DLPC900 datasheet(48/72 Pages) TI1

48 / 72 page

DLPC900

Regulator

Vout

1.15V

GND

Regulator

Vout

1.8V

Regulator

Vout

3.3V

PWRGOOD

POSENSE

Voltage

Monitors

Filter

PWRGOOD

POSENSE

1.15V Core & eDRAM I/O

1.15V PLLs

1.8V PLLs

1.8V DMD I/O & eDRAM

3.3V

Regulator

Vout

1.8V

DLPC900

DLPS037A – OCTOBER 2014 – REVISED AUGUST 2015

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9 Power Supply Recommendations

9.1 System Power Regulation

The PLLD_VAD, PLLM1_VAD, and PLLM2_VAD power feeding internal PLLs must be derived from an isolated

linear regulator with filter as recommended in PCB Layout Guidelines for Internal Controller PLL Power to

minimize the AC noise component.

It is acceptable to derive PLLD_VDD, PLLM1_VDD, PLLM2_VDD, and PLLS_VAD from the same regulator as

the core VDDC, but they should be filtered as recommended in the PCB Layout Guidelines for Internal Controller

PLL Power .

Figure 24. Power Regulation

9.1.1 Power Distribution System

9.1.1.1 1.15-V System Power

The DLPC900 can support a low-cost power delivery system with a single 1.15-V power source derived from a

switching regulator. The main core should receive 1.15 V power directly from the regulator output, and the

internal DLPC900 PLLs (PLLD_VDD, PLLM1_VDD, PLLM2_VDD, and PLLS_VAD) should receive individually

filtered versions of this 1.15 V power. For specific filter recommendations, refer to the PCB Layout Guidelines for

Internal Controller PLL Power .

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DLPC900 Datasheet(PDF) 48 Page - Texas Instruments

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