ZZEA =

1

CCOMP x RCOMP

ZO =

1

(CHF + CCOMP) x RFB2

ZHF =

CHF x CCOMP x RCOMP

(CHF + CCOMP)

LM5116-HT

SLVSBS8B – OCTOBER 2013 – REVISED JANUARY 2014

www.ti.com

(49)

Where AOL = 10,000 (80 dB) and ωBW = 2π x fBW. GEA(S) is the ideal error amplifier gain, which is modified at DC

and high frequency by the open loop gain of the amplifier and the feedback divider ratio.

Figure 17. 5-V 7-A Typical Application Schematic

Table 1. Bill of Materials for 7-V - 60-V Input, 5-V 7-A Output, 250 kHz

ID

Part Number

Type

Size

Parameters

Qty

Vendor

C1, C2, C14

C2012X7R1E105K

Capacitor, Ceramic

0805

1µF, 25V, X7R

3

TDK

C3

VJ0603Y103KXAAT

Capacitor, Ceramic

0603

0.01µF, 50V, X7R

1

Vishay

C4

VJ0603A271JXAAT

Capacitor, Ceramic

0603

270pF, 50V, COG, 5%

1

Vishay

C5, C15

VJ0603Y101KXAT

Capacitor, Ceramic

0603

100pF, 50V, X7R

2

Vishay

W1BC

C6

VJ0603Y332KXXAT

Capacitor, Ceramic

0603

3300pF, 25V, X7R

1

Vishay

C7

Capacitor, Ceramic

0603

Not Used

0

C8, C9, C10,

C4532X7R2A225M

Capacitor, Ceramic

1812

2.2µF, 100V X7R

4

TDK

C11

C12

C3225X7R2A105M

Capacitor, Ceramic

1210

1µF, 100V X7R

1

TDK

C13

C2012X7R2A104M

Capacitor, Ceramic

0805

0.1µF, 100V X7R

1

TDK

C16, C17, C18,

C4532X6S0J107M

Capacitor, Ceramic

1812

100µF, 6.3V, X6S, 105°C

5

TDK

C19, C20

C21, C22

Capacitor, Tantalum

D Case

Not Used

0

C23

Capacitor, Ceramic

0805

Not Used

0

28

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