Click here for production status of specific part numbers. Evaluates: MAXM17630/MAXM17631/ MAXM17630/MAXM17631/ MAXM17632 Modules in Application MAXM17632 Evaluation Kits General Description Features The MAXM17630/MAXM17631/MAXM17632 evaluation Wide 4.5V to 36V Input Range kits (EV kits) provide a proven design to evaluate the MAXM17630 Offers High 86.47% Efficiency performance of MAXM17630/MAXM17631/MAXM17632 (V = 24V, V = 3.3V, I = 1A) IN OUT OUT modules. Each of these modules operates over a wide MAXM17631 Offers High 90.46% Efficiency input range from 4.5V to 36V and delivers up to 1A out- (V = 24V, V = 5V, I = 1A) IN OUT OUT put current. The modules are configured to demonstrate MAXM17632 Offers High 93.12% Efficiency optimum performance and component sizes in this EV kit. (V = 24V, V = 12V, I = 1A) IN OUT OUT The MAXM17630 module delivers up to 1A with a fixed Enable/UVLO Input, Resistor-Programmable UVLO 3.3V output. The module is configured to operate at a Threshold 900kHz switching frequency, over a 4.5V to 36V input Selectable PWM, PFM, and DCM Modes of range. Operation The MAXM17631 module delivers up to 1A with a fixed 5V Provision to synchronize the Modules to an External output. The module is configured to operate at a 1250kHz Clock Source switching frequency, over a 7V to 36V input range. Low-Profile, Surface-Mount Components The MAXM17632 adjustable module delivers up to 1A Proven PCB Layout and is configured for 12V output. The module is config - ured to operate at a 2150kHz switching frequency over a Fully Assembled and Tested 20V to 36V input range. RESET Outputs, with Pullup Resistor to The EV kit feature provisions for selecting modes of Respective V CC operation (PWM/PFM/DCM), synchronization to an exter- Complies with CISPR22(EN55022) Class B nal clock source, enable/disable, and UVLO settings. The Conducted and Radiated Emissions MAXM17630/MAXM17631/MAXM17632 module family data sheet provides a complete description of the parts and should be read in conjunction with this data sheet prior to operating the EV kits. Ordering Information appears at end of data sheet. 319-100446 Rev 0 9/19Evaluates: MAXM17630/MAXM17631/ MAXM17630/MAXM17631/ MAXM17632 Evaluation Kits MAXM17632 Modules in Application Setting Switching Frequency Quick Start When selecting the switching frequency, consider input Required Equipment voltage range, desired output voltage, t and ON(MIN) One 0V to 36V DC, 1A Power Supply t of the modules. Resistors (R103, R203, R303) OFF(MIN) Digital Multimeters (DMM) on the EV kit program the desired switching frequen- cies of the modules. To optimize performance and Load resistors for capable of sinking 1A, at 3.3V, 5V, component size, 900kHz switching frequency is chosen and 12V for MAXM17630, 1250kHz is chosen for MAXM17631, Equipment Setup and Procedure and 2150kHz is chosen for MAXM17632 modules. Use Table 1 and refer to the Switching Frequency section of The EV kits are fully assembled and tested. Follow the steps below to verify and test individual modules operation. the MAXM17630/MAXM17631/MAXM17632 data sheet to choose different values of resistors for programming Caution: Do not turn on power supply until all the required switching frequency. connections are completed. 1) Set the input power supply at a voltage between Enable/Undervoltage Lockout 4.5V and 36V for MAXM17630, between 7V and (EN/UVLO) Programming 36V for MAXM17631, or between 20V and 36V for The MAXM17630/MAXM17631/MAXM17632 EV kits offer MAXM17632. Disable the power supply. adjustable input undervoltage lockout levels for the modules. In the EV kits, for normal operation, leave the 2) Connect the positive terminal and negative terminal of jumpers (JU101, JU201, and JU301) open. When jumper the power supply to the VIN EMI pad and its adjacent JU101 is left open, MAXM17630 is enabled when the PGND pad of the module under evaluation. input voltage rises above 4.4V. When jumpers JU201 and 3) Connect a maximum of 1A resistive load across V OUT JU301 are left open, the MAXM17631 and MAXM17632 pad and its adjacent PGND pad of the corresponding modules are enabled when the corresponding input volt- module. ages rise above 6.8V and 19.5V respectively. To disable 4) Verify that the shunts are not installed on jumpers the modules, install shunts across pins 23 on jumpers (JU101, JU201, JU301) (see Table 1 for details). (JU101, JU201, and JU301). See Table 1 for jumper (JU101, JU201, and JU301) settings. 5) Select the shunt position on respective jumpers (JU102, JU202, JU302) according to the required A potential divider formed by the resistors R (R101, UPPER mode of operation (see Table 2 for details). R201, and R301) and R (R102, R202, and R302) LOWER sets the input voltage (V ) at which the module is INU 6) Connect a digital multimeter (in voltage measurement enabled. mode) across the V and respective PGND pads. OUT Choose R (R101, R201, and R301) to be 3.3M UPPER 7) Turn on the input power supply. and then calculate R (R102, R202, and R302) as LOWER 8) Verify that the digital multimeter displays expected follows: terminal voltage with respect to PGND. R 1.215 UPPER R = LOWER Detailed Description ( VINU 1.215 ) The MAXM17630/MAXM17631/MAXM17632 EV kits are Where R (R102, R202, and R302) is in M. designed to demonstrate the salient features of MAXM17630/ LOWER MAXM17631/MAXM17632 power modules. The EV kits For MAXM17630 to turn ON at 4.4V input, R102 is consist of typical application circuits of three different calculated to be 1.27M. modules. Each of these circuits are electrically isolated For MAXM17631 to turn ON at 6.8V input, R202 is from each other and hosted on the same PCB. Each of calculated to be 715k. the modules can be evaluated by powering them from For MAXM17632 to turn ON at 19.5V input, R302 is their respective input pins. Individual module settings can calculated to be 215k. be adjusted to evaluate their performance under different operating conditions. Maxim Integrated 2 www.maximintegrated.com