TN7D51

TN7D51 SANYO | Alldatasheet

Document overview

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Technical content

Features

• High efficiency (ON resistance 80mΩ).
• Over current protection function (Self recovery type).
• Under voltage protection function.
• Over temperature protection function (Self recovery type).
• Soft start function (Variable subject to externally-connected capacitor).
• Stand-by mode function (Compatible with soft start terminal). Specifications Absolute Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit Maximum Input Voltage V IN max 57 V Maximum Output Current I O max 7A SW Pin Application Reverse Voltage V SW --1.5 V FB Pin Maximum Input Voltage V fb 15 V SS Pin Maximum Input Voltage V SS 7V Allowable Power Dissipation P D 2.0 W Tc=25°C2 0 W Operating Temperature Topr --25 to +125 °C Junction Temperature Tj 150 °C Storage Temperature Tstg --55 to +150 °C Recommend Operating Conditions Parameter Symbol Conditions Ratings Unit Input Voltage V IN Ta=25°C 20 to 48 V Output Current I OUT Ta=25°C0 to 7 A Operating Temperature Range Topr rec --10 to +85 °C SANYO Semiconductors DATA SHEET TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 82907IQ TI IM TC-00000851 Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer 's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. TN7D51 ExPD (Excellent-Performance Power & RF Device) Separately-Excited Step-Down Switching Regulator (12V Output type)

No. A0866-2/11 Electrical Characteristics at Ta=25°C, See Specified Test Circuit RatingsParameter Symbol Conditions min typ max Unit Output Voltage V OUT VIN=30V, IOUT =3A 11.7 12.0 12.4 V Efficiency η VIN=30V, IOUT =3A 92 % Drain-to-Source On Resistance R DS (on) I SW =7A 80 m Ω Switching Frequency Freq V IN=30V, IOUT =3A 120 150 180 kHz Maximum Duty Duty max V IN=30V, Vfb=0V 88 92 96 % Line Regulation ∆Vline V IN=20 to 40V, IOUT =3A 180 360 mV Load Regulation ∆Vload V IN=30V, IOUT =0.7 to 7A 100 200 mV Output Voltage Temperature Coefficient *1∆VO / ∆Ta V IN=30V, IOUT =3A, Ta= - -25 to +125°C ±1.2 mV / °C Over-Current-Protection-Operation Iocp VIN=30V 7.1 10.5 A-Threshold Current Under-Voltage-Protection-Operation Vuvlo on 7.2 8.0 8.8 V-Threshold Voltage Under-Voltage-Protection-Operation Vuvlo off 8.1 9.0 9.9 VRelease Voltage Under-Voltage-Protection Hysteresis VoltageVuvlo hys 1.0 V Over-Temperature-Protection-Operation Ttsd on 165 °C-Threshold-Current *1 Over-Temperature-Protection-Operation Ttsd off 140 °CRelease Temperature *1 Over-Temperature-Protection Ttsd hys 25 °CHysteresis Temperature *1 SS Terminal Current I SS VIN=30V 10 µA Standby Operating Voltage Vstb on V IN=30V 0.3 V Standby Current Istb V IN=30V, VSS =0V 500 µA Note: the values with "*1" are our targeted values, but not guaranteed. Package Dimensions unit : mm (typ) 7527-001 1 : VIN 2 : GND 3 : SWOUT 4 : FB 5 : SS SANYO : TO-220FI5H-HB 10.0 4.5 2.8 7.2 3.5 12.5 2.54 1.27 2.753.81 2.4 (5.9) 1.6 16.014.0 1 2 3 0.9 0.7 0.5 3.2 1.27 2.54

No. A0866-3/11 Block Diagram Pin Functions Pin No. Symbol Function 1V IN Power Supply Input (Maximum 57V)

2 GND GND

3 SWOUT Pulse Voltage Output

4F B Feedback from Output Voltage 5S S For Soft Start Capacitor Connection and Standby Mode Switching Application Circuit Example VIN SS GND SW OUT FB Low Voltage Protect SOFTSTART Band Gap OSC AMP COMP OUTPUT Thermal Shut Down Protect Over Current Protect SENSE Pch MOSFET + + VIN GND GND VOUT VIN SS GND SWOUT FB

No. A0866-4/11 Specified Circuit for Electrical Characteristics [Circuit] [Components] Symbol Component Specification C1 Electrolytic Capacitor 3000 to 3600 µF C2 Electrolytic Capacitor 2000 to 2200 µF C3 Capacitor 0.1 µF C6 Ceramic Capacitor 1000pF R3 Metal Oxide Film Resistor 47 Ω / 2W L1 Choke Coil 100 µH D1 Schottky Barrier Diode SBT250-06J * When measuring ripple noise voltage, put 47µF (electrolytic capacitor) and 0.1µF (ceramic or film capacitor) into measuring point. IT12620 0.5 1.0 1.5 2.5 2.0 0 4020 100 12060 80 140 160 No heat sink PD -- TcPD -- Ta Ambient Temperature, Ta -- °C Allowable Power Dissipation, PD -- W Case Temperature, Tc -- °C Allowable Power Dissipation, PD -- W 160140120100806040200 IT12671 + + VIN GND GND IT12637 VOUT IC1 C3 C6 5234

No. A0866-5/11 Evaluation Board [Circuit] [Components] Symbol Component Specification Maker Remark F1 Fuse 4A Littelfuse 452 004 C1A Electrolytic Capacitor 1200 µF / 80V Nippon Chemi-Con Corp. KZE C1B Electrolytic Capacitor 1200 µF / 80V Nippon Chemi-Con Corp. KZE C1C Electrolytic Capacitor 1200 µF / 80V Nippon Chemi-Con Corp. KZE C2A Electrolytic Capacitor 2200 µF / 35V Nippon Chemi-Con Corp. KMG C3 Film Capacitor 0.1 µF / 100V Matsushita Electronic Components Corp. ECQ-B C4 N.C. C5 N.C. C6 Ceramic Capacitor 1000pF Murata Manufacturing Co., Ltd R1 Jumper Line R2 N.C. R3 Metal Oxide Film Resistor 47 Ω / 2W Matsushita Electronic Components Corp. L1 Choke Coil HK-12S120-1010 TOHO ZINC CO.,LTD 100 µH D1 Schottky Barrier Diode SBT250-06J SANYO Semiconductor Co., Ltd + + VIN GND GND IT12638 VOUT C1A FUSE F1 IC1 C3 C6 C2A 5234 C1B C1C R2C5

No. A0866-6/11 Recommended PWB Pattern TO-220FI5H-HB Specification Silk Printing (Top View) TO-220FI5H-HB Specification Pattern (Perspective View)

No. A0866-7/11 Output Current -- A Output V oltage -- V Output Voltage -- Output Current Output Current -- A Efficiency -- % Efficiency -- Output Current Output Current -- A Output V oltage -- V Characteristic of Output Current Protection Input V oltage -- V Input V oltage -- V Input Current -- A Input Current -- Input Voltage Case Temperature, Tc -- °C Output V oltage -- V Output Voltage -- Tc Output V oltage -- V Output Voltage -- Input Voltage Case Temperature, Tc -- °C Oscillation Frequency -- kHz Oscillation Frequency -- Tc Input V oltage -- V Power Loss -- W Power Loss -- Input Voltage 11.8 11.9 12.3 12.0 12.1 12.2 1703 25 46 IT12672 20V 30V V IN=40V 100 1703 25 46 IT12673 40V V IN=20V 201 0 641 2 81 4 IT12674 IT12675 20V V IN=40V 1003 0 20 40 50 1003 0 20 40 50 10 03 0 20 40 50 IT12676 11.9 12.3 12.1 12.0 12.2 0 100--25 50 25 75 IT12678 V IN=30V 11.7 11.9 11.8 12.0 12.1 12.2 IOUT =3A IOUT =3A 0 100--25 50 25 75 IT12679 IOUT =7A IT12677 IOUT =7A 30V 130 120 140 160 150 170 180 V IN=30V IOUT =3A

No. A0866-8/11 Input V oltage -- V Output V oltage -- V Input Reduced-Voltage Characteristic Input / Output V oltage -- V Output Voltage Rising Characteristic Input / Output V oltage -- V Output Voltage Falling Characteristic Input / Output V oltage -- V Output Voltage Rising Characteristic Input / Output V oltage -- V Capacitance of Soft Start Capacitor -- Output Voltage Rising Characteristic Capacitance of Soft Start Capacitor -- Output Voltage Rising Characteristic Input / Output V oltage -- V Input / Output V oltage -- V Output Voltage Falling Characteristic 1003 0 20 40 IT12680 IOUT =3A IT12681 Input voltage: VIN=30V Output voltage: VOUT =12V ON IT12682 Input voltage: VIN=30V Output voltage: VOUT =12V IT12683 Input voltage: VIN=30V Output voltage: VOUT =12V ON IT12685 Output voltage: VOUT =12V C=0.01µF C=0.1µF C=0.22µF ON IT12686 Output voltage: VOUT =12V C=0.01µF C=0.1µF C=0.22µF ON IT12684 Input voltage: VIN=30V Output voltage: VOUT =12V IOUT =3A IOUT =7A IOUT =3A IOUT =7A IOUT =7AIOUT =3A 5V / div 20ms 5V / div 20ms 5V / div 20ms 2V / div 10ms 2V / div 10ms 5V / div 20ms

No. A0866-9/11 Example of Over-voltage Protection Circuit. Generally, in constant-voltage power supply circuit, output voltage will become higher than the specified value (over- voltage state) in case of any failures or PC board solderability defects. To minimize the damage caused by this over voltage, we recommend setting an over-voltage protection circuit. In designing, the following confirmations are necessary in actual circuit. 1) How the over-voltage protection circuit operates and its effects. 2) Is there any malfunction due to ambient temperature change of each device or exogenous noises? Over-voltage Protection Circuit Example Example of Over-voltage Protection Circuit The thyristor will operate when it accept an over-voltage (VOUT ) signal, then the fuse is melted and the input power is cut off, then the operation of IC1 is stopped. Continued on next page. VIN GND GND IT12639 VOUTFUSE C ZD R THYRISTOR Constant-voltage power supply + + VIN GND GND IT12640 VOUT 1THYRISTOR FUSE F1 IC1 5234 C ZD R

No. A0866-10/11 Continued from preceding page. SS terminal (5 pin) also acts as standby mode switch. By setting SS terminal (5 pin) voltage to be equal or less than 0.3Vtyp, the output ON/OFF is able to be controlled by external signals. ON/OFF Control Circuit Example In addition, confirmation of the following points is necessary in actual circuit. 1) How the output ON/OFF control operates and its effects. 2) Is there any malfunction due to the ambient temperature change of each device or exogenous noises? Points to Remember in Pattern Designing 1) Transient large current flows to VIN terminal (1 pin), so we recommend the input capacitor should be 3000µF and above. In addition, (+) (-) terminals of the input capacitor should be set near to VIN terminal (1 pin) and GND terminal (2 pin). 2) Large current flows to C1A to C, VIN terminal (1 pin) of IC1, SWOUT terminal (3 pin), D1, L1, and C2A. So, the wiring should be thick and short. 3) FB terminal (4 pin) of IC1 is the feedback terminal from output voltage. It should be near to the output capacitor C2A.

• For the purpose of ensuring the stability of oscillation, a capacitor should be inserted between SS terminal (5 pin) and GND terminal (2 pin).
• The absolute maximum rated voltage of SS terminal (5 pin) is 7V . The absolute maximum rated voltage of FB terminal (4 pin) is within the range of 5 to 30V according to the output voltage type. When a voltage equal or higher than the rated value is applied to SS terminal (5 pin) or FB terminal (4 pin) in some cases such as abnormal test, protection measures like inserting fuses should be taken.
• The built-in over-heat protection is a function to prevent the circuit from overheat state caused by transient temperature rise, but not a function to prevent from abnormal caused by a sudden heat generation. In addition, the reliability of over-heat protection function is not guarantee. + + VIN GND GND Signal IT12641 VOUT FUSE F1 IC1 NPN 5234

No. A0866-11/11 SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. PS This catalog provides information as of August, 2007. Specifications and information herein are subject to change without notice.