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| (R) SP6661 Evaluation Board Manual s Easy Evaluation for the SP6661 Inverter/Doubler 200mA Charge Pump s Only 0.25 sq. in. of Board Space needed for Inverter or Doubler s 3V to 5V Converter using SP6661 Doubler and 5V LDO Regulator s Smallest Industry '660 Pinout available with SOIC 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 (c) Copyright 2001 Sipex Corporation 1 SP6661 EVALUATION BOARD 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. 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. 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. FC -- U1-1 -- Connect to OPEN for Low Frequency, to VOUT for High Frequency. Evaluating Doubler Circuit with 5V LDO Regulator Same connections as Doubler above, but with additional LDO outputs: +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. 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. 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. (c) Copyright 2001 Sipex Corporation rev. 4/12/01 SP6661 Evaluation Board Manual 2 TABLE OF SP6661EB PIN ASSIGNMENTS Pin No. Pin Name Pin Function Input/Output Pin Name U1 - Doubler Circuit 1 2 3 4 5 6 7 8 FC CAP+ GND CAPOUT LV OSC V+ Frequency Control Pump Capacitor + VIN (Doubler Mode) Pump Capacitor GND (Doubler Mode) to VIN in Doubler Oscillator Control Pin VOUT (Doubler Mode) VOUT GND FC CAP+ VIN U2 - LDO Regulator Circuit 1 2 3 4 5 VIN GND ON/OFF_N BYPASS VOUT VIN of LDO GND of LDO ON to Vin of LDO Bypass Cap C5 to GND +5V Output of LDO +5 GND U3 - Inverter Circuit 1 2 3 4 5 6 7 8 FC CAP+ GND CAPOUT LV OSC V+ Frequency Control Pump Capacitor + GND in Inverter Pump Capacitor OUT in Inverter to GND in Inverter Oscillator Control Pin VIN in Inverter VIN VOUT FC CAP+ GND rev. 4/12/01 SP6661 Evaluation Board Manual (c) Copyright 2001 Sipex Corporation 3 TABLE OF SP6661EB LIST OF MATERIALS Ref. Des. Qty. Manufacturer Part Number Layout Size Component Vendor Phone Number PCB U1, 3 U2 C1,3,4,6-8 C2 D1 1 2 1 6 1 1 14 Sipex Corp. Sipex Corp. Sipex Corp TDK Corp. TDK Corp. On-Semi Vector 146-6363 SP6661EU SP6201EM5-5.0 C2012X5R1A335K C3216X5R1A335K MBR0530 R30 1.5"x1.5" 8-uSOIC SOT23-5 0805 1206 SOD-123 PCB Inverter & Doubler Inverter/Doubler uSOIC 5V LDO Reg. SOT23-5 3.3uF 6.3V Ceramic X5R SM 3.3uF 10V Ceramic X5R SM Schottky Diode SM Socket Pins 978-667-7800 978-667-7800 978-667-7800 847-803-6400 847-803-6400 800-DIGI-KEY SP6661 EVALUATION BOARD SCHEMATIC +5V VIN C3 3.3F cer. VOUT LDO 1 VIN GND VOUT Doubler 1 2 C1 3.3F cer. 3 4 FC CAP+ GND CAP(R) 5 GND V+ OSC 8 7 6 5 C4 3.3F cer. SP6661 C2 GND 3.3F cer. 2 3 SP6201 RESET_N GND 4 ON/OFF_N LV OUT CAP+ FC VIN C8 3.3F cer. VOUT Inverter 1 2 C6 3.3F cer. 3 4 FC CAP+ GND CAP(R) V+ OSC 8 7 6 5 C7 3.3F cer. GND GND SP6661 LV OUT CAP+ FC Note Probe access points as shown are for external connections by the user. rev. 4/12/01 SP6661 Evaluation Board Manual (c) Copyright 2001 Sipex Corporation 4 ORDERING INFORMATION Part Number Temperature Range Package SP6661UEB ............................................................................................ SP6661 Evaluation Board SP6661EU ............................................ -40C to +85C .............................................. 8-pin SOIC 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: sales@sipex.com 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 (c) Copyright 2001 Sipex Corporation 5 |
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