mpq8785.rst

  1.. SPDX-License-Identifier: GPL-2.0-only
  2
  3Kernel driver mpq8785
  4=======================
  5
  6Supported chips:
  7
  8  * MPS MPM3695 family
  9  * MPS MPM82504
 10  * MPS MPQ8785
 11
 12    Prefix: 'mpq8785'
 13
 14Author: Charles Hsu <ythsu0511@gmail.com>
 15
 16Description
 17-----------
 18
 19The MPM3695 family is a scalable, ultra-thin, fully integrated power module with
 20a PMBus interface. It offers a complete power solution that achieves up to
 2110A (-10 variant), 20A (-25 variant), 25A (-20 variant), 100A (-100 variant)
 22of output current with excellent load and line regulation across a wide input
 23voltage range. It operates at high efficiency over a wide load range, and can
 24be parallled to deliver higher current. Variants -10,-20 and -100 have different
 25voltage scale configuration register range (10 bits) than -25 version (11 bits).
 26
 27The MPM82504 is a quad 25A, scalable, fully integrated power module with a PMBus
 28interface. The device offers a complete power solution that achieves up to 25A
 29per output channel. The MPM82504 has four output channels that can be paralleled
 30to provide 50A, 75A, or 100A of output current for flexible configurations.
 31The device can also operate in parallel with the MPM3695-100 and additional
 32MPM82504 devices to provide a higher output current. The MPM82504 operates
 33at high efficiency across a wide load range.
 34
 35The MPQ8785 is a fully integrated, PMBus-compatible, high-frequency, synchronous
 36buck converter. The MPQ8785 offers a very compact solution that achieves up to
 3740A output current per phase, with excellent load and line regulation over a
 38wide input supply range. The MPQ8785 operates at high efficiency over a wide
 39output current load range.
 40
 41The PMBus interface provides converter configurations and key parameters
 42monitoring.
 43
 44The devices adopts MPS's proprietary multi-phase digital constant-on-time (MCOT)
 45control, which provides fast transient response and eases loop stabilization.
 46The MCOT scheme also allows multiple devices or channels to be connected in
 47parallel with excellent current sharing and phase interleaving for high-current
 48applications.
 49
 50Fully integrated protection features include over-current protection (OCP),
 51over-voltage protection (OVP), under-voltage protection (UVP), and
 52over-temperature protection (OTP).
 53
 54Device compliant with:
 55
 56- PMBus rev 1.3 interface.
 57
 58The driver exports the following attributes via the 'sysfs' files
 59for input voltage:
 60
 61**in1_input**
 62
 63**in1_label**
 64
 65**in1_max**
 66
 67**in1_max_alarm**
 68
 69**in1_min**
 70
 71**in1_min_alarm**
 72
 73**in1_crit**
 74
 75**in1_crit_alarm**
 76
 77The driver provides the following attributes for output voltage:
 78
 79**in2_input**
 80
 81**in2_label**
 82
 83**in2_alarm**
 84
 85The driver provides the following attributes for output current:
 86
 87**curr1_input**
 88
 89**curr1_label**
 90
 91**curr1_max**
 92
 93**curr1_max_alarm**
 94
 95**curr1_crit**
 96
 97**curr1_crit_alarm**
 98
 99The driver provides the following attributes for temperature:
100
101**temp1_input**
102
103**temp1_max**
104
105**temp1_max_alarm**
106
107**temp1_crit**
108
109**temp1_crit_alarm**