WPMDU1251501 / 171021501 MagIC Power Module VDRM - Variable Step Down Regulator Module 7 - 50V / 2.5A / 2.5 - 15V Output DESCRIPTION FEATURES The VDRM series of the MagIC Power Module family Peak efficiency up to 96% provide a fully integrated DC-DC power supply including Current capability up to 2.5A the buck switching regulator and inductor in a package. Wide input voltage range: 7V to 50V 65V transients capability The WPMDU1251501 offers high efficiency and delivers Output voltage range: 2.5V to 15V up to 2.5A of output current. It operates from 7V input Continuous output power: 37.5W voltage up to 50V. It is designed for fast transient Integrated shielded inductor solution for quick time to market and ease of use response. Adjustable switching frequency (0.3 to 1MHz) It is available in a standard industrial high power density Current Mode Control BQFN-41 (9 x 11 x 2.8mm) package with good thermal Undervoltage lockout protection (UVLO) performance. Adjustable soft-start and voltage tracking Frequency synchronization with external clock The VDRM regulators have an on-board protection Thermal shutdown and output short circuit protection circuitry to guard against thermal overstress and electrical Cycle by cycle current limit damage featuring thermal shutdown, over-current, short- Power Good circuit, overvoltage and undervoltage protections. Operating ambient temperature up to 85C Operating junction temp. range: -40 to 105C RoHS & REACH compliant Mold compound UL 94 Class V0 (flammability testing) certified Complies with EN 55022 class B radiated and TYPICAL APPLICATIONS conducted emissions standard Point-of-Load DC-DC applications from 12V and 24V industrial rails Industrial, Test & Measurement, Medical applications System power supplies DSPs, FPGAs, MCUs and MPUs supply I/O interface power supply TYPICAL CIRCUIT DIAGRAM 26 V IN VIN VOUT V OUT 35 R SET PG Module 27 36 EN/UVLO FB C C IN 31 OUT RT/CLK AGND PGND INTSS SS/TRK 29 28 we-online.com Wrth Elektronik eiSos GmbH & Co. KG - Data Sheet - REV 1.0 1/46 May 2016 BQFN-41WPMDU1251501 / 171021501 MagIC Power Module VDRM - Variable Step Down Regulator Module PACKAGE SW SW INTRRT 30 30 INTRRT 18 PGND PGND 18 PGND PGND 41 41 40 40 RT/CLK 31 31 RT/CLK 17 PGND PGND 17 Top view 16 PGND PGND 16 Bottom view AGND 32 32 AGND AGND 15 VOUT VOUT 15 AGND AGND 33 33 AGND 37 37 14 VOUT VOUT 14 AGND 34 34 AGND VOUT VOUT SW SW 38 39 39 38 PG 35 13 VOUT VOUT 13 35 PG 12 VOUT VOUT 12 FB 6 36 FB PIN DESCRIPTION SYMBOL PIN TYPE PIN DESCRIPTION The supply input pin is a terminal for an unregulated input voltage source. It is VIN 26 Power required to place the input capacitor nearby the VIN pin and PGND. 10, 11, 12, The output voltage pins are connected to the internal inductor. Connect external VOUT 13, 14, 15, Power bypass capacitors between these pins and PGND. 39 This is the return current path for the power stage of the device. Connect these pins 16, 17, 18, to the load and to the bypass capacitors associated with VIN and VOUT. Pad 40 PGND Power 19, 20, 40 should be connected to PCB ground planes using multiple vias for good thermal performance. These pins are connected to the internal analog ground (AGND) of the device. This node should be treated as the zero volt ground reference for the analog control circuitry. Pad 37 should be connected to PCB ground planes using multiple vias for 4, 5, 32, AGND Supply good thermal performance. Not all pins are connected together internally. All pins 33, 34, 37 must be connected together externally with a copper plane. Connect AGND to PGND at a single point (at the ground terminal of the first output capacitor). See Layout section for recommendations. An internal resistor of 10K is connected internally between RSET INT and FB. This is RSET INT 1 Analog the low side resistor of the feedback voltage divider. Must be connected to AGND. Connect a resistor from the last output capacitor terminal to FB to set the output FB 36 Input voltage. we-online.com Wrth Elektronik eiSos GmbH & Co. KG - Data Sheet - REV 1.0 2/46 May 2016 29 INTSS RSET INT 1 28 SS/TRK COMP 2 RCCOMP 3 27 EN/UVLO 26 VIN AGND 4 AGND 5 25 BOOT 24 SW SW 6 23 SW SW 7 NC 8 22 SW NC 9 21 SW VOUT 10 20 PGND VOUT 11 19 PGND VOUT 11 19 PGND VOUT 10 20 PGND NC 9 21 SW NC 8 22 SW SW 7 23 SW SW 6 24 SW AGND 5 25 BOOT AGND 4 26 VIN RCCOMP 3 27 EN/UVLO COMP 2 28 SS/TRK RSET INT 1 29 INTSS