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MSK MSK5059RH User Manual Download Page 9

 

 

Page 9 of 9 

Bill Of Materials 

 

Ref

 

Des

Description

Manufacturer

Part

 

Number

U1

Switching

 

Regulator

MS

 

Kennedy

 

Corp. MSK5059RHG

C1A

1210

 

Ceramic

 

cap

 

1.0uF

AVX

12103C105KAT

C1B

1210

 

Ceramic

 

cap

 

1.0uF

AVX

12103C105KAT

C2

8050

 

Ceramic

 

Cap

 

.33uF

AVX

08053C334KAT

C3

8050

 

Ceramic

 

Cap

 

1000pF

AVX

08053A102JAT

C4

8050

 

Ceramic

 

Cap

 

1500pF

AVX

08053A152FAT

C5A

220

 

uF

 

Low

 

ESR

 

tantalum

AVX

TAZH227K010L

 

(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

8050

 

Ceramic

 

cap

 

0.1uF

AVX

08053C104KAT

C7A

47

 

uF

 

Low

 

ESR

 

tantalum

AVX

TAZH476K020L

 

(CWR29JC476K)

C7B

47

 

uF

 

Low

 

ESR

 

tantalum

AVX

TAZH476K020L

 

(CWR29JC476K)

C8

N/A

C9

N/A

R1

Resistor

 

1.21K,

 

1/8W

R2

Resistor

 

2.49K,

 

1/8W

R3

Resistor

 

10.0K,

 

1/8W

R4

Resistor

 

20

Ω

,

 

1/8W

R5

N/A

CR1

Fairchild

Fairchild

FYD0504SATM

CR2

1N4148

 

or

 

1N914

ANY

1N4148

 

or

 

1N914

CR3

N/A

L1

6.8uH

 

inductor

Coilcraft

DO3316P

‐

682MLB

 
 

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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