DEMO MANUAL DC2386A-A/DC2386A-B LTC4125EUFD and LTC4120EUD Wireless Power Transfer Battery Charger Demonstration Kit DESCRIPTION Demonstration kit DC2386A is a kit of the DC2330A LTC®4125EUFD demonstration board, the DC2445A-A/ DC2445A-B LTC4120EUD demonstration board, and an assortment of different length standoffs. The DC2330A can deliver up to 1.68W to the receive board with up to 12mm spacing between the transmit and receive coils. The DC2330A transmitter supports Foreign Object Detection via the LTC4125. Design files for this circuit board are available at http://www.linear.com/demo/DC2386A 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. CONTENTS 1 × DC2330A (LTC4125EUFD) Demo Board 1 × DC2445A-A/DC2445A-B (LTC4120EUD) Demo board (with 12.5mm (0.5") Nylon Standoffs, 8.25mm Gap), see Figure 3 4 × 6.25mm (0.25˝) Nylon Standoffs (2.0mm Gap) 4 × 9.5mm (0.375˝) Nylon Standoffs (5.25mm Gap) 4 × 15.9mm (0.625˝) Nylon Standoffs (11.65mm Gap) Kit Build Options KIT NUMBER TX BOARD DC2386A-A DC2330A DC2386A-B DC2330A LTC TX PART NUMBER RX BOARD LTC RX PART NUMBER RX OPTION LTC4125EUFD DC2445A-A LTC4120EUD-4.2 Fixed 4.2V Float Voltage LTC4125EUFD DC2445A-B LTC4120EUD Adjustable Float Voltage PERFORMANCE SUMMARY Specifications are at TA = 25°C SYMBOL PARAMETER CONDITIONS VIN DC2330A Voltage Input IVIN ≤ 2.5A IVIN DC2330A VIN Current VIN = 5V MIN 3 VBAT DC2445A-A BAT Pin Voltage VBAT DC2445A-B BAT Pin Voltage R9 = 1.40MΩ, R10 = 1.05MΩ 4.15 IBAT DC2445A BAT Pin Current VBAT = 3.7V, DC2445A-A/DC2445A-B(R5) = 3.01kΩ AIR GAP Separation Between LTX and LRX IBAT = 400mA (Figure 3) Figure 1. DC2330A Picture TYP 4.2 MAX 5.5 V 2.0 A 4.25 V 4.2 370mA 385mA UNITS V 400mA 8.25 A mm Figure 2. DC2445A-A/DC2445A-B Picture dc2386aabfa 1 DEMO MANUAL DC2386A-A/DC2386A-B QUICK START PROCEDURE Refer to Figure 4 for the proper measurement equipment setup and jumper settings, DC2445A mounting on DC2330A, and follow the procedure below. lighting up sequentially. When a valid load is found the LED sweeping will freeze until the next search period, ≈ 3.7s later. Note that the last LED, the red LED, should not normally be lit. NOTE. When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the Observe AM1 and AM2. AM2 should have increased from ≈10mA RMS, 250mA peak to about 600mA. AM1 oscilloscope probe. Measure the input or output voltage should be reading 380mA ~ 400mA of charge current ripple by touching the probe tip directly across the VCC or VIN and GND terminals. See Figure 5 for proper scope into the battery emulator. All the charge LEDs on the probe technique. DC2445A-X should now be lit. 1. Place the DC2445A-A/DC2445A-B board atop the If the DC2445A-X board is receiving power, it will atDC2330A board, by aligning: (See Figure 4) tempt to charge the battery. Again this is evinced by the green LEDs lighting. If all the green LEDs are lit, DC2330A Mounting Hole DC2445A-A/B MH the LTC4120EUD, on the DC2445A, is charging at the MH3=>MH1 full programmed battery charge current. MH2=>MH2 3. The LTC4125EUFD on the DC2330A, keeps the transmit power at slightly more than the load requires for ≈ 3.7s, MH4=>MH3 then searches again. This is why the blue LEDs on the MH6=>MH4 DC2330A go out and start ramping up again. This should result in the transmit antenna being directly 4. When the system is operating correctly, slide a piece of above the receive antenna, with the centers aligned. blank PCB*, or coin between the transmit and receive The standoffs on the DC2445A-A/DC2445A-B are coils. The transmit current should immediately drop to 0.5"(12.5mm) when shipped. This results in an air gap 0A. This is the Foreign Object Detection in operation, of 8.25mm (See Figure 3). The DC2386A kit ships with preventing a foreign object from getting hot. three additional standoff sizes. This allows the air gap to be varied from 0.083" (~2.0mm) to 0.46" (~11.6mm). 5. Please change the standoffs on the DC2445A-A/ DC2445A-B board to yield the air gap most appropriate 2. Set PS1 = 3.7V, PS2 = 5V, and enable the power supfor your project. plies. The DC2330A should start sweeping the LTX cur- *Testing with a blank PCB of at least 10cm2 (1.5 IN2) of copper. rent looking for a load. This is evinced by the blue LEDs F01 LRX EMBEDDED IN PCB DC2445 PCB 4×12.5mm (0.5 INCH) STANDOFFS 8.25mm 12.5mm LTX DC2330 PCB 4.25mm Figure 3. As Shipped Demo Kit Air Gap 2 dc2386aabfa DEMO MANUAL DC2386A-A/DC2386A-B QUICK START PROCEDURE + PS1 + 3.7V BIPOLAR SUPPLY ±1A – – AM1 CONNECTING THE DC2445A-A/DC2445A-B PS2 5V SUPPLY 1A + – + – AM2 CONNECTING THE DC2330A PS2 5V SUPPLY 1A + – + – AM2 + PS1 + 3.7V BIPOLAR SUPPLY ±1A – – AM1 DC2445A-A/DC2445A-B MOUNTED ON TOP OF DC2330A Figure 4. Equipment Setup for DC2386A–A/DC2386A–B Kit Figure 5. Measuring Input or Output Ripple Note: All connections from equipment should be Kelvin connected directly to the board pins which they are connected on this diagram and any input or output leads should be twisted pair. dc2386aabfa 3 DEMO MANUAL DC2386A-A/DC2386A-B THEORY OF OPERATION The DC2386A kit demonstrates operation of a magnetically coupled resonant Wireless Power Transfer (WPT) system. The LTC4125EUFD transmitter searches for a suitable load, and powers it until the next search period. The LTC4120EUD battery charger uses DHC to control its input power ensuring full power charging under a variety of operating conditions. DC2330A – Wireless Power Transmitter Board featuring the LTC4125EUFD The DC2330A Wireless Power Transmitter is used to power a load wirelessly. In this kit, it is used in conjunction with the DC2445A-X Wireless Power Receiver Board to charge a Li-Ion battery. The LTC4125EUFD implements an AutoResonant drive of the series resonant tank composed of LTX (See LTX Table 1 for a list of tested LTX coils) and CTX (See DC2330A Schematic on page 12). The AutoResonant drive uses a zero crossing detector to determine the resonant frequency of the series LC circuit. All subsequent duty cycles discussed here use the resonant period determined by the AutoResonant circuitry. The SW1 and SW2 pins each have a half bridge drive. At zero current crossing, whichever SWX pin has current flowing out of the pin, is set to VIN for a duty cycle determined by the corresponding PTHX pin (see Figure 10). When the SWX pin is set to VIN, it increases the current flowing in the transmitter series resonant LC circuit. The absolute value of the tank current is determined by the resonant tank components and also by the reflected load impedance. The LTC4125EUFD sweeps the duty cycle by way of a 5 bit DAC that sets the PTHX voltage, and hence duty cycle. The FB pin is driven by the node forming the junction of the transmit coil, LTX, and the transmit capacitor, CTX. The voltage at this node is proportional to the circulating current in the transmitter resonant tank (see Figure 8). The LTC4125EUFD monitors the FB pin and when a valid exit condition is found, stops incrementing the PTH VDAC. The PTH VDAC is held at the detection level for the rest of the sweep cycle. Some exit conditions are adjustable by the user, and some are proprietary and not adjustable. As load power requirements may change or foreign objects may enter the WPT transfer field, the LTC4125EUFD periodically repeats the sweep as described above. Several of the components of the sweep period are adjustable, but the DC2330A sets the overall sweep period to about 3.7s (see Figure 9). The AutoResonant detect circuity will shift the transmitter frequency for some fault conditions, particularly Foreign Object Detection (FOD). Table 1. Tested LTX Coils Vendor Part Number Würth 760308100110 Inter-Technical Sunlord 4 L4000T02 SWA50N50H35C05B URL http://www.we-online.com http://www.inter-technical.com/index.php?page=products# http://www.sunlordinc.com/ dc2386aabfa DEMO MANUAL DC2386A-A/DC2386A-B THEORY OF OPERATION Figure 6. Coil Side of Transmit Coil, LTX Figure 7. Backside of Transmit Coil, LTX Figure 8. FB ∝ I(LTX), Lt. Blue = LTC4125.FB, Grn. = I(LTX) Figure 9. Dk. Blue = V(PTH), Lt. Blue = LTC4125.FB, Pk. = V(PROG), Grn. = LTC4120.IN dc2386aabfa 5 DEMO MANUAL DC2386A-A/DC2386A-B THEORY OF OPERATION Figure 10. Dk. Blue = LTC4125.SW1, Lt. Blue = LTC4125.SW2, Grn. = I(LTX) Figure 11. Dk. Blue = LTC4120.IN, Grn. = I(BAT) The LTC4125EUFD also monitors the FB for fault conditions and terminates the sweep if one is detected. ferrite shield temperature, especially on the distal surface of the ferrite shield. Thermal Shutdown Figure 6 is a thermal image of the coil side of the Wurth 760308100110 transmit coil at 42.0°C, and Figure 7 is a thermal image of the backside of the same coil at 41.7°C. Figure 7 is was taken in free air, after heating the coil while in contact with the DC2330A PCB. The NTC is located in hole N, which is aligned with the ring of max temperature, on the backside of the transmit coil, LTX. The LTC4125 needs to produce a large magnetic field in LTX, in order to transfer as much power as possible. The magnetic field is proportional to the current flowing in LTX, and the RMS value of the current flowing in LTX will dissipate any power not transferred to the load. The LTC4125 uses an NTC resistor to monitor the temperature of LTX and shut off the transmit power if the NTC reports a temperature higher than ≈ 42°C. Please see the applications section of the data sheet for more detailed information. Transmit coils are often quite large and bulky, composed of the windings and a very usually a ferrite shield. It is undesirable to place the temperature monitoring NTC resistor on the windings. This is because the winding are radiating power, and the NTC resistor and wires form a loop. If this loop is immediately adjacent to the transmit coil windings, it will pick up significant voltage and apply it to the LTC4125 NTC pin. The ideal place for the NTC would be on the side of the transmit coil distal to the windings. Therefore it is necessary to study the relationship between winding temperature and 6 These thermal images are very specific to the Wurth 760308100110 transmit coil and PCB mount. This study should be repeated for any application circuit, using a different transmit coil to ensure proper NTC placement. DC2445A-A/DC2445A-B – Wireless Power Receiver Board featuring the LTC4120EUD The DC2445A-A/DC2445A-B demo board implements a series resonant LC circuit. The AC waveform on the resonant circuit is rectified and applied to the IN pin of the LTC4120EUD Wireless power receiver IC. The Undervoltage Current limit (UVCL) of the LTC4120EUD is at ≈ 12V. So, when VIN exceeds the UVCL threshold, the LTC4120EUD tries to charge a battery on its BAT pin. The LTC4120EUD also has Dynamic Harmonization Control (DHC), which can be used to tune or detune the dc2386aabfa DEMO MANUAL DC2386A-A/DC2386A-B THEORY OF OPERATION Figure 12. Power Transfer vs Axial Distance and Misalignment dc2386aabfa 7 DEMO MANUAL DC2386A-A/DC2386A-B THEORY OF OPERATION receive circuit to receive more or less power as needed. The DC2445A-X is designed to work with the DC2330A wireless power transmitter board. The LTC4125EUFD on the DC2330A is already searching for an appropriate load so the DHC loop has been repurposed on the DC2445A demo board to provide presence detect. DHC Because the LTC4125EUFD on the DC2330A wireless power transmitter already searches for an appropriate load, the DHC loop on the DC2445A has been repurposed. When VIN is above 14V, the DHC pin is high impedance, and when it is below 14V it is grounded through a MOSFET. The receive tank is tuned to a fixed 127kHz, and on the DC2445A-X the DHC does not change this frequency. On the DC2445A-X the DHC pin is used to activate a 15V clamp. The assertion of this clamp signals the LTC4125, on the DC2330A board, that it is transmitting sufficient power. The Battery Charger The battery charger is a current mode buck regulator from IN to BAT. The current in the switching inductor (L1) is monitored by an on die current sense resistor between the CHGSNS and BAT pins. This current is used for cycle by cycle PWM duty cycle determination, and averaged to indicate battery charge current. The charger is a full featured CC-CV charger, with low battery trickle charge (See Figure 11). The Charge Voltage is fixed at 4.2V for the LTC4120EUD-4.2, and programmable on the LTC4120EUD. The charge current is programmed by the resistor on the PROG pin, R5 on the DC2445A-X. Summary The DC2386A Wireless Power Transfer Battery Charger Demonstration Kit allows full exploration of the LTC4125EUFD Wireless Power Transmitter and LTC4120EUD Wireless Power battery charger. The DC2386A makes it possible to determine how the LTC4125EUFD identifies a valid load or foreign object. 8 dc2386aabfa DEMO MANUAL DC2386A-A/DC2386A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER DC2330A Required Circuit Components 1 1 CTX CAP, CHIP, C0G, 0.1µF, ±5%, 100V, 1206 TDK, C3216C0G2A104J160AC 2 2 C4, C5 CAP, CHIP, X7R, 0.01µF, ±10%, 50V, 0402 TDK, C1005X7R1H103K050BB 3 1 C6 CAP, CHIP, X7R, 4700pF, ±10%, 50V, 0402 MURATA, GRM155R71H472KA01 4 1 C7 CAP, CHIP, C0G, 470pF, ±10%, 50V, 0402 KEMET, C0402C471K5GACTU 5 1 C8 CAP, CHIP, X5R, 0.1μF, ±10%, 25V, 0402 TDK, C1005X5R1E104K050BC 6 1 C9 CAP, CHIP, X7R, 0.1µF, ±10%, 100V, 0603 MURATA, GRM188R72A104KA35D 7 1 C10 CAP, CHIP, X5R, 1µF, ±10%, 16V, 0402 TDK, C1005X5R1C105K050BC 8 2 C11, C12 CAP, CHIP, X5R, 47µF, ±20%, 6.3V, 0805 TDK, C2012X5R0J476M125AC 9 1 D3 DIODE, SMT, SCHOTTKY, 30V, 200mA, 0.6mm × 1.0mm DFN2 DIODES INC., BAT54LP 10 1 D4 DIODE, SMT, 100V, 250mA, 50ns, SOD523 DIODES INC., BAS521-7 11 1 LTx Transmit Antenna, 24µH, ±10%, 6A, 0.1Ω, Round, 50mm Diameter WURTH, 760308100110 12 1 NTC Assembly NTC Resistor Assembly, 10k AT 25°C, ±1% MURATA, FTN55XH103FD4B 13 1 R2 RES, CHIP, 4 Terminal, 22mΩ, ±1%, 1W, 3216T4 SUSUMU, KRL3216T4-M-R022-F 14 1 R3 RES, CHIP, 12.4kΩ, ±1%, 1/16W, 040+D20:D262 VISHAY, CRCW040212K4FKED 15 0 R4-OPT, R7-OPT, R11-OPT RES, CHIP, TBD, ±1%, 1/16W, 0402 TBD 16 2 R5, R6 RES, CHIP, 100kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402100KFKED 17 1 R8 RES, CHIP, 0Ω Jumper, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 18 1 R9 RES, CHIP, 3.83kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW04023K83FKED 19 1 R10 RES, CHIP, 59.0kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040259K0FKED 20 1 R14 RES, CHIP, 348kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402348KFKED 21 1 R15 RES, CHIP, 5.23kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW04025K23FKED 22 1 R16 RES, CHIP, 100kΩ, ±1%, 1/8W, 350V, 0603 ROHM, KTR03EZPF1003 23 1 R18 RES, CHIP, 10kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040210K0FKED 24 1 U1 IC, AutoResonant Wireless Power Transmitter, 4mm × 5mm QFN20 LINEAR TECH., LTC4125EUFD#PBF Additional Demo Board Circuit Components 1 3 C1, C2, C3 CAP, CHIP, X5R, 100μF, ±20%, 6.3V, 1206 MURATA, GRM31CR60J107ME39L 2 3 C13, C15, C16 CAP, CHIP, X7R, 0.01µF, ±10%, 50V, 0402 TDK, C1005X7R1H103K050BB 3 2 C14, C17 CAP, CHIP, X5R, 1µF, ±10%, 16V, 0402 TDK, C1005X5R1C105K050BC 4 2 D1, D13 LED, RED, SMT, 0603 LUMEX, SML-LX0603SIW-TR 5 0 D2-OPT DIODE, SMT, SCHOTTKY, 30V, 200mA, 0.6mm × 1.0mm DFN2 DIODES INC., BAT54LP 6 1 D5 LED, GREEN, SMT, 0603 LUMEX, SML-LX0603SUGW-TR 7 7 D6 ~ D12 LED, BLUE, SMT, 0603 LITE-ON, LTST-C193TBKT-5A 8 3 R1, R17, R41 RES, CHIP, 2.2kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04022K20JNED 9 8 R12, R24 ~ R30 RES, CHIP, 102kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402102KFKED 10 1 R13 RES, CHIP, 0Ω jumper, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 11 1 R19 RES, CHIP, 10kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040210K0JNED 12 2 R20, R33 RES, CHIP, 432Ω, ±1%, 1/16W, 0402 VISHAY, CRCW0402432RFKED 13 1 R21 RES, CHIP, 15.4kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040215K4FKED 14 1 R22 RES, CHIP, 27.4kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040227K4FKED 15 1 R23 RES, CHIP, 340kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402340KFKED dc2386aabfa 9 DEMO MANUAL DC2386A-A/DC2386A-B PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 16 1 R31 RES, CHIP, 11.3kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040211K3FKED 17 1 R32 RES, CHIP, 787kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402787KFKED 18 7 R34 ~ R40 RES, CHIP, 6.20kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04026K20JNED 19 1 R42-OPT, R43 RES, CHIP, 1Ω, ±5%, 1/10W, 0603 VISHAY, CRCW06031R00JNED 20 2 U2, U3 IC, Ultralow Power Quad Comparators with Reference, 3mm × 3mm DFN8 LINEAR TECH., LTC1445CDHD#PBF Hardware: For Demo Board Only 1 3 E1, E4, E5 TURRET, 0.09" DIA MILL-MAX, 2501-2-00-80-00-00-07-0 2 2 E2, E3 Vertical Nana Jack, 575-4 KEYSTONE, 575-4 3 1 J1 Micro-USB Receptacle WURTH, 629105136821 4 1 J2 JSC Connector for NTC Assembly MURATA, MM5829-2700RJ4 5 3 JP1, JP2, JP3 3 PIN JUMPER, 2mm Wurth, 62000311121 6 3 JP1, JP2, JP3 SHUNT, 2mm SAMTEC, 2SN-KB-G 7 4 STAND - OFF, NYLON, 0.375" Tall (Snap on) KEYSTONE, 8832 (SNAP ON) 8 0.01 SCOTCH, REMOVABLE POSTER TAPE W/DISPENSER, 0.75in.x 150in. 3M, MMM109 9 0.0004 Heat Cure Thermal Epoxy, 30CC tube ELLSWORTH ADH. 3-6752 TC Adhesive 75G DC2445A-A/DC2445A-B Required Circuit Components 1 1 C2S1 CAP, CHIP, C0G, 0.033µF, ±5%, 50V, 1206/0805 TDK, C2012C0G1H333J125AA 2 1 C1 CAP, CHIP, X5R. 4.7μF, ±10%, 25V, 0805 TDK, C2012X5R1E475K 3 1 C2 CAP, CHIP, X5R, 47µF, ±10%, 16V, 1210 MURATA, GRM32ER61C476KE15L 4 1 C3 CAP, CHIP, X7R, 0.01µF, ±10%, 50V, 0402 TDK, C1005X7R1H103R050BB 5 1 C4 CAP, CHIP, X5R, 2.2µF, ±20%, 6.3V, 0402 MURATA, GRM155R60J225ME15D 6 1 C5 CAP, CHIP, X7S, 10µF, ±20%, 50V, 1210 TDK, C3225X7S1H106M 7 1 C11 CAP, CHIP, X5R, 47μF, ±20%, 6.3V, 0805 TDK, C2012X5R0J476M 8 2 D1, D2 DIODE, SCHOTTKY, 40V, 2A, PowerDI123 DIODES, DFLS240L 9 1 D3 DIODE, ZENER, 13V, ±5%, 150mW, SOD-523 DIODES, BZT52C13T-7 10 1 D4 DIODE, Zener, 39V, ±5%, 1W, PowerDI123 DIODES, DFLZ39 11 1 FD1 25mm Ferrite Disc ELNA MAGNETICS, B67410-A0223-X195 12 0 LRx IND, EMBEDDED, 47µH, 43 Turns EMBEDDED 13 1 L1 IND, SMT, 15µH, 260mΩ, ±20%, 0.86A, 4mm × 4mm LPS4018-153ML 14 1 M1 MOSFET, SMT, 60V, 72mΩ, PowerPAK1212-8 VISHAY, Si7308DN-T1-GE3 15 1 M2 MOSFET, SMT, 30V, 75mΩ, SOT23 VISHAY, Si2343CDS-T1-GE3 16 1 Q1 NPN, SMT, 40V, SOT23 Diodes Inc, MMBT3904-7-F 17 1 R1 RES, CHIP, 1.40M, ±1%, 1/16W, 0402 VISHAY, CRCW04021M40FKED 18 1 R2 RES, CHIP, 412kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402412KFKED 19 2 R3, R7 RES, CHIP, 10kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040210K0FKED 20 1 R5 RES, CHIP, 3.01kΩ, ±1, 1/16W, 0402 VISHAY, CRCW04023K01FKED 21 2 R6, R8 RES, CHIP, 0Ω Jumper, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 26 1 R12 RES, CHIP, 5.1kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04025K10JNED 22 1 R36 RES, CHIP, 1kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04021K00JNED 23 1 R37 RES, CHIP, 24.9kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040224K9FKED 10 dc2386aabfa DEMO MANUAL DC2386A-A/DC2386A-B SCHEMATIC DIAGRAM ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 24 1 R38 RES, CHIP, 470kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW0402470KJNED 25 1 R39 RES, CHIP, 51kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040251K0JNED Additional Demo Board Circuit Components 1 1 C2S2-OPT CAP, CHIP, C0G,TBD, ±5%, 50V, 0603 TBD 2 2 C7, C10 CAP, CHIP, X5R, 1µF, ±10%, 16V, 0402 TDK, C1005X5R1C105K 3 3 C6, C8, C9 CAP, CHIP, X7R, 0.01µF, ±10%, 25V, 0402 TDK, C1005X7R1E103K 4 8 D5 ~ D12 DIODE, LED, GREEN, 0603 LITE-ON, LTST-C193KGKT-5A 5 1 R4 RES, CHIP, 2kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04022K00JNED 6 1 R11 RES, CHIP, 100kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW0402100KJNED 7 1 R13 RES, CHIP, 10kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW040210K0JNED 8 2 R14, R35 RES, CHIP, 432Ω, ±1%, 1/16W, 0402 VISHAY, CRCW0402432RFKED 9 2 R15, R33 RES, CHIP, 22.6kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040222K6FKED 10 1 R16 RES, CHIP, 34.8kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040234K8FKED 11 7 R17 ~ R23 RES, CHIP, 100kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402100KFKED 12 1 R24 RES, CHIP, 49.9kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW040249K9FKED 13 8 R25 ~ R32 RES, CHIP, 1kΩ, ±5%, 1/16W, 0402 VISHAY, CRCW04021K00JNED 14 1 R34 RES, CHIP, 787kΩ, ±1%, 1/16W, 0402 VISHAY, CRCW0402787KFKED 15 2 U2, U3 Ultralow Power Quad Comparators with Reference, 5mm × 4mm DFN16 LINEAR TECH., LTC1445CDHD Hardware: For Demo Board Only 1 6 E1, E2, E5, E6, E9, E10 TURRET, 0.091" MILL-MAX, 2501-2-00-80-00-00-07-0 2 4 E3, E4, E7, E8 TURRET, 0.061" MILL-MAX, 2308-2-00-80-00-00-07-0 3 0 J1-OPT CONN, 3 Pin Polarized HIROSE, DF3-3P-2DSA 4 4 JP1, JP3-JP5 HEADER, 3 PIN JUMPER, 2mm SAMTEC, TMM-103-02-L-S 5 1 JP2 HEADER, 4 PIN JUMPER, 2mm SAMTEC, TMM-104-02-L-S 6 5 JP1-JP5 SHUNT, 2mm SAMTEC, 2SN-BK-G 7 4 Clear 0.085" × 0.335" bumper KEYSTONE, 784-C 8 0.005 SCOTCH, REMOVABLE POSTER TAPE W/DISPENSER, 0.75in. × 0.75in. 3M, MMM109 9 4 STAND-OFF, NYLON, 0.375" KEYSTONE, 8832 DC2445A-A Required Circuit Components 1 0 R9 No Load. SMD 0402 2 1 R10 RES, CHIP, 0Ω Jumper, 1/16W, 0402 VISHAY, CRCW04020000Z0ED 3 1 U1 400mA Wireless Synchronous Buck Battery Charger, 3mm × 3mm QFN16 LINEAR TECH., LTC4120EUD-4.2 DC2445A-B Required Circuit Components 1 1 R9 RES, CHIP, 1.40M, ±1%, 1/16W, 0402 VISHAY, CRCW04021M40FKED 2 1 R10 RES, CHIP, 1.05M, ±1%, 1/16W, 0402 VISHAY, CRCW04021M05FKED 3 1 U1 400mA Wireless Synchronous Buck Battery Charger, 3mm × 3mm QFN16 LINEAR TECH., LTC4120EUD dc2386aabfa 11 1 2 3 GND E5 E4 E3 GND D+ D- ID VBUS 5 3 2 4 1 J1 USB Micro B RECEPTACLE Wurth, 629105136821 VIN E2 GND GND GND GND 9 8 7 6 4 VIN 3 - 5.5V 2A E1 4 C1 100µF 6.3V 1206 OPT R42 1 0603 C2 100µF 6.3V 1206 D1 PWR R1 2.2k 5% R43 1 0603 C3 100µF 6.3V 1206 R8 0 R4 OPT R2 22mOhm 1% R9 3.83k R5 100k R3 12.4k R10 59.0k R6 100k D2 OPT R14 348k 3 Ith = 1.29A Ilim = 1.93A R11 OPT R7 OPT C4 0.01µF 3 EN R13 0 C5 0.01µF ENABLE DISABLE C6 4700pF C7 470pF 2 14 6 13 12 11 10 7 9 5 15 4 3 1 CTS CTD NTC FB 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. GB NC SCALE = NONE 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. APPROVALS 16 21 GND PGND IN1 17 20 IN2 C10 1uF 16V PTHM PTH1 PTH2 DTH FTH IIMON EN IS+ IS- IN U1 LTC4125EUFD D3 BAT54LP CUSTOMER NOTICE UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V JP1 R12 102k 2 18 19 8 DATE: N/A SIZE LTx 24µH JP2 ENABLE NTC DISABLE R18 10k DATE 9 - 23 - 15 1 LTC4125EUFD DEMO CIRCUIT 2330A SHEET 1 OF AUTO RESONANT WIRELESS TRANSMITTER IC NO. IMON 9- 23 - 15 2 2 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C9 0.1µF 0603 100V D4 BAS521 10k@25°C JSC connector T TECHNOLOGY C8 0.1µF R16 100k 0603 1206 100V CTx 0.1µF NTC D5 STATUS R17 2.2k 5% GB 2 C12 47µF 10V 0805 APPROVED DESCRIPTION PRODUCTION FAB REV TITLE: SCHEMATIC R15 5.23k SW2 SW1 STAT C11 47µF 10V 0805 - ECO 1 REVISION HISTORY 2 12 1 4 1 2 3 4 DEMO MANUAL DC2386A-A/DC2386A-B SCHEMATIC DIAGRAM dc2386aabfa 1 2 3 4 JP3 1.221V ENABLE U2E LTC1445CDHD IMON VIN 8 V-REF 9 C14 1µF 16V R20 432 5% 4 DISABLE R19 10k 4 R30 102k R29 102k R28 102k R27 102k R26 102k R25 102k R24 102k R23 340k R22 27.4k R21 15.4k C13 0.01µF C15 0.01µF U2.3 C16 0.01µF U3.3 R32 787k R31 11.3k 3 C17 1µF 16V R33 432 LTC1445CDHD U3D U3C LTC1445CDHD U3B LTC1445CDHD 1.186V U3A LTC1445CDHD U2D LTC1445CDHD LTC1445CDHD U2C 1.186V LTC1445CDHD U2B U2A LTC1445CDHD 3 12 13 10 11 6 7 4 5 12 13 10 11 6 7 4 5 8 V-REF 9 MONITOR 15 16 1 2 15 16 1 2 U3E LTC1445CDHD 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 D6 D7 D8 D9 D10 D11 D12 D13 2 2 2 2 2 2 2 2 14% 29% 43% 57% 71% 86% 100% 150% INPUT CURRENT CUSTOMER NOTICE 1 1 1 1 1 1 1 1 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE GB NC APPROVALS 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 5% R34 6.20k 5% R35 6.20k 5% R36 6.20k 5% R37 6.20k 5% R38 6.20k 5% R39 6.20k 5% R40 6.20k 5% R41 2.2k 2 DATE: N/A SIZE 1 LTC4125EUFD DEMO CIRCUIT 2330A SHEET BAR GRAPH FOR AUTO RESONANT WIRELESS TRANSMITTER TECHNOLOGY 9 - 23 - 15 IC NO. TITLE: SCHEMATIC 2 OF 2 2 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1 1 2 3 4 DEMO MANUAL DC2386A-A/DC2386A-B SCHEMATIC DIAGRAM 13 dc2386aabfa 14 1 2 3 4 VPROG PROG E4 E3 E2 E1 NTC GND Cx 5% R4 2.0k LRx 47µH Embedded Inductor 43T EMBEDDED INDUCTOR CONNECTED DISCONNECTED 4 JP1 5% 50V 1206/0805 C2S1 0.033µF 4 C2S2 TBD 50V 0805 OPT D2 DFLS240L D1 DFLS240L R36 1k 5% D3 BZT52C15 13V D4 DFLZ39 39V Q1 MMBT3904LT1 M1 Si7308DN PRESENCE DETECT C11 47µF 6.3V 0805 R37 24.9k 3 3 JP2 RUN ON VIN > 11V OFF R7 10k R6 0 R5 3.01k INTVCC JP3 FREQ EXT 13 10 12 6 7 16 PROG BATSNS/FB NTC DHC FREQ RUN 5 GND IN 3 17 GND 11 9 8 4 2 1 14 15 -B 2 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE - ECO TECHNOLOGY 1.05MEG DATE: N/A SIZE 1 SHEET LTC4120EUD - 4.2 / LTC4120EUD DEMO CIRCUIT 2445A - A / B 9 - 25 - 15 IC NO. 1 OF 1 2 REV. 400mA WIRELESS SYNCHRONOUS BUCK BATTERY CHARGER TITLE: SCHEMATIC BAT ENTC GND J1 OPT VBAR 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1.40MEG R10 0 Ohm R9 LTC4120EUD CHRG DF3-3P-2DSA 1 3 2 E6 E7 FAULT GND E8 E9 BAT 2.7 V - 11V C2 47µF 400mA 16V 1210 E5 GND OPEN R8 0 R39 51k 5% R12 5.1k 5% DATE 9 - 25 - 15 IN 12 - 40V E10 GEORGE B. APPROVED U1 R10 * R38 470k 5% M2 Si2343CDS R11 100k 5% PRODUCTION 1 1 DESCRIPTION REVISION HISTORY REV LTC4120 - 4.2EUD R9 * C1 4.7µF 25V 0805 L1 15.0µH C4 2.2µF 6.3V INTVCC C3 0.01µF ASSY -A * APPROVALS NC/FBG BAT CHGSNS SW BOOST INTVCC CHRG FAULT U1 LTC4120EUD-4.2 / LTC4120EUD C5 10µF 50V 1210 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. NC VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. GEORGE B. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CUSTOMER NOTICE UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V INT JP4 NTC R3 10k INTVCC 1.5 MHz 750 kHz R2 412k R1 1.40MEG 2 1 2 3 4 DEMO MANUAL DC2386A-A/DC2386A-B SCHEMATIC DIAGRAM dc2386aabfa 1.221V ENABLE C7 1µF 10V R14 432 5% R13 10k DISABLE MONITOR U2E LTC1445CDHD VPROG 8 V-REF 9 JP5 49.9k R24 R23 100k R22 100k R21 100k R20 100k R19 100k R18 100k R17 100k R16 34.8k R15 22.6k C6 0.01µF C8 0.01µF U3.3 C9 0.01µF U2.3 787k R34 R33 22.6k C10 1µF 10V 432 R35 LTC1445CDHD U3D U3C LTC1445CDHD U3B LTC1445CDHD 1.186V U3A LTC1445CDHD U2D LTC1445CDHD LTC1445CDHD U2C 1.186V LTC1445CDHD U2B U2A LTC1445CDHD 12 13 10 11 6 7 4 5 12 13 10 11 6 7 4 5 8 V-REF 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. 9 VBAR 15 16 1 2 15 16 1 2 U3E LTC1445CDHD 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 149 17 3 D5 D6 D7 D8 D9 D10 D11 D12 2 2 2 2 2 2 2 2 6% 19% 31% 44% 56% 69% 81% 94% THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. SCALE = NONE GEORGE B. NC APPROVALS CHARGE CURRENT CUSTOMER NOTICE 1 1 1 1 1 1 1 1 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 5% R25 1k 5% R26 1k 5% R27 1k 5% R28 1k 5% R29 1k 5% R30 1k 5% R31 1k 5% R32 1k DATE: N/A SIZE TECHNOLOGY SHEET LTC4120EUD - 4.2 / LTC4120EUD DEMO CIRCUIT 2445A - A / B 9 - 25 - 15 IC NO. 2 BAR GRAPH FOR 400mA WIRELESS SYNCHRONOUS BUCK BATTERY CHARGER TITLE: SCHEMATIC OF 1 2 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V DEMO MANUAL DC2386A-A/DC2386A-B SCHEMATIC DIAGRAM dc2386aabfa 15 DEMO MANUAL DC2386A-A/DC2386A-B 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 16 Linear Technology Corporation dc2386aabfa LT 0316 REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2016