mic9130 Micrel Semiconductor, mic9130 Datasheet
mic9130
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mic9130 Summary of contents
Page 1
... It can achieve efficiencies over 90% at high output currents. Its low 1.3mA quiescent current allows high efficiency even at light loads. The MIC9130 has a maximum duty cycle of 50%. For de- signs requiring a high duty cycle, refer to the MIC9131. The MIC9130 is available in a 16-pin SOP and 16-pin QSOP package options. The rated junction temperature range is from – ...
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... SOP (M) 16-Pin QSOP (QS) Pin Function Line (Input): 180Vdc maximum supply input. May be floated if unused. Supply (Input): MIC9130 internal supply input. Bias Resistor (External Component): Connect 562KΩ to ground. Oscillator RC Network (External Components): Connect external resistor- capacitor network to set oscillator frequency. ...
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... MIC9130 Absolute Maximum Ratings Line Input Voltage (V ) ......................................... +190V LINE V Input Voltage (V ) .............................................. +19V CC CC Current Sense Input Voltage (V ISNS Enable Voltage (V ) ............................ –0 Feedback Input Voltage (V ) ........................ –0.3 to +5.3V FB Sync Input Voltage (V ) ............................ –0.3 to +5.3V SYNC Soft-Start Voltage (V ) .................................. –0.3 to +5.3V SS UVLO Voltage (V ) ................................... –0.3 to +5.3V UVLO Storage Temperature (T ) ........................ – ...
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... MIC9130 Parameter Condition Preregulator Input Leakage Current V LINE V Gate Lockout ( GLO(ON) LINE V Gate Lockout Hysteresis V CC LINE (ΔV ) GLO V Pre-Regulator Off ( PR(OFF) LINE V Pre-Regulator Hysteresis V CC LINE (Δ Start-up Current V LINE Supply Supply Current, I Pin 16 (OUT) = OPEN VCC Enable Input Current ...
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... MIC9130 Typical Characteristics Oscillator Frequency vs. V Voltage CC 2.0 F =200kHz OSC (NOM) 1 =9.47K 1 =470pF 0.5 0 -0.5 -1.0 -1.5 -2 (V) CC Error Amp Reference Voltage vs. Temperature 2.510 V = 10V 560K 2.505 B IAS 2.500 2.495 2.490 2.485 2.480 -40 - 100120140 TEMPERATURE (° ...
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... MIC9130 V vs. V BIAS CC 5.010 R = 560K 5.008 B IAS 5.006 5.004 5.002 5.000 4.998 4.996 4.994 4.992 4.990 VCC (V) V Turn On/Off Thresholds CC vs. Temperature 7.8 V =10V C C Vcc 7.6 R =560K B IAS 7.4 7.2 7 Vcc G LO Off 6.8 6.6 6.4 -40 - 100120140 TEMPERATURE (° ...
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... MIC9130 ISNS Pin Source Current vs =560K B IAS 41.5 41 40.5 40 39 (V) CC April 2005 ISNS Pin Source Current vs. Temperature 45 R =560K 44 B IAS V =10V -40 - 100120140 TEMPERATURE (°C) 7 Micrel, Inc. ...
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... MIC9130 Functional Block Diagram FB COMP OSC 7 6 Error 1.2V Amplifier 40µA ISNS 14 VBIAS 9 5V 0.82V EN BIAS 10 REG RBIAS 3 1.21V 5V 4µ CPWR 8 Q VCC 2 LINE 1 Thermal Shutdown M9999-040805 Oscillator Frequency vs. RC Values 1000000 47pF 100 p F 100000 220 p F 470 p F 680 p F ...
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... The high voltage startup pin eliminates the requirement for an external start up circuit. This makes it ideal for use with Telecom converters. A block diagram of the MIC9130 is shown in Figure 1. The de- scription of the controller is divided into 6 basic functions: • Power and bias circuitry • ...
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... the total current drawn by the IC VCC I is the sum of the operating current of the MIC9130 at VCC a given frequency and the average current required to drive the external switching MOSFET. A plot of typical operating current vs. frequency is given in Figure 3. The average MOS- FET gate drive current is calculated in the “MOSFET GATE DRIVE” ...
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... Enable A low level on the enable pin turns off all the functions of the rises above the MIC9130 and places low quiescent current state. The CC output driver low state. When the enable pin is pulled high, the MIC9130 goes through its normal start up sequence voltage including undervoltage lock out and soft start ...
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... The soft start pin and the current sense voltage are connected to a comparator in tç PMIC9130. The voltage from the soft start pin effectively limits the peak current through the current sense resistor by prematurely terminating the on-time of the gate drive output. ...
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... CPWR C1 Figure 7 MOSFET Gate Drive Output The MIC9130 has the capability to directly drive the gate of a MOSFET. The output driver consists of a complimentary P-channel and N-channel pair. The typical switching time of the output is dependent on the IC supply voltage and the gate charge required to turn the MOSFET on and off. ...
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... Micrel application note AN-24, “Designing with Low Side MOSFET Drivers.” M9999-040805 Current Sense Circuit The current sense input of the MIC9130 has three unique features, which are advantageous in a high speed, high ef- ficiency power supply The overcurrent threshold is nominally 0.82V instead R2 of the typical 1 ...
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... The maximum peak to peak volt- age at the sense pin (pin 14) is 0.82V at the 5A maximum output current. The current sense resistor value and power dissipation is: 630 kHz SNS (pin 14 MIC9130 OUT (pin 16) Figure × × R ISNS ...
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... Without slope compensation, the duty cycle of the power sup- ply will alternate wide and narrow pulses commonly referred to as subharmonic oscillations. Even though the MIC9130 operates below a 50% duty cycle, slope compensation adds the benefits of improved transient response and greater noise immunity in the current sense loop (especially when the current ramp is shallow) ...
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... MIC9130 Error Amplifier The error amplifier is part of the voltage control loop of the power supply. The FB pin is the inverting input to the error amplifier. The non-inverting input is internally connected to a 2.5V reference. The output of the error amplifier, COMP, is connected to the PWM comparator. The error amplifier ...
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... MIC9130 Package Information 0.025 BSC (0.635) 0.068 (1.73) 0.053 (1.35) 7¡ BSC M9999-040805 16-Lead SOIC (M) 0.344 (8.74) 0.0575 REF 0.337 (8.56) 8¡ 0¡ 0.157 (3.99) 0.150 (3.81) 0.012 (0.305) 0.008 (0.203) Note: 1. All Dimensions are in Inches (mm) excluding mold flash. 2. Lead coplanarity should be 0.004" max. 0.010 (0.254) 3. Max misalignment between top and bottom. ...
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... MIC9130 MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. ...