LM536035EVM

LM53602xEVM and LM53603xEVM User's Guide Literature Number: SNVU470A June 2015 – Revised May 2016 Chapter 1 SNVU470A – June 2015 – Revised May 2016 Introduction The LM53603 Evaluation Module helps designers evaluate the operation and performance of the LM53603 wide input voltage automotive buck regulator. The board enables the user to test external synchronization, RESET/Power Good output, precision enable and operation in both Auto mode (with high efficiency operation and light load) and Forced PWM mode (FPWM). The EN pin is rated up to Vin while the SYNC pin, RESET pin and the mode pin (FPWM) are rated up to 6 V. Please refer to the LM53603 data sheet for detailed information on the IC parameters and operating characteristics. Figure 1-1. Evaluation Board 2 Introduction SNVU470A – June 2015 – Revised May 2016 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated Chapter 2 SNVU470A – June 2015 – Revised May 2016 Setup The LM536035EVM is ready to operate. There are two sets of input terminals. The first one labeled IN+, IN- (positive, negative) connects the power supply to the LM53603 regulator through and EMI filter with optional common mode choke. The second set of terminals labeled VIN, GND_IN (positive, negative) connects the supply directly to the LM53603, bypassing the EMI filter. The output terminals are labeled VOUT and GND with posts located on top of the regulators. Additional pads are available for optional extra input and output capacitance: CIN3 and COUT4. There are three jumper connectors that are used in order to interact with the LM53603. A jumper can be connected on each of these terminals. Refer to the schematic, Figure 2-1 for details on the connection of these jumpers. Table 2-1. Jumper Options Designator J1 J2 J3 2.1 Attached Function Jumper Position Result 1-2 (AUTO-MODE) Auto mode. The part lowers frequency at light load to increase efficiency, diode emulation active 3-2 (FPWM-MODE) FPWM mode: The part operates does not reduce frequency at light load, no diode emulation Mode (FPWM) Enable (EN) PowerGood/Reset output (RESET) 1-2 (GND-EN) The part is enabled (connection to Vin) 3-2 (VIN-EN) The part is disabled (connection to Gnd) 1-2 RESET output is pulled up to VCC no jumper RESET output pull-up disconnected. user can connect to pull-up source of her/his choice (