ISL62883C Datasheet, PDF (8/43 Pages) Intersil Corporation – Multiphase PWM Regulator for IMVP-6.5™ Mobile CPUs and GPUs

ISL62883C
Electrical Specifications
Operating Conditions: VDD = 5V, T_A = -40°C to +100°C, f_SW = 300kHz,
unless otherwise noted. Boldface limits apply over the operating temperature range,
-40°C to +100°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 6) TYP (Note 6) UNITS
CHANNEL FREQUENCY
Nominal Channel Frequency
Adjustment Range
f_SW(nom)
R_fset = 7kΩ, 3-channel operation,
V_COMP = 1V
285
300
315
kHz
200
500
kHz
AMPLIFIERS
Current-Sense Amplifier Input
Offset
I_FB = 0A
-0.15
+0.15
mV
Error Amp DC Gain (Note 7)
Error Amp Gain-Bandwidth
Product (Note 7)
A_v0
GBW
C_L = 20pF
90
dB
18
MHz
ISEN
Imbalance Voltage
Maximum of ISENs - Minimum of
ISENs
1
mV
Input Bias Current
20
nA
POWER-GOOD AND PROTECTION MONITORS
PGOOD Low Voltage
PGOOD Leakage Current
PGOOD Delay
V_OL
I_PGOOD = 4mA
0.26
0.4
V
I_OH
PGOOD = 3.3V
-1
1
µA
tpgd
CLK_ENABLE# LOW to PGOOD HIGH
6.3
7.6
8.9
ms
GATE DRIVER
UGATE Pull-Up Resistance
(Note 7)
R_UGPU
200mA Source Current
1.0
1.5
Ω
UGATE Source Current (Note 7)
UGATE Sink Resistance (Note 7)
UGATE Sink Current (Note 7)
LGATE Pull-Up Resistance
(Note 7)
I_UGSRC
R_UGPD
I_UGSNK
R_LGPU
UGATE - PHASE = 2.5V
250mA Sink Current
UGATE - PHASE = 2.5V
250mA Source Current
2.0
A
1.0
1.5
Ω
2.0
A
1.0
1.5
Ω
LGATE Source Current (Note 7)
LGATE Sink Resistance (Note 7)
LGATE Sink Current (Note 7)
UGATE to LGATE Deadtime
LGATE to UGATE Deadtime
BOOTSTRAP DIODE
I_LGSRC
R_LGPD
I_LGSNK
t_UGFLGR
t_LGFUGR
LGATE - VSSP = 2.5V
250mA Sink Current
LGATE - VSSP = 2.5V
UGATE falling to LGATE rising, no load
LGATE falling to UGATE rising, no load
2.0
A
0.5
0.9
Ω
4.0
A
23
ns
28
ns
Forward Voltage
Reverse Leakage
PROTECTION
V_F
PVCC = 5V, I_F = 2mA
I_R
V_R = 25V
0.58
V
0.2
µA
Overvoltage Threshold
Severe Overvoltage Threshold
OC Threshold Offset at
Rcomp = Open Circuit
OV_H
OV_HS
VSEN rising above setpoint for >1ms
150
195
240
mV
VSEN rising for >2µs
1.525 1.55 1.575
V
3-phase configuration, ISUM- pin
current
28.4
30.3
32.2
µA
2-phase configuration, ISUM- pin
current
18.3
20.2
22.1
µA
1-phase configuration, ISUM- pin
current
8.2
10.1 12.0
µA
Current Imbalance Threshold
One ISEN above another ISEN for
>1.2ms
9
mV
Undervoltage Threshold
UV_f
VSEN falling below setpoint for
>1.2ms
-355 -295 -235
mV
8
FN7557.1
March 18, 2010