on which circuits are populated on the breakout board Component location references are relative to the top of the board with the silk screen text in the readable orientation as shown in the photo Figure 1 ASC Breakout Board Top View ...

Страница 4: ...4 ASC Breakout Board Figure 2 ASC Breakout Board Bottom View ...

Страница 5: ...e monitoring sequence and margin control channels The ASC includes dedicated interfaces supporting the exchange of monitor signal status and output control signals with these central ized hardware management controllers Up to eight ASC devices can be used to implement a hardware manage ment system The list below summarizes the hardware features of the ASC used on the breakout board These features ...

Страница 6: ...gnal connections and board compo nents are described in Table 1 The schematic sheet location for the given components and signals are also listed see the Appendix A Schematics section Table 1 Voltage Monitor Components and Signals Component Signals Ref Des Schematic Sheet Description Components Populated on Breakout Board Slider Potentiometers POT1 and POT2 R50 R52 5 1 kΩ slider pot provides a var...

Страница 7: ...es resistor Also connected to J5 terminal See the Closed Loop Trimming Not Populated section for more details VMON3 GS_VMON3 2 4 Connected to DCDC3 output 2 5 V via R40 series resistor Also connected to J4 terminal See the Closed Loop Trimming Not Populated section for more details VMON4 GS_VMON4 2 4 Connected to DCDC4 output 1 2 V via R48 series resistor Also connected to J4 terminal See the Clos...

Страница 8: ...e the main D SUB connector The PNP transis tors are connected in the beta compensated PNP temperature monitor configuration preferred configuration for temperature monitors as shown in Figure 5 Provided the temperature monitors are enabled in the design the temperature of each sensor can be read out using I2 C The sensors can also be used to simulate over or under temperature faults Figure 5 Tempe...

Страница 9: ... in the logic design of the main board FPGA GPIO10 is shared with LED10 pressing the push button SW2 will cause LED10 to illuminate Component Signals Ref Des Schematic Sheet Description Components Populated on Breakout Board Temperature Sensor Q3 Q4 5 2N3906 PNP Transistor connected in Beta Compen sated PNP configuration Series Resistors C3 C4 2 150 pF input filter capacitors for temperature monit...

Страница 10: ... Switch Reset Configuration Jumper The ASC on the breakout board can be configured as a Mandatory ASC or Optional ASC This setting is configured in the Platform Designer software and described in the System Connections section of the ASC datasheet The position of jumper J12 shown in Figure 10 from Sheet 2 of the schematic should match the setting in the soft ware This jumper routes the ASC RESETb ...

Страница 11: ... Signal must be connected to FPGA PIO and assigned in Diamond 3 ASC_RDAT ASC Interface Signal must be connected to FPGA PIO and assigned in Diamond 4 ASC_WRCLK ASC Interface Signal must be connected to FPGA PIO and assigned in Diamond 5 MANDATORY_RESET RESETb signal if ASC device is declared as mandatory in Platform Designer Must match J12 setting Reset Configuration Must be con nected to FPGA PIO...

Страница 12: ... as optional in Platform Designer Must match J12 setting Reset Configuration Must be con nected to FPGA PIO and assigned in Diamond 18 I2C_SCL I2 C Clock Signal Should be connected to FPGA SCL pin Main FPGA board should include pull up resistors Used for programming the ASC device 19 I2C_SDA I2 C Data Signal Should be connected to FPGA SDA pin Main FPGA board should include pull up resistors Used ...

Страница 13: ... GPIO9 and shifts the level up to 12 V Green Indicator LED D19 D20 D21 D22 3 4 LED indicates output of DC DC is active LED Bias Resistor R86 R88 R90 R92 3 4 470 Ω resistor limits the LED current NPN Transistor SOT 23 Q13 Q14 Q15 Q16 3 4 2N3904 NPN Transistor drives LED on when DC DC output is active NPN Bias Resistor R85 R87 R89 R91 3 4 4 7 kΩ resistor limits the base current of NPN transis tor Ta...

Страница 14: ...ernal ref erence voltage Otherwise the calculator will add a pull up or pull down resistor in attempt to offset the imbalance between the BPZ voltage setting and DC DC reference voltage The values shown in the schematic have been cal culated for the NQR002A0X4 SIP from GE Industrial For more information on the Trim interface and Calculator please see AN6074 Interfacing the Trim Output of Power Man...

Страница 15: ... of the supplies Note that DCDC3 and DCDC4 do not require the MOSFET circuit this is because there input supply is 5 V See Table 6 for more details Figure 12 DCDC1 Trim and Control Circuit The control signal LED8 is also used to turn on a red LED D7 when it is low and pulled up to 3 3 V by a 2 2 kΩ resistor RN2G Sheet 8 Depending on the enable logic positive or negative of the installed supply the...

Страница 16: ...p and 5 V Hot Swap circuits DC DC Vin Vout VMON Trim Channel GPIO Enable Control ON Logic Level RpdnS Rseries 1 12V_HS 5 V VMON1 TRIM1 GPIO8 0 2 74 kΩ 11 0 kΩ 2 12V_HS 3 3 V VMON2 TRIM2 GPIO9 0 4 42 kΩ 16 0 kΩ 3 5V_HS 2 5 V VMON3 TRIM3 GPIO4 1 6 34 kΩ 22 0 kΩ 4 5V_HS 1 2 V VMON4 TRIM4 GPIO5 1 20 0 kΩ 39 0 kΩ Component Ref Des Schematic Sheet Description Components Not Populated on Breakout Board D...

Страница 17: ...wap circuit using the ASC s built in hardware Table 8 lists the components and signals associated with 5 V Hot Swap opera tion on the ASC Breakout Board Table 8 5 V Hot Swap Components and Signals Component Signals Ref Des Schematic Sheet Description Components Not Populated on Breakout Board Current sense resistor R602 6 5 mΩ 2 W resistor for supply side current monitoring with IMON1 input of ASC...

Страница 18: ...arge Resistors R621 6 4 7 kΩ Resistor discharges load capacitor between Hot Swaps LED Bias Resistor R63 6 3 3 kΩ resistor limits the LED current for D10 Red Indicator LED D10 6 LED to indicate Hot Swap has completed successfully Phoenix 2 Terminal Connector J6 6 5V_HS terminal block connector Current Sense Amplifier U21 6 ZXCT1009 current sense amplifier provides output current proportional to vol...

Страница 19: ... capacitor The N type MOSFET Q6 is controlled by the high voltage output HVOUT2 from the ASC The gate resistor R61 and gate source capacitor C22 are used to maintain a soft turn on of Q6 The increased gate capacitance smooths out the current during the hysteretic control stage see the References section for more details on the Hot Swap behavior IMON VMON6 HVOUT2 Population Options Standard MOSFET ...

Страница 20: ...h Sense Output The circuit in Figure 16 illustrates the Supply based Hot Swap using a MOSFET with Sense output Components from the Standard MOSFET Hot Swap are shown to illustrate the shared connections between the two circuits Q6 R58 R59 R60 R61 C22 should not be populated when the MOSFET with Sense output is used The MOSFET with Sense output variation has Q5 connected to the supply side of R57 T...

Страница 21: ... is shown in Figure 17 below The ASC_5V_OC_SHUTDOWN signal is output from the main FPGA board via the ASC Interface Connector The ASC_5V_OC_SHUTDOWN signal is active high and by default pulled up to 3 3 V by R64 When ASC_5V_OC_SHUTDOWN is high Q7 is biased on This will pull the MOSFET gate low holding the MOSFET off see the Hot Swap circuit description above for more details When ASC_5V_OC_SHUTDOW...

Страница 22: ...e used instead of Q6 and R60 The test point I_5V_HS can be moni tored on an oscilloscope to confirm the Hot Swap operation and evaluate the current behavior during Hot Swap The internal current sense amplifier in the ASC is used in the Hot Swap algorithm the circuit formed by U2 and R94 is only included to provide observable current feedback during the evaluation stage Figure 18 5 V Hot Swap Curre...

Страница 23: ... Q9 and Q10 are turned off Population option to support standard MOSFET Q9 versus MOSFET with Sense output Q11 MOSFET with Sense Output Q113 7 N Channel MOSFET supply side Hot Swap switch supplies power to 12V_HS and load capacitor C15 with Q10 Sense output provides proportional current to drain current Gate Drive Resistor R673 7 2 2 kΩ resistor located close to MOSFET Q11 limits parasitic oscilla...

Страница 24: ...Swap algorithm Charge Pump Discharge Resistor R80 7 10 kΩ resistor provides discharge path for C19 when Hot Swap is disabled NPN Fast Shutoff Transistor Q12 7 NPN transistor provides fast pull down of Q9 Q10 Q11 gate voltages enables fast shutdown from FPGA via ASC Interface connector during Hot Swap faults Shutoff Transistor Pull up Resistor R79 7 1 kΩ pull up resistor biases Q12 ON by default sh...

Страница 25: ...oltage view and platform designer will automatically scale the trip points up to the input of the resistive divider D11 is included in the circuit to protect the voltage monitor input from transient voltages above the 5 9 V input volt age The clamp voltage of 5 1 V is well below the 5 9 V max operating voltage for the VMON channel HIMON ASC INT Connector VMON9 HVOUT1 sense X 600 I_12V_HS 1V per 1A...

Страница 26: ...voltage through diode D13 At this time PNP transistor Q17 will be off due to the emitter base voltage being below the Q17 cutoff voltage the emitter voltage will be around 12V_SW minus 0 7 V while the base voltage is 12V_SW When the CHARGE_PUMP signal toggles up to 12 V the voltage on C18 will be added to the CHARGE_PUMP output voltage resulting in the generation of approximately 22 V at the junct...

Страница 27: ...TAGE and MON_12V_HS_CURRENT are connected to the HIMONN_HVMON and HIMONP signals of the ASC These signals are protected from momentary over voltage including inductive flyback voltages when Q9 and Q10 are turned off by the resistor R74 R75 and capacitor C16 C17 pair snub ber circuit between the sensing resistor and the device inputs The sensing resistor R73 is connected through the snubber circuit...

Страница 28: ...ush current during the ini tial Hot Swap turn on and smooths out the current during the hysteretic control stage see the References section for more details on the Hot Swap behavior Figure 23 12 V Hot Swap SENSEFET Circuit The signals MON_12V_HS_VOLTAGE and MON_12V_HS_CURRENT are connected to the HIMONN_HVMON and HIMONP signals of the ASC These signals are protected from momentary over voltage inc...

Страница 29: ...rge pump voltage The fast shutdown feature can be implemented using the Hot Swap component in Platform Designer Assign the FPGA PIO connected to ASC_12V_OC_SHUTDOWN on the main FPGA board to the Fast Shut Down feature in Platform Designer See the References section for more details Figure 24 12 V Hot Swap Fast Shutdown Circuit Current Sense Feedback Circuit The 12 V Hot Swap circuit on the ASC Bre...

Страница 30: ...ns each to the 12V_SW 5V_SW and 3 3 V voltage rails The next eight rows provide ten open connections each these can be used for mounting and connecting through hole components The bottom row provides ten connections to the ground plane of the breakout board HIMON I_12V_HS 1V per 1A sensed Demonstration Circuit to Output Monitored Current to Test Point Not required for Hot Swap Operation MON_12V_HS...

Страница 31: ...des SMD 2512 2 R112 R113 Current Sense Resistors Shunts Through Hole Prototype Area 12V_SW Sheet 7 5V_SW Sheet 2 6 3 3V Sheet 2 3 4 5 6 7 8 9 AF22 AF12 AH21 AJ15 AE18 AH11 AB13 AC20 AJ22 AF13 AJ21 AJ16 AA11 AG20 AB14 AD11 AG13 AJ17 AE19 AB15 AK21 AH12 AD12 AH22 AE13 AJ18 AF20 AH13 AB16 AD13 AK22 AE14 AJ19 AA12 AH14 AB17 AD14 AG14 AK11 AA13 AB18 AH15 AD15 AF14 AJ20 AA14 AH16 AB19 AD16 AG15 AK12 AA1...

Страница 32: ... Guide DS1042 L ASC10 Data Sheet TN1225 Platform Manager 2 Hardware Checklist Platform Designer 3 1 User Guide AN6041 Extending the VMON Input Range of Power Platform Management Devices AN6074 Interfacing the Trim Output of Power Manager II Devices to DC DC Converters Technical Support Assistance Submit a technical support case through www latticesemi com techsupport Revision History 2015 Lattice ...

Страница 33: ... 2 2 1 1 D D C C B B A A Contents ASC System Block Diagram Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 1 ASC System Block Diagram ASC Breakout Board B of B d Project of B d Proj t ...

Страница 34: ..._HS_CURRENT Sheet 7 5V_HS_DRIVE Sheet 6 LED 1 10 Sheet 3 4 5 8 GS_VMON1 Sheet 3 GS_VMON2 Sheet 3 GS_VMON3 Sheet 4 GS_VMON4 Sheet 4 5V_HS Sheet 2 4 6 12V_HS Sheet 3 7 3 3V Sheet 3 4 5 6 7 8 9 10 11 3V Sheet 9 ASC_5V_OC_SHUTDOWN Sheet 6 MON_12V_IN Sheet 7 5V_HS Sheet 2 4 6 5V_SW Sheet 6 9 10 Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com B...

Страница 35: ...d Rev Project Wednesday April 30 2014 B B 11 3 Trims DCDC2 1 Do Not Populate B R92 470 J5 DCDC2 A B C D R26 open RpupS Q2 FDV301N J4 DCDC1 A B C D R22 1K R23 270 R30 open RpdnD R32 270 R90 470 R28 16 0k Rs R31 680 NQR002A0X4Z DCDC1_A DI GND 3 Vin 2 On Off Control 1 Trim 5 Vout 4 D22 Green SM_LED_0603 R91 4 7k C6 10uF 6 8V OKY T 3 D12P C DCDC2_B DNI GND 3 Vin 2 On Off Control 1 Trim 4 Vout 5 R24 10...

Страница 36: ...tticesemi com Board Rev Project Wednesday April 30 2014 B B 11 4 Trims DCDC3 4 Do Not Populate B R38 open RpdnD R86 470 R47 330 R46 open RpdnD R85 4 7k Q14 2N3904 C12 10uF 6 8V R41 100 R39 470 R37 open RpupD R35 6 34k RpdnS R45 open RpupD R43 20 0k RpdnS R88 470 R49 100 Q13 2N3904 C9 6 8uF 20V R42 open RpupS OKY T 3 D12P C DCDC4_B DNI GND 3 Vin 2 On Off Control 1 Trim 4 Vout 5 R44 39 0k Rs NQR002A...

Страница 37: ... Sheet 2 TEMP_SENSE1P Sheet 2 TEMP_SENSE1N Sheet 2 TEMP_SENSE2P Sheet 2 TEMP_SENSE2N Sheet 2 LED10 Sheet 2 8 3 3V Sheet 2 3 4 6 7 8 9 10 Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 5 Inputs Temperature Sensors Trim Pots Switches B B Q4 2N3906 R51 1k R50 1k 1 3 2 SW2 GPIO10 1 4 2 3 R53 1...

Страница 38: ...rd 5V_HS 3 3V 3 3V 5V_HS_DRIVE Sheet 2 5V_HS Sheet 2 4 5V_HS_CURRENT_P Sheet 2 5V_HS_CURRENT_N Sheet 2 ASC_5V_OC_SHUTDOWN Sheet 2 5V_SW Sheet 2 9 10 3 3V Sheet 2 3 4 5 7 8 9 10 Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 6 Hot Swap 5V Do Not Populate B kelvin sense Q5 BUK7C06 40AITE R58...

Страница 39: ...12V_HS Sheet 2 3 MON_12V_HS_VOLTAGE Sheet 2 12V_SW Sheet 9 10 3 3V Sheet 2 3 4 5 6 8 9 10 Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 7 Hot Swap 12V Do Not Populate B C16 10nF R76 10k R72 2 2k R70 24 Q12 2N3904 R68 6 20 1 R95 10k 1 C17 10nF C15 1000uF 25V R77 10k D12 Red SM_LED_0603 Q9 ...

Страница 40: ...onductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 8 LEDs B Schematic Rev D1 Red RN1A 2 2k 10 1 RN2B 2 2k 2 RN1C 2 2k 3 D4 Red R82 2 2k RN1G 2 2k 8 RN1F 2 2k 7 RN1E 2 2k 5 6 RN1H 2 2k 9 D2 Red D6 Red RN2A 2 2k 10 1 RN2D 2 2k 4 D7 Red RN1B 2 2k 2 RN2E 2 2k 5 6 RN2F 2 2k 7 RN2C 2 2k 3 D8 Red R81 2 2k RN1D 2 2k 4 D3 Red D5 Red RN2H 2 2k 9 RN2G 2 2...

Страница 41: ...eet 2 6 10 12V_SW Sheet 7 10 11 3V Sheet 2 Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 9 Board Power Do Not Populate B J14 HEADER 2 1 2 C31 100nF 25V SW1 SW DPDT 2 3 5 6 1 4 J1 2 Position Terminal Block A B J2 PWR JACK 3 2 1 J3 2 Position Terminal Block A B R96 4 53K C30 22uF 25V D17 TR...

Страница 42: ...21 R105 1k DNI AJ16 AA11 MH1 M_HOLE1 DI IW_MNT0 1 1 AG20 AB14 AD11 AG13 Q20 IRF7832 DNI AJ17 AE19 AB15 AK21 AH12 AD12 MH4 M_HOLE1 DI IW_MNT0 1 1 R106 1k DNI AH22 AE13 R111 1k DNI AJ18 AF20 AH13 AB16 Q22 2N3904 DNI AD13 AK22 AE14 AJ19 AA12 AH14 AB17 AD14 Q21 IRF7832 DNI R107 1k DNI MH2 M_HOLE1 DI IW_MNT0 1 1 AG14 AK11 AA13 AB18 AH15 AD15 AF14 AJ20 AA14 Q23 2N3904 DNI AH16 AB19 R112 1k DNI AD16 AG15...

Страница 43: ... 4 4 3 3 2 2 1 1 D D C C B B A A Mechanical Drawing Date Size Schematic Rev of Sheet Title Lattice Semiconductor Applications Email techsupport Latticesemi com Board Rev Project Wednesday April 30 2014 B B 11 11 Mechanical Drawing ASC Breakout Board B Date ...

Страница 44: ...512 CTS Resistor 745C101222JP 2 R1 R2 24 Ω Resistor SMD 0603 Panasonic ERJ 3GEYJ240V 1 R3 10 kΩ Resistor SMD 0603 Panasonic ERJ 3GEYJ103V 1 R4 0 Ω Resistor SMD 0603 Panasonic ERJ 3GEY0R00V 2 R5 R6 270 Ω Resistor SMD 0603 Panasonic ERJ 3GEYJ271V 3 R9 R51 R53 1 kΩ Resistor SMD 0603 Panasonic ERJ 3GEYJ102V 1 R10 18 0 kΩ Resistor 1 SMD 0603 Panasonic ERJ 3EKF1802V 1 R11 14 0 kΩ Resistor 1 SMD 0603 Pan...

Страница 45: ...10 V SM_SOD_123 Diodes Inc MMSZ5240B 7 F 2 D16 D18 Schottky 30 V 500 mA SM_SOD_923 ON Semiconductor NSR0530P2T5G 1 D17 TVS Diode 22 V 600 W SM_SOD_214AA_12 Littlefuse SMBJ22CA 4 D19 D20 D21 D22 Green LED SMD 0603 Lite On Inc LTST C190KGKT Jumpers 4 J1 J3 J6 J8 2 Position Terminal Block TERM_BLOCK_2POS Phoenix 1727010 1 J2 Pwr Jack PWR_JACK_PINS CUI Inc PJ 102AH 1 J4 J5 J7 J9 4 Position Terminal Bl...

Страница 46: ...Panasonic ERJ 3GEYJ240V 3 R711 R72 R613 2 2 k SMD 0603 Panasonic ERJ 3GEYJ222V 1 R73 0 01 SMD 2512 Bourns CRA2512 FZ R010ELF 1 R95 10 k SMD 0603 Panasonic ERJ 3EKF1002V 1 R78 4 7 M SMD 0603 Panasonic ERJ 3GEYJ475V 1 R80 510 k SMD 0603 Panasonic ERJ 3GEYJ514V 4 R85 R87 R89 R91 4 7 k SMD 0603 Panasonic ERJ 3GEYJ472V 1 R94 20 k SMD 0603 Panasonic ERJ 3EKF2002V 1 R96 4 53 k SMD 0603 Panasonic ERJ 3EKF...

Страница 47: ...nnections swapped Q17 needs to be populated according to Figure 40 with the connections swapped in order for the 12 V Hot Swap circuit to function properly Figure 39 12 V Hot Swap Charge Pump Q17 Footprint Error Figure 40 12 V Hot Swap Charge Pump Q17 Correction One method for fixing the connection on the board is to place Q17 2N3906 in the configuration shown in Figure 41 In this configuration Q1...

Страница 48: ...48 ASC Breakout Board Figure 41 Q17 Orientation for Corrected Connection ...

Страница 49: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Lattice LPTM ASC B EVN ...

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