FUJITSU MICROELECTRONICS DATA SHEET DS04-27232-3Ea ASSP For Power Management Applications (DC/DC Converter for DSC/Camcorder) 4-ch DC/DC Converter IC MB39A102 DESCRIPTION The MB39A102 is a 4-channel DC/DC converter IC using pulse width modulation (PWM). This IC is ideal for up conversion, down conversion, and up/down conversion. 4ch is built in TSSOP-30P/BCC-32P package. Each channel can be controlled, and soft-start. This is an ideal power supply for high-performance portable devices such as digital still cameras. FEATURES * * * * * * * * * Supports for down-conversion and up/down Zeta conversion (CH1 to CH3) Supports for up-conversion and up/down Sepic conversion (CH4) Power supply voltage range : 2.5 V to 11 V Reference voltage : 2.0 V 1 % Error amplifier threshold voltage : 1.24 V 1.5 % Built-in totem-pole type output for MOS FET Built-in soft-start circuit without load dependence High-frequency operation capability : 1.5 MHz (Max) External short-circuit detection capability by -INS terminal PACKAGES 30-pin plastic TSSOP 32-pad plastic BCC (FPT-30P-M04) (LCC-32P-M15) Copyright(c)2005-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2005.11 MB39A102 PIN ASSIGNMENTS (TOP VIEW) CS2 1 30 CS1 -INE2 2 29 -INE1 FB2 3 28 FB1 DTC2 4 27 DTC1 VCC 5 26 VCCO CTL 6 25 OUT1 VREF 7 24 OUT2 RT 8 23 OUT3 CT 9 22 OUT4 GND 10 21 GNDO CSCP 11 20 -INS DTC3 12 19 DTC4 FB3 13 18 FB4 -INE3 14 17 -INE4 CS3 15 16 CS4 (FPT-30P-M04) (Continued) 2 MB39A102 (Continued) CS2 CS1 -INE1 FB1 VCC -INE2 1 FB2 N.C. DTC2 (TOP VIEW) (Penetration diagram from surface) 32 31 30 29 28 27 26 23 OUT1 VREF 4 22 OUT2 RT 5 21 OUT3 CT 6 20 OUT4 GND 7 19 GNDO CSCP 8 18 -INS N.C. 9 17 DTC4 10 11 12 13 14 15 16 FB4 3 -INE4 CTL CS4 VCCO CS3 24 -INE3 2 FB3 DTC1 DTC3 25 (LCC-32P-M15) 3 MB39A102 PIN DESCRIPTION Block CH1 CH2 CH3 CH4 Pin No. Symbol I/O 25 DTC1 I Dead time control terminal 28 26 FB1 O Error amplifier output terminal 29 27 -INE1 I Error amplifier inverted input terminal 30 28 CS1 Soft-start capacitor connection terminal 25 23 OUT1 O Output terminal 4 32 DTC2 I Dead time control terminal 3 31 FB2 O Error amplifier output terminal 2 30 -INE2 I Error amplifier inverted input terminal 1 29 CS2 Soft-start capacitor connection terminal 24 22 OUT2 O Output terminal 12 10 DTC3 I Dead time control terminal 13 11 FB3 O Error amplifier output terminal 14 12 -INE3 I Error amplifier inverted input terminal 15 13 CS3 Soft-start capacitor connection terminal 23 21 OUT3 O Output terminal 19 17 DTC4 I Dead time control terminal 18 16 FB4 O Error amplifier output terminal 17 15 -INE4 I Error amplifier inverted input terminal 16 14 CS4 Soft-start capacitor connection terminal 22 20 OUT4 O Output terminal 9 6 CT Triangular wave frequency setting capacitor connection terminal 8 5 RT Triangular wave frequency setting resistor connection terminal 6 3 CTL I 11 8 CSCP 20 18 -INS I 26 24 VCCO Output block power supply terminal 5 2 VCC Power supply terminal 7 4 VREF O Reference voltage output terminal 21 19 GNDO Output block ground terminal 10 7 GND Ground terminal TSSOP BCC 27 OSC Control Power 4 Descriptions Power supply and control terminal Short-circuit detection circuit capacitor connection terminal Short-circuit detection comparator inverted input terminal MB39A102 BLOCK DIAGRAM Threshold voltage accuracy 1.5% 29 -INE1 Error VREF 12 A Amp1 - + CS1 30 + 1.24 V L priority PWM +Comp.1 + - CH1 26 VCCO Drive1 Pch 25 OUT1 L priority FB1 28 IO = 130 mA at VCCO = 4 V DTC1 27 Threshold voltage accuracy 1.5% -INE2 2 Error VREF 12 A Amp2 - + CS2 1 + 1.24 V CH2 L priority PWM +Comp.2 + - Drive2 Pch 24 OUT2 L priority FB2 3 IO = 130 mA at VCCO = 4 V DTC2 4 Threshold voltage accuracy 1.5% -INE3 14 Error VREF 12 A Amp3 - + CS3 15 + 1.24 V CH3 L priority PWM +Comp.3 + - Drive3 Pch 23 OUT3 L priority FB3 13 DTC3 12 IO = 130 mA at VCCO = 4 V Threshold voltage accuracy 1.5% 17 -INE4 Error VREF 12 A Amp4 - + CS4 16 + 1.24 V CH4 L priority PWM +Comp.4 + - Drive4 Nch L priority FB4 18 DTC4 19 21 GNDO IO = 130 mA at VCCO = 4 V VREF 83 k -INS 20 1V SCP Comp. - + H: at SCP SCP Error Amp Power Supply SCP Comp. Power Supply H:UVLO release CSCP 11 UVLO OSC Error Amp Reference bias Power 0.9 V Accuracy 0.4 V 1% 5 VCC 1.24 V VREF VR1 ON/OFF CTL 2.0 V 8 9 RT CT 22 OUT4 7 VREF 10 GND 6 CTL H : ON (Power/ ON) L : OFF (Standby mode) VTH = 1.4 V 5 MB39A102 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Power supply voltage VCC Rating Condition Unit Min Max VCC, VCCO terminals 12 V Output current IO OUT1 to OUT4 terminals 20 mA Output peak current IOP OUT1 to OUT4 terminals Duty 5% (t = 1/fOSCxDuty) 400 mA Power dissipation PD Ta +25 C (TSSOP-30P) 1390* mW Ta +25 C (BCC-32P) 980* mW -55 +125 C Storage temperature TSTG * : The packages are mounted on the epoxy board (10 cm x 10 cm). WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Condition Value Min Typ Max Unit Power supply voltage VCC VCC, VCCO terminals 2.5 4 11 V Reference voltage output current IREF VREF terminal -1 0 mA -INE1 to -INE4 terminals 0 VCC - 0.9 V -INS terminal 0 VREF V VDTC DTC1 to DTC4 terminals 0 VREF V VCTL CTL terminal 0 11 V OUT1 to OUT4 terminals -15 +15 mA * 100 500 1500 kHz Input voltage Control input voltage Output current VINE IO Oscillation frequency fOSC Timing capacitor CT 39 100 560 pF Timing resistor RT 11 24 130 k Soft-start capacitor CS 0.1 1.0 F CS1 to CS4 terminals Short detection capacitor CSCP 0.1 1.0 F Reference voltage output capacitor CREF 0.1 1.0 F Ta -30 +25 +85 C Operating ambient temperature * : See " SETTING THE TRIANGULAR OSCILLATION FREQUENCY". Note : Pin numbers referred after this part are present on TSSOP-30P PKG. WARNING: The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device's electrical characteristics are warranted when the device is operated within these ranges. Always use semiconductor devices within their recommended operating condition ranges. Operation outside these ranges may adversely affect reliability and could result in device failure. No warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. Users considering application outside the listed conditions are advised to contact their representatives beforehand. 6 MB39A102 ELECTRICAL CHARACTERISTICS (VCC = VCCO = 4 V, Ta = +25 C) Error amplifier block [Error Amp1 to Error Amp4] SoftUnder Triangular Short comparator start voltage lockout wave oscillator detection block block protection circuit block [OSC] [SCP] [CS] block [UVLO] Reference voltage block [Ref] Parameter Symbol Pin No Conditions Output voltage VREF 7 Output voltage temperature variation VREF/ VREF 7 Ta = -30 C to +85 C Input stability Line 7 Load stability Load Threshold voltage Value Unit Min Typ Max 1.98 2.00 2.02 V 0.5* % VCC = 2.5 V to 11 V -10 +10 mV 7 VREF = 0 mA to -1 mA -10 +10 mV VTH 25 VCC = 1.7 1.8 1.95 V Hysteresis width VH 25 0.05 0.1 0.2 V Threshold voltage VTH 11 0.65 0.70 0.75 V Input source current ICSCP 11 -1.4 -1.0 -0.6 A Reset voltage VRST 25 VREF = 1.5 1.7 1.9 V Oscillation frequency fOSC 22, 23, 24, 25 CT = 100 pF, RT = 24 k 450 500 550 kHz fOSC/ fOSC 22, 23, 24, 25 Ta = -30 C to +85 C 1* % Charge current ICS 1, 15, 16, 30 CS1 to CS4 = 0 V -16 -12 -8 A Threshold voltage VTH 3, 13, 18, 28 FB1 to FB4 = 0.65 V 1.222 1.240 1.258 V Input bias current IB 2, 14, 17, 29 -INE1 to -INE4 = 0 V -120 -30 nA Voltage gain AV 3, 13, 18, 28 DC 100* dB Frequency bandwidth BW 3, 13, 18, 28 AV = 0 dB 1.6* MHz VOH 3, 13, 18, 28 1.7 1.9 V VOL 3, 13, 18, 28 40 200 mV ISOURCE 3, 13, 18, 28 FB1 to FB4 = 0.65 V -2 -1 mA ISINK 3, 13, 18, 28 FB1 to FB4 = 0.65 V 150 200 A Frequency temperature variation Output voltage Output source current Output sink current (Continued) 7 MB39A102 (Continued) (VCC = VCCO = 4 V, Ta = +25 C) General Control block [CTL] Short detection comparator block [SCP Comp.] Output block [Drive1 to Drive4] PWM comparator block [PWM Comp.1 to PWM Comp.4] Parameter Pin No. VT0 22, 23, 24, 25 VT100 Conditions Value Unit Min Typ Max Duty cycle = 0 % 0.3 0.4 V 22, 23, 24, 25 Duty cycle = 100 % 0.9 1.0 V IDTC 4, 12, 19, 27 DTC1 to DTC4 = 0.4 V -2.0 -0.6 A ISOURCE 22, 23, 24, 25 Duty 5 % (t = 1/fOSCxDuty) OUT1 to OUT4 = 0 V -130 -75 mA Output sink current ISINK 22, 23, 24, 25 Duty 5 % (t = 1/fOSCxDuty) OUT1 to OUT4 = 4 V 75 120 mA Output ON resistance ROH 22, 23, 24, 25 OUT1 to OUT4 = -15 mA 18 27 ROL 22, 23, 24, 25 OUT1 to OUT4 = 15 mA 18 27 Threshold voltage VTH 25 0.97 1.00 1.03 V Input bias current IB 20 -INS = 0 V -29 -24 -21 A VIH 6 IC Active mode 1.7 11 V VIL 6 IC Standby mode 0 0.8 V ICTLH 6 CTL = 3 V 5 30 60 A ICTLL 6 CTL = 0 V 1 A ICCS 5 CTL = 0 V 0 2 A ICCSO 26 CTL = 0 V 0 2 A ICC 5 CTL = 3 V 2.1 4.5 mA Threshold voltage Input current Output source current CTL input voltage Input current Standby current Power supply current *: Standard design value. 8 Symbol MB39A102 TYPICAL CHARACTERISTICS Power Supply Current vs. Power Supply Voltage Reference Voltage vs. Power Supply Voltage 5 Ta = +25 C CTL = 3 V Reference voltage VREF (V) Power supply current ICC (mA) 5 4 3 2 1 0 Ta = +25 C CTL = 3 V VREF= 0 mA 4 3 2 1 0 0 2 4 6 8 10 12 0 2 Power supply voltage VCC (V) 4 6 8 10 12 Power supply voltage VCC (V) Reference Voltage vs. Operating Ambient Temperature 2.05 VCC = 4 V CTL = 3 V VREF= 0 mA Reference voltage VREF (V) 2.04 2.03 2.02 2.01 2.00 1.99 1.98 1.97 1.96 1.95 -40 -20 0 20 40 60 80 100 Operating ambient temperature Ta (C) CTL terminal Current vs. CTL terminal Voltage Reference Voltage vs. CTL terminal Voltage Ta = +25 C VCC = 4 V VREF= 0 mA CTL = 3 V 4 3 2 1 0 0 2 4 6 8 10 CTL terminal voltage VCTL (V) 12 200 CTL terminal current ICTL (A) Reference voltage VREF (V) 5 Ta = +25 C VCC = 4 V 180 160 140 120 100 80 60 40 20 0 0 2 4 6 8 10 12 CTL terminal voltage VCTL (V) (Continued) 9 MB39A102 Triangular Wave Oscillation Frequency vs. Timing Resistor Ta = +25 C VCC = 4 V CTL = 3 V 1000 100 CT = 560 pF CT = 39 pF CT = 100 pF CT = 220 pF 10000 Triangular wave oscillation frequency fOSC (kHz) Triangular wave oscillation frequency fOSC (kHz) 10000 Triangular Wave Oscillation Frequency vs. Timing Capacitor 1000 100 10 RT = 130 k RT = 11 k RT = 24 k RT = 56 k 10 1 10 100 1000 Timing resistor RT (k) 1.00 Upper 0.90 0.80 0.70 0.60 0.50 Lower 0.40 0.30 0.20 0 200 400 1000 10000 1.20 Ta = +25 C VCC = 4 V CTL = 3 V RT = 24 k 1.10 100 Triangular Wave Upper and Lower Limit Voltage vs. Operating Ambient Temperature Triangular wave upper and lower limit voltage VCT (V) 1.20 10 Timing capacitor CT (pF) Triangular Wave Upper and Lower Limit Voltage vs. Triangular Wave Oscillation Frequency Triangular wave upper and lower limit voltage VCT (V) Ta = +25 C VCC = 4 V CTL = 3 V 600 800 1000 1200 1400 1600 Triangular wave oscillation frequency fOSC (kHz) VCC = 4 V 1.10 CTL = 3 V 1.00 RT = 24 k CT = 100 pF 0.90 Upper 0.80 0.70 0.60 0.50 Lower 0.40 0.30 0.20 -40 -20 0 20 40 60 80 100 Operating ambient temperature Ta ( C) Triangular wave oscillation frequency fOSC (kHz) Triangular Wave Oscillation Frequency vs. Operating ambient Temperature 560 VCC = 4 V CTL = 3 V RT = 24 k CT = 100 pF 540 520 500 480 460 440 -40 -20 0 20 40 60 80 100 Operating ambient temperature Ta ( C) (Continued) 10 MB39A102 (Continued) Ta = +25 C 180 VCC = 4 V 40 240 k AV 30 20 90 10 0 0 -10 -20 -90 -30 -40 Phase (deg) Error amplifier voltage gain AV (dB) Error Amplifier Voltage Gain, Phase vs. Frequency 10 k 1 F + 2.4 k IN -INE1 29 - 30 CS1 10 k 1.5 V 1k 10 k 100 k 1M OUT 1.24 V Error Amp1 the same as other channels -180 100 28 + + 10 M Frequency f (Hz) Power Dissipation vs. Operating Ambient Temperature (BCC-32P) Power Dissipation vs. Operating Ambient Temperature (TSSOP-30P) Power dissipation PD (mW) Power dissipation PD (mW) 1600 1400 1390 1200 1000 800 600 400 200 0 -40 -20 0 20 40 60 80 100 Operating ambient temperature Ta ( C) 1000 980 800 600 400 200 0 -40 -20 0 20 40 60 80 100 Operating ambient temperature Ta ( C) 11 MB39A102 FUNCTIONS 1. DC/DC Converter Functions (1) Reference voltage block (Ref) The reference voltage circuit generates a temperature-compensated reference voltage (2.0 V Typ) from the voltage supplied from the VCC terminal (pin 5). The voltage is used as the reference voltage for the IC's internal circuitry. The reference voltage can supply a load current of up to 1 mA to an external device through the VREF terminal (pin 7). (2) Triangular-wave oscillator block (OSC) The triangular wave oscillator incorporates a timing capacitor and a timing resistor connected respectively to the CT terminal (pin 9) and RT terminal (pin 8) to generate triangular oscillation waveform amplitude of 0.4 V to 0.9 V. The triangular waveforms are input to the PWM comparator in the IC. (3) Error amplifier block (Error Amp1 to Error Amp4) The error amplifier detects the DC/DC converter output voltage and outputs PWM control signals. In addition, an arbitrary loop gain can be set by connecting a feedback resistor and capacitor from the output terminal to inverted input terminal of the error amplifier, enabling stable phase compensation to the system. Also, it is possible to prevent rush current at power supply start-up by connecting a soft-start capacitor with the CS1 terminal (pin 30) to CS4 terminal (pin 16) while are the non-inverted input terminal for Error Amp. The use of Error Amp for soft-start detection makes it possible for a system to operate on a fixed soft-start time that is independent of the output load on the DC/DC converter. (4) PWM comparator block (PWM Comp.1 to PWM Comp.4) The PWM comparator is a voltage-to-pulse width modulator that controls the output duty depending on the input/ output voltage. The output transistor turns on while the error amplifier output voltage and DTC voltage remain higher than the triangular wave voltage. (5) Output block (Drive1 to Drive4) The output block is in the totem pole configuration, capable of driving an external P-channel MOS FET (channels 1 to 3), and N-channel MOS FET (channel 4). 12 MB39A102 2. Channel Control Function The main or each channel is turned on and off depending on the voltage levels at the CTL terminal (pin 6), CS1 terminal (pin 30), CS2 terminal (pin 1), CS3 terminal (pin 15), and CS4 terminal (pin 16). Channel On/Off Setting Conditions CTL CS1 CS2 CS3 CS4 Power CH1 CH2 CH3 CH4 L * * * * OFF OFF OFF OFF OFF H H H H H H GND High-Z GND GND GND High-Z GND GND High-Z GND GND High-Z GND GND GND High-Z GND High-Z GND GND GND GND High-Z High-Z ON ON ON ON ON ON OFF ON OFF OFF OFF ON OFF OFF ON OFF OFF ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON ON *: Undefined 3. Protective Functions (1) Timer-latch short-circuit protection circuit (SCP, SCP Comp.) The short-circuit detection comparator in each channel detects the output voltage level of Error Amp, and if any channel output voltage of Error Amp reaches the short-circuit detection voltage, the timer circuits are actuated to start charging the external capacitor CSCP connected to the CSCP terminal (pin 11). When the capacitor (CSCP) voltage reaches about 0.7 V, the circuit is turned off the output transistor and sets the dead time to 100 %. In addition, the short-circuit detection from external input is capable by using -INS terminal (pin 20) on shortcircuit detection comparator (SCP Comp.) . To release the actuated protection circuit, either the power supply turn off and on again or set the CTL terminal (pin 6) to the "L" level to lower the VREF terminal (pin 7) voltage to 1.5 V (Min) or less. (See "SETTING TIME CONSTANT FOR TIMER-LATCH SHORT-CIRCUIT PROTECTION CIRCUIT".) (2) Under voltage lockout protection circuit (UVLO) The transient state or a momentary decrease in supply voltage, which occurs when the power supply is turned on, may cause the IC to malfunction, resulting in breakdown or degradation of the system. To prevent such malfunctions, under voltage lockout protection circuit detects a decrease in internal reference voltage with respect to the power supply voltage, turns off the output transistor, and sets the dead time to 100% while holding the CSCP terminal (pin 11) at the "L" level. The circuit restores the output transistor to normal when the supply voltage reaches the threshold voltage of the under voltage lockout protection circuit. PROTECTION CIRCUIT OPERATING FUNCTION TABLE This table refers to output condition when protection circuit is operating. Operating circuit OUT1 OUT2 OUT3 OUT4 Short-circuit protection circuit H H H L Under voltage lockout protection circuit H H H L 13 MB39A102 SETTING THE OUTPUT VOLTAGE * CH1 to CH4 VO R1 - R2 -INEx Error Amp + + VO (V) = 1.24 R2 (R1 + R2) 1.24 V CSx x : Each channel No. SETTING THE TRIANGULAR OSCILLATION FREQUENCY The triangular oscillation frequency is determined by the timing capacitor (CT) connected to the CT terminal (pin 9), and the timing resistor (RT) connected to the RT terminal (pin 8). Moreover, it shifts more greatly than the calculated values according to the constant of timing resistor (RT) when the triangular wave oscillation frequency exceeds 1 MHz. Therefore, set it referring to "Triangular Wave Oscillation Frequency vs. Timing Resistor" and "Triangular Wave Oscillation Frequency vs. Timing Capacitor" in " TYPICAL CHARACTERISTICS". Triangular oscillation frequency : fOSC fOSC (kHz) =: 14 1200000 CT (pF) x RT (k) MB39A102 SETTING THE SOFT-START TIME To prevent rush currents when the IC is turned on, you can set a soft-start by connecting soft-start capacitors (CS1 to CS4 ) to the CS1 terminal (pin 30) to the CS4 terminal (pin 16), respectively. Setting each CTLx from "H" to "L" switches to charge the external soft-start capacitors (CS1 to CS4) connected to the CS1 terminal (pin 30) to CS4 terminal (pin 16) at 12 A. The error amplifier output (FB1 to FB4) is determined by comparison between the lower one of the potentials at two non-inverted input terminals (1.24 V, CS terminal voltages) and the inverted input terminal voltage (-INE1 to-INE4). The FB terminal voltage during the soft-start period (CS terminal voltage < 1.24 V) is therefore determined by comparison between the -INE terminal and CS terminal voltages. The DC/DC converter output voltage rises in proportion to the CS terminal voltage as the soft-start capacitor connected to the CS terminal is charged. The soft-start time is obtained from the following formula: Soft-start time: ts (time to output 100%) ts (s) =: 0.103 x CSX (F) * Soft-Start Circuit VO VREF 12 A R1 -INEx R2 L priority Error Amp CH ON/OFF signal L : ON, H : OFF - CSx + + 1.24 V CTLx CSx FBx UVLO x : Each channel No. 15 MB39A102 TREATMENT WITHOUT USING CS TERMINAL When not using the soft-start function, open the CS1 terminal (pin 30) , the CS2 terminal (pin 1) , the CS3 terminal (pin 15) , the CS4 terminal (pin 16) . * Without Setting Soft-Start Time "OPEN" "OPEN" 1 CS2 CS1 30 "OPEN" "OPEN" 15 16 CS3 CS4 16 MB39A102 SETTING TIME CONSTANT FOR TIMER-LATCH SHORT-CIRCUIT PROTECTION CIRCUIT Each channel uses the short-circuit detection comparator (SCP) to always compare the error amplifiers output level to the reference voltage. While DC/DC converter load conditions are stable on all channels, the short-circuit detection comparator output remains at "L" level, and the CSCP terminal (pin 11) is held at "L" level. If the load condition on a channel changes rapidly due to a short-circuit of the load, causing the output voltage to drop, the output of the short-circuit detection comparator on that channel goes to "H" level. This causes the external short-circuit protection capacitor CSCP connected to the CSCP terminal (pin 11) to be charged at 1 A. Short-circuit detection time (tCSCP) tCSCP (s) =: 0.70 x CSCP (F) When the capacitor CSCP is charged to the threshold voltage (VTH =: 0.70 V), the latch is set and the external FET is turned off (dead time is set to 100%). At this point, the latch input is closed and the CSCP terminal (pin 11) is held at "L" level. In addition, the short-circuit detection from external input is capable by using -INS terminal (pin 20) on the shortcircuit detection comparator (SCP Comp.) . The short-circuit detection operation starts when -INS terminal voltage is less than threshold voltage (VTH =: 1 V) . When the power supply is turn on back or VREF terminal (pin 7) voltage is less than 1.5 V (Min) by setting CTL terminal (pin 6) to "L" level, the latch is released. * Timer-latch short-circuit protection circuit VO FBx R1 - -INEx Error Amp + R2 1.24 V VREF 83 k -INS - 20 SCP Comp. + SCP 1V + + + + - 1.15 V 1 A To each channel Drive CTL CSCP 11 CSCP VREF S R Latch UVLO x : Each channel No. 17 MB39A102 TREATMENT WITHOUT USING CSCP TERMINAL When not using the timer-latch short-circuit protection circuit, connect the CSCP terminal (pin 11) to GND (pin 10) with the shortest distance. * Treatment without using CSCP 18 10 GND 11 CSCP MB39A102 SETTING THE DEAD TIME When the device is set for step-up inverted output based on the step-up or step-up/down Zeta conversion, stepup/down Sepic conversion or flyback conversion, the FB terminal voltage may reach and exceed the triangular wave voltage due to load fluctuation. If this is the case, the output transistor is fixed to a full-ON state (ON duty = 100 %). To prevent this, set the maximum duty of the output transistor. To set it, set the voltage at the DTC terminal by applying a resistive voltage divider to the VREF voltage as shown below. When the DTC terminal voltage is higher than the triangular wave voltage, the output transistor is turned on. The maximum duty calculation formula assuming that triangular wave amplitude =: 0.5 V and triangular wave lower voltage =: 0.4 V is given below. DUTY (ON) Max=: Vdt - 0.4 V x 100 (%) , Vdt = 0.5 V Rb Ra + Rb x VREF When the DTC terminal is not used, connect it directly to the VREF terminal (pin 7) as shown below (when no dead time is set). * When using DTC to set dead time Ra DTCx Rb 7 VREF Vdt x : Each channel No. * When no dead time is set DTCx 7 VREF x : Each channel No. 19 MB39A102 OPERATION EXPLANATION WHEN CTL TURNING ON AND OFF When CTL is turned on, internal reference voltage VR and VREF generate. When VREF exceeds threshold voltage (VTH) of UVLO (under voltage lockout protection circuit), UVLO are released, and the operation of output Drive circuit of each channel becomes possible. When CTL is off, VR and VREF fall. When VREF decreases and UVLO fall below each reset voltage (VRST), UVLO operates and output Drive circuit of each channel is forcibly done the operation stop, and makes the output off state. When period to reaching to 2.0 V by VREF voltage after UVLO are released by turning on CTL (refer to a in "* Timing Chart"), and VREF decreases from 2.0 V after turning off CTL and the period until do the operation of UVLO (refer to a' in "* Timing Chart"), the bias voltage and the bias current in IC do not reach a prescribed value because VREF which is the reference voltage does not reach 2.0 V, and the speed of response for IC has decreased. Note : Moreover, when it does the turning on and off of the input sudden change, the load sudden change, IC cannot conform and the output might overshoot. Therefore, impress the voltage to CTL terminal by which the VREF terminal voltage never stays in the abovementioned period. * CTL Block Equivalent Circuit H : at SCP To CH1 to CH4 output Drive circuit H : Possible to operate L : Forcibly stop SCP To CS1 to CS4 charge/ discharge circuit H : Possible to charge L : Forcibly discharge UVLO H : UVLO release ErrorAmp Reference 1.24 V bias 5 VREF 7 VREF 20 VR Power ON/OFF CTL 6 VCC CTL MB39A102 * Timing Chart Error Amp Reference voltage VR VR = 1.24 V (Typ) VTH VREF = 2.00 V (Typ) Reference voltage VREF a UVLO UVLO release VRST a' Valid UVLO CH1 to CH4 output Drive circuit control CTL terminal voltage Possible operate Fixed full-off Fixed full-off 1.5 V 0.2 V (Typ) 21 MB39A102 I/O EQUIVALENT CIRCUIT Reference voltage block Control block Soft-start block VREF (2.0 V) VCC 5 1.24 V ESD protection element + - CTL 6 67 k 7 VREF ESD protection element CSx 77.3 k 104 k ESD protection element 124 k GND GND 10 GND Triangular wave oscillator block (CT) Triangular wave oscillator block (RT) Short detection block VREF (2.0 V) VREF (2.0 V) VREF (2.0 V) 0.7 V 2 k + - 11 CSCP CT 9 8 RT GND GND GND Short detection comparator block Error amplifier block (CH1 to CH4) VCC VCC VREF (2.0 V) -INEx VREF (2.0 V) -INS 20 CSx 83 k (1 V) FBx 1.24 V GND GND PWM comparator block (CH1 to CH4) VCC FBx Output block (CH1 to CH4) VCCO 26 OUTx CT DTCx GNDO 21 GND x : Each channel No. 22 MB39A102 APPLICATION EXAMPLE VIN (2.5 V to 6 V) R13R14 -INE1 29 A 3.3 k12 k 15 k R15 CS1 30 C20 R16 0.1 F 2 k C21 28 0.047 F FB1 27 DTC1 -INE2 R19R20 2 B 2.4 k43 k 15 k R21 CS2 1 C22 R22 0.1 F 2 k C23 0.047 F FB2 3 R23 33 k 4 DTC2 R24 20 k -INE3 R25R26 14 C 2.4 k43 k 15 k R27 CS3 15 C24 R28 0.1 F 2 k C25 0.047 F FB3 13 R29 33 k 12 DTC3 R30 20 k R31R32 -INE4 17 D 3 k22 k 15 k R33 CS4 16 C26 R34 0.1 F 1 k C27 0.1 F FB4 18 R35 19 30 k DTC4 R36 -INS 18 k 20 VCCO 26 VD C1 0.1 F 25 OUT1 CH1 L2 22 H C4 1 F C6 4.7 F D1 VG VO2-1 15 V, 10 mA B D2 Q2 T1 C9 VO2-2 2.2 F 5 V, 50 mA D3 C10 2.2 F OUT2 24 CH2 VO1 2.5 V, 250 mA A Q1 C8 1 F D4 VO2-3 -7.5 V, -5 mA C11 2.2 F OUT3 23 CH3 VO3-1 15 V, 10 mA C D5 Q4 C14 2.2 F D6 C13 1 F OUT4 22 GNDO 21 CH4 T2 VC D L3 C18 10 H R12 180 C16 C17 4700 pF 1 F Short detection signal (L : at short) CSCP 11 VCC 5 C28 0.01 F C15 2.2 F 4.7 F D7 VO3-2 5 V, 50 mA VO4 3.3 V, 500 mA C19 10 F L4 15 H VB C2 0.1 F 6 CTL 8 RT R37 24 k 9 CT 7 fOSC Accuracy 10% C29 100 pF 10 VREF C30 0.1 F GND H : ON (Power ON) L : OFF (Standby mode) VTH = 1.4 V 23 MB39A102 PARTS LIST COMPONENT ITEM SPECIFICATION VENDOR PARTS NO. Q1, Q2, Q4 Q5 Pch FET NPN Tr VDS = -20 V, ID = -1.5 A VCEO = 15 V, IC = 3 A SANYO SANYO MCH3309 CPH3206 D1, D7 D2 to D6 Diode Diode VF = 0.4 V (Max) , at IF = 1 A VF = 0.55 V (Max) , at IF = 0.5 A SANYO SANYO SBS004 SB05-05CP L2 L3 L4 Inductor Inductor Inductor 22 H 10 H 15 H 0.63 A, 160 m 0.94 A, 67 m 0.76 A, 120 m TDK TDK TDK RLF5018T-220MR63 RLF5018T-100MR94 RLF5018T-150MR76 T1, T2 Transformer SUMIDA CLQ52 5388-T095 C1, C2 C4, C8, C13 C6 C9 to C11 C14, C15 C16 C17 C18 C19 C20, C22, C24 C21, C23, C25 C26, C27, C30 C28 C29 Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser 0.1 F 1 F 4.7 F 2.2 F 2.2 F 4700 pF 1 F 4.7 F 10 F 0.1 F 0.047 F 0.1 F 0.01 F 100 pF 50 V 25 V 10 V 16 V 16 V 50 V 25 V 10 V 6.3 V 50 V 50 V 50 V 50 V 50 V TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK C1608JB1H104K C3216JB1E105K C3216JB1A475M C3216JB1C225K C3216JB1C225K C1608JB1H472K C3216JB1E105K 3216JB1A475M C3216JB0J106M C1608JB1H104K C1608JB1H473K C1608JB1H104K C1608JB1H103K C1608CH1H101J R12 R13 R14 R15, R21, R27 R16, R22, R28 R19, R25 R20, R26 R23, R29 R24, R30 R31 R32 R33 R34 R35 R36 R37 Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor 180 3.3 k 12 k 15 k 2 k 2.4 k 43 k 33 k 20 k 3 k 22 k 15 k 1 k 30 k 18 k 24 k 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % 0.5 % ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm RR0816P-181-D RR0816P-332-D RR0816P-123-D RR0816P-153-D RR0816P-202-D RR0816P-242-D RR0816P-433-D RR0816P-333-D RR0816P-203-D RR0816P-302-D RR0816P-223-D RR0816P-153-D RR0816P-102-D RR0816P-303-D RR0816P-183-D RR0816P-243-D Note : SANYO : SANYO Electric Co., Ltd. TDK : TDK Corporation SUMIDA : SUMIDA Electric Co., Ltd. ssm : SUSUMU Co., Ltd. 24 MB39A102 REFERENCE DATA TOTAL Efficiency vs. Input Voltage 100 TOTAL efficiency (%) Ta = +25 C VO1 = 2.5 V, 250 mA VO2-1 = 15 V, 10 mA VO2-2 = 5 V, 50 mA VO2-3 = -7.5 V, -5 mA VO3-1 = 15 V, 10 mA VO3-2 = 5 V, 50 mA VO4 = 3.3 V, 500 mA fOSC = 500 kHz At VIN =: 2.59 V CH1stops by short-circuit detection operation 95 90 85 80 75 70 65 60 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 Input voltage VIN (V) Each CH Efficiency vs. Input Voltage 100 Each CH efficiency (%) Ta = +25 C CH1 95 90 85 80 CH4 CH2 CH3 75 Note : Only concerned CH is ON Include external SW Tr operating current CH2 and CH3 are discontinuance. 70 65 60 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 Input voltage VIN (V) (Continued) 25 MB39A102 Conversion Efficiency vs. Load Current (CH1) 100 Conversion efficiency (%) CH2 to CH4 : OFF 95 90 IO1 20 mA : discontinuance mode 85 80 75 70 Ta = +25 C VIN = 3.6 V 65 60 0 50 100 150 200 250 300 Load current IO1 (mA) Conversion Efficiency vs. Load Current (CH2, CH3) Conversion efficiency (%) 100 Ta = +25 C VIN = 3.6 V VO2-1 = 10 mA VO2-3 = -5 mA VO3-1 = 10 mA 95 90 85 CH2 CH1, 3, 4 : OFF 80 CH3 75 CH1, 2, 4 : OFF 70 65 Note : CH2 and CH3 are discontinuance mode. 60 0 10 20 30 40 50 Load current lO2-2, IO3-2 (mA) (Continued) 26 MB39A102 Conversion Efficiency vs. Load Current (CH4) Conversion efficiency (%) 100 Ta = +25 C VIN = 3.6 V 95 90 CH1 to CH3 : OFF 85 80 IO4 175 mA : discontinuance mode 75 70 65 60 0 100 200 300 400 500 600 Load current IO4 (mA) (Continued) 27 MB39A102 (Continued) Switching Wave Form (CH1) Ta = +25 C VIN = 4 V CTL = 5 V VG (V) 4 2 0 VD (V) 4 2 0 0 1 2 3 4 5 6 7 8 9 10 t (s) Switching Wave Form (CH4) VB (V) 2 Ta = +25 C VIN = 4 V CTL = 5 V 1 0 -1 VC (V) 10 5 0 0 28 1 2 3 4 5 6 7 8 9 10 t (s) MB39A102 USAGE PRECAUTION * Printed circuit board ground lines should be set up with consideration for common impedance. * Take appropriate static electricity measures. * Containers for semiconductor materials should have anti-static protection or be made of conductive material. * After mounting, printed circuit boards should be stored and shipped in conductive bags or containers. * Work platforms, tools, and instruments should be properly grounded. * Working personnel should be grounded with resistance of 250 k to 1 M between body and ground. * Do not apply negative voltages. The use of negative voltages below -0.3 V may create parasitic transistors on LSI lines, which can cause abnormal operation. ORDERING INFORMATION Part number Package MB39A102PFT 30-pin plastic TSSOP (FPT-30P-M04) MB39A102PV3 32-pad plastic BCC (LCC-32P-M15) Remarks 29 MB39A102 PACKAGE DIMENSIONS 30-pin plastic TSSOP (FPT-30P-M04) 7.800.10(.307.004) "A" Details of "A" part 0~8 1.10(.043) MAX 0.600.10 (.024.004) +0.20 4.40 -0.10 6.400.10 +.008 .173 -.004 (.252.004) INDEX 0.25(.010) 0.100.05 (.004.002) 0.50(.020) 0.200.03 (.008.001) 0.10(.004) 7.00(.276) C 0.3865(.0152) 0.1270.03 (.005.001) 0.900.05 (.035.002) 0.3865(.0152) 2001 FUJITSU LIMITED F30007SC-1-1 Dimensions in mm (inches). Note: The values in parentheses are reference values. (Continued) 30 MB39A102 (Continued) 32-pad plastic BCC (LCC-32P-M15) 4.25(.167)TYP 0.50(.020)TYP 5.000.10(.197.004) 25 0.80(.031)MAX (Mount height) 17 INDEX AREA 1 4.25(.167) TYP 0.50(.020) TYP 0.500.10 (.020.004) 5.000.10 (.197.004) 0.0750.025 (.003.001) (Stand off) 9 9 Details of "A" part 0.05(.002) 0.14(.006) MIN 0.550.06 (.022.002) C0.2(.008) 25 3.00(.118) REF "C" "A" "B" 3.00(.118)REF Details of "B" part 0.300.06 (.012.002) C 0.500.10 (.020.004) 17 1 Details of "C" part 0.550.06 (.022.002) 0.550.06 (.022.002) 0.550.06 (.022.002) 0.550.06 (.022.002) 2005 FUJITSU LIMITED C32067S-c-1-1 Dimensions in mm (inches). Note: The values in parentheses are reference values. 31 FUJITSU MICROELECTRONICS LIMITED Shinjuku Dai-Ichi Seimei Bldg. 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0722, Japan Tel: +81-3-5322-3347 Fax: +81-3-5322-3387 http://jp.fujitsu.com/fml/en/ For further information please contact: North and South America FUJITSU MICROELECTRONICS AMERICA, INC. 1250 E. Arques Avenue, M/S 333 Sunnyvale, CA 94085-5401, U.S.A. Tel: +1-408-737-5600 Fax: +1-408-737-5999 http://www.fma.fujitsu.com/ Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE LTD. 151 Lorong Chuan, #05-08 New Tech Park, Singapore 556741 Tel: +65-6281-0770 Fax: +65-6281-0220 http://www.fujitsu.com/sg/services/micro/semiconductor/ Europe FUJITSU MICROELECTRONICS EUROPE GmbH Pittlerstrasse 47, 63225 Langen, Germany Tel: +49-6103-690-0 Fax: +49-6103-690-122 http://emea.fujitsu.com/microelectronics/ FUJITSU MICROELECTRONICS SHANGHAI CO., LTD. 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