ISL8204M 查看數據表（PDF） - Renesas Electronics

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产品描述 (功能)

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ISL8204M

Complete High Efficiency DC/DC Power Module

Renesas Electronics 

ISL8204M, ISL8206M

Typical Performance Characteristics (Continued)

Output Ripple Performance TA = +25°C, VOUT = 1.5V, CIN = 220µFx1, 10µF/Ceramic x 2, COUT = 47µF/Ceramic x 8.

Oscilloscope BW = 20MHz

VOUT 6A

VOUT 4A

VOUT 0A

VOUT 6A

VOUT 4A

VOUT 0A

FIGURE 13. OUTPUT VOLTAGE RIPPLE AT VIN = 5V

Reference Circuitry For General

Applications

1. Single Power Supply

Figure 15 shows the ISL8204M, ISL8206M application

schematic for input voltage +5V or +12V. The PVCC pin can

connect to the input supply directly.

CPVCC

RFB RSET-EX

PVCC

COMP/EN

VIN

ISL8204M, ISL8206M

FB

PHASE

ISET

VOUT

PGND

(+5V/+12V)

VIN

CIN

VOUT

COUT

FIGURE 14. OUTPUT VOLTAGE RIPPLE AT VIN = 12V

2. Separated Power Supply

Figure 16 shows the ISL8204M, ISL8206M application

schematic for wide input voltages from +1V to +20V. The

PVCC supply can source +5V/+12V or +6.5V to 14.4V.

(+5V/+12V)

or

PVCC

(+6.5V to 14.4V) CPVCC

RFB RSET-EX

PVCC

C O M P /E N

VIN

ISL8204M, ISL8206M

FB

PHASE

ISET

VOUT

PGND

(+1V to +20V)

V IN

C IN

VOUT

COUT

FIGURE 16. WIDE INPUT VOLTAGE APPLICATION SCHEMATIC

FIGURE 15. TYPICAL APPLICATION SCHEMATIC

Applications Information

The typical ISL8204M, ISL8206M application schematic for input

voltage +5V or +12V is shown in Figure 15. External component

selection is primarily determined by the maximum load current

and input/output voltage.

Programming the Output Voltage

The ISL8204M, ISL8206M has an internal 0.6V ±1.5% reference

voltage. Programming the output voltage requires a dividing

resistor (RFB). The output voltage can be calculated as shown in

Equation 1:

VOUT

=

0.6







1

+

-9-R--.--7-F--6-B---k-

(EQ. 1)

FN6999 Rev 4.00

October 28, 2014

Page 9 of 19

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