Evaluation platform for RBB10 buck/boost regulators Features Input voltage can be lower, higher or the same as output voltage Evaluation Module Class B EMC filter layout Evaluation Built-in thermal management Easy evaluation of modes, trimming, enable and Module RBB10-2.0-EVM-1 sensing fufnction of the RBB10 modules Description The RBB10-2.0-EVM-1 evaluation board generates a regulated output voltage with a current up to 4A from an external DC supply which can be higher, lower or the same as the set output voltage. The output voltage is preset to 3.3V or 5V but can be adjusted between 1.0V and 5.5V using on-board resistors. All of the functions of the RBB10-2.0 regulator such as the different operating modes, output trim, enable, and the sense input can be easily evaluated using the break out connectors. Typical applications that can be evaluated include: USB voltage converter/regenerator: 3.3V or 5V output from a 3.3V (+60%/-30%) or from a 5V (+10%/-50%) supply. A stable output voltage can be regenerated even if the input voltage is outside of the USB voltage specification. With a regulated supply voltage, the following continuous output current limits apply: nom. Input Output Output (1) Voltage Voltage Current 3.3V 1.8V 4A max 3.3V 3.3V 2.8A max 3.3V 5V 2.2A max 5V 1.8V 4A max 5V 3.3V 4A max 5V 5V 3.2A max Notes: Note1: For detail information please refer to Safe Operating Area graph on page P-2 Battery stabiliser: the output can be set to deliver a stable 5V or 3.3V from a nominal 3V, 3.7V or 4.2V Lithium Ion or 3V/4.5V alkaline battery pack. In standby, the board consumes only 5A. Supercapacitor booster: the output can be set to deliver a stable 5V or 3.3V from a single supercapacitor (2.3V 2.7V) or from two supercapacitors wired in series (2.3V 5.4V). Low voltage regulator with sense: 1V, 1.2V, 1.8V or 2.5V output with up to 4A current. Selection Guide Part Input Output Output Number Voltage Range Voltage Current VDC VDC A RBB10-2.0-EVM-1 2.3 - 5.5 1.0 - 5.5 2.0 (5VDC preset) (4.0 buck mode) www.recom-power.com REV.: 2/2020 P-1RBB10-2.0-EVM-1 Evaluation Module Specifications (measured Ta= 25C, full load after warm up unless otherwise stated) Quick Start Guide 1) Connect Sense to the required potential. The Sense input is via R3 directly at the power module output. To compensate for ohmic losses of the filter, desolder the R3 resistor and move it to the position of R4. If you want to sense directly on the load, desolder R3 and connect the middle pin of Con 2 to the positive potential of the load with a separate connection. 2) If a different output voltage is required, fit R5 or R6. 3) Connect Con1 to a DC power supply and check output voltage. 4) Connect Con2 to the load. 5) Enable the device on Con3. The converter is normally on. You can disable the converter by pulling the Enable pin to GND with a switch, open collector driver or logic input. R1 or R2 can be used to change the default function from normally on to normally off. 6) Modes: The RBB10-2.0 has the possibility to work in two regulation modes: 6.1) Powersave Mode (standard) This mode is the best for use at low loads to reduce power consumption and extend battery life. In this mode the internal power consumption is reduced by using burst mode for loads under 350mA and PWM for loads above 350mA. The drawback is a 1-3 % higher output voltage at low load than full load. 6.2) Fixed PWM mode In PWM mode the device accurately regulates the output voltage independently of the load current. The drawback is a higher internal power consumption and shorter battery life at lower loads. Pull down the Mode pin on Con4 to GND or solder a 0 resistor a position R7 to enter this mode. Safe Operating Area 4.5 4.0 3.5 3.0 2.5 2.0 1.5 5.5Vout 1.0 5.0Vout 3.3Vout 0.5 1.0Vout 0 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 3.3 3.6 5.0 Input Voltage VDC www.recom-power.com REV.: 2/2020 P-2 Output Current A