71020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module DESCRIPTION The VDRM series of the MagI³C Power Modules Family comprise a fully integrated current mode DC/DC power supply with both the switching power stage, control circuitry and passive all in one package These devices also feature built-in compensation circuitry and a soft-start feature for a smooth, safe power up.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module A PACKAGE MARKING First row: Logo & Date code XYTTES WPMXX 1234567XX 3 4 5 6 7 VOUT 2 Third row: Parameter code FB 1 Second row: Product family and type 6 SS EN AGND VIN RON 7 Top View 7 PIN PFM B PIN DESCRIPTION PIN # PIN SYMBOL 1 2 3 4 5 6 7 EP VIN RON EN AGND SS FB VOUT EP C PIN DESCRIPTION Input power supply Set the frequency of the application Remote ON/OFF Reference grou
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module E ABSOLUTE MAXIMUM RATINGS (1) Preventive Caution: Exceeding the listed absolute maximum ratings below may affect the device negatively and may cause permanent damage. Therefore operating ratings are conditions under which operation of the device is intended to be functional. All values are referenced to GND and to a free ambient operating temperature of TA=25 ± 5°C unless otherwise specified.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module H ELECTRICAL SPECIFICATIONS Limits are valid for recommended junction temperature range of -40°C to 125°C. Typical values represent the most likely norm at following conditions: VIN=24V, VOUT=3.3V, TA=25°C, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN (3) SS discharge current ISS-DIS Specifications regarding to the regulation and over-voltage comparator VSS >+ 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module I TYPICAL PERFORMANCE CURVES If not otherwise specified, the following conditions apply: VIN = 24V; CIN = 10µF X7R Ceramic; CO = 100µF X7R Ceramic, TAMB = 25°C Efficiency: VIN = 6V @ TAMB = 25°C Power Loss: VIN = 6V @ TAMB = 25°C 100 1.2 95 1.0 Power Loss [W] Efficiency [%] 90 85 80 75 70 65 VOUT = 2.5V VOUT = 1.8V VOUT = 1.5V 60 55 VOUT = 2.5V VOUT = 1.8V VOUT = 1.5V 0.8 0.6 0.4 0.2 50 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module I TYPICAL PERFORMANCE CURVES If not otherwise specified, the following conditions apply: VIN = 24V; CIN = 10µF X7R Ceramic; CO = 100µF X7R Ceramic, TAMB = 25°C Efficiency: VIN = 6V @ TAMB = 85°C Power Loss: VIN = 6V @ TAMB = 85°C 100 1.4 95 1.2 Power Loss [W] Efficiency [%] 90 85 80 75 70 65 VOUT = 2.5V VOUT = 1.8V VOUT = 1.5V 60 55 VOUT = 2.5V VOUT = 1.8V VOUT = 1.5V 1.0 0.8 0.6 0.4 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module I TYPICAL PERFORMANCE CURVES If not otherwise specified, the following conditions apply: VIN = 24V; CIN = 10µF X7R Ceramic; CO = 100µF X7R Ceramic, TAMB = 25°C Line and Load Regulation TAMB = 25°C 2.5 3.36 2.0 3.34 Output Voltage [V] Output Current [A] Thermal Derating: VOUT = 3.3V @ θJA = 19.6°C/W 1.5 1.0 0.5 VIN = 12V VIN = 8V VIN = 12V VIN = 24V VIN = 36V 3.32 3.30 3.28 3.26 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION MagI³C 7 Steps to design the power application The next 7 simple steps will show how to select the external components to design your power application: 1. 2. 3. 4. 5. 6. 7.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION ( ) (2) These resistors should be chosen from values in the range of 1kΩ to 50kΩ. A feed-forward capacitor is placed in parallel with RFBT to improve load step transient response. Its value is usually determined experimentally by load stepping between DCM and CCM conduction modes and adjusting for best transient response and minimum output ripple.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION (5) where is calculated using equation (16) below. ) ) (6) where AFB is the gain of the feedback network from VOUT to VFB at the switching frequency. As worst case, assume the gain of AFB with the CFF capacitor at the switching frequency is 1. The selected capacitor should have sufficient voltage and RMS current rating.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION section. The on-time of the MagI³C power module timer is determined by the resistor RON and the input voltage VIN. It is calculated as follows: ) (11) The inverse relationship of tON and VIN gives a nearly constant switching frequency as V IN is varied. RON should be selected such that the on-time at maximum VIN is greater than 150ns.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION Following is a typical waveform showing the boundary condition. Transition Mode Operation VIN = 24V, VOUT = 3.3V, IOUT = 0.35A VOUT=3.3V 500 mA/Div 2 µs/Div The inductor internal to the module is 10μH. This value was chosen as a good balance between low and high input voltage applications.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION Power Loss: VIN = 24V @ TAMB = 85°C 1.8 Power Loss [W] 1.6 VOUT = 5.0V VOUT = 3.3V VOUT = 2.5V VOUT = 1.8V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.4 1.2 0.8 1.6 2.0 Output Current [A] To achieve this thermal resistance the PCB is required to dissipate the heat effectively. The area of the PCB will have a direct effect on the overall junction-to-ambient thermal resistance.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module J CIRCUIT DESCRIPTION VIN VIN VOUT High di/dt CIN VOUT COUT Power Module AGND Loop 2 Loop 1 1: Minimize area of switched current loops. From an EMI reduction standpoint, it is imperative to minimize the high di/dt paths during PC board layout.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module K BLOCK DIAGRAM Power Module 0.47µF Linear Regulator CVCC CBOOST 10µH VOUT VIN HSS RON FB Controller/ Power Control/ Protection Circuitry LSS PGND SS EN AGND Data Sheet Würth Elektronik eiSos GmbH & Co. KG - REV 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module L PIN CONFIGURATION Exposed Pad = PGND 3 4 5 6 7 FB 2 VOUT 1 SS Connect to AGND 6 EN AGND VIN RON 7 Top View 7 pin PFM M DETAILED PIN DESCRIPTION PIN # PIN SYMBOL TYPE 1 VIN PWR 2 RON I 3 EN I 4 AGND PWR 5 SS I 6 FB I 7 VOUT O EP EP Exposed Pad PIN DESCRIPTION The supply input pin is a terminal for unregulated input voltage source.
1020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module N PROTECTIVE FEATURES OUTPUT OVER-VOLTAGE PROTECTION (OVP) The voltage at FB is compared to a 0.92V internal reference. If FB rises above 0.92V the on-time is immediately terminated. This condition is known as over-voltage protection (OVP). It can occur if the input voltage is increased very suddenly or if the output load is decreased very suddenly.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module O APPLICATIONS The MagI³C power module for high output voltage is easy-to-use DC-DC solutions capable of driving up to a 2A load with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. They are available in an innovative package that enhances thermal performance and allows for hand or machine soldering.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module O2 APPLICATIONS CIRCUIT VIN VIN VOUT VOUT Module RON RON Enable EN CFF FB AGND SS CIN O2a RFBT CSS RFBB COUT Bill of Materials for Design Example 2: Recommended component values: TA = 25°C, IOUT = 2A Vout 5V 3.3V RFBT 5.62kΩ 3.32kΩ RFBB 1.07kΩ 1.07kΩ RON 100kΩ 61.9kΩ CIN COUT CSS CFF VIN 7.5-42V 6.5-42V 2.5V 2.26kΩ 1.07kΩ 47.5kΩ 1.8V 1.87kΩ 1.5kΩ 32.4kΩ 1.5V 1.00kΩ 1.13kΩ 28.0kΩ 1.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module P PHYSICAL DIMENSIONS (mm) recommended soldering pad solder past recommendation 150µm Data Sheet Würth Elektronik eiSos GmbH & Co. KG - REV 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module Q DOCUMENT HYSTORY DOCUMENT HISTORY Revision Date 0.1 08.02.2013 0.2 11.10.2013 Description Preliminary version Page 4: Efficiency fitted Page 7: Diagram Transient Response fitted Page 18: Schematic corrected Data Sheet Würth Elektronik eiSos GmbH & Co. KG - REV 0.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module CAUTIONS AND WARNINGS The following conditions apply to all goods within the product series of MagI³C of Würth Elektronik eiSos GmbH & Co. KG: General: All recommendations according to the general technical specifications of the data-sheet have to be complied with. The disposal and operation of the product within ambient conditions which probably alloy or harm the component surface has to be avoided.
171020601/WPMDH1200601J MagI³C Power Module Product Family VDRM - Variable Step Down Regulator Module IMPORTANT NOTES The following conditions apply to all goods within the product range of Würth Elektronik eiSos GmbH & Co. KG: 1. General Customer Responsibility Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitability for certain application areas.