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DC/DC CONVERTER CONTROLLERS
( OZ811, OZ812, OZ813, OZ826, OZ827, OZ828, OZ838 )
DC/DC converter controllers are a family of high efficiency products that power microprocessors and system peripherals. All DC/DC controllers include O2Micro's patent pending Constant-Ripple-Current™ technology plus, voltage feed-forward compensation.
FEATURES (OZ811)
- DC/DC SMPS controller with integrated drivers
- Constant-Ripple-Current control allows optimum inductor size
- High efficiency up to 94%; High light load efficiency of >85% at 100mA
- VOUT accuracy 1%
- Input voltage from 3V to 30V
- Output voltage adjustable from 0.5V to 2.75V
- Output current up to 30A
- User adjustable operating frequency
- Dynamic voltage change support
- Voltage feed-forward compensation
- Output Protection: latched over- and under-voltage, and Valley type over-current
- Input Protection: under-voltage lock out on VDDA and VIN
- Power Good and ON/SKIP signals
- Soft start at start-up with OCT protection
- Soft stop at shutdown
- 16 QFN package, lead-free
- OZ811 Short Form (PDF 182k)
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FEATURES (OZ812)
- DC/DC SMPS controller with integrated drivers for VDDQ
- Integrated Linear Regulator with 2A source and sink capability for VTT
- High efficiency up to 94%; High light load efficiency of >85% at 100mA
- VDDQ accuracy &#plusmn;1%
- Input voltage from 3V to 30V
- Output voltage: Preset values at 2.5V or 1.8V or adjustable from 0.5V to 2.75V
- Output current up to 15A
- Power Good and ON/SKIP signals
- Soft start and Soft-stop
- Voltage feed-forward compensation
- Constant-ripple-current control allows optimum inductor size
- Dynamic voltage change support
- Output Protection: latched over- and under-voltage, and Valley type over-current
- Input Protection: under-voltage lock out on VDDA and VIN
- Power Good and ON/SKIP signals
- 24 QFN package, lead-free
- OZ812 Short Form (PDF 123k)
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FEATURES (OZ813)
- Dual DC/DC SMPS controller with integrated drivers
- Two Constant-Ripple-Current controllers; allows optimum inductor size
- High full load efficiency up to 94%; High light load efficiency of >85% at 100mA
- VOUT accuracy &#plusmn;1%
- Input voltage from 3V to 26V
- Output voltage adjustable from 0.5V to 2.75V
- Output current up to 15A
- Independent Power Good and ON/SKIP signals
- Soft start at start up
- Soft stop at shutdown
- Voltage feed-forward compensation
- User adjustable operating frequency
- Dynamic voltage change support
- Output Protection: latched over- and under-voltage, and Valley type over-current
- Input Protection: under-voltage lock out on VDDA and VIN
- 24 QFN package, lead-free
- OZ813 Short Form (PDF 128k)
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FEATURES (OZ826)
- Dual Phase DC/DC controller with integrated drivers
- 6 bit AMD VID code compatible
- 1% output voltage accuracy
- 6V to 24V input supports 2s to 5s battery power
- Voltage feed-forward compensation
- High efficiency up to 94%; High light load efficiency of 80% at 200mA
- Non-audio skip mode
- Constant-Ripple-Current topology facilitates optimum inductor size
- Supports 60A output current
- Ultra-fast transient recovery
- Adjustable load line support
- Slew control at start-up and OTF VID changes
- True differential remote output voltage sensing
- AMD compliant Power Good signal
- VIN & VDDA under-voltage lock out protection
- Latched over-voltage protection
- Cycle-by-cycle over-current protection with latched time out
- 32 QFN package
- OZ826 Short Form (PDF 183k)
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FEATURES (OZ827)
- Single Phase DC/DC controller with integrated drivers
- 5 bit VID code
- 1% output voltage accuracy
- 5V to 24V input supports 2s to 5s battery power
- Voltage feed-forward compensation
- High efficiency up to 90%; High light load efficiency of 80% at 200mA
- Constant-Ripple-Current topology facilitates optimum inductor size
- Supports 20A output current
- Ultra-fast transient recovery
- Adjustable load line slope
- Slew control at start-up and any VID code
- True differential remote output voltage sensing
- VIN & VDDA under-voltage lock out protection
- Latched over-voltage protection
- Cycle-by-cycle over-current protection with latched time out
- 24 QFN package
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FEATURES (OZ828)
- Single Phase DC/DC controller with integrated drivers
- 5/6 bit AMD VID code compatible
- 1% output voltage accuracy
- 6V to 24V input supports 2s to 5s battery power
- Voltage feed-forward compensation
- High efficiency up to 94%; High light load efficiency of 80% at 200mA
- Non-audio skip mode
- Constant-Ripple-Current topology facilitates optimum inductor size
- Supports 36A output current
- Ultra-fast transient recovery
- Adjustable load line support
- Slew control at start-up and OTF VID changes
- True differential remote output voltage sensing
- AMD compliant Power Good signal
- VIN & VDDA under-voltage lock out protection
- Latched over-voltage protection
- Cycle-by-cycle over-current protection with latched time out
- 28 QFN package
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FEATURES (OZ838)
- Two independent Single Phase DC/DC controllers for AMD CPU core power planes
- Supports plane strapping (dual-phase configuration)
- Integrated drivers
- AMD serial VID code compliant
- Constant-ripple-current control method allows designing for optimum inductor size
- Highly efficient power conversion
- Highly efficient light load conversion via smart pulse skipping mode
- Ultra-fast transient recovery
- 1% output voltage accuracy
- Supports up to 36A output current (18A per phase)
- User-adjustable switching frequency and OCP limit
- User-adjustable slew control of VDD_CORE at start-up and OTF VID code changes
- True differential output voltage remote sensing
- Open drain Power Good signal
- Voltage feed-forward compensation
- VIN & VDDA under-voltage lockout protection
- Latched over-voltage protection
- Cycle-by-cycle over-current protection
- 32 QFN package
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