●STR7000+SI-8020 Series STR7000+SI-8020 Series Separate Excitation Switching Type ■Features • • • • • • • • High output current (6A:STR7000 series, 12A: STR7100 series) High efficiency (70 to 90%) Wide DC input voltage range Built-in drooping type overcurrent protection circuit Foldback type overcurrent protection can be set externally. Output voltage adjustment Built-in reference oscillator (35kHz) Output ON/OFF control ■Applications • Electronic equipment ■Lineup VO (V) 5 12 15 24 6 STR7001+SI-8020 STR7002+SI-8021 STR7002+SI-8022 STR7003+SI-8023 12 STR7101+SI-8020 STR7102+SI-8021 STR7102+SI-8022 STR7103+SI-8023 IO (A) ■Absolute Maximum Ratings Power Section: STR7000/STR7100 (Ta=25°C) Parameter Ratings Symbol STR7000 Series Unit STR7100 Series Power Transistor Breakdown Voltage V4-1 60 V Drive Transistor Breakdown Voltage V4-5 60 V Diode Breakdown Voltage V1-2 60 Collector Current Power Dissipation V IC 6(peak 7.5) 12(peak 15) A PD1 100(TC=25°C) 125(TC=25°C) W PD2 4.3(Without heatsink) 1.25 W 1.0 °C/W Power Transistor Thermal Resistance Rth(j-c) Power Transistor Junction Temperature Tj +150 °C Operating Temperature TOP –30 to +125(TC) °C Storage Temperature TStg –30 to +125 °C Symbol Ratings Unit VIN 55 V ■Control Section: SI-8020 Series (Ta=25°C) Paraneter DC Input Voltage Power Dissipation PD 1 W Operating Temperature TOP –20 to +85 °C Storage Temperature TStg –20 to +100 °C 86 ●STR7000+SI-8020 Series ■Electrical Characteristics: 6A Type (Ta=25°C) Ratings Parameter Symbol STR7001+SI-8020 min. DC Input Voltage Range Output Voltage VIN 11 VO 5.0 Conditions Efficiency Line Regulation 18 5.2 11.8 typ. STR7002+SI-8022 max. min. 50 21 12.2 14.8 12.0 typ. STR7003+SI-8023 max. min. 50 30 15.2 23.7 15.0 typ. 50 24.0 24.3 VIN=30V, IO=3.0A VIN=40V, IO=3.0A 72 84 86 90 VIN=20V, IO=3.0A VIN=27V, IO=3.0A VIN=30V, IO=3.0A VIN=40V, IO=3.0A 35 35 35 35 VIN=20V, IO=3.0A VIN=27V, IO=3.0A VIN=30V, IO=3.0A VIN=40V, IO=3.0A 120 150 200 VIN=22 to 32V, IO=3.0A VIN=25 to 35V, IO=3.0A VIN=35 to 45V, IO=3.0A 40 50 VIN=20V, IO=1 to 5A VIN=27V, IO=1 to 5A VIN=30V, IO=1 to 5A VIN=40V, IO=1 to 5A 45 45 45 45 f=100 to 120HZ f=100 to 120HZ f=100 to 120HZ f=100 to 120HZ RREJ Conditions IS1 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 Limited Current at Overcurrent IS2 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 Conditions RS=0.02Ω RS=0.02Ω RS=0.02Ω mV mV dB Overcurrent Protection Starting Current Protection Operation V kHZ 80 40 V % VIN=15 to 25V, IO=3.0A 30 Unit max. VIN=27V, IO=3.0A ∆VOLOAD Conditions Ripple Rejection 40 ∆VOLINE Conditions Load Regulation min. 5.1 f Conditions STR7002+SI-8021 max. VIN=20V, IO=3.0A η Conditions Switching Frequency typ. A A RS=0.02Ω ■Electrical Characteristics: 12A Type (Ta=25°C) Ratings Parameter Symbol STR7101+SI-8020 min. DC Input Voltage Range Output Voltage VIN 11 VO 5.0 Conditions Efficiency Switching Frequency Line Regulation 18 5.2 11.8 5.1 typ. STR7102+SI-8022 max. min. 50 21 12.2 14.8 12.0 VIN=27V, IO=6.0A typ. STR7103+SI-8023 max. min. 50 30 15.2 23.7 15.0 VIN=30V, IO=6.0A typ. 50 24.0 24.3 82 84 87 VIN=30V, IO=6.0A VIN=40V, IO=6.0A 35 35 35 35 VIN=20V, IO=6.0A VIN=27V, IO=6.0A VIN=30V, IO=6.0A VIN=40V, IO=6.0A kHZ 80 120 150 200 VIN=22 to 32V, IO=6.0A VIN=25 to 35V, IO=6.0A VIN=35 to 45V, IO=6.0A 40 50 VIN=20V, IO=3 to 9A VIN=27V, IO=3 to 9A VIN=30V, IO=3 to 9A VIN=40V, IO=3 to 9A 45 45 45 45 f=100 to 120HZ f=100 to 120HZ f=100 to 120HZ f=100 to 120HZ RREJ Conditions IS1 12 15 12 15 12 15 12 15 Limited Current at Overcurrent IS2 12 15 12 15 12 15 12 15 Conditions RS=0.01Ω RS=0.01Ω RS=0.01Ω mV mV dB Overcurrent Protection Starting Current Protection Operation V % VIN=15 to 25V, IO=6.0A 40 V VIN=40V, IO=6.0A VIN=27V, IO=6.0A 30 Unit max. 70 ∆VOLOAD Conditions Ripple Rejection 40 ∆VOLINE Conditions Load Regulation min. VIN=20V, IO=6.0A f Conditions STR7102+SI-8021 max. VIN=20V, IO=6.0A η Conditions typ. A A RS=0.01Ω 87 ●STR7000+SI-8020 Series ■Outline Drawing (unit: mm) STR7000/7100 Series 2.0 Part Number 21.2 ±0.3 ±0.2 25max. ±0.3 12.0 Lot Number Part Number 6max. 30max. 6.0max. ±0.2 30° 24.4 ±0.3 φ 3.2±0.1 36.0 SI-8020 Series 1 Pin DOT q w 3.5 e r +0.2 0.5±0.05 0.6 –0.1 1 2 3 4 5 6 7 8 9 10 ±0.05 0.27 2.54±0.1 t 5.45×4 5.45 ±1.0 +0.2 1.0 –0.1 4.5 2.0 20.0min. 4.7max. Lot Number 3.0 7max. q w e r t Plastic Mold Package Flammability: UL94V-0 Weight: Approx. 14.5g SWOUT(backside of case) Fly Wheel(ground) Drive VIN GND Plastic Mold Package (powder coating) Weight: Approx. 3.4g ■Block Diagram STR7000/7100 Series SI-8020 Series 9 SW.OUT 1 VIN 4 OSC.OUT SHUT DOWN VIN 10 7 VREF VOLTAGE REFERENCE and REGULATOR PWM COMP DEAD TIME CONTROLLED RAMP GENERATOR + 5 DRIVE – DRIVE 3 1 GND IO AMP 5 GND + – – 2 VO ADJ 2 F.WHEEL 4 CURR.SENSE 88 VO AMP + 8 COMPENSATION. A 6 COMPENSATION. B 3 VO.SENSE ●STR7000+SI-8020 Series ■Standard External Circuit 4 VIN L 1 SW VIN STR7000 STR7100 SERIES DRIVE 3 F/W 2 5V ... 200µH 12V ... 250µH 15V 24V ... 300µH VO * 5 330P C GND 5 10 C1 2200µF 8 C2 330p 6 7 5 DRIVE VIN VO.S 2 C.A SI-8020 SERIES 9 C.B VREF C3 10µF 3 C.S 4 VO. ADJ C4 1500µF × 2 (parallel) OSC. OUT SHUT DOWN GND 1 *C5 STR7100 Series only RS 6A ... 0.02Ω 12A ... 0.01Ω GND ■Notes of Pattern Design 1) Thick lines in the Standard External Circuit are lines through which a large current flows. Make these pattern lines as thick as possible. 2) Place capacitor C1 on the input side as closely as possible to terminals no.2 and no.4 of the STR7000/7100 series. C1 may be used in combination with a smoothing capacitor for rectifying, but the above points must be taken into consideration. In cases where C1 is not provided or it is placed too far from the terminals stated above, abnormal oscillation due to poorer transient response or increased ringing may occur. 3) Connect voltage sensing terminal VO.S and GND as closely as possible to output capacitor C4 (a current of approximately 1mA flows into the VO.S terminal). If they are placed too far from C4, abnormal oscillation due to decreased regulation or increased switching ripple may occur. 4) Connect current sensing terminal C.S and GND as closely as possible to the detection resistor Rs (a current of approximately 0.5mA flows from the CS terminal). If they are placed too far from Rs, a decrease of the overcurrent setting point due to the voltage drop in the pattern, or malfunction of the protection circuit due to increased ringing may occur. ■Ta-PD Characteristics STR7000 Series STR7100 Series 40 Power Dissipation PD (W) 35 200×200×2 30 25 20 15 100×200×2 100×100×2 75×75×2 10 5 Without heatsink 0 –20 0 25 40 35 Power Dissipation PD (W) Without Mica With Silicon Grease Heatsink: Aluminum Unit: mm 200×300×2 200×300×2 200×200×2 Without Mica With Silicon Grease Heatsink: Aluminum Unit: mm 30 100×200×2 25 20 15 100×100×2 75×75×2 10 5 Without heatsink 50 75 100 Ambient Temperature Ta (°C) 125 0 –20 0 25 50 75 100 125 Ambient Temperature Ta (°C) 89 ●STR7000+SI-8020 Series ■Typical Characteristics (Ta=25°C) STR7001+SI-8020(5V) STR7002+SI-8021(12V) Rise Characteristics Rise Characteristics 30 20 10 IO= 4 3A 5 2 4 6 8 10 12 14 0 0 16 18 20 5 10 Efficiency Characteristics 20 25 30 35 40 90 60 50 40 1 2 3 4 5 6 60 50 0 0 STR7101+SI-8020(5V) 1 2 3 4 5 6 6A 50 1 2 3 4 30 5 4 6 A 0.1 20 12 Output Voltage VO (V) 6A 12 A 0.1 A 10 20 25 15 10 5 8 10 12 14 16 18 0 0 20 5 10 Input Voltage VIN (V) 15 20 25 30 35 Efficiency Characteristics 100 90 90 80 5 10 50 Efficiency η (%) VIN=1 1V 20V 30V 40V 15 30 35 40 45 Input Voltage VIN (V) Efficiency Characteristics 100 90 VIN=30V VIN=18V 80 60 0 0 45 Efficiency Characteristics 100 70 40 Input Voltage VIN (V) 70 40V 50V 30V 40V 50V Efficiency η (%) 2 15 lo= Output Voltage VO (V) A lO=0.1 2 7 STR7103+SI-8023(24V) 25 6A 6 Rise Characteristics 20 4 5 Output Current IO (A) 12 A Output Voltage VO (V) 60 0 0 7 8 Efficiency η (%) 40V STR7102+SI-8021(12V) 6 45 40 Rise Characteristics 10 40 70 Output Current IO (A) Rise Characteristics 35 50V 50V 7 30 80 70 Output Current IO (A) 25 90 40 30 20 VIN=30V 40V 18V VIN= Efficiency η (%) Efficiency η (%) 40V 15 Efficiency Characteristics 30V 30V 0 0 10 100 80 70 5 Input Voltage VIN (V) Efficiency Characteristics 20V VIN=11V 0 0 45 100 90 Efficiency η (%) 15 Input Voltage VIN (V) A 2 100 0 0 3A 10 5 Input Voltage VIN (V) 80 15 lo= 0 0 20 IO= 0.1 A 10 6A 0.1 A 15 IO= Output Voltage VO (V) 0.1 A 3A 6A 6 Output Voltage VO (V) 25 8 Output Voltage VO (V) STR7003+SI-8023(24V) Rise Characteristics 60 50 80 70 60 40 0 0 2 4 6 8 10 Output Current IO (A) 90 50 40 30 12 14 0 0 2 4 6 8 10 Output Current IO (A) 12 14 0 0 2 4 6 8 10 Output Current IO (A) 12 14