AC3E-IHP_ALDO - Design example for IHP - Open Source PDK.

© Daniel Arevalos, Advanced Center for Electrical and Electronic Engineering (AC3E), Innovations for High Performance Microelectronics (IHP).

This is a design made as an example for the IHP-Open-PDK technology.

Directory Structure

├─ 📁 klayout
├─ 📁 xschem
├─ 📁 python
├─ 📁 results
└─ 📄Makefile.mk

Overview

The design consist in:

1. LDO_Closed-loop: low dropout regulator with feedback loop
2. LDO_Open-loop: low dropout regulator with the feedback loop opened.
3. Pass transistor: The pass transistor used in the LDO.
4. OTA Open-Loop: Two stage Transconductance amplifier used in the LDO design.
5. TGATE1: transmission gate for testing.
6. TGATE2: transmission gate for testing.

Pin Number	Pin Name	Type	Description
1	Vout_ldo_cl	Analog	LDO CL design output
2	Vin_ldo_cl	Power Supply	LDO CL design Input voltage
3	Vref_ldo_cl	Analog	LDO CL design Voltage reference
4	ibias_ldo_cl	Analog	LDO CL design ibias current
5	TGATE1_IN	Analog	Tgate1 input
6	TGATE2_IN	Analog	Tgate2 input
7	TGATE1_EN	Digital	Tgate1 enable
8	Vss	Power Supply	Global Ground
9	TGATE1_OUT	Analog	Tgate1 output
10	TGATE2_OUT	Analog	Tgate2 output
11	TGATE2_EN	Digital	Tgate2 enable
12	TGATE_VDD	Power Supply	Tgate1 and Tgate2 power supply
13	NOT USED
14	vdd_ota	Power Supply	OTA power supply
15	ibias_ota	Analog	OTA bias current
16	in_pos_ota	Analog	OTA positive input
17	out_ota	Analog	OTA output
18	in_neg_ota	Analog	OTA negative input
19	Vgate_pt	Analog	Pass Transistor Gate
20	Vdrain_pt	Analog	Pass Transistor Drain
21	Vss	Power Supply	Global Ground
22	Vsource_ota		Pass Transistor source
23	vdiv_ldo_ol	Analog	LDO OL volage divider output
24	pos_ldo_ol	Analog	LDO OL positive input
25	Vout_ldo_ol	Analog	LDO OL output voltage
26	ibias_ldo_ol	Analog	LDO OL bias current
27	vref_ldo_ol	Analog	LDO OL voltage reference
28	Vin_ldo_ol	Power Supply	LDO OL power supply