LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE LX2201 SINGLE CELL LITHIUM ION BATTERY CHARGER EVALUATION BOARD USER GUIDE ® TM Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE TABLE OF CONTENTS Introduction.......................................................................................................................................................3 Schematic ..........................................................................................................................................................4 IC Block Diagram ...............................................................................................................................................5 Evaluation Board Information.............................................................................................................................6 Evaluation Board Hook up .................................................................................................................................7 Evaluation Board Drawing .................................................................................................................................8 Evaluation Board Bill of Materials ......................................................................................................................9 Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE INTRODUCING TO PRODUCT The LX2201 Evaluation Board is available from Microsemi for evaluating the performance of the LX2201 battery charger integrated circuit. (See picture 1) The Evaluation Board contains a small amount of support circuitry that enhances performance in different power configurations. (See schematic 1.) In a typical application, a subset of the support circuitry could be utilized. KEY FEATURES OF THE LX2201 • • • • • • • • • • • • USB compliant Charging States Small, High Power 20-lead MLP package Internal Pass element can function as a reverse direction load switch No Sense Resistor Required Full Capacity Charging Always Cool Running 4.1 or 4.2V Applications Tolerates 5V + 10% Wall Supply Regulation Conditioning Mode For Deep Discharge Built In MOSFET Driver For Easy AC Adapter/USB Implementation Topping Charge For Long Periods Of Non-Use. Inherent Load Disconnect APPLICATIONS • • • • • • Batteries with 350mAH to 2AH ratings Cell Phones PDAs Charging cradles Digital Cameras Low Cost Single L-Ion Cell Chargers PART SPECIFIC INFORMATION Part Number LX2201CLQ1 Temp Range Product Description -65 to 150°C USB Li-Ion Battery Charger Table 1 – Part Information IC EVALUATION BOARDS LX2201CLQ1 LX2201 Eval Table 2 – Evaluation Board Information 1. LX2201CLQ: Patent Pending Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 3 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE SCHEMATIC R10 47K R8 47K R9 47K VID1 1 2 3 HI LO VM 1 2 3 4.1V 4.2V VID0 1 2 3 VDD 1 1 2 3 5 PSW 3 VDD 4 VDD C1 10µF 10V 5 VIN 4 Part LX2201 7 8 15 14 13 Battery Output 12 1 2 BATTERY OUTPUT 11 C4 0.1µF R7 470 C3 10µF 10V VDD 6 10 75K 2 3 9 CCP 1 Q5 DMMT3906W CMP CTP 4 150K 2.5K R12 100K 5 CUS VIN R13 576K BAT BAT 6 VDD VBAT NC BAT Conn3 1 2 3 PSW VM VDD 6 Q2 IRLMS6802 3 2 BAT STAT 2 VDD 16 CCP 1 D4 UPS5817 1 VID1 D3 UPS5817 17 CTP 1 2 3 5 4 6 18 CUS Inputs 19 Logic Pullup BAT 20 D2 B220/A VID0 2 AC2 VDD AC1 USB1 USB2 GND LO PSW VDD + _ GND Discharge Load HI D5 UPGLED R11 499K R15 499K R14 499K Figure 1 – LX2201 Evaluation Board Schematic Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE IC BLOCK DIAGRAM PSW VID0 CHARGE/ DISCHARGE CONTROL VDD STAT 0.1 VIN BAT CHARGE TERMINATION CONTROL CUS CTP USB LIMIT CONTROL VID1 VM CONSTANT VOLTAGE CONTROL CMP TEMPERATURE CONTROL CCP CONSTANT CURRENT CONTROL GND Figure 2 – Simplified Block Diagram Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE JUMPERS EVALUATION BOARD CONNECTORS The LX2201 Evaluation board has three connectors. Function Label on Board Input Power P1 Battery Battery Output System Load Discharge Load Table 3 – Connector Types The LX2201 Evaluation Board has five (5) jumpers. These jumpers have two (2) possible positions and are designed to always be installed in one position or the other. The function of the jumpers is as follows: Jumper VID0 PRECAUTIONS: Before connecting or disconnecting the Battery or System Load, set the VID0 and VID1 jumpers to the LO state and put CON7 in the BAT position. Make sure the System Load is less than 3 Amperes continuous current. Make sure the Battery polarity and System Load polarity are connected properly. CON3 The following pins are designated on the P1, Input Power connector: CON7 P1 Pin 1 2 Label Connection AC2 VDD No connect. Do not use. Test point for IC pin VDD. Connect to AC adapter Power ( 5.25V +/- 0.75V) Connect to USB power (5V +/- 0.5V) Test point for IC pin VIN. Connect to common ground. Table 4 – P1 Pins 3 AC1 4 5 6 USB1 USB2 GND VID1 VM Position LO HI LO Connection Disable Discharge Mode. Enable Discharge Mode. USB Low current Mode. (Charger disable when VID0 = 0) HI USB High Current Mode. LO 4.1V Battery terminal voltage HI 4.2V Battery terminal voltage Enables the Headroom IN1 Regulation circuit. OUT Disables the Headroom Regulation circuit. VDD Input Logic pulled up to VDD. VBAT2 Input Logic pulled up to VBAT. Table 5 – Jumper Configuration Either AC1 or USB1 or both may be applied. The ORing circuit will select AC1 if both AC1 and USB1 are applied at the same time. 1 The headroom enable circuit prevents disable switch chatter if the input power is current limited (weak) source. This jumper is normally IN. 2 The Logic is normally referenced to VBAT, but can be referenced to VDD in some cases. This jumper is normally VBAT Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE HOOKUP 6. Remove and reapply the AC1 power source and observe the battery switch from charge to discharge mode. 7. To prevent battery discharge mode change VID1 from LO to HI and VID0 from HI to LO. 8. The HEADROOM CKT jumper should be installed in the IN position if a power supply less than 4.5V is applied to AC1. 9. Other configurations are shown in the LX2201 specification and can be demonstrated by applying the inputs to the appropriate pins on connector P1: USB only – apply power input to USB1. AC adapter and USB – apply AC adapter to AC1 and USB power to USB1. The following is a demonstration scenario that can be used to evaluate the LX2201, using the LX2201 Evaluation board. Directions for hook up (AC adapter only mode): 1. Place jumpers VID0 and VID1 in the LO position. Place the LOGIC PULLUP jumper in the VBAT position. Place the Vm jumper in the 4.1 or 4.2V position depending on the battery chemistry. 2. Connect a 1AH or greater single cell Lithium Ion battery to the Battery Output terminal. 3. If desired, apply a 10 ohm resistor across the Discharge load connector terminals. 4. Apply a 5.25V power supply (>2A) to the P1 AC1 input. 5. To begin charging, change VID0 from LO to HI. + CON7 + - 5.0V USB Power HI R15 C3 Q5 C4 CCP VBAT 4.2V 4.1V OUT D5 R7 CTP CUS LX2201 + VIN VDD D2 C1 Q2 D3 CON3 HI BATTERY OUTPUT R11 D4 P1 + VID1 LO VID0 LO VM AC2 VDD AC1 USB1 USB2 GND - 5.25V AC Adapter - DISCHARGE LOAD 10 VDD - + IN HEADROOM REGULATION CKT R10 R9 R8 LOGIC PULLUP R12 R13 R14 VBAT INTEGRATED PRODUCTS LX2201 USB Li-Ion Battery Charger Figure 3 – LX2201 Evaluation Board Hook up Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 7 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE LX2201 EVALUATION BOARD PRINTED CIRCUIT BOARD LAYOUT CON7 VDD VID1 LO HI VID0 LO HI R11 R15 C3 Q5 C4 CCP VBAT VM 4.2V 4.1V VIN VDD AC2 VDD AC1 USB1 USB2 GND OUT D5 R7 CTP CUS LX2201 + BATTERY OUTPUT D2 C1 Q2 D3 CON3 - DISCHARGE LOAD LOGIC PULLUP - + P1 D4 IN HEADROOM REGULATION CKT R10 R9 R8 R12 R13 R14 VBAT INTEGRATED PRODUCTS LX2201 USB Li-Ion Battery Charger Figure 4 – LX2201 Evaluation Board Copyright © 2002 Rev. 1.2a, 2006-02-24 Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 8 LX2201 EVAL LI-ION BATTERY CHARGER PRODUCT DESIGN GUIDE LX2201 EVALUATION BOARD BILL OF MATERIALS MISCELLANEOUS COMPONENTS Line Item 1 2 3 4 5 6 7 8 9 10 Part Description USB battery Charger Diode, Schottky, 20V, 2A Diode, Schottky, 20V, 1A Diode, LED Green P MOSFET 5.6A PNP Dual matched 3 Pin Header, .100 Jumpers 6 Pin Header, .100 Terminal Lug Manufacturer & Part # MICROSEMI Microsemi Microsemi Microsemi Intl Rectifier Diodes Inc LX2201 B220A-13 UPS5817 UPGLED IRLMS6802 DMMT3906W Case MLP PowerMite 0603 TSOP-6 SOT-363 Reference Designators U1 D2 D3, D4 D5 Q2 Q5 Qty 1 1 2 1 1 1 5 5 1 2 CAPACITORS Line Item Part Description 1 Capacitor, 10µF, 16V, X7R 2 Capacitor, 0.1µF, 16V, X7R Part Description Murata GRM32DR71C106MA01L Murata GRM219R71C104KA01D Case Reference Designators Qty 1210 C1, C3 2 0805 C4, C5 2 Case Reference Designators Qty 0805 0805 0805 0805 0805 0805 0805 0805 R7 R8, R9, R10 R11, R14, R15 R12 R13 RCCP RCUS RCTP 1 3 3 1 1 1 1 1 RESISTORS Line Item 1 2 3 4 5 6 7 8 Part Description Resistor, 470 Ohm Resistor, 47K Resistor, 499K Resistor, 100K Resistor, 576K Resistor, 75K Resistor, 2.49K Resistor, 150K Copyright © 2002 Rev. 1.2a, 2006-02-24 Part Description Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic ERA-6YEB471V ERA-6YEB473V ERJ-6ENF4993V ERJ-6ENF1003V ERJ-6ENF5763V ERJ-6ENF7502V ERJ-6ENF2491V ERJ-6ENF1503V Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 9