MSK MSK5059RH User Manual Download Page 8

 

 

Page 8 of 9 

MSK5059 Evaluation Board Schematic 

 

 

 

 
Typical Performance 

 

Parameter Conditions 

Units 

Typical 

Output Voltage 

V

in

 = 5.0V, I

OUT

 = 2.0A 

1.8V (Factory Default) 

Switching Frequency 

V

in

 = 5.0V, I

OUT

 = 2.0A 

kHz 

500 

Output Ripple Voltage 

V

in

 = 5.0V, I

OUT

 = 2.0A 

mVp-p

25 

Line Regulation 

4.3V 

 V

in 

 15V, I

OUT

 = 2.0A 

-0.1 

Load Regulation 

V

in

 = 5.0V, I

OUT

 = 50mA to 2.0A

-0.3 

Efficiency V

in

 = 5.0V, I

OUT

 = 2.0A 

75 

Current Limit 

V

in

 = 5.0V 

5.5 

Gain Margin 

V

in

 = 5.0V, I

OUT

 = 2.0A 

dB 

34 

Phase Margin 

V

in

 = 5.0V, I

OUT

 = 2.0A 

Deg 

65 

 

PCB Artwork 

 

    

            

 

 

Top Side 

Bottom Side 

Summary of Contents for MSK5059RH

Page 1: ...new designs with ample real estate to make changes and evaluate results Evaluation early in the design phase reduces the likelihood of excess ripple instability or other issues from becoming a proble...

Page 2: ...12V When configured for an output voltage of 2 5V or greater the MSK5059RH will function normally with input voltages up to the maximum rating of 15V If operating the MSK5059RH at less than the minimu...

Page 3: ...alues for loop compensation components depend on parameters which are not always well controlled These include inductor value 30 due to production tolerance load current and ripple current variations...

Page 4: ...ansients more visible A well behaved loop will settle back quickly and smoothly Figure 3 C and is termed critically damped whereas a loop with poor phase or gain margin will either ring as it settles...

Page 5: ...logic low to greater than 2 2V with a duty cycle between 10 and 90 The synchronization frequency must be greater than the free running oscillator frequency and less than 1 MHz This means that minimum...

Page 6: ...itance is altered The output contains very narrow voltage spikes because of the parasitic inductance of C5 Ceramic capacitors C6A and B remove these spikes on the demo board In application trace induc...

Page 7: ...DC 2 for 50 DC 90 DC Duty cycle VOUT VIN Maximum output current is then reduced by one half peak to peak inductor current IMAX IP VOUT VIN VOUT 2 L f VIN Example with VOUT 5V VIN 8V DC 5 8 0 625 L 3...

Page 8: ...Switching Frequency Vin 5 0V IOUT 2 0A kHz 500 Output Ripple Voltage Vin 5 0V IOUT 2 0A mVp p 25 Line Regulation 4 3V Vin 15V IOUT 2 0A 0 1 Load Regulation Vin 5 0V IOUT 50mA to 2 0A 0 3 Efficiency V...

Page 9: ...CWR29FC227K C5B 220 uF Low ESR tantalum AVX TAZH227K010L CWR29FC227K C5C 220 uF Low ESR tantalum AVX TAZH227K010L CWR29FC227K C5D N A C5E N A C5F N A C6A 1210 Ceramic cap 1 0uF AVX 12103C105KAT C6B 8...

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