LTM8027_V01 LINER | Alldatasheet

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Description

LTM8027: 60V, 4A DC/DC µModule® Regulator Demonstration circuit 1307B features the L TM ®8027 configured to deliver 12V from a 16V to 60V input. The wide input range of the L TM8027 allows a variety of input sources such as automotive batteries, wall adaptors and industrial supplies. The L TM8027 is a step down converter , so a minimum amount of headroom is required to keep the output in regulation. A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage overshoots. The current mode control scheme creates fast transient response and good loop stability. perForMAnce sUMMArY(TA = 25°C) The L TM8027 data sheet gives a complete description of the part, operation and application information. The data sheet must be read in conjunction with this manual before working on or modifying demo circuit 1307B. Design files for this circuit board are available at http://www.linear .com/demo L, L T , L TC, L TM, Linear Technology, the Linear logo and µModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PARAMETER VALUE Input Voltage Range 16V to 60V Output Voltage VOUT 12V ±3% Maximum Output Current 4A Typical Switching Frequency 300kHz DeMo BoArD photo

  1. Place JP1 on the ON position.
  2. With power off, connect the input power supply to VIN
  3. Connect the load and preset to 0A.
  4. Turn on the power at the input.
  5. Check for the proper output voltage.
  6. Once the proper output voltages are established, adjust

Figure 1. Proper Measurement Equipment Setup

Figure 2. DC1307B Output Noise Spectrum (VIN = 24V , VOUT = 12V , IOUT = 4A)

ITEM QUANTITY REFERENCE DESCRIPTION MANUFACTURER’S PART NUMBER Required Circuit Components 1 1 C5 Capacitor , COG, 1500pF , 100V , 5%, 0603 AVX, 06031A152JAT2A 2 1 C1 Capacitor , X5R, 2.2µF , 100V , 10%, 1210 TDK, C3225X5R2A225K 3 1 C2 Capacitor , X5R, 22µF , 16V , 20%, 1210 AVX, 1210YC226MAT2A 4 2 C3, C4 Capacitor , TQC, 68µF , 16V SANYO, 16TQC68M 5 1 R1 Resistor , Chip, 56.2k, 1/16W , 1%, 0603 Vishay, CRCW060356K2FKEA 6 1 R2 Resistor ., Chip, 845k, 1/16W , 1%, 0603 Vishay, CRCW0603845KFKEA 7 1 R3 Resistor , Chip, 49.9k, 1/16W , 1%, 0603 Vishay, CRCW060349K9FKEA 8 1 R4 Resistor , Chip, 82.5k, 1/16W , 5%, 0603 Vishay, CRCW060382K5FKEA 9 1 U1 I.C., L TM8027EV#PBF , LGA,113-Pin Linear Technology, L TM8027EV#PBF Additional Demo Board Circuit Components 1 1 CIN Capacitor , Aluminum, 22µF , 63V Sun Electronic, 63CE22BS 2 1 C6 Capacitor , X7R, 0.1µF , 50V , 10%, 0603 Murata, GRM188R71H104KA93D 3 0 C7 (Optional) Capacitor , Aluminum, 63V , 22µF 4 0 C8 (Optional) Capacitor , 1210 5 0 C9 (Optional) Capacitor , 1206 6 0 L2 (Optional) Inductor , 22µH Vishay, IHLP-4040DZER22R0M11 7 0 FB1 (Optional) Resistor , Chip, 1206 Hardware, for Demo Board Only 1 6 E1-E6 Testpoint, Turrent, .095” MILL-MAX, 2501-2-00-80-00-00-07-0 2 1 JP1 2mm Single Row Header , 3-Pin Samtec, TMM-103-02-L-S 3 1 JP1 Shunt Samtec, 2SN-BK-G 4 4 E7-E10 Banana Jack Keystone, 575-4 5 4 (Stand-Off) Stand-Off, Nylon 0.50" Tall Keystone, 8833(Snap On)

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However , no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. scheMAtic DiAgrAM D D C C B B A A 16V - 60V 12V @ 4A ON OFF 100V 16V 50V 1206 (OPT) 1206 1210 (OPT)(OPT) VIN VIN FB1 (OPT)FB1 (OPT) + C4 68uF 16V + C4 68uF 16V E4 VOUTE4 VOUT 1500pF 1500pF + Cin 22uF 63V + Cin 22uF 63V + C7 22uF 63V + C7 22uF 63V + C3 68uF 16V + C3 68uF 16V JP1JP1 E5GND E5GND 0.1uF 0.1uF LTM8027EV LTM8027EV VINH1 RTB1 GND A1 GND E1 VOUT E9 BIAS1 A6 GND A8 GND A9 GND A10 GND A11 GND B2 GND B4 GND B5 GND B6 GND B7 GND B8 GND B9 GND B10 GND B11 GND C2 GND C3 GND C4 GND C5 GND C6 GND C7 GND C8 GND C9 GND C10 GND C11 GND D1 GND D2 GND D3 GND D4 GND D5 GND D6 GND D7 GND D8 GND D9 GND D10 GND D11 GND E2 GND E3 GND E4 GND E5 GND E6 GND E7 GND E8 GND F1GND F2GND F3GND F4GND F5GND F6GND F7GND F8GND G5GND G6GND G7GND G8GND H5GND H6GND H7GND H8GND J5GND J6GND J7GND J8GND K5GND K6GND K7GND K8GND L5GND L6GND L7GND L8 AUX A7 VOUT E10VOUT E11 VOUTF9 VOUTF10 VOUTF11 VOUTG9 VOUTG10 VOUTG11 VOUTH9 VOUTH10 VOUTH11 VOUTJ9 VOUTJ10 VOUTJ11 VOUTK9 VOUTK10 VOUTK11 VOUTL9 VOUTL10 VOUTL11 VINH2 VINH3 VINJ1 VINJ2 VINJ3 VINK1 VINK2 VINK3 VINL1 VINL2 VINL3 RUNA4 SYNCC1 SSA5 BIAS2A3 ADJA2 GNDB3 VOUT VOUT E7VIN E7VIN E2 GNDE2 GND E8 GNDE8 GND E3SYNC E3SYNC (OPT) (OPT) 49.9K 49.9K L2 IHLP-4040CZER-220MLL2 IHLP-4040CZER-220ML 82.5K 82.5K 2.2uF 2.2uF E10GND E10GND R1 56.2KR1 56.2K 22uF 22uF E6 BIASE6 BIAS VIN VIN 2.2uF 2.2uF 845K 845K

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com  LINEAR TECHNOLOGY CORPORATION 2013 LT 0313 • PRINTED IN USA DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (L TC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONL Y and is not provided by L TC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union direc- tive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT , SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further , the user releases L TC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. L TC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. L TC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a L TC applica- tion engineer . Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation