CS5150 Cherry Semiconductor Corporation, CS5150 Datasheet
CS5150
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CS5150 Summary of contents
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... CC grammable soft start capability. The CS5150 is upward compatible with the 5-bit CS5155, allowing the mother board designer the capabili using either the CS5150 or the CS5155 with no change in layout. The CS5150 is available in 16 pin surface mount and DIP packages. ® Pro processor 5V 1200µ ...
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Pin Name .16V/-0.3V . ...
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Electrical Characteristics: 0°C < ID0 ID3 GATE(L) PARAMETER DAC: continued ID3 ID2 ID1 ID0 ...
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Electrical Characteristics: 0°C < ID0 ID3 GATE(L) PARAMETER Time Out Timer Time Out Time Fault Mode Duty Cycle Note 1: Guaranteed by design, not 100% tested in production. PACKAGE PIN # PIN ...
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V Monitor CC1 Comparator V - CC1 + 3.90V 3.85V SS V ID0 V ID1 Error 4 BIT Amplifier DAC + V ID2 V ID3 - Slow Feedback V FB COMP Fast Feedback V FFB LGnd 1V Theory of Operation ...
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... Trace 1 - Regulator Output Voltage (1V/div.) Trace 2 - Inductor Switching Node (2V/div.) Trace 3 - 12V input (V Trace Input (1V/div.) Figure 2: CS5150 demonstration board startup in response to increasing 12V and 5V input voltages. Extended off time is followed by normal off time operation when output voltage achieves regulation to the error amplifier output. ...
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... Figure 4). Trace 1 - Regulator Output Voltage (5V/div.) Trace 2 - Inductor Switching Node (5V/div.) Figure 4: CS5150 demonstration board enable startup waveforms. Normal Operation During normal operation, switch off time is constant and set by the C capacitor ...
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... Trace 1 - Regulator Output Voltage (1V/div.) Trace 3 - Regulator Output Current (20V/div.) Figure 7: CS5150 demonstration board response to a 0.5 to 13A load pulse (output set for 2.8V). Trace 1 - Regulator Output Voltage (1V/div.) Trace 2 - Inductor Switching Node (5V/div.) Trace 3 - Output Current (0 ...
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... Trace Supply Voltage (2V/div.) Trace 3 - Soft Start Timing Capacitor (1V/div.) Trace 2 - Inductor Switching Node (2V/div.) Figure 10: CS5150 demonstration board hiccup mode short circuit pro- tection. Gate pulses are delivered while the soft start capacitor charges, and cease during discharge. Trace from PC Power Supply (2V/div.) Trace 2 = Inductor Switching Node (2V/div ...
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... Trace 2 = Power Good Signal (2V/div.) Figure 16: CS5150 demonstration board during power up. Power Good signal is activated when output voltage reaches 1.70V. Selecting External Components The CS5150 can be used with a wide range of external power components to optimize the cost and performance particular design. The following information can be used as general guidelines to assist in their selection ...
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... GATE(H) IN Trace (10V/div.) GATE(L) Trace 2 = Inductor Switching Node (5V/div.) Figure 17: CS5150 gate drive waveforms depicting rail to rail swing. The most important aspect of MOSFET performance is RDS , which effects regulator efficiency and MOSFET ON thermal management requirements. The power dissipated by the MOSFETs may be estimated as follows ...
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Input and Output Capacitors These components must be selected and placed carefully to yield optimal results. Capacitors should be chosen to pro- vide acceptable ripple on the input supply lines and regula- tor output voltage. Key specifications for input capacitors ...
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... Tantalum Si9410 Connect to other circuits for current sharing 13 3.3V 12V + 33µF/25V x 3 Tantalum Si9410 CC2 CC1 GATE(H) 5µH V ID0 V ID1 ID2 CS5150 + V ID3 C OFF Si9410 V GATE(L) SS PGnd 3.3k COMP V FFB LGnd 100pF 2.5V/7A 100µF/10V x 2 Tantalum ...
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... PDIP 19.69 REF: JEDEC MS-012 3.68 (.145) 2.92 (.115) REF: JEDEC MS-001 Ordering Information Part Number Description CS5150GD16 16L SO Narrow CS5150GDR16 16L SO Narrow (tape & reel) CS5150GN16 16L PDIP Rev. 1/4/99 Package Specification D Thermal Data English R Min Max Min ΘJC 9.80 ...