rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC Notice: This is not a final specification. Some parametric limits are subject to change. DESCRIPTION PIN CONFIGURATION (TOP VIEW) FEATURES •Built-in 3 wire serial data interface for MCU. •Built-in multiplexer and level magnification circuit with 4 input ports. •Built-in DC-DC converter circuit for PWM function •Built-in two current detection circuits. These circuits can detect charge current and discharge current •ON/OFF control with low power dissipation mode. (Power save) SW PGND OSC GND PS CK DI CS DCDOUT REF IN ADJ Vcc 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 M62255FP The M62255FP is intended to be used a general purpose battery charger control for Note PC. The M62255FP contains the functions which are required for the battery charge control ,on single chip using low peripheral component requirement . The M62255FP can handle battery charge control, monitor battery temperature and prevent from over current and voltage with microcomputer. It contains DC-DC converter circuit which can be used for the feedback control of the charge current and the output voltage. It is the best fit for Smart Battery Charger. 24P2Q-A APPLICATION Note.P.C, Video camera and general battery charger for other digital equipment BLOCK DIAGRAM SW IDET Output Drive circuit Vcc ADJ Vc ISENSE2 + ISENSE2 - DCDOUT Discharge Current Detect Circuit Current control OPAmp PWM Comp ISENSE1 + Charge Current Detect Circuit REF IN ISENSE1 - Vref Output Voltage Detect Circuit OSC OSC Voltage control OPAmp Vref To Internal Circuit Power Save PS 3bit 8bit D-A Converter PGND GND VDET Logic Circuit CK DI CS ( 1 / 12 ) IN1 Vref Multiplexer & Level Magnification Circuit 4bit IN2 IN3 IN4 DOUT Vc VDET IDET ISENSE1 ISENSE1 + IN1 IN2 IN3 IN4 DOUT ISENSE2 ISENSE2 + rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC <DESCRIPTION OF TERMINALS> Pin No. Symbol Function The serial data input pin which used to receive 8-Bit wide serial data DI 7 6 CK The shift clock input pin which input signal from DI pin to 8-Bit shift register by the rising edge of clock signal 8 CS When this pin is "Low", DI pin can receive the data into the 8-Bit shift register. The each bit will be latched at rising edge of the clock signal 15 11 10 19 18 17 16 20 21 13 14 9 23 22 DOUT The voltage output pin for adjusting A-D reference voltage ADJ REF IN The reference voltage input pin of the A-D converter IN1 The A-D converter input pin IN2 IN3 IN4 The A-D converter input pin The charge current sense input pin for high side voltage ISENSE1- The charge current sense input pin for low side voltage ISENSE2+ The discharge current sense input pin for high side voltage ISENSE2- The discharge current sense input pin for low side voltage DCDOUT The discharge current detect circuit output pin VDET IDET The voltage detection input pin VC 1 SW OSC PS Vcc GND PGND 4 3 The A-D converter input pin The A-D converter input pin ISENSE1+ 24 3 5 12 The output pin of the amplified A-D data The current detection input pin This pin is used to make connection with capacitor and resistor which are used for phase compensation The pre-drive pin which used to connect the external Pch Tr The pin used to connect capacitor to determine the frequency of ocelot The control pin of power save mode (H : power save mode, L : normal mode) The power supply pin The ground pin The ground pin of power unit ( 2 / 12 ) rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC <ABSOLUTE MAXIMUM RATINGS> Symbol Parameter Conditions Ratings Unit Vcc Supply voltage 28 V Isw SW drive current 50 mA Vsw SW max. voltage V VPS PS max. voltage Vcc 7 Pd Power dissipation Ta=25°C 950 mW Ta>25°C 9.5 mW/ °C -20 – +75 -40 – +125 °C KTHETER Thermal derating ratio Topr Operating temperature Tstg Storage temperature THERMAL DERATING (MAXIMUM RATING) 1000 POWER DISSIPATION Pd (mW) 950 800 600 400 200 0 0 25 50 75 100 125 AMBIENT TEMPERATURE Ta (°C ) ( 3 / 12 ) V °C rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC PWM All block Block <ELECTRICAL CHARACTERISTICS> Symbol Parameter (Ta=25°C, Vcc=15V) Test condition Vcc Supply voltage 7.5 Icc1 Circuit current 4.0 Icc2 Circuit current at power save Vref Input reference voltage VsatM Main-SW output saturation voltage ISWL SW output leak current PS input voltage VPS=2.0v Charge detection block Level Mag. Max Unit 22 V 7.0 10.0 mA 50 80 µA V 1.2 V -1 1 µA 0.6 -1 5.0 µA 0 µA VISENSE1+ ISENSE1+ input voltage range 2.0 Vcc-0.5 V VISENSE1- ISENSE1- input voltage range 2.0 Vcc-0.5 V VISENSE2+ ISENSE2+ input voltage range 2.0 Vcc+1.5 V 2.0 Vcc+1.5 IDETB Isw=50mA VDET input bias current VISENSE2- ISENSE2- input voltage range VCH Charge voltage of fixed voltage Vref=5.0v, Voltage control data is 4.2v selected at Reset VICH Charge current detection voltage of fixed current Vref=5.0v, Current control data is 160mV selected DNL Differential nonlinearity at 8 bit DAC Vref=5.0v VIN-IN IN input voltage range IIN IN input current VDOUT DOUT output voltage range fosc Oscillation frequency Cosc = 390pF Ioscch Oscillation charge current OSC Typ 5.0 VDET-IN VDET input voltage range Inter Face Limits Min Ioscdis Oscillation discharge current TDUTY Maxmum ON duty 0.9 4.18 4.20 4.22 V V 140 160 180 mV -1 1 LSB 0.3 5 V -100 0 nA 0.5 5 V 70 100 130 KHz -150 -120 -90 µA 20 30 40 µA % 95 Vosch Oscillation output high level 0.85 0.95 1.05 V Voscl Oscillation output low level 0.35 0.4 0.45 V V DIH DI input high level 3.5 6.0 V V DIL DI input low level 0 0.5 V V CSH CS input high level 3.5 6.0 V V CSL CS input low level 0 0.5 V V CKH CK input high level 3.5 6.0 V V CKL CK input low level 0 0.5 V V PSH PS input high level 1.0 V PSL PS input low level 0 ( 4 / 12 ) 1.5 V 0.3 V rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC <DIGITAL DATA FORMAT> MSB Last First DI 8-BIT SHIFT RESISTER D7 CK CS D6 D5 D4 D3 D2 D1 D0 ADDRESS DECODER 4 6 LATCH LATCH LATCH LATCH LATCH LATCH MPX MPX MPX MPX MPX MPX VOLTAGE CURRENT VOLTAGE AMP CONTROL Fine CONTROL SW CONTROL SELECT SW SW A-D INPUT SELECT REFERENCE SELECT <DATA TIMING CHART > (MODEL) LSB DI D0 MSB D1 D2 D3 D4 D5 D6 D7 CK CS <DATA SETTING> Control function Address Data Description D7 D6 D5 D4 D3 D2 D1 D0 RESET 0 0 0 0 - - - - Current control 0 0 0 1 - - - - See Table 1 Voltage control 0 0 1 0 - - - - See Table 2 Voltage fine control 0 0 1 1 - - - - See Table 3 Amp. select 0 1 0 0 - - - - See Table 4 A-D Input select 0 1 0 1 - - - - See Table 5 A-D Reference select 0 1 1 0 - - - - See Table 6 ( 5 / 12 ) A-D Reference voltage = 2.5V Voltage control setting = 4.2V Voltage fine control setting = 0V Current control setting = 20mV LSB rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC <CONTROL DATA> Table 1 ; Current control data D3 0 0 0 0 0 0 0 0 D1 0 0 1 1 0 0 1 1 D2 0 0 0 0 1 1 1 1 D0 0 1 0 1 0 1 0 1 Current control input voltage Current ratio 0V 20mV 40mV 80mV 160mV 240mV 320mV 0 1/16 1/8 1/4 1/2 3/4 1 Trickle • 20mV selected at RESET Table 2 ;Voltage control data D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Table 3 ;Voltage fine control data D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Ref.voltage select 5.0V select 4.84V select 4.68V select 4.52V select 4.36V select 4.20V select 4.04V select 3.88V select 3.72V select 3.56V select 3.40V select 3.24V select 3.08V select 2.92V select 2.76V select 2.60V • 4.20V selected at RESET D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 • 0V selected at RESET • Set-up voltage of Voltage control is fixed by Ref. voltage (at Table2) and fine cntl. voltage (at Table3). Set-up voltage of Voltage control can be fixed at 10mV step between 2.45V and 5.0V. Example1. table 1 table 2 D3 D2 D1 D0 D3 D2 D1 D0 0 1 0 1 1 0 1 0 Set-up voltage; 4.20V(Ref. voltage) - 100mV(fine cntl. voltage) = 4.10V Example2. table 1 table 2 D3 D2 D1 D0 D3 D2 D1 D0 1 0 0 1 1 1 1 1 Set-up voltage; 3.56V(Ref. voltage) - 150mV(fine cntl. voltage) = 3.41V ( 6 / 12 ) fine cntl.voltage select 0V select -10mV select -20mV select -30mV select -40mV select -50mV select -60mV select -70mV select -80mV select -90mV select -100mV select -110mV select -120mV select -130mV select -140mV select -150mV rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC Table 4; Amp select D3 D2 0 0 0 0 1 D1 0 0 1 1 0 D0 0 1 0 1 0 State select Output of Charge Current Detect Amp select Input of Battery Voltage Detect Amp select Output of Battery Voltage Detect Amp select Output of Discharge Current Detect Amp select Output of A/D reference Voltage • Output of Battery Voltage Detect Amp is selected at RESET Table 5; A-D Input select D3 D2 D1 0 0 1 1 D0 0 1 0 1 State select IN1 select IN2 select IN3 select IN4 • IN1 is selected at RESET Table 6; A-D Reference voltage select D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D2 D1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 • 2.50V is selected at RESET ( 7 / 12 ) State select 5.0V select 4.69V select 4.38V select 4.06V select 3.75V select 3.44V select 3.13V select 2.81V select 2.50V select 2.19V select 1.88V select 1.56V select 1.25V select 0.94V select 0.63V select 0.31V rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC BLOCK DESCRIPTION (1) Battery Voltage Detect BLOCK 1 1 ISENSE2 x10 ISENSE2+ ISENSE1 - x10 ISENSE1+ DI Serial Data from MCU CK CS IN1 Serial-Parallel Converter Circuit IN2 IN3 IN4 3 1 5.0V Reference Voltage for A-D Converter 0.31V DOUT to A-D input of MCU Fig.1 Block Diagram of Multiplexer and Level Magnification Circuit Multiplexer and Level Magnification Circuit of M62255 consists from Reference Voltage, 4times amplifier, 10times Amplifier and 4input Multiplexer. When setting the reference voltage correspond to detecting voltage by serial data from MCU, this set voltage supply to reference voltage for A-D converter. The difference between input voltage of IN1 - IN4 and reference voltage is multiplied by 4 at the center of this setting voltage. This multiplied voltage is supplied to A-D input of MCU from DOUT terminal. The resolution of A-D converter of MCU is improved by 2-Bit as against the difference of IN1-IN4 input. ( 8 / 12 ) rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC 4.9V 3.7V To DOUT 2.5V 1.2V 0.3V 1.3V 3.1V 2.8V 2.5V 2.2V Reference Voltage 1.9V 0.1V To DOUT 4times Amplifier input voltage Fig.2 Description of Level Magnification Output voltage of DOUT is fixed as follows; VDOUT = (VIN - Vref) x 4 + Vref (V) ---------------- (1) VDout ; Output voltage of DOUT VIN ; Voltage of IN1 (or IN2,IN3,IN4) Vref ; Reference voltage for A-D converter In Fig.2 Reference Voltage is 2.5V. When Input voltage of IN1 (or IN2,IN3,IN4) is set at 2.8V, the difference between input voltage and Reference Voltage is 0.3V. The difference voltage (0.3V) multiplied by 4 is 1.2V. 1.2V added to Reference Voltage(2.5V) makes 3.7V which is output voltage of VDOUT. The range of output voltage of VDOUT is between 0V and 5V. So in Fig.2 the range of input voltage of IN1(or IN2,IN3,IN4) is between 1.9V and 3.1V. (This range of input voltage is difference from selected Reference Voltage.) (9 / 12 ) rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC Charge Current of Current Detect R is multiplied by 10 and outputted from DOUT. M62255 is for the floating detection type. Current Detect R is connected to + terminal of battery.So M62255 is best fit for SMBus system ,because the common GND can be given between PC system and the charger circuit. To 10times Amplifier Current Detect Circuit Discharge current is detected by the same method as charge current.Detecting discharge current can be used for monitoring the current consumption and the remnant of the battery. ISENSE+ Charge Current Detect R Multiplexer Circuit IN1 - N4 To 4times Amplifier Battery ISENSE - Fig.3 Detector Circuit of Battery Voltage / Charge Current (10 / 12 ) (11 / 12 ) PS 5v Normal 150K GND PS PGND OSC REF IN CS 3 From MCU CK DI M62255 To MCU DOUT IN4 IN3 IN2 IN1 From each Battery Battery 4 Battery 3 Battery 2 From MCU VDET 0.1µ 0.022µ Battery 1 100µ 0.1 200K ISENSE1+ IDET VC ISENSE1- 22µ ChgSW DchgSW E V I T 390p 300 100 SW A 600K ISENSE2+ SW ISENSE2Vcc 0.1 TE A NT 5V Reg AC Adaptor TO System <Application Circuit> rod P w Ne uct MITSUBISHI<Dig./Ana. INTERFACE> M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC rod P w Ne uct TE A NT MITSUBISHI<Dig./Ana. INTERFACE> E V I T M62255FP GENERAL PURPOSE BATTERY CHARGER CONTROL IC PACKAGE OUTLINE (12 / 12 )