SP6661 ® Evaluation Board Manual ■ Easy Evaluation for the SP6661 Inverter/Doubler 200mA Charge Pump ■ Only 0.25 sq. in. of Board Space needed for Inverter or Doubler ■ 3V to 5V Converter using SP6661 Doubler and 5V LDO Regulator ■ Smallest Industry ’660 Pinout available with µSOIC package Approx. 2 X Full Scale DESCRIPTION The SP6661 Evaluation Board is designed with 2 complete SP6661 circuits on one board to help the user evaluate the performance of the SP6661 in both Inverter and Doubler modes. The evaluation board provides easy probe access points to all SP6661 Inputs and Outputs so that the user can quickly connect and measure electrical characteristics and waveforms of the Inverter or Doubler. The SP6661 Evaluation Board also provides a 3V to 5V 150mA DC to DC Converter using the SP6661 Doubler Circuit and a 5V LDO Regulator. The next two sections describe the SP6661 Board Layout and Using the SP6661 Evaluation Boards. A table of SP6661 Pin Assignments is also included with details on Input/Output pin function. A SP6661 Evaluation Board List of Materials table is provided with some manufacturers part numbers to use as a reference. Finally, a schematic is included of the SP6661 Evaluation Board. rev. 4/12/01 SP6661 Evaluation Board Manual 1 © Copyright 2001 Sipex Corporation SP6661 EVALUATION BOARD Evaluating Doubler Circuit with 5V LDO Regulator Same connections as Doubler above, but with additional LDO outputs: BOARD LAYOUT The SP6661 Evaluation Board has been designed to easily and conveniently provide access to all Inputs and Outputs of the SP6661 device under test. Position the board with the silkscreen lettering upright (also see the drawing on the front page of this manual) and you will see two circuits – the Doubler Circuit on top, and the Inverter Circuit below. Also, note the Doubler Circuit is followed by an LDO Circuit, producing a 5V regulated output from a 3V input to the Doubler. The Input and Output connections are made with raised female pin receptacles which can accommodate easy-hook connection leads for power and meter connections, as well as scope probe hooks and grounds for waveform measurements. +5 — U2-5 — Connect to Load, Meter or Scope. VOUT = +5.0V. GND — U2-2 — Connect to Load, Meter or Scope GND. Evaluating Inverter Circuit VIN — U3-8 — Connect to external supply VIN = +1.5 to +5.0V. GND — U3-3 — Connect to external supply GND. CAP+ — U3-2 — Use to monitor Charge Pump Frequency (1/2 OSC pin frequency). VOUT — U3-5 — Connect to Load, Meter or Scope. VOUT = -1.5 to –5.0V. USING THE EVALUATION BOARD Connect the SP6661 Evaluation Board Doubler Circuit or Inverter Circuit to a positive power supply for VIN. It is good practice to not switch power on until power connections are made to the evaluation board. GND — U3-3 — Connect to Load, Meter or Scope GND. FC — U3-1 — Connect to OPEN for Low Frequency, to VOUT for High Frequency. Evaluating Oscillator Performance with Inverter or Doubler Circuit To accurately measure the internal oscillator frequency at pin 7 is extremely difficult, since any connection to this pin may induce capacitance which will change the frequency (1/RoscCosc). It is for this reason that the SP6661 Evaluation Board has only a small pad connection to it and not a pin receptacle. Alternatively, you can measure the charge pump frequency at the CAP+ pin, which equals _ the OSC pin frequency. Evaluating Doubler Circuit VIN — U1-3 — Connect to external supply VIN = +2.5 to +5.0V. GND — U1-5 — Connect to external supply GND. CAP+ — U1-2 — Use to monitor Charge Pump Frequency (1/2 OSC pin frequency). VOUT — U1-8 — Connect to Load, Meter or Scope. VOUT = +5.0 to +10.0V. GND — U1-5 — Connect to Load, Meter or Scope GND. To run the Inverter or Doubler Circuit at other frequencies, the OSC pin can be driven with an external oscillator with a square wave of 0 to VIN volts. Tests have shown that typically the circuits can perform up to oscillator frequencies of 900kHz. FC — U1-1 — Connect to OPEN for Low Frequency, to VOUT for High Frequency. rev. 4/12/01 SP6661 Evaluation Board Manual 2 © Copyright 2001 Sipex Corporation TABLE OF SP6661EB PIN ASSIGNMENTS Pin No. Pin Name Pin Function Input/Output Pin Name U1 - Doubler Circuit 1 FC Frequency Control FC 2 CAP+ Pump Capacitor + CAP+ 3 GND VIN (Doubler Mode) VIN 4 CAP- Pump Capacitor - 5 OUT GND (Doubler Mode) 6 LV to VIN in Doubler 7 OSC Oscillator Control Pin 8 V+ VOUT (Doubler Mode) GND VOUT U2 - LDO Regulator Circuit 1 VIN VIN of LDO 2 GND GND of LDO 3 ON/OFF_N ON to Vin of LDO 4 BYPASS Bypass Cap C5 to GND 5 VOUT +5V Output of LDO GND +5 U3 - Inverter Circuit 1 FC Frequency Control FC 2 CAP+ Pump Capacitor + CAP+ 3 GND GND in Inverter GND 4 CAP- Pump Capacitor - 5 OUT OUT in Inverter 6 LV to GND in Inverter 7 OSC Oscillator Control Pin 8 V+ VIN in Inverter rev. 4/12/01 SP6661 Evaluation Board Manual 3 VOUT VIN © Copyright 2001 Sipex Corporation TABLE OF SP6661EB LIST OF MATERIALS Ref. Des. Qty. Manufacturer Part Number Layout Size Component Vendor Phone Number PCB 1 Sipex Corp. 146-6363 1.5"x1.5" PCB Inverter & Doubler 978-667-7800 U1, 3 2 Sipex Corp. SP6661EU 8-uSOIC Inverter/Doubler uSOIC 978-667-7800 U2 1 Sipex Corp SP6201EM5-5.0 SOT23-5 5V LDO Reg. SOT23-5 978-667-7800 C1,3,4,6-8 6 TDK Corp. C2012X5R1A335K 0805 3.3uF 6.3V Ceramic X5R SM 847-803-6400 C2 1 TDK Corp. C3216X5R1A335K 1206 3.3uF 10V Ceramic X5R SM 847-803-6400 D1 1 On-Semi MBR0530 SOD-123 Schottky Diode SM 14 Vector R30 Socket Pins 800-DIGI-KEY SP6661 EVALUATION BOARD SCHEMATIC +5V VIN VOUT C3 3.3µF cer. Doubler GND C1 3.3µF cer. CAP+ 1 FC 2 CAP+ 3 GND 4 CAP- ® SP6661 V+ 8 OSC 7 LV 6 OUT 5 C2 GND 3.3µF cer. VIN 2 GND 3 ON/OFF_N VOUT 5 RESET_N 4 SP6201 C4 3.3µF cer. GND VOUT C8 3.3µF cer. Inverter GND C6 3.3µF cer. rev. 4/12/01 1 FC VIN CAP+ LDO 1 FC 2 CAP+ 3 GND 4 CAP- ® SP6661 V+ 8 OSC 7 LV 6 OUT 5 GND C7 3.3µF cer. FC SP6661 Evaluation Board Manual 4 Note Probe access points as shown are for external connections by the user. © Copyright 2001 Sipex Corporation ORDERING INFORMATION Part Number Temperature Range Package SP6661UEB ............................................................................................ SP6661 Evaluation Board SP6661EU ............................................ -40°C to +85°C .............................................. 8-pin µSOIC Corporation SIGNAL PROCESSING EXCELLENCE Sipex Corporation Headquarters and Sales Office 22 Linnell Circle Billerica, MA 01821 TEL: (978) 667-8700 FAX: (978) 670-9001 e-mail: [email protected] Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. rev. 4/12/01 SP6661 Evaluation Board Manual 5 © Copyright 2001 Sipex Corporation