RC5051 Ver la hoja de datos (PDF) - Fairchild Semiconductor

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RC5051

Programmable Synchronous DC-DC Controller for Low Voltage Microprocessors

Fairchild Semiconductor 

PRODUCT SPECIFICATION

RC5051

Table 3. Recommended Values for CPU-based Applications

Application

300MHz AMD K6

Motherboard

300 MHz Intel Pentium

Motherboard

400MHz Intel Pentium II

Motherboard

Output

Current

13A

14.2A

12.6A

CIN

3 x 1200µF, 10V

Sanyo

10MV1200GX

3 x 1200µF, 10V

Sanyo

10MV1200GX

3 x 1200µF, 10V

Sanyo

10MV1200GX

COUT*

2 x 1500µF, 6.3V Sanyo

6MV1500GX

7 x 1500µF, 6.3V Sanyo

6MV1500GX

7 x 1500µF, 6.3V Sanyo

6MV1500GX

COUT

Maximum

ESR*

6.1mΩ

6.8mΩ

6.3mΩ

RSENSE

5.8mΩ

5.2mΩ

5.8mΩ

* Output capacitance and ESR requirements depend critically on layout and processor type. Consult Application Bulletin AB-14

for details

Test Circuit

+12V

47Ω

+5V

0.1µF

VCCA

1µF

VCCQP

4.7Ω

HIDRV

3000pF

VCCP

1µF

4.7Ω

LODRV

3000pF

tR

90%

50%

10%

tDT1

50%

tF

90%

50%

10%

tDT2

HIDRV

50%

LODRV

GNDA GNDD GNDP

65-5051-05

Figure 2. Output Drive Test Circuit and Timing Diagram

REV. 1.0.4 4/2/01

9

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