RT8113 RICHTEK [Richtek Technology Corporation], RT8113 Datasheet
RT8113
Related parts for RT8113
RT8113 Summary of contents
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... Single Phase VR11.1 PWM Controller with 7-bit VID General Description The RT8113 is a single-phase PWM buck controller with one integrated MOSFET driver for advanced microprocessor applications such as Atom V Ibexpeak Graphic Power. This controller maintains the same features as the multi-phase product family. However, it reduces the output to one phase for lower current systems ...
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... RT8113 Typical Application Circuit Exposed Pad (25) Function Block Diagram OFS FB RT/EN VID [7:1] FBRTN SS PGOOD www.richtek.com 2 Offset Transient Response Enhancement - EA + Modulation Waveform Generator EAP VR11 VID + - Table VID Off OV Soft Start OC and Control MOSFET Driver Fault Logic POR VCC12 Fault Logic Driver MOSFET ...
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... Bootstrap Power Pin. This pin powers the high-side MOSFETs drivers. Connect this pin to the junction of the bootstrap capacitor with the cathode of the bootstrap diode. Power Good Indicator. Ground Pin. The exposed pad must be soldered to a large PCB and connected to AGND for maximum power dissipation. RT8113 Pin Function www.richtek.com 3 ...
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... RT8113 VID7 VID6 VID5 ...
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... RT8113 Nominal Output Voltage DACOUT VID1 0 1.11250V 1 1.10000V 0 1.08750V 1 1.07500V 0 1.06250V 1 1.05000V 0 1.03750V 1 1.02500V 0 1.01250V 1 1.00000V 0 0.98750V 1 0.97500V 0 0.96250V 1 0.95000V 0 0.93750V 1 0.92500V 0 0.91250V 1 0 ...
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... RT8113 VID7 VID6 VID5 www.richtek.com 6 Table 1. Output Voltage Program Pin Name VID4 VID3 VID2 ...
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... VCC5 Rising Threshold V CC5_TH VCC5 Hysteresis V CC5_HY DS8113-02 April 2011 (Note 1) (Note 4) Test Conditions I = 10mA LOAD VCC12 Rising VCC12 Falling VCC5 Rising VCC5 Falling RT8113 − 0.3V 0.3V) PHASE BOOT − 5V 5V) PHASE BOOT + 0.3V 5V) CC − 40°C to 125°C − 40°C to 85°C ...
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... RT8113 Parameter Symbol RT/EN Chip Disable Threshold V Running Frequency f OSC RT Pin Voltage V RT Pin Voltage V Modulation Gain A Reference Voltage Accuracy DAC Accuracy Logic-Low V VID Threshold Voltage Logic-High V Error Amplifier DC Gain A Gain-Bandwidth GBW Slew Rate SR Output Voltage Range V Maximum Current I EA_SLEW Power Sequence ...
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... Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. DS8113-02 April 2011 Test Conditions 3000pF iss = 25° high effective thermal conductivity four-layer test board of A RT8113 Min Typ Max Unit -- 160 -- °C - ...
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... RT8113 Typical Operating Characteristics Start Up from RT/EN V OUT (1V/Div) RT/EN (2V/Div) PGOOD (2V/Div) UGATE (20V/Div) Time (1ms/Div) Dynamic VID Up VID from 0.675V up to 1.3V OUT (500mV/Div) VID1 (1V/Div) Time (40μs/Div) Load Transient Response VID = 1.3V, f LOAD 1.2V -> 20A I LOAD 7A Time (10μs/Div) www.richtek.com 10 VID = 0.9V, I ...
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... Over Current Protection V OUT (1V/Div) PGOOD (5V/Div) I LOAD (50A/Div) UGATE (50V/Div) Time (200μs/Div) DS8113-02 April 2011 Over Voltage Protection V FB (1V/Div) PGOOD (5V/Div) UGATE (20V/Div) LGATE (10V/Div) Time (20μs/Div) RT8113 www.richtek.com 11 ...
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... Chip Enable The enable function of the RT8113 is combined in the RT/EN pin. Besides frequency setting function, pulling the RT/EN pin to GND can also force the RT8113 to enter soft shutdown sequence recommended to connect a control switch from the RT/EN pin to GND in parallel with RT setting resistors. The RT8113 will enter soft shutdown sequence when the control switch is turned on ...
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... After V ramps the RT8113 stays in this state OUT BOOT for 800μ waiting for valid VID code sent by CPU. D3 After receiving valid VID code down to the voltage specified by VID code. After V − V ramps the RT8113 stays in this EAP ...
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... OUT BOOT OUT DAC Output Voltage Differential Sensing The RT8113 uses a high-gain low-offset error amplifier for ) differential sensing. The CPU voltage is sensed between OUT the FB and FBRTN pins. A resistor (R pin with the positive remote sense pin of the CPU (V while the FBRTN pin connects directly to the negative ...
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... V drops below “V is controlled to be very FB voltage (~40mV), the quick response indicator QR rises up. When QR = high, the RT8113 turns on all high side to be lower than FB MOSFETs and turns off all low side MOSFETs. The sensitivity of quick response can be adjusted by varying the values of C will make QR easier to be triggered ...
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... X R CSN CSA: Current Sense Amplifier I X www.richtek.com 16 700nA is a typical value of the CSA input offset current. V OFS-CSA the RT8113 is smaller than +/- 1.5mV. Usually, “V + 700n x (R light load and the equation can be simplified as the equation below : CSP S CSN ...
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... ADJ the load line. The temperature coefficient of R compensates the temperature effect of the load line. The load line function of the RT8113 can be disabled by connecting the RT/EN pin resistor to VCC5 instead of GND. When the RT/EN pin resistor is connected to VCC5, the current-sense circuit works normally while V ...
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... RT8113 OSC Driver PWM Comparator - ΔV Driver OSC + Z FB COMP - EA + REF COMP REF Figure 9. Compensation Circuit 1) Modulator Characteristic The modulator consists of the PWM comparator and power stage. The PWM comparator compares error amplifier EA output (COMP) with oscillator (OSC) sawtooth wave to provide a pulse-width modulated (PWM) gate-driving signal ...
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... T is the maximum junction temperature, T J(MAX) the ambient temperature and θ JA thermal resistance. For recommended operating conditions specification of the RT8113, the maximum junction temperature is 125°C and T is the ambient temperature. The junction to ambient A thermal resistance θ is layout dependent. For JA WQFN-24L 4x4 packages, the thermal resistance θ ...
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... Kelvin sense. The current-sense feedback loops have to be routed away from switching elements, and the current-sense RC elements have to be put near their respective ISN or ISP pins of the RT8113 and also away from noise switching elements. At lease 10 mm width is suggested for current sense feedback loops. ...
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... Tel: (8862)86672399 Fax: (8862)86672377 Email: marketing@richtek.com DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0.028 0.031 0.000 0.002 0.007 0.010 0.007 0.012 0.156 0.159 0.091 0.108 0.156 0.159 0.091 0.108 0.020 0.014 0.018 RT8113 1 2 www.richtek.com 21 ...