FUJITSU SEMICONDUCTOR DATA SHEET DS04-27230-2E ASSP For Power Supply Applications (DC/DC Converter for DSC/Camcorder) 4-ch DC/DC Converter IC for low voltage MB39A103 DESCRIPTION The MB39A103 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. Achievement of low voltage start-up (1.7 V to) enables operation from low voltage. 4ch is built in TSSOP-30P/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. This product is covered by US Patent Number 6,147,477. FEATURES * * * * * * * * * * Supports for down-conversion and up/down Zeta conversion (CH1) Supports for up-conversion and up/down Sepic conversion (CH2 to CH4) Low voltage start-up (CH4): 1.7 V 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 independent of loads 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-M08) MB39A103 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 MB39A103 (Continued) CS2 CS1 -INE1 FB1 VCC -INE2 1 FB2 DTC2 N.C. (TOP VIEW) (Penetration fig 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-M08) 3 MB39A103 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 setting capacitor connection terminal 25 23 OUT1 O Totem pole type output terminal 4 1 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 setting capacitor connection terminal 24 22 OUT2 O Totem pole type 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 setting capacitor connection terminal 23 21 OUT3 O Totem pole type 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 setting capacitor connection terminal 22 20 OUT4 O Totem pole type 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 control terminal Short-circuit detection circuit capacitor connection terminal Short-circuit detection comparator inverted input terminal MB39A103 BLOCK DIAGRAM Threshold voltage accuracy 1.5% 29 -INE1 Error VREF 10 A Amp1 - + CS1 30 + 1.24 V L priority PWM +Comp.1 + - FB1 28 Drive1 Pch 25 OUT1 IO = 130 mA at VCCO = 4 V Threshold voltage accuracy 1.5% -INE2 2 Error VREF 10 A Amp2 - + CS2 1 + 1.24 V CH2 L priority PWM +Comp.2 + - Drive2 Nch 24 OUT2 L priority FB2 3 IO = 130 mA at VCCO = 4 V DTC2 4 Threshold voltage accuracy 1.5% -INE3 14 Error VREF 10 A Amp3 - + CS3 15 + 1.24 V CH3 L priority PWM +Comp.3 + - Drive3 Nch 23 OUT3 L priority FB3 13 DTC3 12 IO = 130 mA at VCCO = 4 V Threshold voltage accuracy 1.5% 17 -INE4 Error VREF 10 A Amp4 - + CS4 16 + 1.24 V CH4 L priority PWM +Comp.4 + - Drive4 Nch L priority FB4 18 DTC4 19 VREF SCP Comp. - + 1V 0.9 V 0.4 V OSC 8 9 RT CT 22 OUT4 21 GNDO IO = 130 mA at VCCO = 4 V 100 k -INS 20 CSCP 11 26 VCCO L priority DTC1 27 Short detection signal (L: at short) CH1 H: at SCP SCP UVLO2 Error Amp Power Supply SCP Comp. Power Supply Error Amp Reference bias 1.24 V Power UVLO1 H:UVLO release Accuracy 1% 5 VCC VREF VR1 ON/OFF CTL 2.0 V 7 VREF 10 GND 6 CTL H : ON (Power/ ON) L : OFF (Standby mode) VTH = 1.4 V 5 MB39A103 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Power supply voltage VCC Rating Condition Unit Min Max VCC, VCCO terminal 12 V Output current IO OUT1 to OUT4 terminal 20 mA Peak output current IOP OUT1 to OUT4 terminal 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 Min 1.7 Value Typ Max 11 2.5 4 11 -1 0 0 0 0 -15 100 39 11 500 100 24 0.1 0.1 0.1 1.0 F -30 +25 +85 C Symbol Condition Start power supply voltage VCC Power supply voltage VCC Reference voltage output current IREF VDTC VCTL IO fOSC CT RT CS CSCP VCC, VCCO terminal (CH4) VCC, VCCO terminal (CH1 to CH4) VREF terminal -INE1 to -INE4 terminal -INS terminal DTC1 to DTC4 terminal CTL terminal OUT1 to OUT4 terminal * CS1 to CS4 CREF TA Input voltage Control input voltage Output current Oscillation frequency Timing capacitor Timing resistor Soft-start capacitor Short-circuit detection capacitor Reference voltage output capacitor Operating ambient temperature VINE Unit V V 0 mA VCC - 0.9 V V VREF VREF V 11 V +15 mA 1500 kHz 560 pF 130 k 1.0 F 1.0 F * : 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 FUJITSU representatives beforehand. 6 MB39A103 ELECTRICAL CHARACTERISTICS 6. Error amplifier block [Error Amp1 to Error Amp4] 2.2 Under voltage 5. Soft2.1 Under voltage 4. Triangular 3. Short-circuit lockout protection start lockout protection circuit block wave oscillator detection block block circuit block (CH1 to CH3) block [OSC] [SCP] [CS1 to CS4] (CH4) [UVLO1] [UVLO2] 1. Reference voltage block [Ref] Parameter (VCC = VCCO = 4 V, TA = +25 C) Value Conditions Unit Min Typ Max 1.98 2.00 2.02 V Symbol Pin No VREF 7 VREF /VREF 7 TA = -30 C to +85 C Line Load 7 7 Threshold voltage VTH 22 Hysteresis width VH 22 Threshold voltage VTH 25 Hysteresis width VH 25 VTH Output voltage Output voltage temperature stability Input stability Load stability 0.5* % VCC = 2.5 V to 11 V VREF = 0 mA to -1 mA -10 -10 +10 +10 mV mV VCC = 1.4 1.5 1.6 V 0.02 0.05 0.1 V 1.7 1.8 1.9 V 0.05 0.1 0.2 V 11 0.65 0.70 0.75 V ICSCP 11 -1.4 -1.0 -0.6 A Reset voltage VRST 25 VREF = 1.3 1.45 1.58 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* % ICS 1, 15, 16, 30 CS1 to CS4 = 0 V -14 -10 -6 A VTH 3, 13, 18, 28 FB1 to FB4 = 0.65 V 1.222 1.240 1.258 V IB 2, 14, 17, 29 -INE1 to -INE4 = 0 V -120 -30 nA AV 3, 13, 18, 28 DC 100* dB BW 3, 13, 18, 28 AV = 0 dB 1.6* MHz Threshold voltage Input source current Frequency temperature stability Charge current Threshold voltage Input bias current Voltage gain Frequency bandwidth VCC = * : Standard design value (Continued) 7 MB39A103 (Continued) Symbol Pin No 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 VT0 22, 23, 24, 25 Duty cycle = 0 % 0.3 0.4 V VT100 22, 23, 24, 25 Duty cycle = Dtr 0.9 1.0 V IDTC 4, 12, 19, 27 DTC = 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 ISINK 22, 23, 24, 25 Duty 5 % (t = 1/fOSCxDuty) OUT1 to OUT4 = 4 V 75 130 mA 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 -25 -20 -17 A VIH 6 IC Active mode 1.7 11 V VIL 6 IC Standby mode 0 0.8 V ICTLH 6 CTL = 3 V 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 2.3 4.5 mA 9. Short-circuit 10. Control block detection 11. General [CTL] comparator block [SCP Comp.] 8. Output block [Drive1 to Drive4] 7. PWM 6. Error amplifier block comparator block [Error Amp1 to [PWM Comp.1 to Error Amp4] PWM Comp.4] Parameter Output voltage Output source current Output sink current Threshold voltage Input current Output source current Output sink current Output ON resistor CTL input voltage Input current Standby current Power supply current *: Standard design value. 8 (VCC = VCCO = 4 V, TA = +25 C) Value Conditions Unit Min Typ Max MB39A103 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. 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 Ambient temperature TA (C) Reference voltage VREF (V) 5 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 CTL terminal Current vs. CTL terminal Voltage 200 CTL terminal current ICTL (A) Reference Voltage vs. CTL terminal Voltage TA = +25 C VCC = 4 V 160 120 80 40 0 0 2 4 6 8 10 12 CTL terminal voltage VCTL (V) (Continued) 9 MB39A103 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 10 TA = +25 C VCC = 4 V CTL = 3 V 1000 100 RT = 130 k 10 1 10 100 1000 10 100 Timing resistor RT (k) 1.2 TA = +25 C VCC = 4 V CTL = 3 V RT = 24 k 1.1 1.0 Upper 0.9 0.8 0.7 0.6 0.5 Lower 0.4 0.3 VCC = 4 V 1.1 CTL = 3 V 1 RT = 24 k CT = 100 pF 0.9 200 400 600 800 1000 1200 1400 1600 Triangular wave oscillation frequency fOSC (kHz) Upper 0.8 0.7 0.6 0.5 Lower 0.4 0.3 0.2 -40 0.2 0 10000 Triangular Wave Upper and Lower Limit Voltage vs. Ambient Temperature Triangular wave upper and lower limit voltage VCT (V) 1.2 1000 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) RT = 11 k RT = 24 k RT = 56 k -20 0 20 40 60 80 100 Ambient temperature TA (C) Triangular wave oscillation frequency fOSC (kHz) Triangular Wave Oscillation Frequency vs. 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 Ambient temperature TA (C) (Continued) 10 MB39A103 (Continued) Error Amplifier Gain, Phase vs. Frequency AV 30 20 Gain AV (dB) TA = +25 C VCC = 4 V 180 90 10 0 0 -10 -20 -90 -30 10 k 1 F + 2.4 k IN 10 k 29 - 30 + + 1.5 V -40 1k 10 k 100 k 1M 28 OUT 1.24 V Error Amp1 the same as other channels -180 100 240 k 2.48 V Phase (deg) 40 10 M Frequency f (Hz) Power Dissipation vs. Ambient Temperature (BCC-32P) Power Dissipation vs. 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 Ambient temperature TA (C) 100 1000 980 800 600 400 200 0 -40 -20 0 20 40 60 80 100 Ambient temperature TA (C) 11 MB39A103 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 power supply 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) which 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 type, capable of driving an external P-channel MOS FET (channel 1), and N-channel MOS FET (channels 2 to 4). 12 MB39A103 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 detects the Error Amp output voltage level of each channel, 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 1.3 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 undervoltage 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 L L L Under voltage lockout protection circuit H L L L 13 MB39A103 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) *RT (k) MB39A103 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 to CS4 terminals at 10 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) =: 0.124 x CSX (F) * Soft-Start Circuit VO VREF 10 A R1 -INEX R2 L priority Error Amp - CSX CH ON/OFF signal L: ON, H: OFF + + 1.24 V CTLX CSX FBX UVLO X: Each channel No. 15 MB39A103 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 MB39A103 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 to be charged at 1 A. Short-circuit detection time : tSCP tSCP (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 time, 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 short-circuit 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 off and on again or VREF terminal (pin 7) voltage is less than 1.3 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 -INS - 20 SCP Comp. + SCP 1V + + + + - 1.1 V : FB1 to FB3 1.0 V : FB4 1 A To each channel Drives CTL CSCP 11 CSCP VREF S R Latch UVLO X: Each channel No. Note : When using self-power supply configuration in which the output from the CH4 DC/DC converter is connected to the VCC, note that short-circuit detection is not possible in the CH4 DC/DC converter output. 17 MB39A103 TREATMENT WITHOUT USING CSCP TERMINAL When not using the timer-latch short-circuit protection circuit, connect the CSCP terminal (pin 11) to GND with the shortest distance. * Treatment 18 without using CSCP terminal 10 GND 11 CSCP MB39A103 SETTING THE DEAD TIME When the device is set for step-up or inverted output based on the step-up or step-up/down Zeta conversion, step-up/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 Rb x 100 (%) , Vdt (V) = 0.5 V 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 MB39A103 POWERR SUPPLY EXAMPLE USING CH4 FOR SELF-POWER SUPPLY The MB39A103 can be started with the low input voltage (VIN 1.7 V) if the CH4 is used as a self-power supply. An example of supply the power using the transformer is shown below. * Power supply example using CH4 for self-power supply VCCO 2 VIN OUT4 22 -INE4 D 17 CS4 16 VREF - + + Error Amp4 21 D GNDO VO4-1 15 V VO4-2 5V 1.24 V FB4 18 VO4-3 -7.5 V 5 VCC Setting shown in the " APPLICATION EXAMPLE" is as follows: * Number of windings for VCC and VCC (O) is set to the value equivalent to VIN + 2.5 V. CH1 to CH3 are operational on VCC 2.5 V; in order for the CH1 to CH3 to operate on VIN 1.7 V, the number of windings should be set equivalent to VIN + 0.8 V or more for VCC and VCC (O). 20 MB39A103 I/O EQUIVALENT CIRCUIT Reference voltage block Control block Soft-start block VREF (2.0 V) VCC 5 1.24 V ESD protection element 7 VREF + - ESD protection element CTL 6 67 k CSX 77.3 k 124 k 104 k ESD protection element GND GND 10 GND Triangular wave oscillator block (CT) Triangular wave oscillator block (RT) Short-circuit 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-circuit detection comparator block Error amplifier block (CH1 to CH4) VCC VCC VREF (2.0 V) -INEX CSX 1.24 V VREF (2.0 V) -INS 20 (1 V) FBX GND GND PWM comparator block (CH1 to CH4) VCC FBX 100 k Output block (CH1 to CH4) VCCO 26 OUTX CT DTCX GNDO 21 GND X: Each channel No. 21 MB39A103 APPLICATION EXAMPLE VIN (1.7 V 5 V) R13R14 -INE1 29 A 3.3 k12 k 15 k R15 CS1 30 C20 R16 0.1 F 1 k C21 28 0.1 F FB1 R17 18 k 27 DTC1 R18 13 k R19R20 -INE2 2 B 3 k22 k 15 k R21 CS2 1 C22 R22 0.1 F 1 k C23 0.1 F FB2 3 R23 18 k 4 DTC2 R24 13 k R25R26 -INE3 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 2.4 k43 k 15 k R33 CS4 16 C26 R34 0.1 F 2 k C27 0.047 F FB4 18 R35 19 33 k DTC4 R36 -INS 20 k 20 Charging current VO2 3.3 V, 500 mA L3 C18 B 10 H VC2 R12 OUT2 300 24 CH2 C16 4700 pF C6 10 F VB1 L1 C4 D1 1 F 22 H C3 4700 pF 4.7 F VB2 C17 1 F D7 C19 10 F Q5 L4 15 H C D5 OUT3 23 CH3 C13 1 F T1 VO3-1 15 V, 10 mA C14 D6 2.2 F C15 2.2 F VO3-2 5 V, 50 mA Q4 OUT4 22 GNDO 21 CH4 D D2 C8 1 F 5 6 8 9 CT fOSC accuracy 10% C29 100 pF 7 VREF C30 0.1 F T2 D4 C2 0.1 F CTL 10 GND Q2 VO4-1 15 V, 10 mA C9 VO4-2 2.2 F 5 V, 50 mA D3 C10 2.2 F VCC C32 2.2 F D8 C28 0.01 F 22 15 H 25 OUT1 CH1 VO1 2.5 V, 250 mA Q1 VC1 R4 C1 0.1 F 150 CSCP 11 RT R37 24 k A C5 4.7 F L2 VCCO 26 C11 2.2 F H : ON (Power ON) L : OFF (Standby mode) VTH = 1.4 V VO4-3 -7.5 V, -5 mA MB39A103 PARTS LIST COMPONENT ITEM SPECIFICATION VENDOR PARTS No. Q1, Q2, Q4 Q5 PNP Tr Nch FET NPN Tr VCEO = -12 V, IC = -3 A VDS = 20 V, ID = 1.8 A VCEO = 15 V, IC = 3 A SANYO SANYO SANYO CPH3106 MCH3405 CPH3206 D1, D7, D8 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 L1 L2 L3 L4 Inductor Inductor Inductor Inductor 22 H 15 H 10 H 15 H 0.63 A, 160 m 0.76 A, 120 m 0.94 A, 67 m 0.76 A, 120 m TDK TDK TDK TDK RLF5018T-220MR63 RLF5018T-150MR76 RLF5018T-100MR94 RLF5018T-150MR76 T1, T2 Transformer SUMIDA CLQ52 5388-T095 C1, C2 C3, C16 C4, C8, C13 C5, C18 C6, C19 C9 to C11 C13, C17 C14, C15 C20 to C24, C26 C25, C27 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 0.1 F 4700 pF 1 F 4.7 F 10 F 2.2 F 1 F 2.2 F 0.1 F 0.047 F 0.01 F 100 pF 50 V 50 V 25 V 10 V 6.3 V 16 V 25 V 16 V 50 V 50 V 50 V 50 V TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK C1608JB1H104K C1608JB1H472K C3216JB1E105K C3216JB1A475M C3216JB0J106K C3216JB1C225K C3216JB1E105K C3216JB1C225K C1608JB1H104K C1608JB1H473K C1608JB1H103K C1608CH1H101J R4 R12 R13 R14 R15, R21, R27 R16, R22 R17 R18 R19 R20 R23 R24 R25, R31 R26 R28, R34 R29, R35 R30, R36 R32 R33 R37 Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor 150 300 3.3 k 12 k 15 k 1 k 18 k 13 k 3 k 22 k 18 k 13 k 2.4 k 43 k 2 k 33 k 20 k 43 k 15 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% 0.5% 0.5% 0.5% 0.5% ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm RR0816P-151-D RR0816P-301-D RR0816P-332-D RR0816P-123-D RR0816P-153-D RR0816P-102-D RR0816P-183-D RR0816P-133-D RR0816P-302-D RR0816P-223-D RR0816P-183-D RR0816P-133-D RR0816P-242-D RR0816P-433-D RR0816P-202-D RR0816P-333-D RR0816P-203-D RR0816P-433-D RR0816P-153-D RR0816P-243-D Note : SANYO : SANYO Electric Co., Ltd. TDK : TDK Corporation SUMIDA : SUMIDA Electric Co., Ltd. ssm : SUSUMU Co., Ltd. 23 MB39A103 REFERENCE DATA TOTAL Efficiency vs. Input Voltage 100 TA = +25 C VO1 = 2.5 V, 250 mA VO2 = 3.3 V, 500 mA VO3-1 = 15 V, 10 mA VO3-2 = 5 V, 50 mA VO4-1 = 15 V, 10 mA VO4-2 = 5 V, 50 mA VO4-3 = -7.5 V, -5 mA fOSC = 500 kHz TOTAL efficiency (%) 95 90 85 80 75 70 65 60 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input voltage VIN (V) Each CH Efficiency vs. Input Voltage 100 TA = +25 C Each CH efficiency (%) 95 90 85 CH1 80 75 CH3 CH4 70 65 60 1.0 Note: Only concerned CH and CH4 (self-power supply) are ON. CH2 Include external SW Tr operating current CH4 includes IC current consumption. 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input voltage VIN (V) (Continued) 24 MB39A103 Conversion Efficiency vs. Load Current (CH1) Conversion efficiency (%) 100 TA = +25 C VIN = 3.6 V 95 90 CH2, CH3 : OFF 85 80 75 IO1 80 mA: discontinuance mode 70 65 60 0 50 100 150 200 250 300 load current IO1 (mA) Conversion Efficiency vs. Load Current (CH2) Conversion efficiency (%) 100 TA = +25 C VIN = 3.6 V 95 90 CH1, CH3 : OFF 85 80 75 IO1 120 mA: discontinuance mode 70 65 60 0 100 200 300 400 500 load current lO2 (mA) (Continued) 25 MB39A103 Conversion Efficiency vs. Load Current (CH3, CH4) Conversion efficiency (%) 100 TA = +25 C VIN = 3.6 V VO3-1 = 10 mA VO4-1 = 10 mA VO4-3 = -5 mA 95 90 85 CH3 CH1, CH2 : OFF 80 75 CH4 CH1 to CH3 : OFF 70 Note: CH3 and CH4 are discontinuance mode. 65 60 0 10 20 30 40 50 load current IO3-2, IO4-2 (mA) (Continued) 26 MB39A103 (Continued) Switching Wave Form (CH1) TA = +25 C VIN = 4 V CTL = 3 V VB1 6 4 2 0 VC1 5 0 -5 0 1 2 3 4 5 6 7 8 9 10 t (s) Switching Wave Form (CH2) VB2 (V) 1 TA = +25 C VIN = 4 V CTL = 3 V 0 -1 -2 VC2 (V) 10 5 0 0 1 2 3 4 5 6 7 8 9 10 t (s) 27 MB39A103 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 28 Package MB39A103PFT 30-pin plastic TSSOP (FPT-30P-M04) MB39A103PV 32-pad plastic BCC (LCC-32P-M08) Remarks MB39A103 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) (Continued) 29 MB39A103 (Continued) 32-pad plastic BCC (LCC-32P-M08) 4.20(.165)TYP 0.50(.020)TYP 5.000.10(.197.004) 25 0.80(.031)MAX (Mount height) 17 INDEX AREA 1 4.20(.165) TYP 0.50(.020) TYP 0.500.10 (.020.004) 5.000.10 (.197.004) 0.0750.025 (.003.001) (Stand off) 9 Details of "A" part 0.05(.002) 0.14(.006) MIN 25 3.00(.118) 4.15(.163) REF REF "C" 9 "A" "B" 3.00(.118)REF 1 4.15(.163)REF Details of "B" part 0.400.06 (.016.002) 0.300.06 (.012.002) C 0.500.10 (.020.004) 17 C0.2(.008) Details of "C" part 0.450.06 (.018.002) 0.450.06 (.018.002) 0.450.06 (.018.002) 0.450.06 (.018.002) 2001 FUJITSU LIMITED C32060S-c-3-2 Dimensions in mm (inches) 30 MB39A103 FUJITSU LIMITED All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information and circuit diagrams in this document are presented as examples of semiconductor device applications, and are not intended to be incorporated in devices for actual use. Also, FUJITSU is unable to assume responsibility for infringement of any patent rights or other rights of third parties arising from the use of this information or circuit diagrams. The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for use requiring extremely high reliability (i.e., submersible repeater and artificial satellite). Please note that Fujitsu will not be liable against you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign Exchange and Foreign Trade Law of Japan, the prior authorization by Japanese government will be required for export of those products from Japan. F0209 FUJITSU LIMITED Printed in Japan