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(R) SP6660 Evaluation Board Manual s Easy Evaluation for the SP6660 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 SP6660 Doubler and 5V LDO Regulator s Smallest Industry "660" Pinout available with SOIC package Approx. 2 X Full Scale DESCRIPTION The SP6660 Evaluation Board is designed with 2 complete SP6660 circuits on one board to help the user evaluate the performance of the SP6660 in both Inverter and Doubler modes. The evaluation board provides easy probe access points to all SP6660 Inputs and Outputs so that the user can quickly connect and measure electrical characteristics and waveforms of the Inverter or Doubler. The SP6660 Evaluation Board also provides a 3V to 5V 150mA DC to DC Converter using the SP6660 Doubler Circuit and a 5V LDO Regulator. The next two sections describe the SP6660 Board Layout and Using the SP6660 Evaluation Boards. A table of SP6660 Pin Assignments is also included with details on Input/Output pin function. An SP6660 Evaluation Board List of Materials table is provided with some manufacturers part numbers to use as a reference. Finally, a schematic of the SP6660 Evaluation Board is included. SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 1 BOARD LAYOUT The SP6660 Evaluation Board has been designed to conveniently provide access to all Inputs and Outputs of the SP6660 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. 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 +4.25V. 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 -4.25V. 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; any connection to this pin may induce capacitance which will change the frequency (1/RoscCosc). For this reason the SP6660 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 1/2 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 the circuits can typically perform up to oscillator frequencies of 800kHz. USING THE EVALUATION BOARD Connect the SP6660 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 +4.25V. 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 +8.5V. GND -- U1-5 -- Connect to Load, Meter or Scope GND. FC -- U1-1 -- Connect to OPEN for Low Frequency, to VOUT for High Frequency. SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 2 Table of SP6660EB Pin Assignments Pin # Pin Name Pin Function 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 CapacitorGND (Doubler Mode) to VIN (Doubler Mode) Oscillator Control Pin VOUT (Doubler Mode) 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 U3 - Inverter Circuit 1 2 3 4 5 6 7 8 FC CAP+ GND CAPOUT LV OSC V+ Frequency Control Pump Capacitor+ GND (Inverter Mode) Pump CapacitorOUT (Inverter Mode) to GND (Inverter Mode) Oscillator Control Pin VIN (Inverter Mode) Vin VOUT FC CAP+ GND +5 GND VOUT GND . FC CAP+. Vin Input/Output Pin Name SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 3 Table of SP6660EB List of Materials Ref. Des. U1, 3 U2 C1-3, 6-8 C4 C5 D1 Part Number SP6660CU LM2985AIM5-5.0 TPSD157M010R100 1206-YG-475Z 1206-3A-103K MMBD701LT1 R30 Manufacturer Sipex Corp. National Semi. AVX Corp. AVX Corp. AVX Corp. Motorola Vector Component Inverter/Doubler SOIC 5V LDO Reg. SOT23-5 Tant. SM Low ESR 150F Y5V Ceramic SM 4.7F NPO Ceramic SM 10nF Schottky Diode SOT23-3 Socket Pins Qty. 2 1 6 1 1 1 14 SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 4 SP6660 Evaluation Board Schematic DOUBLER VIN GND CAP+ + D1 1 FC SP6660 V+ 8 2 CAP+ OSC 7 3 GND LV 6 4 CAPOUT 5 C2 150F + Tant. C3 150F Tant. + C1 150F Tant. VOUT 1 VIN LP2985 VOUT 5 2 GND 3 ON/OFF_N BYPASS 4 C4 4.7F Cer. +5 GND GND C5 10nF Cer. FC INVERTER VIN GND CAP+ + C8 150F Tant. + C6 150F Tant. VOUT 1 FC SP6660 V+ 8 2 CAP+ OSC 7 3 GND LV 6 4 CAPOUT 5 + C7 150F Tant. GND FC NOTE: PROBE ACCESS POINTS AS SHOWN: ARE FOR EXTERNAL VIN CONNECTIONS BY THE USER. SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 5 ORDERING INFORMATION Model Package SP6660EB ................................................................................................................ SP6660 Evaluation Board 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 hereing; neither does it convey any license under its patent rights nor the rights of others. SP6660EB/06 SP6660 Evaluation Board Manual (c) Copyright 2000 Sipex Corporation 6 |
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