Overview
Description
The ZL9101M is a 12A, variable output, step-down PMBus-compliant digital power supply. Included in the module is a high-performance digital PWM controller, power MOSFETs, an inductor, and all the passive components required for a highly integrated DC/DC power solution. This power module has built-in auto-compensation algorithms, which eliminate the need for manual compensation design work. The ZL9101M operates over a wide input voltage range and supports an output voltage range of 0. 6V to 3. 6V, which can be set by external resistors or through PMBus. This high-efficiency power module is capable of delivering 12A. Only bulk input and output capacitors are needed to finish the design. The output voltage can be precisely regulated to as low as 0. 6V with ±1% output voltage regulation over line, load, and temperature variations. The ZL9101M features auto compensation, internal soft-start, auto-recovery overcurrent protection, an enable option, and prebiased output start-up capabilities. The ZL9101M is packaged in a thermally enhanced, compact (15mmx15mm) and low profile (3. 5mm) overmolded QFN package module suitable for automated assembly by standard surface mount equipment. The ZL9101M is RoHS compliant. For PMBus operation, it is recommended to tie the Enable pin (EN) to SGND.
Features
- Complete digital switch mode power supply
- Fast transient response
- Auto compensating PID filter
- External synchronization
- Output voltage tracking
- Current sharing
- Programmable soft-start delay and ramp
- Overcurrent/undercurrent protection
- PMBus compliant
Comparison
Applications
Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Support
Support Communities
Support Communities
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ZL9101M
Good day! The chip of your production ZL9101M number on the Z1726AAAH chip got into my hands. The problem is as follows. Chip does not start on voltage conversion. Studies using PMBus have shown that it does not respond to the conversion frequency and output voltage set by the strapping ...
Apr 16, 2019 -
Need help regarding reading the Vout, Power, Temperature. I have attached a code written in python to do the readings. NOTE: Setup I'm Currently working with has FTDI FT232H as USB to I2C BRIDGE.Give me some corrections or trouble shooting methods
import time from pyftdi.i2c import I2cController # ZL9101M PMBus Address PMBUS_ADDRESS = 0x1B # PMBus Commands READ_VOUT = 0x8B # Read output voltage (Linear16) READ_IOUT = 0x88 # Read output current (Linear11) READ_POWER = 0x8C # Read output power (Linear11) def twos_complement(value, bits): """Convert unsigned to signed ...
Feb 20, 2025