MB39A115

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27242-1E ASSP For Power Supply Applications 5 ch DC/DC Converter IC with Synchronous Rectification MB39A115 ■ DESCRIPTION The MB39A115 is a 5-channel DC/DC converter IC using pulse width modulation (PWM) , and the MB39A115 is suitable for up conversion, down conversion, and up/down converstion. The MB39A115 is built in 5 channels into TSSOP-38P/BCC-40P package and operates at 2 MHz maximum and, this IC can control and soft-start at each channel. The MB39A115 is suitable for power supply of high performance potable instruments such as a digital still camera (DSC). ■ FEATURES • • • • • • • • • • • • Supports for down-conversion with synchronous rectification (ch.1) Supports for down-conversion and up/down Zeta conversion (ch.2 to ch.4) Supports for up-conversion and up/down Sepic conversion (ch.5) Low voltage start-up (ch.5) : 1.7 V Power supply voltage range : 2.5 V to 11 V Reference voltage : 2.0 V ± 1% Error amplifier threshold voltage : 1.0 V ± 1% (ch.1) , 1.23 V ± 1% (ch.2 to ch.5) Oscillation frequency range : 200 kHz to 2.0 MHz Standby current : 0 µA (Typ) Built-in soft-start circuit independent of loads Built-in totem-pole type output for MOS FET Short-circuit detection capability by external signal (−INS terminal) Copyright©2006 FUJITSU LIMITED All rights reserved MB39A115 ■ PIN ASSIGNMENTS TOP VIEW CS2 −INE2 FB2 DTC2 VCC CTL CTL3 CTL4 CTL5 −INS VREF RT CT GND CSCP DTC3 FB3 −INE3 CS3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 CS1 −INE1 FB1 VCCO OUT1-1 OUT1-2 OUT2 OUT3 OUT4 OUT5 GNDO CS5 −INE5 FB5 DTC5 DTC4 FB4 −INE4 CS4 (FPT-38P-M03) (Continued) 2 MB39A115 (Continued) TOP VIEW (Penetration diagram from surface) VCCO 32 −INE2 −INE1 34 DTC2 CS2 CS1 FB2 VCC 1 40 39 38 37 36 35 33 FB1 NC 31 OUT1-1 CTL CTL3 CTL4 CTL5 −INS VREF RT CT GND 2 3 4 5 6 7 8 9 10 30 29 28 27 26 25 24 23 22 OUT1-2 OUT2 OUT3 OUT4 OUT5 GNDO CS5 −INE5 FB5 11 12 13 14 15 16 17 18 19 20 21 DTC5 CSCP DTC3 FB3 −INE3 CS3 NC CS4 −INE4 FB4 (LCC-40P-M07) DTC4 3 MB39A115 ■ PIN DISCRIPTIONS Block name Pin No. TSSOP 36 37 38 ch.1 34 33 4 3 ch.2 2 1 32 16 17 ch.3 18 19 31 23 22 ch.4 21 20 30 24 25 ch.5 26 27 29 OSC 13 12 31 30 40 39 38 37 29 12 13 14 15 28 20 19 18 17 27 21 22 23 24 26 9 8 OUT1-1 OUT1-2 DTC2 FB2 −INE2 CS2 OUT2 DTC3 FB3 −INE3 CS3 OUT3 DTC4 FB4 −INE4 CS4 OUT4 DTC5 FB5 −INE5 CS5 OUT5 CT RT O O I O I ⎯ O I O I ⎯ O I O I ⎯ O I O I ⎯ O ⎯ ⎯ BCC 33 34 35 Pin name FB1 −INE1 CS1 I/O O I ⎯ Description Error amplifier output terminal. Error amplifier inverted input terminal. Soft-start setting capacitor connection terminal. P-ch drive output terminal. (External main side FET gate driving) N-ch drive output terminal. (External synchronous rectification side FET gate driving) . Dead time control terminal. Error amplifier output terminal. Error amplifier inverted input terminal. Soft-start setting capacitor connection terminal. P-ch drive output terminal. Dead time control terminal. Error amplifier output terminal. Error amplifier inverted input terminal. Soft-start setting capacitor connection terminal. P-ch drive output terminal. Dead time control terminal. Error amplifier output terminal. Error amplifier inverted input terminal. Soft-start setting capacitor connection terminal. P-ch drive output terminal. Dead time control terminal. Error amplifier output terminal. Error amplifier inverted input terminal. Soft-start setting capacitor connection terminal. N-ch drive output terminal. Triangular wave frequency setting capacitor connection terminal. Triangular wave frequency setting resistor connection terminal. (Continued) 4 MB39A115 (Continued) Pin No. Block name TSSOP BCC 6 7 Control 8 9 15 10 35 5 Power 11 28 14 2 3 4 5 11 6 32 1 7 25 10 Pin name CTL CTL3 CTL4 CTL5 CSCP −INS VCCO VCC VREF GNDO GND I/O I I I I ⎯ I ⎯ ⎯ O ⎯ ⎯ Description Power supply control terminal. ch.3 control terminal. ch.4 control terminal. ch.5 control terminal. Short-circuit detection circuit capacitor connection terminal. Short-circuit detection comparator inverted input terminal. Drive output block power supply terminal. Power supply terminal. Reference voltage output terminal. Drive output block ground terminal. Ground terminal. 5 MB39A115 ■ BLOCK DIAGRAM −INE1 37 L VREF priority 10 µA CS1 38 Error − Amp1 + + Io = 300 mA at VCCO = 7 V Drive1-1 P-ch 35 VCCO + − PWM Comp.1 Dead Time 34 OUT1-1 1.0 V FB1 36 Threshold voltage 1.0 V ± 1% Drive1-2 N-ch Io = 300 mA at VCCO = 7 V 33 OUT1-2 Dead Time (td = 50 ns) −INE2 2 L VREF priority Error Amp2 10 µA − + + 1.23 V FB2 3 DTC2 4 −INE3 18 Threshold voltage 1.23 V ± 1% L VREF priority Error Amp3 1 µA − + + 1.23 V FB3 17 DTC3 16 −INE4 21 Threshold voltage 1.23 V ± 1% L VREF priority Error Amp4 1 µA − + + 1.23 V FB4 22 DTC4 23 −INE5 26 Threshold voltage 1.23 V ± 1% L VREF priority Error Amp5 1 µA − + + 1.23 V FB5 25 DTC5 24 L priority PWM + Comp.5 + − L priority PWM + Comp.4 + − L priority + + − PWM Comp.3 L priority PWM + Comp.2 + − CS2 1 Drive2 P-ch 32 OUT2 Io = 300 mA at VCCO = 7 V CS3 19 Drive3 P-ch 31 OUT3 Io = 300 mA at VCCO = 7 V CS4 20 Drive4 P-ch 30 OUT4 Io = 300 mA at VCCO = 7 V CS5 27 Drive5 N-ch 29 OUT5 28 GNDO Threshold voltage 1.23 V ± 1% VREF 100 kΩ 1V SCP Comp. SCP H: at SCP Io = 300 mA at VCCO = 7 V Short-circuit detection signal (L : at short-circuit) CSCP 15 −INS 10 − + 0.9 V CTL3 7 CTL4 8 CTL5 9 0.4 V CHCTL H : release UVLO UVLO2 UVLO1 Error Amp Power supply SCP Comp. Power supply Error Amp Reference 1.23 V bias Power VREF VR ON/OFF CTL Accuracy ± 0.8% 2.0 V 11 14 VREF GND 5 VCC H : ON (Power ON) L : OFF (standby mode) VTH = 1.0 V OSC 6 CTL 12 RT 13 CT 6 MB39A115 ■ ABSOLUTE MAXIMUM RATINGS Parameter Power supply voltage Output current Peak output current Power dissipation Storage temperature Symbol VCC IO IOP PD TSTG Condition VCC, VCCO terminals OUT1 to OUT5 terminals OUT1 to OUT5 terminals Duty ≤ 5% (t = 1/fOSC × Duty) Ta ≤ +25 °C (TSSOP-38P) Ta ≤ +25 °C (BCC-40P) ⎯ Rating Min ⎯ ⎯ ⎯ ⎯ ⎯ −55 Max 12 20 400 1680*1 1020*2 +125 Unit V mA mA mW mW °C *1 : When mounted on a 76 × 76 × 1.6 mm FR-4 boards. *2 : When mounted on a 117 × 84 × 0.8 mm FR-4 boards. 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 Start power supply voltage Power supply voltage Reference voltage output current Input voltage Symbol VCC VCC IREF VINE VDTC 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 VCTL IO fOSC CT RT CS CSCP CREF Ta Condition VCC, VCCO terminals (ch.5) VCC, VCCO terminals (ch.1 to ch.5) VREF terminal −INE1 to −INE5 terminals −INS terminal DTC2 to DTC5 terminals CTL, CTL3 to CTL5 terminals OUT1 to OUT5 terminals * ⎯ ⎯ CS1 to CS5 terminals ⎯ ⎯ ⎯ Value Min 1.7 2.5 −1 0 0 0 0 −15 0.2 27 3.0 ⎯ ⎯ ⎯ −30 Typ ⎯ 7 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 1.0 100 6.2 0.1 0.1 0.1 +25 Max 11 11 0 VCC − 0.9 VREF VREF 11 +15 2.0 680 39 1.0 1.0 1.0 +85 Unit V V mA V V V V mA MHz pF kΩ µF µF µF °C * : Refer to “■ SETTING THE TRIANGULAR WAVE OSCILLATION FREQUENCY”. 7 MB39A115 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. 8 MB39A115 ■ ELECTRICAL CHARACTERISTICS (VCC = VCCO = 7 V, Ta = +25 °C) Parameter Symbol Pin No. VREF1 Output voltage Reference Voltage Block [VREF] Input stability Load stability Temperature stability Short-circuit output current Under voltage lockout protection circuit Block (ch.1 to ch.4) [UVLO2] Under voltage lockout protection circuit Block (ch.5) [UVLO1] Threshold voltage Hysteresis width Reset voltage Threshold voltage Hysteresis width Reset voltage VREF2 VREF3 Line Load ∆VREF/ VREF IOS VTH VH VRST VTH VH VRST VTH ICSCP fosc1 fosc2 ∆fOSC/ fOSC ∆fOSC/ fOSC 11 11 11 11 11 11 11 34 34 34 30 30 30 15 15 29 to 34 29 to 34 29 to 34 29 to 34 CT = 100 pF, RT = 6.2 kΩ CT = 100 pF, RT = 6.2 kΩ VCC = 2.5 V to 11 V CT = 100 pF, RT = 6.2 kΩ VCC = 2.5 V to 11 V CT = 100 pF, RT = 6.2 kΩ Ta = 0 °C to +85 °C CS1, CS2 = 0 V VCC = ⎯ ⎯ VCC = VCC = ⎯ Conditions VREF = 0 mA VCC = 2.5 V to 11 V VREF = 0 mA to −1 mA VCC = 2.5 V to 11 V VREF = 0 mA to −1 mA Ta = 0 °C to +85 °C VREF = 0 V VCC = ⎯ Value Min 1.98 Typ 2.00 Max 2.02 Unit V V V mV mV % mA V V V V V V V µA 1.975 2.000 2.025 1.975 2.000 2.025 ⎯ ⎯ ⎯ ⎯ 1.7 0.05 1.55 1.35 0.02 1.27 0.65 −1.4 0.95 0.945 ⎯ ⎯ 2* 2* 0.20* −300* 1.8 0.1 1.7 1.5 0.05 1.45 0.70 −1.0 1.0 1.00 1.0* ⎯ ⎯ ⎯ ⎯ 1.9 0.2 1.85 1.65 0.1 1.63 0.75 −0.6 Threshold Short-circuit voltage detection Block Input source [SCP] current Oscillation frequency Triangular Wave Oscillator Block [OSC] Frequency Input stability Frequency temperature stability Soft-Start Block Charge (ch.1, ch.2) current [CS1, CS2] Soft-Start Block Charge (ch.3 to ch.5) current [CS3 to CS5] 1.05 MHz 1.055 MHz ⎯ ⎯ % % 1.0* ICS 1, 38 −13 −10 −7 µA ICS 19, 20, CS3 to CS5 = 0 V 27 −1.3 −1.0 −0.7 µA (Continued) 9 MB39A115 (VCC = VCCO = 7 V, Ta = +25 °C) Parameter Symbol Pin No. VTH1 VTH2 ∆VTH/ VTH IB AV BW VOH VOL ISOURCE ISINK VTH1 VTH2 ∆VTH/ VTH IB AV BW VOH VOL ISOURCE ISINK 37 37 37 37 36 36 36 36 36 36 2, 18, 21, 26 2, 18, 21, 26 2, 18, 21, 26 2, 18, 21, 26 3, 17, 22, 25 3, 17, 22, 25 3, 17, 22, 25 3, 17, 22, 25 3, 17, 22, 25 3, 17, 22, 25 FB1 = 0.65 V FB1 = 0.65 V VCC = 2.5 V to 11 V Ta = +25 °C VCC = 2.5 V to 11 V Ta = 0 °C to +85 °C Ta = 0 °C to +85 °C −INE2 to −INE5 = 0 V DC A V = 0 dB ⎯ ⎯ FB2 to FB5 = 0.65 V FB2 to FB5 = 0.65 V Condition VCC = 2.5 V to 11 V Ta = +25 °C VCC = 2.5 V to 11 V Ta = 0 °C to +85 °C Ta = 0 °C to +85 °C −INE1 = 0 V DC A V = 0 dB ⎯ ⎯ Value Min Typ Max Unit V V % nA dB MHz V mV mA µA V V % nA dB MHz V mV mA µA Threshold voltage Temperature stability Input bias current 0.990 1.000 1.010 0.988 1.000 1.012 ⎯ −120 ⎯ ⎯ 1.7 ⎯ ⎯ 150 0.1* −30 100* 1.4* 1.9 40 −2 200 ⎯ ⎯ ⎯ ⎯ ⎯ 200 −1 ⎯ Error Amp Block Voltage gain (ch.1) [Error Amp1] Frequency bandwidth Output voltage Output source current Output sink current Threshold voltage Temperature stability Input bias current Error Amp Block Voltage gain (ch.2 to ch.5) [Error Amp2 to Frequency Error Amp5] bandwidth Output voltage Output source current Output sink current 1.217 1.230 1.243 1.215 1.230 1.245 ⎯ −120 ⎯ ⎯ 1.7 ⎯ ⎯ 150 0.1* −30 100* 1.4* 1.9 40 −2 200 ⎯ ⎯ ⎯ ⎯ ⎯ 200 −1 ⎯ (Continued) 10 MB39A115 (Continued) (VCC = VCCO = 7 V, Ta = +25 °C) Parameter PWM Threshold Comparator voltage Block (ch.1 to ch.5) [PWM Comp.1 to Input current PWM Comp.5] Output source current Output sink current Output Block (ch.1 to ch.5) Output on [Drive1 to Drive5] resistor Dead time Short-Circuit Detection Block [SCP Comp.] Threshold voltage Input bias current Output on condition Output off condition Input current Standby current Power supply current * : Standard design value Note : The pin numbers referred are present on TSSOP-38P package. Symbol Pin No. VT0 VT100 IDTC Condition Value Min 0.35 0.85 −2.0 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 0.97 −25 1.5 0 5 ⎯ ⎯ ⎯ ⎯ Typ 0.4 0.9 −0.6 −300* 300* 9 9 50* 50* 1.00 −20 ⎯ ⎯ 30 ⎯ 0 0 4 Max 0.45 0.95 ⎯ ⎯ ⎯ 18 14 ⎯ ⎯ 1.03 −17 11 0.5 60 1 2 1 6 Unit V V µA 29 to 34 Duty cycle = 0% 29 to 34 Duty cycle = 100% 4, 16, 23, 24 29 to 34 29 to 34 DTC = 0.4 V Duty ≤ 5% (t = 1/fOSC × Duty) OUT = 0 V Duty ≤ 5% (t = 1/fOSC × Duty) OUT = 7 V ISOURCE ISINK ROH ROL tD1 tD2 VTH IB VIH VIL ICTLH ICTLL ICCS ICCSO ICC mA mA Ω Ω ns ns V µA V V µA µA µA µA mA 29 to 34 OUT = − 15 mA 29 to 34 OUT = 15 mA 33, 34 33, 34 34 10 −INS = 0 V OUT2 OUT1 − OUT1 − OUT2 ⎯ 6, 7 to 9 CTL, CTL3 to CTL5 6, 7 to 9 CTL, CTL3 to CTL5 6, 7 to 9 CTL, CTL3 to CTL5 = 3 V 6, 7 to 9 CTL, CTL3 to CTL5 = 0 V 5 35 5 CTL, CTL3 to CTL5 = 0 V CTL = 0 V CTL = 3 V Control Block (CTL, CTL3 to CTL5) [CTL, CHCTL] General 11 MB39A115 ■ TYPICAL CHARACTERISTICS Power Supply Current vs. Power Supply Voltage Power Supply Current ICC (mA) 5 4 3 2 1 0 0 2 4 6 8 10 12 Ta = +25 °C CTL = 3 V 5 Reference Voltage vs. Power Supply Voltage Reference Voltage VREF (V) Ta = +25 °C CTL = 3 V VREF = 0 mA 4 3 2 1 0 0 2 4 6 8 10 12 Power Supply Voltage VCC (V) Reference Voltage vs. Operating Ambient Temperature Reference Voltage VREF (V) 2.05 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 VCC = 7 V CTL = 3 V VREF = 0 mA Power Supply Voltage VCC (V) Operaing Ambient Temperature Ta ( °C) Reference Voltage vs. CTL Terminal Voltage CTL Terminal Current ICTL (µA) CTL Terminal Current vs. CTL Terminal Voltage 250 200 150 100 50 0 0 2 4 6 8 10 12 Ta = +25 °C VCC = 7 V Reference Voltage VREF (V) 5.0 4.0 3.0 2.0 1.0 0.0 0 2 4 6 8 10 12 Ta = +25 °C VCC = 7 V VREF = 0 mA CTL Terminal Voltage VCTL (V) CTL Terminal Voltage VCTL (V) (Continued) 12 MB39A115 Triangular Wave Oscillation Frequency vs. Timing Resistor Triangular Wave Oscillation Frequency fOSC (kHz) 10000 Ta = +25 °C VCC = 7 V CTL = 3 V 1000 CT = 27 pF CT = 100 pF 100 CT = 680 pF CT = 220 pF Triangular Wave Oscillation Frequency vs. Timing Capacity Triangular Wave Oscillation Frequency fOSC (kHz) 10000 Ta = +25 °C VCC = 7 V CTL = 3 V 1000 RT = 2.4 kΩ RT = 6.2 kΩ 100 RT = 36 kΩ RT = 13 kΩ 10 1 10 100 1000 Timing Resistor RT (Ω) Triangular Wave Upper and Lower Limit Voltage vs. Triangular Wave Oscillation Frequency 1.20 1.10 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 10 10 100 1000 10000 Timing Capacity CT (pF) Triangular Wave Upper and Lower Limit Voltage vs. Operating Ambient Temperature 1.20 1.10 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 −40 −20 0 20 40 60 80 100 Lower limit VCC = 7 V CTL = 3 V RT = 6.2 kΩ CT = 100 pF Triangular Wave Upper and Lower Limit Voltage VCT (V) Ta = +25 °C VCC = 7 V CTL = 3 V RT = 6.2 kΩ Triangular Wave Upper and Lower Limit Voltage VCT (V) Upper limit Upper limit Lower limit Triangular Wave Oscillation Frequency fOSC (kHz) Triangular Wave Oscillation Frequency vs. Operating Ambient Temperature Triangular Wave Oscillation Frequency fOSC (kHz) 1100 1080 1060 1040 1020 1000 980 960 940 920 900 −40 −20 0 20 40 60 80 100 VCC = 7 V CTL = 3 V RT = 6.2 kΩ CT = 100 pF Operating Ambient Temperature Ta ( °C) Operating Ambient Temperature Ta ( °C) (Continued) 13 MB39A115 (Continued) ON Duty vs. DTC Terminal Voltage 100 95 90 Ta = +25 °C VCC = 7 V CTL = 3 V FB = 2 V RT = 6.2 kΩ CT = 100 pF Start Power Supply Voltage vs. Timing Resistor Start Power Supply Voltage VCC (V) 2 Ta = −30 °C Ta = +25 °C 1.5 ON Duty (%) 85 80 75 70 65 60 55 50 0.6 Calculating value Measurement value 1 1 10 VCTL = VCC CT = 100 pF 100 0.65 0.7 0.75 0.8 0.85 0.9 DTC Terminal Voltage VDTC (V) Error Amp Voltage Gain, Phase vs. Frequency Error Amp Voltage Gain AV (dB) 50 40 30 20 10 0 −10 −20 −30 −40 −50 1k 10 k 100 k 1M φ Av Ta = +25 °C VCC = 7 V Timing Resistor RT (kΩ) 225 180 135 45 0 −45 −90 −135 −180 −225 10 M 90 2.0 V 240 kΩ Phase φ (deg) 10 kΩ 1 µF + IN 10 kΩ 2.4 kΩ 37 38 − + + 1.0 V 36 OUT 1.5 V Error Amp1 the same as other channels Frequency f (Hz) Power Dissipation vs. Operating Ambient Temperature (for TSSOP-38P) Power Dissipation PD (mW) 1800 1600 1400 1200 1000 800 600 400 200 0 −40 −20 0 20 40 60 80 100 Power Dissipation vs. Operating Ambient Temperature (for BCC-40P) Power Dissipation PD (mW) 2000 1800 1600 1400 1200 1000 800 600 400 200 0 −40 −20 0 20 40 60 80 100 2000 Operating Ambient Temperature Ta ( °C) Operating Ambient Temperature Ta ( °C) 14 MB39A115 ■ FUNCTIONAL DESCRIPTION 1. DC/DC Converter Function (1) Reference voltage block (VREF) The reference voltage circuit uses the voltage supplied from the VCC terminal (pin 5) to generate a temperature compensated stable voltage (2.0 V Typ) used as the reference voltage for the internal circuits of the IC. It is also possible to supply the load current of up to 1 mA to external circuits as a reference voltage through the VREF terminal (pin 11) . (2) Triangular wave oscillator block (OSC) The triangular wave oscillator block generates the triangular wave oscillation waveform width with 0.4 V to 0.9 V by the timing resistor (RT ) connected to the RT terminal (pin 12) , and the timing capacitor (CT) connected to the CT terminal (pin 13) . The triangular wave is input to the PWM comparator circuits on the IC. (3) Error amplifier block (Error Amp1 to Error Amp5) The error amplifier detects output voltage of the DC/DC converter and outputs PWM control signals. 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 for the system. You can prevent surge currents when the IC is turned on by connecting soft-start capacitors to the CS1 terminal (pin 38) to CS5 terminal (pin 27) which are the noninverting input terminals of the error amplifier. The IC is started up at constant soft-start time intervals independent of the output load of the DC-DC converter. (4) PWM comparator block (PWM Comp.1 to PWM Comp.5) The PWM comparator block is a voltage-pulse width converter that controls the output duty depending on the input/output voltage. An external output transistor is turned on, during intervals when the error amplifier output voltage and DTC voltage is higher than the triangular wave voltage. (5) Output block (Drive1 to Drive5) The output circuit uses a totem-pole configuration and is capable of driving an external P-ch MOS FET (main side of ch.1, ch.2, ch.3 and ch.4) and N-ch MOS FET (synchronous rectification side of ch.1 and ch.5). 15 MB39A115 2. Channel Control Function Use the CTL terminal (pin 6), CS1 terminal (pin 38), CS2 terminal (pin 1), CTL3 terminal (pin 7), CTL4 terminal (pin 8), and CTL5 terminal (pin 9) to set ON/OFF to the main and each channels. On/off setting conditions for each channel CTL L H H H H H H H CS1 X GND HiZ GND GND GND GND HiZ CS2 X GND GND HiZ GND GND GND HiZ CTL3 X L L L H L L H CTL4 X L L L L H L H CTL5 X L L L L L H H Power OFF ON ON ON ON ON ON ON ch.1 OFF OFF ON OFF OFF OFF OFF ON ch.2 OFF OFF OFF ON OFF OFF OFF ON ch.3 OFF OFF OFF OFF ON OFF OFF ON ch.4 OFF OFF OFF OFF OFF ON OFF ON ch.5 OFF OFF OFF OFF OFF OFF ON ON Note : Note that current which is over stand-by current flows into VCC terminal when the CTL terminal is in “L” level and one of the terminals between CTL3 to CTL5 terminals is set to “H” level. (Refer to CTL3 to CTL5 terminals equivalent circuit) • CTL3 to CTL5 terminals equivalent circuit VCC CTL3 to 5 200 kΩ 86 kΩ CTL5 ESD protection element 223 kΩ GND 14 16 MB39A115 3. Protection Function (1) Timer-latch short circuit protection circuit (SCP, SCP Comp.) The short-circuit detection comparator (SCP) detects the output voltage level of each channel. If the output voltage of any channel is lower than the short-circuit detection voltage, the timer circuit is actuated to start charging to the capacitor (Cscp) externally connected to the CSCP terminal (pin 15). When the capacitor (Cscp) voltage becomes about 0.7 V, the output transistor is turned off and the dead time is set to 100%. The short-circuit detection from external input is capable by using −INS terminal (pin 10). When the protection circuit is actuated, the power supply is recycled or the CTL terminal (pin 6) is set to "L" level, resetting the latch as the voltage at the VREF terminal (pin 11) becomes 1.27 V (Min) or less (Refer to “■SETTING THE TIME CONSTANT FOR TIMER-LATCH SHORT-CIRCUIT PROTECTION CIRCUIT”) . (2) Under-voltage lockout protection circuit (UVLO) The transient state or a momentary decrease in the power supply voltage, which occurs when the power supply is turned on, may cause the control IC to malfunction, resulting in the breakdown or degradation of the system. To prevent such malfunctions, under-voltage lockout protection circuit detects a decrease in internal reference voltage level 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 15) at the "L" level. The system returns to the normal state when the power supply voltage reaches the threshold voltage of the under-voltage lockout protection circuit. ■ PROTECTION CIRCUIT OPERATING FUNCTION TABLE The following table shows the state that the protection circuit is operating. Operation circuit OUT1-1 OUT1-2 OUT2 Short-circuit protection circuit Under voltage lockout protection circuit H H L L H H OUT3 H H OUT4 H H OUT5 L L 17 MB39A115 ■ SETTING THE OUTPUT VOLTAGE • ch.1 Vo R3 R1 37 −INE1 R2 − + + Error Amp 1 36 FB1 1.00 V CS1 1.00 V (R1 + R2) R2 VO (R1 + R3) ≥ 100 µA VO = 38 Set R1 and R3 refer to above formula, then error amp’s response is not slow. • ch.2 to ch.5 Vo R3 R1 − −INEX R2 + + Error Amp X FBX 1.23 V CSX 1.23 V (R1 + R2) R2 VO (R1 + R3) ≥ 100 µA VO = X : Each channel number Set R1 and R3 refer to above formula, then error amp’s response is not slow. ■ SETTING THE TRIANGULAR WAVE OSCILLATION FREQUENCY The triangular wave oscillation frequency can be set by connecting a timing resistor (RT ) to the RT terminal (pin 12) and a timing capacitor (CT) to the CT terminal (pin 13). Triangular wave oscillation frequency : fOSC 620000 CT (pF) × RT (kΩ) fOSC (kHz) = : 18 MB39A115 ■ 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 CS5) to the CS1 terminal (pin 38) to CS5 terminal (pin 27) respectively. As illustrated below, when each CTLX is set to “L” from “H”, ch.1 and ch.2 charge the soft-start capacitors (CS1 and CS2) externally connected to the CS1 and CS2 terminals at about 10 µA. When each CTLX is set to “H” from “L”, ch.3 to ch.5 charge the soft-start capacitors (CS3 to CS5) externally connected to the CS3 to CS5 terminals at about 1 µA. The error amplifier output (FB1 to FB5 terminals) is determined by comparison between the lower voltage of the two non-inverted input terminal voltage (1.23 V (ch.1 : 1.0 V) , CS terminal voltage) and the inverted input terminal voltage (−INE1 to −INE5 terminal) . The FB terminal voltage is decided for the soft-start period (CS terminal voltage < 1.23 V (ch.1 : 1.0 V) ) by the comparison between −INE terminal voltage and CS terminal voltage. The DC/DC converter output voltage rises in proportion to the CS terminal voltage as the soft-start capacitor externally connected to the CS terminal is charged. The soft-start time is obtained from the following formula : Soft-start time : ts (time until output 100%) ch.1 : ts (s) = 0.100 × CSX (µF) : ch.2 : ts (s) = 0.123 × CSX (µF) : ch.3 to ch.5 : ts (s) = 1.23 × CSX (µF) : • Soft-start circuit (ch.1, ch.2) Vo VREF 10 µA R1 −INEX R2 L priority Error Amp X − + + 1.0 V/1.23 V CSX CTLX FBX CSX X : Each channel number 19 MB39A115 • Soft-start circuit (ch.3 to ch.5) Vo VREF 1 µA R1 −INEX R2 L priority Error Amp X − + + CSX CSX 1.23 V FBX CTLX CHCTL X : Each channel number 20 MB39A115 ■ PROCESSING WHEN NOT USING CS TERMINAL When soft-start function is not used, leave the CS1 terminal (pin 38), the CS2 terminal (pin 1), the CS3 terminal (pin 19), the CS4 terminal (pin 20) and the CS5 terminal (pin 27) open. • When not setting soft-start time “Open” 1 CS2 CS1 38 “Open” “Open” CS5 27 “Open” 19 CS3 CS4 20 “Open” 21 MB39A115 ■ SETTING THE TIME CONSTANT FOR TIMER-LATCH SHORT-CIRCUIT PROTECTION CIRCUIT Each channel uses the short-circuit detection comparator (SCP Comp.) to always compare the error amplifier’s 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 15) 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 15) to be charged at 1 µA. Short-circuit detection time : tCSCP tCSCP (s) = 0.70 × CSCP (µF) : When the capacitor CSCP is charged to the threshold voltage (VTH = 0.70 V) , the latch is set to and the external : FET is turned off (dead time is set to 100%) . At this time, the latch input is closed and CSCP terminal (pin 15) is held at “L” level. The short-circuit detection from external input is capable by using −INS terminal (pin 10) . In this case, the shortcircuit detection operates when the −INS terminal voltage becomes the level of the threthold voltage (VTH = IV) : or less. 22 MB39A115 Note that the latch is reset as the voltage at the VREF terminal (pin 11) is decreased to 1.27 V (Min) or less by either recycling the power supply or setting the CTL terminal (pin 6) to “L” level. • Timer-latch short-circuit protection circuit Vo FBX R1 − −INEX R2 + Error Amp 1.23 V (ch.1 : 1.0 V) SCP Comp. + + − 1.1 V 1 µA To each channel drive CSCP 15 VREF CTL S R Latch UVLO X : Each channel number 23 MB39A115 ■ PROCESSING WHEN NOT USING CSCP TERMINAL To disable the timer-latch short-circuit protection circuit, connect the CSCP terminal (pin 15) to GND in the shortest distance. • Processing when not using the CSCP terminal 14 15 GND CSCP 24 MB39A115 ■ SETTING THE DEAD TIME When the device is set for step-up or inverted output based on the step-up, step-up/down Zeta method, step up/ down Sepic method, or flyback method, 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. When the DTC terminal is opened the maximum duty is 90% (Typ) because of this IC built-in resistor which sets the DTC terminal voltage. To disable the DTC terminal, connect it to the VREF terminal (pin 11) as illustrated below (when dead time is not set). • When dead time is set: (Setting with built-in resistor = 90%) : • When dead time is not set: 11 VREF “Open” DTCX DTCX X : Each channel number X : Each channel number To change the maximum duty using external resistors, set the DTC terminal voltage by dividing resistance using the VREF voltage. Refer to "When dead time is set : (Setting by external resistors)." It is possible to set without regard for the built-in resistance value (including tolerance) when setting the external resistance value to 1/10 of the built-in resistance or less. Note that the VREF load current must be set such that the total current for all the channels does not exceed 1 mA. When the DTC terminal voltage is higher than the triangular wave voltage, the output transistor is turned on. The formula for calculating the maximum duty is as follows, assuming that the triangular wave amplitude and triangular wave lower limit voltage are about 0.5 V and 0.4 V, respectively. Vdt − 0.4 V 0.5 V × 100 (%) DUTY (ON) Max = : Vdt = Rb Ra + Rb × VREF (condition : Ra < R1 10 , Rb < R2 10 ) Note : DUTY obtained by the above-mentioned formula is a calculated value. For setting, refer to “ON Duty vs. DTC Terminal Voltage” in “■ TYPICAL CHARACTERISTICS”. 25 MB39A115 • When dead time is set : (Setting by external resistors) VREF 11 Ra DTCX R1 : 131.9 kΩ To PWM Comp.X R2 : 97.5 kΩ Vdt Rb 14 GND X : Each channel number Setting example (for an aim maximum ON duty of 80% (Vdt = 0.8 V) with Ra = 13.7 kΩ and Rb = 9.1 kΩ) • Calculation using external resistors Ra and Rb only Vdt = Rb Ra + Rb × VREF = 0.80 V : Vdt − 0.4 V 0.5 V × 100 (%) = 80% ⋅ ⋅ ⋅ ⋅ (1) : DUTY (ON) Max= : • Calculation taking account of the built-in resistor (tolerance ± 20%) also Vdt = (Rb, R2 Combined resistance) (Ra, R1 Combined resistance) + (Rb, R2 Combined resistance) Vdt − 0.4 V 0.5 V × 100 (%) = 80% ± 0.2% • • • • (2) : × VREF = 0.80 V ± 0.13% : DUTY (ON) Max= : Based on (1) and (2) above, selecting external resistances of 1/10th or less of the built-in resistance enables the built-in resistance to be ignored. As for the duty dispersion, please expect ± 5% at (fosc = 1 MHz) due to the dispersion of a triangular wave amplitude. 26 MB39A115 ■ OPERATION EXPLANATION WHEN CTL TURNING ON AND OFF When CTL is turned on, internal reference voltage VR and VREF generate. When VREF exceeds each threshold voltage (VTH1, 2) of UVLO1 and UVLO2 (under voltage lockout protection circuit) , UVLO1 and UVLO2 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 UVLO1 and UVLO2 fall below each reset voltage (VRST1, 2) , UVLO operates and output drive circuit of each channel is forcibly done the operation stop, and makes the output an off state. In the period until reaching to 2.0 V by VREF voltage after UVLO1 and UVLO2 are released by turning on CTL (refer to a and b in “• Timing chart”) and the period until decreasing of VREF from 2.0 V after off CTL and operating of UVLO1 and UVLO2 (refer to a’ and b’ 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 of IC has decreased. Moreover, when in this period IC does the input sudden charge or the load sudden charge or turning on and off of CTL3 to CTL5, IC cannot conform and the output might overshoot. Therefore, impress the voltage to CTL terminal by which the VREF voltage never stays in the above-mentioned period. • CTL block equivalent circuit H : at SCP SCP ch.1 to ch.4 To output drive circuit H : Possible to operate L : Forced stop CS1 to CS4 To charge/discharge circuit H : Possible to charge L : Forced discharge ch.5 To output drive circuit H : Possible to operate L : Forced stop CS5 Error Amp reference To charge/discharge circuit H : Possible to charge 1.0 V/1.23 V L : Forced discharge VCC 5 UVLO2 H : UVLO release UVLO1 bias H : UVLO release VREF VR Power ON/OFF CTL 6 CTL 11 VREF 27 MB39A115 • Timing chart VR = 1.23 V (Typ) Error Amp Reference voltage VR VTH1 VTH2 VREF = 2.00 V (Typ) VRST2 VRST1 Reference voltage VREF UVLO5 b UVLO5 release UVLO5 effect a b UVLO1 to UVLO4 release a UVLO1 to 4 UVLO1 to UVLO4 effect Possible operate Fixed full off Possible operate Fixed full off ch.5 Output Drive circuit control ch.1 to ch.4 Output Drive circuit control Fixed full off Fixed full off CTL terminal voltage 1.1 ± 0.2 V (Typ) 28 MB39A115 ■ ABOUT THE LOW VOLTAGE OPERATION 1.7 V or more is necessary for the VCC terminal (pin 5) and the VCCO terminal (pin 35) for the self-power supply type to use the step-up circuit as the start voltage. Even if thereafter VIN voltage decreases to 1.5 V, operation is possible if the VCC terminal voltage and the VCCO terminal voltage rise to 2.5 V or more after start-up. However, it is necessary not to exceed the maximum duty set value by the duty due to the VIN decrease. Including other channels, execute an enough operation margin confirmation when using it. A VIN Step-up A R1 26 −INE5 CS5 27 R2 Error Amp5 − + + 1.23 V PWM Comp.5 Drive5 + + N-ch − 0.9 V 0.4 V VCCO 35 29 OUT5 Vo5 (5 V) VREF R4 VCC 5 DTC5 24 Max Duty R5 setting 29 MB39A115 ■ I/O EQUIVALENT CIRCUIT • Reference voltage block VCC 5 1.23 V + − • Control block ESD protection element 11 VREF • Channel control block (ch.3 to ch.5) VCC CTL 6 53 kΩ CTLX 86 kΩ ESD protection element 79 kΩ 124 kΩ GND 14 ESD protection element 278 kΩ GND 223 kΩ GND • Soft-start block VREF (2.0 V) • Short-circuit detection block • Short-circuit detection comparator block VCC VREF (2.0 V) CSX 2 kΩ 15 CSCP VREF (2.0 V) −INS 10 100 kΩ (1 V) GND GND GND • Triangular wave oscillator block (RT) VREF (2.0 V) 0.64 V + − 12 RT • Triangular wave oscillator block (CT) VREF (2.0 V) CT 13 GND GND • Error amplifier block (ch.1 to ch.5) VCC VREF (2.0 V) −INEX 1.0 V (ch.1) 1.23 V (ch.2 to ch.5) CSX FBX GND X : Each cannel No. (Continued) 30 MB39A115 (Continued) • PWM comparator block VCC VCCO 35 • Output block (ch.1 to ch.5) ) FB2 to FB5 DTCX CT OUTX GNDO 28 GND X : Each cannel No. 31 MB39A115 ■ APPLICATION EXAMPLE Step down (synchronous rectification) A R14 R15 510 Ω 4.3 kΩ −INE1 37 R16 24 kΩ CS1 38 R17 C18 1 kΩ 1.5 µF FB1 36 C19 0.1 µF A VCCO 35 0.1µF C17 34 OUT1-1 C1 1 µF Q1 L1 4.7 µH D1 Q2 Vo1 1.2 V/600 mA C2 2.2 µF 33 OUT1-2 Step down R18 R19 510 Ω 15 kΩ −INE2 R20 15 kΩ C20 1.5 µF Q3 2 C3 1 µF B L2 10 µH D2 OUT2 C4 2.2 µF Vo2 2.5 V/400 mA B CS2 R21 1 kΩ 1 32 VIN (5.5 V to 8.5 V) FB2 3 C21 0.1 µF DTC2 4 R24 R25 3.3 kΩ 22 kΩ −INE3 C 18 R26 15 kΩ CS3 19 R27 C22 1 kΩ 0.15 µF FB3 17 C23 0.1 µF DTC3 16 R30 R31 3 kΩ 43 kΩ −INE4 D 21 R32 15 kΩ CS4 20 R33 C24 1 kΩ 0.15 µF FB4 22 C25 0.1 µF DTC4 23 R36 R37 12 kΩ 100 kΩ −INE5 E 26 R38 10 kΩ CS5 27 R39 C26 0.15 µF 1 kΩ FB5 R40 25 C27 33 kΩ 0.1 µF DTC5 24 R41 20 kΩ Short-circuit −INS detection signal 10 (L : at short-circuit) Step down Q4 C L3 22 µH C5 1 µF 31 OUT3 D3 C6 2.2 µF Vo3 3.3 V/200 mA Step down Q5 D L4 47 µH C7 1 µF 30 OUT4 D4 C8 2.2 µF DVo4 5.0 V/100 mA Transformer E D7 TVo5-1 15 V/40 mA T2 29 28 OUT5 GNDO C12 1 µF Q7 D9 C13 2.2 µF C15 2.2 µF TVo5-3 −15 V/−10 mA Charge current 1 µA C28 2200 pF CSCP 15 5 VCC C16 0.1 µF CTL CTL3 7 CTL4 8 CTL5 9 H : ON L : OFF VTH = 1.0 12 RT R42 6.2 kΩ 13 Accuracy CT ±5% C29 100 pF (2.0 MHz) 11 VREF C30 0.1 µF 14 GND 6 H : ON (Power ON) L : OFF (Standby state) VTH = 1.0 V Accuracy ± 1% 32 MB39A115 ■ PARTS LIST COMPONENT Q1, Q3 to Q5 Q2, Q7 D1 to D4 D7, D9 L1 L2 L3 L4 T2 C1, C3, C5, C7 C2, C4, C6, C8 C12 C13, C15 C16, C17, C19 C18, C20 C21, C23, C25 C22, C24, C26 C27, C30 C28 C29 R14, R18 R15 R16 R17, R21, R27 R19, R20, R26 R24 R25 R30 R31 R32 R33, R39 R36 R37 R38 R40 R41 R42 Notes : SANYO TDK SUMIDA ssm ITEM P-ch FET N-ch FET Diode Diode Inductor Inductor Inductor Inductor Transformer Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor SPECIFICATION VDS = −20 V, ID = −1.0 A VDS = 30 V, ID = 1.4 A VF = 0.4 V (Max) , at IF = 1 A VF = 0.55 V (Max) , at IF = 0.5 A 4.7 µH 10 µH 22 µH 47 µH ⎯ 1 µF 2.2 µF 1 µF 2.2 µF 0.1 µF 1.5 µF 0.1 µF 0.15 µF 0.1 µF 2200 pF 100 pF 510 Ω 4.3 kΩ 24 kΩ 1 kΩ 15 kΩ 3.3 kΩ 22 kΩ 3 kΩ 43 kΩ 15 kΩ 1 kΩ 12 kΩ 100 kΩ 10 kΩ 33 kΩ 20 kΩ 6.2 kΩ 1.4 A, 37 mΩ 0.94 A, 56 mΩ 0.63 A, 130 mΩ 0.59A, 210 mΩ ⎯ 25V 25V 25V 25V 50V 10V 50V 16V 50V 50V 50V 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% VENDOR SANYO SANYO SANYO SANYO TDK TDK TDK TDK SUMIDA TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK TDK ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm ssm PARTS No. MCH3307 MCH3408 SBS004 SB05-05CP RLF5018T-4R7M1R4 RLF5018T-100MR94 RLF5018T-220MR63 SLF6028T-470MR59 CLQ52 5388-T139 C3216JB1E105K C3216JB1E225K C3216JB1E105K C3216JB1E225K C1608JB1H104K C2012JB1A155K C1608JB1H104K C1608JB1C154K C1608JB1H104K C1608JB1H222K C1608CH1H101J RR0816P-511-D RR0816P-432-D RR0816P-243-D RR0816P-102-D RR0816P-153-D RR0816P-332-D RR0816P-223-D RR0816P-302-D RR0816P-433-D RR0816P-153-D RR0816P-102-D RR0816P-123-D RR0816P-104-D RR0816P-103-D RR0816P-333-D RR0816P-203-D RR0816P-622-D : SANYO Electric Co., Ltd. : TDK Corporation : Sumida Corporation : SUSUMU CO., LTD. 33 MB39A115 ■ REFERENCE DATA TOTAL Efficiency vs. Input Voltage 100 95 TOTAL Efficiency η (%) 90 85 Ta = +25 °C Vo1 = 1.2 V, 600 mA Vo2 = 2.5 V, 400 mA Vo3 = 3.3 V, 200 mA Vo4 = 5.0 V, 100 mA Vo5-1 = 15 V, 40 mA Vo5-3 = −15 V, −10 mA fosc = 1 MHz setting 80 75 70 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 Input Voltage VIN (V) Each Channel Efficiency vs. Input Voltage 100 Each Channel Efficiency η (%) 95 90 ch.4 ch.3 85 ch.2 ch.5 80 75 70 5.0 Ta = +25 °C Vo1 = 1.2 V, 600 mA Vo2 = 2.5 V, 400 mA Vo3 = 3.3 V, 200 mA Vo4 = 5.0 V, 100 mA Vo5-1 = 15 V, 40 mA Vo5-3 = −15 V, −10 mA fosc = 1 MHz setting 5.5 6.0 6.5 ch.1 Note : Only concerned channel is ON. Including external SW Tr driving current 7.0 7.5 8.0 8.5 9.0 Input Voltage VIN (V) (Continued) 34 MB39A115 ch.1 and ch.2 Efficiency vs. Load Current 100 95 VIN = 7.2 V Ta = +25 °C ch.2 ch.1 and ch.2 Efficiency η (%) IO1 (ch.1) IO2 (ch.2) 90 85 120 mA: Discontinuance mode 100 mA: Discontinuance mode ch.1 80 75 70 65 60 0 50 100 150 200 250 300 350 400 450 500 550 600 Note : Only concerned channel is ON. Including external SW Tr driving current Load Current IO (mA) ch.3 and ch.4 Efficiency vs. Load Current 100 ch.4 95 ch.3 and ch.4 Efficiency η (%) 90 85 80 75 70 65 60 0 50 100 150 200 250 300 IO3 (ch.3) 50 mA: Discontinuance mode IO4 (ch.4) 30 mA: Discontinuance mode ch.3 VIN = 7.2 V Ta = +25 °C Note : Only concerned channel is ON. Including external SW Tr driving current 350 400 Load Current IO (mA) (Continued) 35 MB39A115 ch.5 Efficiency vs. Load Current 100 95 90 VIN = 7.2 V Ta = +25 °C ch.5 Efficiency η (%) 85 80 ch.5 75 70 65 IO5-1 60 0 10 20 30 40 50 60 30 mA: Discontinuance mode Notes Only feedback controlling output is get by using transformer channel. TVO5-3 ( 15 V): IO = 10 mA fixed Only concerned channel is ON. Including external SW Tr driving current Load Current IO (mA) (Continued) 36 MB39A115 Switching waveform OUT1-1 [V] 10 5 0 OUT1-2 [V] 10 5 0 VD [V] 10 5 0 t [µs] ch.1 VIN = 7.2 V Vo1 = 1.2 V lo1 = 600 mA 0 0.05 0.10 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 OUT2 [V] 10 T 5 0 ch.2 VIN = 7.2 V Vo2 = 2.5 V lo2 = 400 mA VD [V] 10 5 0 t [µs] 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 OUT3 [V] 10 5 0 T ch.3 VIN = 7.2 V Vo3 = 3.3 V lo3 = 200 mA VD [V] 10 5 0 t [µs] 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 (Continued) 37 MB39A115 (Continued) OUT4 [V] 10 5 0 T ch.4 VIN = 7.2 V Vo4 = 5 V lo4 = 100 mA VD [V] 10 5 0 t [µs] 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 OUT5 [V] 10 5 0 VD [V] 15 10 5 0 t [µs] ch.5 VIN = 7.2 V Vo5-1 = 15 V Vo5-3 = −15 V Io5-1 = 40 mA lo5-3 = −10 mA 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 38 MB39A115 ■ USAGE PRECAUTIONS • 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 kΩ to 1 MΩ between body and ground. • Do not apply a 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 MB39A115PFT MB39A115PV2 Package 38-pin plastic TSSOP (FPT-38P- M03) 40-pin plastic BCC (LCC-40P-M07) Remarks 39 MB39A115 ■ PACKAGE DIMENSIONS 38-pin plastic TSSOP Lead pitch Package width × package length Lead shape Sealing method Mounting height 0.50 mm 4.40 × 9.70 mm Gullwing Plastic mold 1.10 mm MAX (FPT-38P-M03) 38-pin plastic TSSOP (FPT-38P-M03) 9.70±0.10(.382±.004) 1.10(.043) MAX 0~8˚ 0.60±0.10 (.024±.004) 0.25(.010) INDEX 4.40±0.10 6.40±0.10 (.173±.004) (.252±.004) 0.10±0.10 (.004±.004) 0.50(.020) 0.90±0.05 (.035±.002) 0.127±0.05 (.005±.002) 0.10(.004) 9.00(.354) C 2002 FUJITSU LIMITED F38003Sc-1-1 Dimensions in mm (inches). Note: The values in parentheses are reference values. (Continued) 40 MB39A115 (Continued) 40-pin plastic BCC Lead pitch Package width × package length Sealing method Mounting height Weight 0.50 mm 6.00 mm × 6.00 mm Plastic mold 0.80 mm MAX 0.05 g (LCC-40P-M07) 40-pin plastic BCC (LCC-40P-M07) 6.00±0.10(.236±.004) 31 21 0.80(.031)MAX (Mount height) 21 5.20(.205)TYP 5.10(.201)TYP 0.50(.020) TYP 0.50±0.10 (.020±.004) 31 0.14(.006) MIN 6.00±0.10 (.236±.004) INDEX AREA 5.10(.201) TYP 5.20(.205) TYP 0.50(.020) TYP 5.25(.207) REF 4.00(.157) REF 0.50±0.10 (.020±.004) "C" 11 1 11 "B" 0.075±0.025 (.003±.001) (Stand off) 0.70±0.06 (.028±.002) "A" 4.00(.157)REF 5.25(.207)REF Details of "B" part 0.55±0.06 (.022±.002) 1 Details of "A" part 0.14(.006) MIN 0.05(.002) Details of "C" part C0.20(.008) 0.55±0.06 (.022±.002) 0.60±0.06 (.024±.002) 0.30±0.06 (.012±.002) 0.55±0.06 (.022±.002) 0.55±0.06 (.022±.002) C 2004 FUJITSU LIMITED C40057S-c-1-1 Dimensions in mm (inches). Note: The values in parentheses are reference values. 41 MB39A115 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, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device; Fujitsu does not warrant proper operation of the device with respect to use based on such information. When you develop equipment incorporating the device based on such information, you must assume any responsibility arising out of such use of the information. Fujitsu assumes no liability for any damages whatsoever arising out of the use of the information. Any information in this document, including descriptions of function and schematic diagrams, shall not be construed as license of the use or exercise of any intellectual property right, such as patent right or copyright, or any other right of Fujitsu or any third party or does Fujitsu warrant non-infringement of any third-party’s intellectual property right or other right by using such information. Fujitsu assumes no liability for any infringement of the intellectual property rights or other rights of third parties which would result from the use of information contained herein. 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. Edited Business Promotion Dept. F0604