Digital Supply Buck

Overview

CT21302 is high efficiency DCDC buck converter designed work with supply voltage between 1.62V and 1.98V.

The converter is optimized for current load up to 100mA and 0.95V to 1.3V selectable output voltage (50mV of step).

Regulation is performed fixed frequency voltage mode PWM technique.

The cell features integrated high side and low side switches and type III compensated error amplifier: only one inductor and capacitor are needed to close the loop.

Burst mode is available to reduce the quiescent current at light load.

Key Features

Input Voltage Range: 1.62V to 1.98V
120mA of Load Current
0.95V to 1.3V Selectable Output (50mV of Step)
Voltage regulation performed according fixed 600KHz frequency voltage mode PWM technique or burst mode at light load
150uA of quiescent current @ 100uA of load in burst mode
5mV ripple with 10uF X5R ceramic capacitor
92% of efficiency @ 100mA

Benefits

Easy portability

Block Diagram

Applications

Supply of high power digital blocks

Deliverables

Datasheet
Integration guidelines
Test Specifications
GDS2 and LVS Netlist
Footprint (.LEF)

Technical Specifications

Foundry, Node

TSMC 0.18u HVCMOS

Maturity

Silicon Proven on TSMC 0.18u HVCMOS

Availability

Available

TSMC

Pre-Silicon: 180nm G

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