SC1175CSW Semtech Corporation, SC1175CSW Datasheet
SC1175CSW
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SC1175CSW Summary of contents
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POWER MANAGEMENT Description The SC1175 is a versatile 2 phase, synchronous, volt- age mode PWM controller that may be used in two dis- tinct ways. First, the SC1175 is ideal for applications where point of use output power exceeds any ...
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POWER MANAGEMENT Typical Application Circuit 2 Channels with Current Sharing 2004 Semtech Corp. 2 SC1175 www.semtech.com ...
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POWER MANAGEMENT Absolute Maximum Rating Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...
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POWER MANAGEMENT Electrical Characteristics (Cont.) Unless Specified 4.75 to 5.25V, GND = PGND = 0V ...
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POWER MANAGEMENT Pin Configuration Top View (SOIC-20 and TSSOP-20 Pin) Pin Descriptions Expanded Pin Description Expanded Pin Description Expanded Pin Description Expanded Pin Description Expanded Pin Description Pin 1: Pin 1: Pin 1: Pin 1: (VREF) Pin 1: Internal 1.25V ...
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POWER MANAGEMENT Block Diagram NOTES (1) Block 1 (top) is the Master and Block 2 (bottom) is the Slave in current sharing configuration. (2) For independant operation there is no Master or Slave. Applications Information - Theory of Operation Main ...
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POWER MANAGEMENT Applications Information - Theory of Operation their own current limits, identical to the independent channel case. Power Good The controller provides a power good signal. This is an open collector output, which is pulled low if the output ...
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POWER MANAGEMENT Typical Characteristics - 2 Channels with Current Sharing Figure 1: Figure 1: Figure 1: Figure 1: V Figure OUT IN(5V) Figure 2: Figure 2: Figure 2: Figure 2: Figure OUT IN(5V) ...
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POWER MANAGEMENT Typical Characteristics - 2 Channels with Current Sharing (Cont.) Figure 3: Figure 3: Figure 3: Figure 3: Figure OUT IN(5V) Figure 4: Figure 4: V Figure Figure 4: Figure 4: OUT ...
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POWER MANAGEMENT Typical Characteristics - 2 Channels with Current Sharing (Cont.) Figure 5: Efficiency data - current sharing mode. Figure 5: Figure 5: Figure 5: Figure 5: 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 The ...
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POWER MANAGEMENT Evaluation Board Schematic - 2 Channel with Current Sharing 2004 Semtech Corp. 11 SC1175 www.semtech.com ...
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POWER MANAGEMENT Evaluation Board Bill of Materials - 2 Channels with Current Sharing ...
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POWER MANAGEMENT Evaluation Board Gerber Plots - 2 Channels with Current Sharing 2004 Semtech Corp. Top Side Traces Bottom Side Traces 13 SC1175 www.semtech.com ...
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POWER MANAGEMENT Typical Characteristics - 2 Independent Channels Figure 6: Figure 6: Figure 6: Figure 6: Figure 6: Figure 7 Figure 7 : Output Current : Output Current Figure 7 Figure 7 Figure 7: Output Current : Output Current : ...
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POWER MANAGEMENT Typical Characteristics - 2 Independent Channels (Cont.) Figure 8: Figure 8: Figure 8: Figure 8: Peak - Peak Output Ripple @ 5A Figure 8: IInput Voltage = 12V. Output Voltage = 2.0V Figure 9: Phase Node 12V Input ...
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POWER MANAGEMENT Typical Characteristics - 2 Independent Channels (Cont.) Figure 10: Start-up Power On Figure 10: Start-up Power On Figure 10: Start-up Power On Figure 10: Start-up Power On Figure 10: Start-up Power On Chan Output Current. 2A/DIV. ...
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POWER MANAGEMENT Typical Characteristics - 2 Independent Channels Efficiency Test Figure 12: Figure 12: Figure 12: Figure 12: Figure 12: 100 The Independent Channels Evaluation Board is not intended for a specific application. ...
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POWER MANAGEMENT Evaluation Board Schematic - 2 Independent Channels 2004 Semtech Corp. 18 SC1175 www.semtech.com ...
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POWER MANAGEMENT Evaluation Board Bill of Materials - 2 Independent Channels ...
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POWER MANAGEMENT Evaluation Board Gerber Plots - 2 Independent Channels 2004 Semtech Corp. Top Side Traces Bottom Side Traces 20 SC1175 www.semtech.com ...
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POWER MANAGEMENT Power and signal traces must be kept separated for noise considerations. Feedback, current sense traces and analog ground should not cross any traces or planes carrying high switching currents, such as the input loop or the phase node. ...
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POWER MANAGEMENT Outline Drawing - TSSOP-20 2X E/2 PIN 1 INDICATOR ccc C 2X N/2 TIPS aaa C SEATING PLANE C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- 3. DIMENSIONS "E1" AND "D" DO ...
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... POWER MANAGEMENT Outline Drawing - SO-20 Contact Information 2004 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 23 SC1175 www.semtech.com ...