ISL8273M Datasheet, PDF (12/55 Pages) Intersil Corporation – 80A Single Channel Digital PMBus Step-Down Power Module

ISL8273M
Electrical Specifications V_IN = V_DD= 12V, f_SW = 533kHz, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at
T_A = +25°C. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
MAX
(Note 12) TYP (Note 12) UNIT
OSCILLATOR AND SWITCHING CHARACTERISTICS
f_{SW_RANGE}
f_{SW_ACCY}
Switching Frequency Range
Switching Frequency Set-point
Accuracy
296
1067
kHz
-5
+5
%
EXT_SYNC_PW
Minimum Pulse Width Required from
External SYNC Clock
Measured at 50% Amplitude
150
ns
EXT_SYNC_DRIFT Drift Tolerance for External SYNC Clock External SYNC Clock equal to 500kHz
-10
is not supported
+10
%
LOGIC INPUT/OUTPUT CHARACTERISTICS
I_{LOGIC_BIAS}
Bias Current at the Logic Input Pins
V_{LOGIC_IN_LOW} Logic Input Low Threshold Voltage
V_{LOGIC_IN_HIGH} Logic Input High Threshold Voltage
V_{LOGIC_OUT_LOW} Logic Output Low Threshold Voltage
V_{LOGIC_OUT_HIGH} Logic Output High Threshold Voltage
PMBus INTERFACE TIMING CHARACTERISTIC
DDC, EN, MGN, PG, SA, SCL, SDA,
SALRT, SYNC, UVLO, V_MON, V_SET
2mA sinking
2mA sourcing
-100
2.0
2.25
+100
nA
0.8
V
V
0.5
V
V
f_SMB
PMBus Operating Frequency
100
400
kHz
NOTES:
12. Compliance to datasheet limits is assured by one or more methods: Production test, characterization and/or design. Controller is independently
tested before module assembly.
13. V_OUT measured at the termination of the VSENP and VSENN sense points.
14. The MAX load current is determined by the thermal “Derating Curves” on page 15,
15. “FS” stands for full scale of recommended maximum operation range.
16. “t_SW” stands for time period of operation switching frequency.
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FN8704.2
March 16, 2016