34716 データシートの表示（PDF） - Freescale Semiconductor

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34716

1.0 MHz Dual Switch-Mode DDR Power Supply

Freescale Semiconductor 

INTERNAL BLOCK DIAGRAM

INTERNAL BLOCK DIAGRAM

PG

FREQ

ILIM1

BOOT1

PVIN1

SW1

M5

PGND1

COMP1

INV1

VOUT1

STBY SD

System

M1

Reset

Oscillator

Buck

Control

Logic

ISENSE2

ISENSE1

ILIM2

Current

Monitoring

ILIM1

System

Control

Thermal

Monitoring

Discharge

VBG

Bandgap

Regulator

Internal

Voltage

Regulator

M2

VIN

M4

Gate

ISENSE Driver

FSW

Error

Amplifier

PWM

Comparator

Ramp

Generator

VBG

M8

Discharge

CHANNEL 1

M10

Discharge

M3

VIN

M6

FSW

Gate

Driver

ISENSE

PWM

Comparator

Ramp

Generator

M7

Error

Amplifier

M9

Discharge

CHANNEL 2

GND

VREFOUT

Figure 2. 34716 Simplified Internal Block Diagram

VDDI

VIN

BOOT2

PVIN2

SW2

PGND2

COMP2

INV2

VOUT2

VREFIN

34716

2

Analog Integrated Circuit Device Data

Freescale Semiconductor

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