171021501/WPMDU1251501NT MagIC Power Module Product Family VDRM - Variable Step Down Regulator Module A DESCRIPTION The VDRM series of the MagIC Power Modules Family comprises a fully integrated current mode DC/DC power supply with the switching power stage, control circuitry and passives all in one package. These devices also have a built-in compensation circuitry and soft-start feature for a smooth, safe power up. The small QFN package is easy to solder onto a printed circuit board where a low profile is demand. The MagIC Power Module 01P requires as few as five external components and eliminates loop compensation and magnetics part selection process. B FEATURES Peak efficiency up to 96% The VDRM series offers high efficiency and delivers Current capability up to 2.5A up to 2.5A of output current with accurate regulated Wide input voltage range: 7V-50V output voltages. It operates from input voltage 7V to Regulated output voltages: 2.5V-15V 50V. 65V Line Transient Protection Switching frequency range: 400kHz-1MHz The VDRM regulators also have on-board protection adjustable circuitry to avoid thermal and electrical damage. The External clock synchronisation MagIC Power Module offers flexibility and the Built-in soft-start and tracking feature of a discrete point-of-load design. This is Power Good signal and pre-bias output ideal for powering a wide area of systems and ICs. Under voltage lockout protection (UVLO) Voltage overshoot and over-current protection Over temperature and current protection Operating ambient temperature: -40-85C EN55022 Class B compliant C APPLICATIONS Point of Load DC-DC applications Servers, Data and Telecom System power supplies DSPs, FPGAs, MCUs and MPUs I/O interface D TYPICAL APPLICATION CIRCUIT V VIN VOUT V IN OUT Module R R SET UVLO1 V (V) 3.3 5.0 12 OUT DL/UVLO VADJ R (k) SET 31.6 52.3 140 R (k) OPEN 1100 267 RT R (k) 174 174 174 UVLO1 C R C R (k) 40.2 31.6 15.4 IN UVLO2 OUT UVLO2 RT/CLK PG C (F) 4.7 2x2.2 2x2.2 IN min COUT(F)min 2x47 2x47 2x47 V (V) 7 8 15 IN to 36 to 50 to 50 f (kHz) 400 500 800 SW SS/TRK SSCHO AGND PGND 01S Data Sheet Wrth Elektronik eiSos GmbH & Co. KG - REV 0.1 1/ 32 2014 PRELIMINARY BQFN-41 171021501/WPMDU1251501NT MagIC Power Module Product Family VDRM - Variable Step Down Regulator Module E PACKAGE MARKING AGND 30 18 PGND PGND DU125150 PH 40 41 First row: Product number RT/CLK 31 17 PGND 16 PGND AGND 32 Second row: Logo & Code AGND 15 VOUT AGND 33 Third row: Product code 37 AGND 34 14 VOUT VOUT 12X 39 PH PG 35 13 VOUT 38 VADJ 36 12 VOUT ABCD X1 02P Top View BQFN-41 F PIN DESCRIPTION PIN PIN PIN DESCRIPTION SYMBOL 26 VIN 1I Input power supply 10, 11, 12, 13, VOUT 2I Output power supply 14, 15, 39 1, 4, 5, 30, 32, AGND 3I These pins are connected to the internal analog ground of the device. 33, 34, 37 16, 17, 18, 19, PGND 4I This is the return current path for the power stage of the device. 20, 40 5I Ground point. Connect AGND to PGND at these pins as shown in the Layout 8, 9 GND PT Considerations. 35 PG 6I Power Good flag pin. 36 VADJ 7I Sets the output voltage 8I These pin set the internal frequency over a resistor and can also use to synchronize to an 31 RT/CLK external clock. 27 DL/UVLO 9I Deadlock and UVLO adjust pin. 28 SS/TRK 10I Soft-start or tracking pin. 29 SSCHO 11I Soft-start and track feature select. 6, 7, 21, 22, PH 12I Phase switch node. 23, 24, 38, 41 2, 3, 25 DNC Do Not Connect. Data Sheet Wrth Elektronik eiSos GmbH & Co. KG - REV 0.1 2/ 32 2014 PRELIMINARY AGND 1 29 SSCHO 28 SS/TRK DNC 2 DNC 3 27 DL/UVLO AGND 4 26 VIN AGND 5 25 DNC 24 PH PH 6 23 PH PH 7 GND PT 8 22 PH 21 PH GND PT 9 20 PGND VOUT 10 VOUT 11 19 PGND